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Android Source code of Final Year Project Management System

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SupervisorsProfiles.kt

package com.fyp.evaluation.Student

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.os.RecoverySystem
import android.view.View
import android.widget.EditText
import android.widget.RelativeLayout
import android.widget.Toast
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView
import com.fyp.evaluation.Adapter.Adapter_SupervisorProfile
import com.fyp.evaluation.Model.Model_SupervisorProfile
import com.fyp.evaluation.R
import com.fyp.evaluation.RetrieveData
import com.google.firebase.auth.FirebaseAuth
import com.google.firebase.auth.FirebaseUser
import com.google.firebase.database.DataSnapshot
import com.google.firebase.database.DatabaseError
import com.google.firebase.database.FirebaseDatabase
import com.google.firebase.database.ValueEventListener

class SupervisorsProfiles : AppCompatActivity() {

    private var btnBack:RelativeLayout? = null
    private var btnSearch:RelativeLayout? = null
    private var editTextSearch:EditText? = null
    private var recyclerView:RecyclerView? = null
    private var adapter:Adapter_SupervisorProfile? = null
    private lateinit var arrayList: ArrayList<Model_SupervisorProfile>
    private var firebaseUser:FirebaseUser? = null
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_supervisors_profiles)
        btnBack = findViewById(R.id.btnBack_sp)
        btnSearch = findViewById(R.id.btn_search)
        editTextSearch = findViewById(R.id.et_search_sp)
        recyclerView = findViewById(R.id.recyclerView_sp)
        if (supportActionBar!=null)
        {
            supportActionBar!!.hide()
        }
        firebaseUser = FirebaseAuth.getInstance().currentUser
        arrayList = ArrayList()
        recyclerView?.setHasFixedSize(true)
        recyclerView?.layoutManager = LinearLayoutManager(this)

        btnBack?.setOnClickListener(object: View.OnClickListener
        {
            override fun onClick(v: View?) {
                finish()
            }
        })

        btnSearch?.setOnClickListener(object: View.OnClickListener
        {
            override fun onClick(v: View?) {
                   var id = editTextSearch?.text?.trim().toString()
                if (id.isEmpty())
                {
                    editTextSearch?.setBackgroundDrawable(resources.getDrawable(R.drawable.edit_text_shape_focused))
                }
                else
                {
                    editTextSearch?.setText("")
                    loadSupervisorProfiles(id)
                }
            }
        })
    }

    fun loadSupervisorProfiles(sID:String?)
    {

        var ref = FirebaseDatabase.getInstance().reference.child("Users")
        ref.addValueEventListener(object: ValueEventListener
        {
            override fun onDataChange(snapshot: DataSnapshot) {
                if (snapshot.exists())
                {
                    (arrayList as ArrayList<Model_SupervisorProfile>).clear()
                    for (dataSnapShot in snapshot.children)
                    {
                        var uid = dataSnapShot.child("uid").getValue(String::class.java)
                        var id_supervisor = dataSnapShot.child("supervisor_id").getValue(String::class.java)
                        var category  = dataSnapShot.child("category").getValue(String::class.java)
                        var profileImage = dataSnapShot.child("profile_image").getValue(String::class.java)
                        var name = dataSnapShot.child("name").getValue(String::class.java)
                        var email = dataSnapShot.child("email").getValue(String::class.java)
                        if (category.equals("supervisor") && id_supervisor.equals(sID))
                        {
                            var model = Model_SupervisorProfile(uid,profileImage,name,email)
                            arrayList.add(model)
                        }
                    }
                    adapter = Adapter_SupervisorProfile(this@SupervisorsProfiles,arrayList)
                    recyclerView?.adapter = adapter
                }
            }

            override fun onCancelled(error: DatabaseError) {
                TODO("Not yet implemented")
            }

        })
    }

}

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package com.fyp.evaluation.Student

import androidx.appcompat.app.AppCompatActivity

import android.os.Bundle

import android.os.RecoverySystem

import android.view.View

import android.widget.EditText

import android.widget.RelativeLayout

import android.widget.Toast

import androidx.recyclerview.widget.LinearLayoutManager

import androidx.recyclerview.widget.RecyclerView

import com.fyp.evaluation.Adapter.Adapter_SupervisorProfile

import com.fyp.evaluation.Model.Model_SupervisorProfile

import com.fyp.evaluation.R

import com.fyp.evaluation.RetrieveData

import com.google.firebase.auth.FirebaseAuth

import com.google.firebase.auth.FirebaseUser

import com.google.firebase.database.DataSnapshot

import com.google.firebase.database.DatabaseError

import com.google.firebase.database.FirebaseDatabase

import com.google.firebase.database.ValueEventListener

class SupervisorsProfiles : AppCompatActivity() {

private var btnBack:RelativeLayout? = null

private var btnSearch:RelativeLayout? = null

private var editTextSearch:EditText? = null

private var recyclerView:RecyclerView? = null

private var adapter:Adapter_SupervisorProfile? = null

private lateinit var arrayList: ArrayList<Model_SupervisorProfile>

private var firebaseUser:FirebaseUser? = null

override fun onCreate(savedInstanceState: Bundle?) {

super.onCreate(savedInstanceState)

setContentView(R.layout.activity_supervisors_profiles)

btnBack = findViewById(R.id.btnBack_sp)

btnSearch = findViewById(R.id.btn_search)

editTextSearch = findViewById(R.id.et_search_sp)

recyclerView = findViewById(R.id.recyclerView_sp)

if (supportActionBar!=null)

{

supportActionBar!!.hide()

}

firebaseUser = FirebaseAuth.getInstance().currentUser

arrayList = ArrayList()

recyclerView?.setHasFixedSize(true)

recyclerView?.layoutManager = LinearLayoutManager(this)

btnBack?.setOnClickListener(object: View.OnClickListener

{

override fun onClick(v: View?) {

finish()

}

})

btnSearch?.setOnClickListener(object: View.OnClickListener

{

override fun onClick(v: View?) {

var id = editTextSearch?.text?.trim().toString()

if (id.isEmpty())

{

editTextSearch?.setBackgroundDrawable(resources.getDrawable(R.drawable.edit_text_shape_focused))

}

else

{

editTextSearch?.setText("")

loadSupervisorProfiles(id)

}

})

}

fun loadSupervisorProfiles(sID:String?)

{

var ref = FirebaseDatabase.getInstance().reference.child("Users")

ref.addValueEventListener(object: ValueEventListener

{

override fun onDataChange(snapshot: DataSnapshot) {

if (snapshot.exists())

{

(arrayList as ArrayList<Model_SupervisorProfile>).clear()

for (dataSnapShot in snapshot.children)

{

var uid = dataSnapShot.child("uid").getValue(String::class.java)

var id_supervisor = dataSnapShot.child("supervisor_id").getValue(String::class.java)

var category = dataSnapShot.child("category").getValue(String::class.java)

var profileImage = dataSnapShot.child("profile_image").getValue(String::class.java)

var name = dataSnapShot.child("name").getValue(String::class.java)

var email = dataSnapShot.child("email").getValue(String::class.java)

if (category.equals("supervisor") && id_supervisor.equals(sID))

{

var model = Model_SupervisorProfile(uid,profileImage,name,email)

arrayList.add(model)

}

adapter = Adapter_SupervisorProfile(this@SupervisorsProfiles,arrayList)

recyclerView?.adapter = adapter

}

override fun onCancelled(error: DatabaseError) {

TODO("Not yet implemented")

}

})

}

SupervisorPreview.kt

package com.fyp.evaluation.Student

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.view.View
import android.view.WindowManager
import android.widget.*
import androidx.cardview.widget.CardView
import com.fyp.evaluation.R
import com.fyp.evaluation.SharedPreference
import com.google.firebase.auth.FirebaseAuth
import com.google.firebase.auth.FirebaseUser
import com.google.firebase.database.*
import com.makeramen.roundedimageview.RoundedImageView
import com.squareup.picasso.Picasso

class SupervisorPreview : AppCompatActivity() {

    private var backBtn:RelativeLayout? = null
    private var profileImage:RoundedImageView? = null
    private var btnRequest:CardView? = null
    private var nameTxtView:TextView? = null
    private var requestTxtView:TextView? = null
    private var statusActiveTxtView:TextView? = null
    private var statusNotActiveTxtView:TextView? = null
    private var spinner:Spinner? = null
    private var arrayList = mutableListOf<String>()

    private var firebaseUser:FirebaseUser? = null
    private var uidSupervisor:String = ""
    private lateinit var sharedPreference:SharedPreference

    private var nameCurrentUser:String? = null
    private var profileImageCurrentUser:String? = null
    private var semesterCurrentUser:String? = null
    private var pnameCurrentUser:String? = null
    private var gnameCurrentUser:String = ""

    private lateinit var refRequestCancelTemp:ValueEventListener
    private lateinit var refRequestCancel:DatabaseReference

    private lateinit var refIsAllowedTemp:ValueEventListener
    private lateinit var refIsAllowed:DatabaseReference

    private lateinit var refRetrieveTemp:ValueEventListener
    private lateinit var refRetrieve:DatabaseReference
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_supervisor_preview)
        backBtn = findViewById(R.id.btnBack_supervisor_preview)
        profileImage = findViewById(R.id.profileImage_supervisor_preview)
        btnRequest = findViewById(R.id.Btnrequest_supervisor_preview)
        nameTxtView = findViewById(R.id.txtViewname_supervisor_preview)
        requestTxtView = findViewById(R.id.txtView_request)
        statusActiveTxtView = findViewById(R.id.txtView_statusActive_supervisor_preview)
        statusNotActiveTxtView = findViewById(R.id.txtView_statusNotActive_supervisor_preview)
        spinner = findViewById(R.id.spinner_supervisor_preview)
        window.setFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS,WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS)
        if (supportActionBar!=null)
        {
            supportActionBar!!.hide()
        }
        spinner?.setPopupBackgroundResource(R.color.card_color1)
        sharedPreference = SharedPreference(this@SupervisorPreview)
        nameCurrentUser = sharedPreference.getName()
        profileImageCurrentUser = sharedPreference.getProfileImage()
        pnameCurrentUser = sharedPreference.getProjectName()
        gnameCurrentUser = sharedPreference.getGroupName().toString()
        semesterCurrentUser = sharedPreference.getSemester()
        firebaseUser = FirebaseAuth.getInstance().currentUser
        var intent = intent
        uidSupervisor = intent.getStringExtra("uid").toString()
        var profile_image = intent.getStringExtra("profileImage")
        var name = intent.getStringExtra("name")
        Picasso.get().load(profile_image).into(profileImage)
        nameTxtView?.setText(name.toString())
        retrieveSlots(uidSupervisor)
        retrieveProjects(uidSupervisor)
        isAlloted()
        backBtn?.setOnClickListener(object: View.OnClickListener
        {
            override fun onClick(v: View?) {
                finish()
            }
        })

        btnRequest?.setOnClickListener(object: View.OnClickListener
        {
            override fun onClick(v: View?) {
                var status = requestTxtView?.getText().toString()
                if (status.equals("Cancel"))
                {
                    cancelRequest()
                }
                else
                {
                    sendRequest()
                }
            }
        })
    }

    private fun sendRequest()
    {
        requestTxtView?.setText("Sending")
        var ref = FirebaseDatabase.getInstance().reference.child("Requests")
        var key = ref.push().key
        var hashMap = HashMap<String,String>()
        hashMap.put("id_supervisor",uidSupervisor)
        hashMap.put("id",firebaseUser!!.uid)
        hashMap.put("name",nameCurrentUser!!)
        hashMap.put("profile_image",profileImageCurrentUser!!)
        hashMap.put("project_name",pnameCurrentUser!!)
        hashMap.put("group_name",gnameCurrentUser!!)
        hashMap.put("semester",semesterCurrentUser!!)
        hashMap.put("status","pending")
        hashMap.put("key",key.toString())
        ref.child(key!!).setValue(hashMap).addOnCompleteListener { task->
            if(task.isSuccessful)
            {
                requestTxtView?.setText("Cancel")
            }
        }
    }

    private fun cancelRequest()
    {
        var ref = FirebaseDatabase.getInstance().reference.child("Requests")

        refRequestCancelTemp = ref.addValueEventListener(object: ValueEventListener
        {
            override fun onDataChange(snapshot: DataSnapshot) {
                if (snapshot.exists())
                {
                    for (dataSnapShot in snapshot.children)
                    {
                        var id = dataSnapShot.child("id").getValue(String::class.java)
                        var id_supervisor = dataSnapShot.child("id_supervisor").getValue(String::class.java)
                        var key = dataSnapShot.child("key").getValue(String::class.java)
                        if (id.equals(firebaseUser!!.uid) && id_supervisor.equals(uidSupervisor))
                        {
                            FirebaseDatabase.getInstance().reference.child("Requests").child(key!!).removeValue()
                            ref.removeEventListener(refRequestCancelTemp)
                        }
                    }
                    requestTxtView?.setText("Request")
                }
            }

            override fun onCancelled(error: DatabaseError) {
                TODO("Not yet implemented")
            }

        })

    }
    private fun retrieveRequestStatus()
    {
        var ref = FirebaseDatabase.getInstance().reference.child("Requests")

        refRetrieveTemp = ref.addValueEventListener(object: ValueEventListener
        {
            override fun onDataChange(snapshot: DataSnapshot) {
                if (snapshot.exists())
                {
                    for (dataSnapShot in snapshot.children)
                    {
                        var id = dataSnapShot.child("id").getValue(String::class.java)
                        var id_supervisor = dataSnapShot.child("id_supervisor").getValue(String::class.java)
                        var status = dataSnapShot.child("status").getValue(String::class.java)
                        if (id.equals(firebaseUser!!.uid) && id_supervisor.equals(uidSupervisor))
                        {
                            if (status.equals("pending"))
                            {
                                requestTxtView?.setText("Cancel")
                                requestTxtView?.isEnabled = true
                                btnRequest?.isEnabled = true
                            }
                            if (status.equals("rejected"))
                            {
                                requestTxtView?.setText("Request")
                                requestTxtView?.isEnabled = true
                                btnRequest?.isEnabled = true
                            }
                        }
                    }
                    ref.removeEventListener(refRetrieveTemp)
                }
            }

            override fun onCancelled(error: DatabaseError) {
                TODO("Not yet implemented")
            }
        })
    }


    private fun isAlloted()
    {
        var flag = false
        var ref = FirebaseDatabase.getInstance().reference.child("Requests")

        refIsAllowedTemp = ref.addValueEventListener(object: ValueEventListener
        {
            override fun onDataChange(snapshot: DataSnapshot) {
                if (snapshot.exists())
                {
                    for (dataSnapShot in snapshot.children)
                    {
                        var id = dataSnapShot.child("id").getValue(String::class.java)
                        var id_supervisor = dataSnapShot.child("id_supervisor").getValue(String::class.java)
                        var status = dataSnapShot.child("status").getValue(String::class.java)
                        if (id.equals(firebaseUser!!.uid))
                        {
                            if (status.equals("accepted"))
                            {
                                if (id_supervisor.equals(uidSupervisor))
                                {
                                    flag = true
                                    requestTxtView?.setText("Alloted")
                                    requestTxtView?.isEnabled = false
                                    btnRequest?.isEnabled = false
                                }
                                else
                                {
                                    btnRequest?.visibility = View.INVISIBLE
                                }
                            }
                        }
                    }
                    ref.removeEventListener(refIsAllowedTemp)
                    if (!flag)
                    {
                        retrieveRequestStatus()
                    }
                }
                else
                {
                    requestTxtView?.setText("Request")
                    requestTxtView?.isEnabled = true
                    btnRequest?.isEnabled = true
                }
            }

            override fun onCancelled(error: DatabaseError) {
                TODO("Not yet implemented")
            }
        })
    }

    private fun retrieveSlots(uid:String?)
    {
        var slots = "20"
        var flag = false
        var ref = FirebaseDatabase.getInstance().reference.child("Slots").child(uid!!)
        ref.addValueEventListener(object: ValueEventListener
        {
            override fun onDataChange(snapshot: DataSnapshot)
            {
                if (snapshot.exists())
                {
                    slots = snapshot.child("id").getValue(String::class.java)!!
                    flag = true
                }
                if (flag)
                {
                    var temp = slots.toInt()

                    temp -=20
                    if (temp>0)
                    {
                        statusActiveTxtView?.visibility = View.VISIBLE
                        statusNotActiveTxtView?.visibility = View.INVISIBLE
                    }
                    else
                    {
                        statusActiveTxtView?.visibility = View.INVISIBLE
                        statusNotActiveTxtView?.visibility = View.VISIBLE
                    }
                }
            }

            override fun onCancelled(error: DatabaseError) {
                TODO("Not yet implemented")
            }

        })
    }

    private fun retrieveProjects(uid:String?)
    {
        var ref = FirebaseDatabase.getInstance().reference.child("Projects").child(uid!!)
        ref.addValueEventListener(object: ValueEventListener
        {
            override fun onDataChange(snapshot: DataSnapshot)
            {
                if (snapshot.exists())
                {
                    (arrayList as ArrayList<String>).clear()
                    for (dataSnapShot in snapshot.children)
                    {
                        var project = dataSnapShot.child("project").getValue(String::class.java)
                        arrayList.add(project.toString())
                    }
                    var adapterProjects = ArrayAdapter<String>(this@SupervisorPreview,R.layout.support_simple_spinner_dropdown_item,arrayList)
                    spinner?.adapter = adapterProjects
                }
            }

            override fun onCancelled(error: DatabaseError) {
                TODO("Not yet implemented")
            }

        })
    }

    override fun onPause() {
//        refRequestCancel.removeEventListener(refRequestCancelTemp)
//        refIsAllowed.removeEventListener(refIsAllowedTemp)
//        refRetrieve.removeEventListener(refRetrieveTemp)
        super.onPause()
    }
}

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package com.fyp.evaluation.Student

import androidx.appcompat.app.AppCompatActivity

import android.os.Bundle

import android.view.View

import android.view.WindowManager

import android.widget.*

import androidx.cardview.widget.CardView

import com.fyp.evaluation.R

import com.fyp.evaluation.SharedPreference

import com.google.firebase.auth.FirebaseAuth

import com.google.firebase.auth.FirebaseUser

import com.google.firebase.database.*

import com.makeramen.roundedimageview.RoundedImageView

import com.squareup.picasso.Picasso

class SupervisorPreview : AppCompatActivity() {

private var backBtn:RelativeLayout? = null

private var profileImage:RoundedImageView? = null

private var btnRequest:CardView? = null

private var nameTxtView:TextView? = null

private var requestTxtView:TextView? = null

private var statusActiveTxtView:TextView? = null

private var statusNotActiveTxtView:TextView? = null

private var spinner:Spinner? = null

private var arrayList = mutableListOf<String>()

private var firebaseUser:FirebaseUser? = null

private var uidSupervisor:String = ""

private lateinit var sharedPreference:SharedPreference

private var nameCurrentUser:String? = null

private var profileImageCurrentUser:String? = null

private var semesterCurrentUser:String? = null

private var pnameCurrentUser:String? = null

private var gnameCurrentUser:String = ""

private lateinit var refRequestCancelTemp:ValueEventListener

private lateinit var refRequestCancel:DatabaseReference

private lateinit var refIsAllowedTemp:ValueEventListener

private lateinit var refIsAllowed:DatabaseReference

private lateinit var refRetrieveTemp:ValueEventListener

private lateinit var refRetrieve:DatabaseReference

override fun onCreate(savedInstanceState: Bundle?) {

super.onCreate(savedInstanceState)

setContentView(R.layout.activity_supervisor_preview)

backBtn = findViewById(R.id.btnBack_supervisor_preview)

profileImage = findViewById(R.id.profileImage_supervisor_preview)

btnRequest = findViewById(R.id.Btnrequest_supervisor_preview)

nameTxtView = findViewById(R.id.txtViewname_supervisor_preview)

requestTxtView = findViewById(R.id.txtView_request)

statusActiveTxtView = findViewById(R.id.txtView_statusActive_supervisor_preview)

statusNotActiveTxtView = findViewById(R.id.txtView_statusNotActive_supervisor_preview)

spinner = findViewById(R.id.spinner_supervisor_preview)

window.setFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS,WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS)

if (supportActionBar!=null)

{

supportActionBar!!.hide()

}

spinner?.setPopupBackgroundResource(R.color.card_color1)

sharedPreference = SharedPreference(this@SupervisorPreview)

nameCurrentUser = sharedPreference.getName()

profileImageCurrentUser = sharedPreference.getProfileImage()

pnameCurrentUser = sharedPreference.getProjectName()

gnameCurrentUser = sharedPreference.getGroupName().toString()

semesterCurrentUser = sharedPreference.getSemester()

firebaseUser = FirebaseAuth.getInstance().currentUser

var intent = intent

uidSupervisor = intent.getStringExtra("uid").toString()

var profile_image = intent.getStringExtra("profileImage")

var name = intent.getStringExtra("name")

Picasso.get().load(profile_image).into(profileImage)

nameTxtView?.setText(name.toString())

retrieveSlots(uidSupervisor)

retrieveProjects(uidSupervisor)

isAlloted()

backBtn?.setOnClickListener(object: View.OnClickListener

{

override fun onClick(v: View?) {

finish()

}

})

btnRequest?.setOnClickListener(object: View.OnClickListener

{

override fun onClick(v: View?) {

var status = requestTxtView?.getText().toString()

if (status.equals("Cancel"))

{

cancelRequest()

}

else

{

sendRequest()

}

})

}

private fun sendRequest()

{

requestTxtView?.setText("Sending")

var ref = FirebaseDatabase.getInstance().reference.child("Requests")

var key = ref.push().key

var hashMap = HashMap<String,String>()

hashMap.put("id_supervisor",uidSupervisor)

hashMap.put("id",firebaseUser!!.uid)

hashMap.put("name",nameCurrentUser!!)

hashMap.put("profile_image",profileImageCurrentUser!!)

hashMap.put("project_name",pnameCurrentUser!!)

hashMap.put("group_name",gnameCurrentUser!!)

hashMap.put("semester",semesterCurrentUser!!)

hashMap.put("status","pending")

hashMap.put("key",key.toString())

ref.child(key!!).setValue(hashMap).addOnCompleteListener { task->

if(task.isSuccessful)

{

requestTxtView?.setText("Cancel")

}

private fun cancelRequest()

{

var ref = FirebaseDatabase.getInstance().reference.child("Requests")

refRequestCancelTemp = ref.addValueEventListener(object: ValueEventListener

{

override fun onDataChange(snapshot: DataSnapshot) {

if (snapshot.exists())

{

for (dataSnapShot in snapshot.children)

{

var id = dataSnapShot.child("id").getValue(String::class.java)

var id_supervisor = dataSnapShot.child("id_supervisor").getValue(String::class.java)

var key = dataSnapShot.child("key").getValue(String::class.java)

if (id.equals(firebaseUser!!.uid) && id_supervisor.equals(uidSupervisor))

{

FirebaseDatabase.getInstance().reference.child("Requests").child(key!!).removeValue()

ref.removeEventListener(refRequestCancelTemp)

}

requestTxtView?.setText("Request")

}

override fun onCancelled(error: DatabaseError) {

TODO("Not yet implemented")

}

})

}

private fun retrieveRequestStatus()

{

var ref = FirebaseDatabase.getInstance().reference.child("Requests")

refRetrieveTemp = ref.addValueEventListener(object: ValueEventListener

{

override fun onDataChange(snapshot: DataSnapshot) {

if (snapshot.exists())

{

for (dataSnapShot in snapshot.children)

{

var id = dataSnapShot.child("id").getValue(String::class.java)

var id_supervisor = dataSnapShot.child("id_supervisor").getValue(String::class.java)

var status = dataSnapShot.child("status").getValue(String::class.java)

if (id.equals(firebaseUser!!.uid) && id_supervisor.equals(uidSupervisor))

{

if (status.equals("pending"))

{

requestTxtView?.setText("Cancel")

requestTxtView?.isEnabled = true

btnRequest?.isEnabled = true

}

if (status.equals("rejected"))

{

requestTxtView?.setText("Request")

requestTxtView?.isEnabled = true

btnRequest?.isEnabled = true

}

ref.removeEventListener(refRetrieveTemp)

}

override fun onCancelled(error: DatabaseError) {

TODO("Not yet implemented")

}

})

}

private fun isAlloted()

{

var flag = false

var ref = FirebaseDatabase.getInstance().reference.child("Requests")

refIsAllowedTemp = ref.addValueEventListener(object: ValueEventListener

{

override fun onDataChange(snapshot: DataSnapshot) {

if (snapshot.exists())

{

for (dataSnapShot in snapshot.children)

{

var id = dataSnapShot.child("id").getValue(String::class.java)

var id_supervisor = dataSnapShot.child("id_supervisor").getValue(String::class.java)

var status = dataSnapShot.child("status").getValue(String::class.java)

if (id.equals(firebaseUser!!.uid))

{

if (status.equals("accepted"))

{

if (id_supervisor.equals(uidSupervisor))

{

flag = true

requestTxtView?.setText("Alloted")

requestTxtView?.isEnabled = false

btnRequest?.isEnabled = false

}

else

{

btnRequest?.visibility = View.INVISIBLE

}

ref.removeEventListener(refIsAllowedTemp)

if (!flag)

{

retrieveRequestStatus()

}

else

{

requestTxtView?.setText("Request")

requestTxtView?.isEnabled = true

btnRequest?.isEnabled = true

}

override fun onCancelled(error: DatabaseError) {

TODO("Not yet implemented")

}

})

}

private fun retrieveSlots(uid:String?)

{

var slots = "20"

var flag = false

var ref = FirebaseDatabase.getInstance().reference.child("Slots").child(uid!!)

ref.addValueEventListener(object: ValueEventListener

{

override fun onDataChange(snapshot: DataSnapshot)

{

if (snapshot.exists())

{

slots = snapshot.child("id").getValue(String::class.java)!!

flag = true

}

if (flag)

{

var temp = slots.toInt()

temp -=20

if (temp>0)

{

statusActiveTxtView?.visibility = View.VISIBLE

statusNotActiveTxtView?.visibility = View.INVISIBLE

}

else

{

statusActiveTxtView?.visibility = View.INVISIBLE

statusNotActiveTxtView?.visibility = View.VISIBLE

}

override fun onCancelled(error: DatabaseError) {

TODO("Not yet implemented")

}

})

}

private fun retrieveProjects(uid:String?)

{

var ref = FirebaseDatabase.getInstance().reference.child("Projects").child(uid!!)

ref.addValueEventListener(object: ValueEventListener

{

override fun onDataChange(snapshot: DataSnapshot)

{

if (snapshot.exists())

{

(arrayList as ArrayList<String>).clear()

for (dataSnapShot in snapshot.children)

{

var project = dataSnapShot.child("project").getValue(String::class.java)

arrayList.add(project.toString())

}

var adapterProjects = ArrayAdapter<String>(this@SupervisorPreview,R.layout.support_simple_spinner_dropdown_item,arrayList)

spinner?.adapter = adapterProjects

}

override fun onCancelled(error: DatabaseError) {

TODO("Not yet implemented")

}

})

}

override fun onPause() {

// refRequestCancel.removeEventListener(refRequestCancelTemp)

// refIsAllowed.removeEventListener(refIsAllowedTemp)

// refRetrieve.removeEventListener(refRetrieveTemp)

super.onPause()

}

MeetingNotification.kt

package com.fyp.evaluation.Student

import android.media.Image
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.view.View
import android.widget.ImageView
import android.widget.RelativeLayout
import android.widget.TextView
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView
import com.fyp.evaluation.Adapter.Adapter_MeetingNotification
import com.fyp.evaluation.Firebase
import com.fyp.evaluation.Model.Model_MeetingNotifications
import com.fyp.evaluation.R
import com.google.firebase.auth.FirebaseAuth
import com.google.firebase.auth.FirebaseUser
import com.google.firebase.database.DataSnapshot
import com.google.firebase.database.DatabaseError
import com.google.firebase.database.FirebaseDatabase
import com.google.firebase.database.ValueEventListener

class MeetingNotification : AppCompatActivity() {

    var btnBack:RelativeLayout? = null
    var view:View? = null
    var recyclerView:RecyclerView? = null
    var adapter:Adapter_MeetingNotification? = null
    var arrayList = ArrayList<Model_MeetingNotifications>()

    var firebareUser:FirebaseUser? = null
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_meeting_notification)
        btnBack = findViewById(R.id.btnBack)
        recyclerView = findViewById(R.id.recyclerView)
        view = findViewById(R.id.include)
        if (supportActionBar!=null)
        {
            supportActionBar!!.hide()
        }
        recyclerView?.setHasFixedSize(true)
        recyclerView?.layoutManager = LinearLayoutManager(this)
        firebareUser = FirebaseAuth.getInstance().currentUser
//        var database = Firebase(this)
//        arrayList = database.getMeetingNotifications(firebareUser!!.uid)
        getMeetingNotifications(firebareUser!!.uid)
        btnBack?.setOnClickListener(object: View.OnClickListener
        {
            override fun onClick(v: View?) {
                finish()
            }
        })
    }
    fun getMeetingNotifications(id:String?)
    {
        var flag = false
        var ref = FirebaseDatabase.getInstance().reference.child("MeetingSchedule")
        ref.addValueEventListener(object: ValueEventListener
        {
            override fun onDataChange(snapshot: DataSnapshot) {
                if(snapshot.exists())
                {
                    (arrayList as ArrayList<Model_MeetingNotifications>).clear()
                    for (dataSnapShot in snapshot.children)
                    {
                        var uid = dataSnapShot.child("uid").getValue(String::class.java)
                        var key = dataSnapShot.child("key").getValue(String::class.java)
                        var datetime = dataSnapShot.child("datetime").getValue(String::class.java)
                        var message = dataSnapShot.child("message").getValue(String::class.java)
                        if (uid!!.equals(id))
                        {
                            flag = true
                            arrayList.add(Model_MeetingNotifications(uid,key!!,datetime!!,message!!))
                        }
                    }
                    if (flag==false)
                    {
                        view!!.visibility = View.VISIBLE
                    }
                    else
                    {
                        view?.visibility = View.GONE
                        adapter = Adapter_MeetingNotification(this@MeetingNotification,arrayList)
                        recyclerView?.adapter = adapter
                    }
                }
                else
                {
                    view!!.visibility = View.VISIBLE
                }
            }

            override fun onCancelled(error: DatabaseError) {
                TODO("Not yet implemented")
            }

        })
    }
}

100

package com.fyp.evaluation.Student

import android.media.Image

import androidx.appcompat.app.AppCompatActivity

import android.os.Bundle

import android.view.View

import android.widget.ImageView

import android.widget.RelativeLayout

import android.widget.TextView

import androidx.recyclerview.widget.LinearLayoutManager

import androidx.recyclerview.widget.RecyclerView

import com.fyp.evaluation.Adapter.Adapter_MeetingNotification

import com.fyp.evaluation.Firebase

import com.fyp.evaluation.Model.Model_MeetingNotifications

import com.fyp.evaluation.R

import com.google.firebase.auth.FirebaseAuth

import com.google.firebase.auth.FirebaseUser

import com.google.firebase.database.DataSnapshot

import com.google.firebase.database.DatabaseError

import com.google.firebase.database.FirebaseDatabase

import com.google.firebase.database.ValueEventListener

class MeetingNotification : AppCompatActivity() {

var btnBack:RelativeLayout? = null

var view:View? = null

var recyclerView:RecyclerView? = null

var adapter:Adapter_MeetingNotification? = null

var arrayList = ArrayList<Model_MeetingNotifications>()

var firebareUser:FirebaseUser? = null

override fun onCreate(savedInstanceState: Bundle?) {

super.onCreate(savedInstanceState)

setContentView(R.layout.activity_meeting_notification)

btnBack = findViewById(R.id.btnBack)

recyclerView = findViewById(R.id.recyclerView)

view = findViewById(R.id.include)

if (supportActionBar!=null)

{

supportActionBar!!.hide()

}

recyclerView?.setHasFixedSize(true)

recyclerView?.layoutManager = LinearLayoutManager(this)

firebareUser = FirebaseAuth.getInstance().currentUser

// var database = Firebase(this)

// arrayList = database.getMeetingNotifications(firebareUser!!.uid)

getMeetingNotifications(firebareUser!!.uid)

btnBack?.setOnClickListener(object: View.OnClickListener

{

override fun onClick(v: View?) {

finish()

}

})

}

fun getMeetingNotifications(id:String?)

{

var flag = false

var ref = FirebaseDatabase.getInstance().reference.child("MeetingSchedule")

ref.addValueEventListener(object: ValueEventListener

{

override fun onDataChange(snapshot: DataSnapshot) {

if(snapshot.exists())

{

(arrayList as ArrayList<Model_MeetingNotifications>).clear()

for (dataSnapShot in snapshot.children)

{

var uid = dataSnapShot.child("uid").getValue(String::class.java)

var key = dataSnapShot.child("key").getValue(String::class.java)

var datetime = dataSnapShot.child("datetime").getValue(String::class.java)

var message = dataSnapShot.child("message").getValue(String::class.java)

if (uid!!.equals(id))

{

flag = true

arrayList.add(Model_MeetingNotifications(uid,key!!,datetime!!,message!!))

}

if (flag==false)

{

view!!.visibility = View.VISIBLE

}

else

{

view?.visibility = View.GONE

adapter = Adapter_MeetingNotification(this@MeetingNotification,arrayList)

recyclerView?.adapter = adapter

}

else

{

view!!.visibility = View.VISIBLE

}

override fun onCancelled(error: DatabaseError) {

TODO("Not yet implemented")

}

})

}

GroupMembers.kt

package com.fyp.evaluation.Student

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.view.View
import android.widget.RelativeLayout
import android.widget.Toast
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView
import com.fyp.evaluation.Adapter.Adapter_GroupMembers
import com.fyp.evaluation.Model.Model_GroupMembers
import com.fyp.evaluation.Model.Users
import com.fyp.evaluation.R
import com.google.firebase.auth.FirebaseAuth
import com.google.firebase.auth.FirebaseUser
import com.google.firebase.database.DataSnapshot
import com.google.firebase.database.DatabaseError
import com.google.firebase.database.FirebaseDatabase
import com.google.firebase.database.ValueEventListener

class GroupMembers : AppCompatActivity() {
    private lateinit var backBtn:RelativeLayout
    private lateinit var recyclerView: RecyclerView
    private lateinit var adapter: Adapter_GroupMembers
    private lateinit var arrayList:ArrayList<Model_GroupMembers>
    private var firebaseUser:FirebaseUser? = null
    private var mAauth:FirebaseAuth? = null
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_group_members)
        backBtn = findViewById(R.id.gm_btnBack)
        recyclerView = findViewById(R.id.gm_recyclerView)
        if (supportActionBar!=null)
        {
            supportActionBar!!.hide()
        }
        firebaseUser = FirebaseAuth.getInstance().currentUser

        var ref = FirebaseDatabase.getInstance().reference.child("Users").child(firebaseUser!!.uid)
        ref.addValueEventListener(object: ValueEventListener
        {
            override fun onDataChange(snapshot: DataSnapshot) {
                var gname = snapshot.child("group_name").getValue(String::class.java)
                retrieveGroupMembers(gname)
            }
            override fun onCancelled(error: DatabaseError) {
                TODO("Not yet implemented")
            }
        })

        backBtn.setOnClickListener(object: View.OnClickListener
        {
            override fun onClick(v: View?) {
                finish()
            }
        })

        arrayList = ArrayList()
        recyclerView.setHasFixedSize(true)
        recyclerView.layoutManager = LinearLayoutManager(this)
    }

    private fun retrieveGroupMembers(gname:String?)
    {
        var ref = FirebaseDatabase.getInstance().reference.child("Users")
        ref.addValueEventListener(object: ValueEventListener
        {
            override fun onDataChange(snapshot: DataSnapshot) {
                (arrayList as ArrayList<Model_GroupMembers>).clear()
                for (dataSnapShot in snapshot.children)
                {
                    var data = dataSnapShot.getValue(Users::class.java)
                    var g_name = data?.getGroup_Name()
                    var u_id = data?.getUID()
                    if (g_name.equals(gname) && !(firebaseUser!!.uid.equals(u_id)))
                    {
                        var profileImage= data!!.getProfile_Image()
                        var name = data.getName()
                        var pname = data!!.getProject_Name()
                        var model = Model_GroupMembers(profileImage,name,pname,gname)
                        arrayList.add(model)
                    }
                }
                adapter = Adapter_GroupMembers(applicationContext,arrayList)
                recyclerView.adapter = adapter
            }
            override fun onCancelled(error: DatabaseError) {
                TODO("Not yet implemented")
            }
        })
    }
}

package com.fyp.evaluation.Student

import androidx.appcompat.app.AppCompatActivity

import android.os.Bundle

import android.view.View

import android.widget.RelativeLayout

import android.widget.Toast

import androidx.recyclerview.widget.LinearLayoutManager

import androidx.recyclerview.widget.RecyclerView

import com.fyp.evaluation.Adapter.Adapter_GroupMembers

import com.fyp.evaluation.Model.Model_GroupMembers

import com.fyp.evaluation.Model.Users

import com.fyp.evaluation.R

import com.google.firebase.auth.FirebaseAuth

import com.google.firebase.auth.FirebaseUser

import com.google.firebase.database.DataSnapshot

import com.google.firebase.database.DatabaseError

import com.google.firebase.database.FirebaseDatabase

import com.google.firebase.database.ValueEventListener

class GroupMembers : AppCompatActivity() {

private lateinit var backBtn:RelativeLayout

private lateinit var recyclerView: RecyclerView

private lateinit var adapter: Adapter_GroupMembers

private lateinit var arrayList:ArrayList<Model_GroupMembers>

private var firebaseUser:FirebaseUser? = null

private var mAauth:FirebaseAuth? = null

override fun onCreate(savedInstanceState: Bundle?) {

super.onCreate(savedInstanceState)

setContentView(R.layout.activity_group_members)

backBtn = findViewById(R.id.gm_btnBack)

recyclerView = findViewById(R.id.gm_recyclerView)

if (supportActionBar!=null)

{

supportActionBar!!.hide()

}

firebaseUser = FirebaseAuth.getInstance().currentUser

var ref = FirebaseDatabase.getInstance().reference.child("Users").child(firebaseUser!!.uid)

ref.addValueEventListener(object: ValueEventListener

{

override fun onDataChange(snapshot: DataSnapshot) {

var gname = snapshot.child("group_name").getValue(String::class.java)

retrieveGroupMembers(gname)

}

override fun onCancelled(error: DatabaseError) {

TODO("Not yet implemented")

}

})

backBtn.setOnClickListener(object: View.OnClickListener

{

override fun onClick(v: View?) {

finish()

}

})

arrayList = ArrayList()

recyclerView.setHasFixedSize(true)

recyclerView.layoutManager = LinearLayoutManager(this)

}

private fun retrieveGroupMembers(gname:String?)

{

var ref = FirebaseDatabase.getInstance().reference.child("Users")

ref.addValueEventListener(object: ValueEventListener

{

override fun onDataChange(snapshot: DataSnapshot) {

(arrayList as ArrayList<Model_GroupMembers>).clear()

for (dataSnapShot in snapshot.children)

{

var data = dataSnapShot.getValue(Users::class.java)

var g_name = data?.getGroup_Name()

var u_id = data?.getUID()

if (g_name.equals(gname) && !(firebaseUser!!.uid.equals(u_id)))

{

var profileImage= data!!.getProfile_Image()

var name = data.getName()

var pname = data!!.getProject_Name()

var model = Model_GroupMembers(profileImage,name,pname,gname)

arrayList.add(model)

}

adapter = Adapter_GroupMembers(applicationContext,arrayList)

recyclerView.adapter = adapter

}

override fun onCancelled(error: DatabaseError) {

TODO("Not yet implemented")

}

})

}

Dashboard.kt

package com.fyp.evaluation.Student

import android.content.Intent
import android.content.SharedPreferences
import android.os.Build
import android.os.Bundle
import android.view.MenuItem
import android.view.View
import android.view.WindowManager
import android.widget.ImageView
import android.widget.TextView
import android.widget.Toast
import androidx.appcompat.app.ActionBarDrawerToggle
import androidx.appcompat.app.AppCompatActivity
import androidx.appcompat.widget.Toolbar
import androidx.cardview.widget.CardView
import androidx.core.view.GravityCompat
import androidx.core.view.isVisible
import androidx.drawerlayout.widget.DrawerLayout
import com.fyp.evaluation.*
import com.google.android.material.navigation.NavigationView
import com.google.firebase.auth.FirebaseAuth
import com.google.firebase.auth.FirebaseUser
import com.google.firebase.database.DataSnapshot
import com.google.firebase.database.DatabaseError
import com.google.firebase.database.FirebaseDatabase
import com.google.firebase.database.ValueEventListener
import com.squareup.picasso.Picasso
import de.hdodenhof.circleimageview.CircleImageView

class Dashboard : AppCompatActivity() , NavigationView.OnNavigationItemSelectedListener {

    private lateinit var drawerLayout: DrawerLayout
    private lateinit var menuBtn:ImageView
    var navigationView: NavigationView? = null
    var toolbar:Toolbar? = null
    private var profileImage:CircleImageView? = null
    private var profileImage2:CircleImageView? = null
    private var nameTxtView:TextView? = null
    private var nameTxtView2:TextView? = null
    private var btnCross:ImageView? = null
    private var layoutNotificationCount:CardView? = null
    private var notificationCount:TextView? = null

    private lateinit var sectionGroupMembers:CardView
    private lateinit var sectionSupervisor:CardView
    private lateinit var sectionChat:CardView
    private lateinit var sectionMeetingSchedule:CardView
    private lateinit var sharedPreference: SharedPreference
    private var firebaseUser:FirebaseUser? = null
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.nav_drawer)
        profileImage = findViewById(R.id.img_dashboard)
        nameTxtView = findViewById(R.id.name_dashboard)
        sectionGroupMembers = findViewById(R.id.section_group_members)
        sectionSupervisor = findViewById(R.id.section_supervisor)
        sectionChat = findViewById(R.id.section_chat)
        sectionMeetingSchedule = findViewById(R.id.section_meeting_schedule)
        menuBtn = findViewById(R.id.menubtn)
        toolbar = findViewById(R.id.toolbar)
        drawerLayout = findViewById(R.id.drawer_layout)
        navigationView = findViewById(R.id.nav_view)
        layoutNotificationCount = findViewById(R.id.layout_notification_count)
        notificationCount = findViewById(R.id.tv_notification_count)
        var headerView = navigationView?.getHeaderView(0)
        profileImage2 = headerView?.findViewById(R.id.profileImage_nav_header_student)
        nameTxtView2 = headerView?.findViewById(R.id.txtViewName_nav_header_student)
        btnCross = headerView?.findViewById(R.id.btnCross_nav_header_student)
        if (supportActionBar!=null)
        {
            supportActionBar!!.hide()
        }

        firebaseUser = FirebaseAuth.getInstance().currentUser
        countMeetingNotifications(firebaseUser!!.uid)
        sharedPreference = SharedPreference(this@Dashboard)
        var name = sharedPreference.getName()
        var urlImage = sharedPreference.getProfileImage()
        if (!name.equals("null"))
        {
            nameTxtView?.visibility = View.VISIBLE
            nameTxtView2?.visibility = View.VISIBLE
            nameTxtView?.setText(name)
            nameTxtView2!!.setText(name)
        }
        if (!urlImage.equals("null"))
        {
            Picasso.get().load(urlImage).into(profileImage)
            profileImage?.visibility = View.VISIBLE
            Picasso.get().load(urlImage).into(profileImage2)
            profileImage2?.visibility = View.VISIBLE
        }
        val toggle = ActionBarDrawerToggle(
            this, drawerLayout, toolbar,
            R.string.navigation_drawer_open, R.string.navigation_drawer_close
        )
        toggle.isDrawerIndicatorEnabled = false
        navigationView?.setNavigationItemSelectedListener(this)
        drawerLayout.addDrawerListener(toggle)
        toggle.syncState()
        toggle.toolbarNavigationClickListener =
            View.OnClickListener { drawerLayout.openDrawer(GravityCompat.START) }

        menuBtn.setOnClickListener {
            if (drawerLayout.isDrawerOpen(GravityCompat.START)) {
//                drawerLayout.closeDrawer(GravityCompat.START)
            } else {
                drawerLayout.openDrawer(GravityCompat.START)
            }
        }
        btnCross?.setOnClickListener(object: View.OnClickListener
        {
            override fun onClick(v: View?) {
                if (drawerLayout.isDrawerOpen(GravityCompat.START)) {
                drawerLayout.closeDrawer(GravityCompat.START)
                }
            }
        })
        sectionChat.setOnClickListener(object: View.OnClickListener
        {
            override fun onClick(v: View?) {
                startActivity(Intent(this@Dashboard,MainActivity::class.java))
            }
        })
        sectionGroupMembers.setOnClickListener(object: View.OnClickListener
        {
            override fun onClick(v: View?) {
                startActivity(Intent(this@Dashboard,GroupMembers::class.java))
            }
        })
        sectionSupervisor.setOnClickListener(object: View.OnClickListener
        {
            override fun onClick(v: View?) {
                startActivity(Intent(this@Dashboard,SupervisorsProfiles::class.java))
            }
        })
        sectionMeetingSchedule.setOnClickListener(object: View.OnClickListener
        {
            override fun onClick(v: View?) {
                startActivity(Intent(this@Dashboard,MeetingNotification::class.java))
            }
        })


       layoutNotificationCount?.setOnClickListener(object: View.OnClickListener
       {
           override fun onClick(v: View?) {
               if (layoutNotificationCount?.visibility==View.VISIBLE)
               {
                   startActivity(Intent(this@Dashboard,MeetingNotification::class.java))
               }
           }

       })
    }


    private fun countMeetingNotifications(uid: String)
    {
        var count:Int = 0
        var ref = FirebaseDatabase.getInstance().reference.child("MeetingSchedule")
        ref.addValueEventListener(object: ValueEventListener
        {
            override fun onDataChange(snapshot: DataSnapshot) {
                if (snapshot.exists())
                {
                    count = 0
                    for (dataSnapShot in snapshot.children)
                    {
                        var id = dataSnapShot.child("uid").getValue(String::class.java)
                        if (uid.equals(id))
                        {
                            count++
                        }
                    }
                    if (count>0)
                    {
                        layoutNotificationCount?.visibility = View.VISIBLE
                        notificationCount?.setText(count.toString())
                    }
                    else
                    {
                        count = 0
                        layoutNotificationCount?.visibility = View.INVISIBLE
                        notificationCount?.setText("0")
                    }
//                    ref.removeEventListener(listener!!)
                }
                else
                {
                    count = 0
                    layoutNotificationCount?.visibility = View.INVISIBLE
                    notificationCount?.setText("")
                }
            }

            override fun onCancelled(error: DatabaseError) {
                TODO("Not yet implemented")
            }

        })
    }

    override fun onNavigationItemSelected(item: MenuItem): Boolean {
        var id = item.itemId
        if (id.equals(R.id.nav_logout))
        {
            sharedPreference.clearCategory()
            FirebaseAuth.getInstance().signOut()
            startActivity(Intent(this@Dashboard, Welcome::class.java))
            finish()
        }
        if(id.equals(R.id.nav_profile))
        {
            startActivity(Intent(this@Dashboard, Profile::class.java))
            finish()
        }

        return false
    }
}

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package com.fyp.evaluation.Student

import android.content.Intent

import android.content.SharedPreferences

import android.os.Build

import android.os.Bundle

import android.view.MenuItem

import android.view.View

import android.view.WindowManager

import android.widget.ImageView

import android.widget.TextView

import android.widget.Toast

import androidx.appcompat.app.ActionBarDrawerToggle

import androidx.appcompat.app.AppCompatActivity

import androidx.appcompat.widget.Toolbar

import androidx.cardview.widget.CardView

import androidx.core.view.GravityCompat

import androidx.core.view.isVisible

import androidx.drawerlayout.widget.DrawerLayout

import com.fyp.evaluation.*

import com.google.android.material.navigation.NavigationView

import com.google.firebase.auth.FirebaseAuth

import com.google.firebase.auth.FirebaseUser

import com.google.firebase.database.DataSnapshot

import com.google.firebase.database.DatabaseError

import com.google.firebase.database.FirebaseDatabase

import com.google.firebase.database.ValueEventListener

import com.squareup.picasso.Picasso

import de.hdodenhof.circleimageview.CircleImageView

class Dashboard : AppCompatActivity() , NavigationView.OnNavigationItemSelectedListener {

private lateinit var drawerLayout: DrawerLayout

private lateinit var menuBtn:ImageView

var navigationView: NavigationView? = null

var toolbar:Toolbar? = null

private var profileImage:CircleImageView? = null

private var profileImage2:CircleImageView? = null

private var nameTxtView:TextView? = null

private var nameTxtView2:TextView? = null

private var btnCross:ImageView? = null

private var layoutNotificationCount:CardView? = null

private var notificationCount:TextView? = null

private lateinit var sectionGroupMembers:CardView

private lateinit var sectionSupervisor:CardView

private lateinit var sectionChat:CardView

private lateinit var sectionMeetingSchedule:CardView

private lateinit var sharedPreference: SharedPreference

private var firebaseUser:FirebaseUser? = null

override fun onCreate(savedInstanceState: Bundle?) {

super.onCreate(savedInstanceState)

setContentView(R.layout.nav_drawer)

profileImage = findViewById(R.id.img_dashboard)

nameTxtView = findViewById(R.id.name_dashboard)

sectionGroupMembers = findViewById(R.id.section_group_members)

sectionSupervisor = findViewById(R.id.section_supervisor)

sectionChat = findViewById(R.id.section_chat)

sectionMeetingSchedule = findViewById(R.id.section_meeting_schedule)

menuBtn = findViewById(R.id.menubtn)

toolbar = findViewById(R.id.toolbar)

drawerLayout = findViewById(R.id.drawer_layout)

navigationView = findViewById(R.id.nav_view)

layoutNotificationCount = findViewById(R.id.layout_notification_count)

notificationCount = findViewById(R.id.tv_notification_count)

var headerView = navigationView?.getHeaderView(0)

profileImage2 = headerView?.findViewById(R.id.profileImage_nav_header_student)

nameTxtView2 = headerView?.findViewById(R.id.txtViewName_nav_header_student)

btnCross = headerView?.findViewById(R.id.btnCross_nav_header_student)

if (supportActionBar!=null)

{

supportActionBar!!.hide()

}

firebaseUser = FirebaseAuth.getInstance().currentUser

countMeetingNotifications(firebaseUser!!.uid)

sharedPreference = SharedPreference(this@Dashboard)

var name = sharedPreference.getName()

var urlImage = sharedPreference.getProfileImage()

if (!name.equals("null"))

{

nameTxtView?.visibility = View.VISIBLE

nameTxtView2?.visibility = View.VISIBLE

nameTxtView?.setText(name)

nameTxtView2!!.setText(name)

}

if (!urlImage.equals("null"))

{

Picasso.get().load(urlImage).into(profileImage)

profileImage?.visibility = View.VISIBLE

Picasso.get().load(urlImage).into(profileImage2)

profileImage2?.visibility = View.VISIBLE

}

val toggle = ActionBarDrawerToggle(

this, drawerLayout, toolbar,

R.string.navigation_drawer_open, R.string.navigation_drawer_close

)

toggle.isDrawerIndicatorEnabled = false

navigationView?.setNavigationItemSelectedListener(this)

drawerLayout.addDrawerListener(toggle)

toggle.syncState()

toggle.toolbarNavigationClickListener =

View.OnClickListener { drawerLayout.openDrawer(GravityCompat.START) }

menuBtn.setOnClickListener {

if (drawerLayout.isDrawerOpen(GravityCompat.START)) {

// drawerLayout.closeDrawer(GravityCompat.START)

} else {

drawerLayout.openDrawer(GravityCompat.START)

}

btnCross?.setOnClickListener(object: View.OnClickListener

{

override fun onClick(v: View?) {

if (drawerLayout.isDrawerOpen(GravityCompat.START)) {

drawerLayout.closeDrawer(GravityCompat.START)

}

})

sectionChat.setOnClickListener(object: View.OnClickListener

{

override fun onClick(v: View?) {

startActivity(Intent(this@Dashboard,MainActivity::class.java))

}

})

sectionGroupMembers.setOnClickListener(object: View.OnClickListener

{

override fun onClick(v: View?) {

startActivity(Intent(this@Dashboard,GroupMembers::class.java))

}

})

sectionSupervisor.setOnClickListener(object: View.OnClickListener

{

override fun onClick(v: View?) {

startActivity(Intent(this@Dashboard,SupervisorsProfiles::class.java))

}

})

sectionMeetingSchedule.setOnClickListener(object: View.OnClickListener

{

override fun onClick(v: View?) {

startActivity(Intent(this@Dashboard,MeetingNotification::class.java))

}

})

layoutNotificationCount?.setOnClickListener(object: View.OnClickListener

{

override fun onClick(v: View?) {

if (layoutNotificationCount?.visibility==View.VISIBLE)

{

startActivity(Intent(this@Dashboard,MeetingNotification::class.java))

}

})

}

private fun countMeetingNotifications(uid: String)

{

var count:Int = 0

var ref = FirebaseDatabase.getInstance().reference.child("MeetingSchedule")

ref.addValueEventListener(object: ValueEventListener

{

override fun onDataChange(snapshot: DataSnapshot) {

if (snapshot.exists())

{

count = 0

for (dataSnapShot in snapshot.children)

{

var id = dataSnapShot.child("uid").getValue(String::class.java)

if (uid.equals(id))

{

count++

}

if (count>0)

{

layoutNotificationCount?.visibility = View.VISIBLE

notificationCount?.setText(count.toString())

}

else

{

count = 0

layoutNotificationCount?.visibility = View.INVISIBLE

notificationCount?.setText("0")

}

// ref.removeEventListener(listener!!)

}

else

{

count = 0

layoutNotificationCount?.visibility = View.INVISIBLE

notificationCount?.setText("")

}

override fun onCancelled(error: DatabaseError) {

TODO("Not yet implemented")

}

})

}

override fun onNavigationItemSelected(item: MenuItem): Boolean {

var id = item.itemId

if (id.equals(R.id.nav_logout))

{

sharedPreference.clearCategory()

FirebaseAuth.getInstance().signOut()

startActivity(Intent(this@Dashboard, Welcome::class.java))

finish()

}

if(id.equals(R.id.nav_profile))

{

startActivity(Intent(this@Dashboard, Profile::class.java))

finish()

}

return false

}

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