ArticleActivity.kt

package kr.ac.konkuk.koogle.Activity

import android.annotation.SuppressLint
import android.app.AlertDialog
import android.content.Intent
import android.graphics.drawable.Drawable
import android.net.Uri
import android.os.Bundle
import android.util.Log
import android.view.Menu
import android.view.MenuItem
import android.view.View
import android.widget.LinearLayout
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity
import androidx.core.view.isVisible
import androidx.recyclerview.widget.LinearLayoutManager
import com.bumptech.glide.Glide
import com.bumptech.glide.request.target.CustomTarget
import com.bumptech.glide.request.target.SimpleTarget
import com.bumptech.glide.request.target.ViewTarget
import com.bumptech.glide.request.transition.Transition
import com.google.firebase.auth.FirebaseAuth
import com.google.firebase.auth.ktx.auth
import com.google.firebase.database.*
import com.google.firebase.database.ktx.database
import com.google.firebase.ktx.Firebase
import com.google.firebase.storage.FirebaseStorage
import com.google.firebase.storage.ktx.storage
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.async
import kotlinx.coroutines.launch
import kr.ac.konkuk.koogle.Adapter.ArticleImageAdapter
import kr.ac.konkuk.koogle.DBKeys
import kr.ac.konkuk.koogle.DBKeys.Companion.ARTICLE_ID
import kr.ac.konkuk.koogle.DBKeys.Companion.ARTICLE_IMAGE_FILE_NAME
import kr.ac.konkuk.koogle.DBKeys.Companion.ARTICLE_IMAGE_PATH
import kr.ac.konkuk.koogle.DBKeys.Companion.ARTICLE_TITLE
import kr.ac.konkuk.koogle.DBKeys.Companion.CURRENT_NUMBER
import kr.ac.konkuk.koogle.DBKeys.Companion.DB_ARTICLES
import kr.ac.konkuk.koogle.DBKeys.Companion.DB_GROUPS
import kr.ac.konkuk.koogle.DBKeys.Companion.DB_USERS
import kr.ac.konkuk.koogle.DBKeys.Companion.GROUP_ID
import kr.ac.konkuk.koogle.DBKeys.Companion.USER_EMAIL
import kr.ac.konkuk.koogle.DBKeys.Companion.USER_ID
import kr.ac.konkuk.koogle.DBKeys.Companion.USER_NAME
import kr.ac.konkuk.koogle.DBKeys.Companion.USER_PROFILE_IMAGE_URL
import kr.ac.konkuk.koogle.Model.ArticleModel
import kr.ac.konkuk.koogle.Model.Entity.SearchResultEntity
import kr.ac.konkuk.koogle.Model.UserModel
import kr.ac.konkuk.koogle.databinding.ActivityArticleBinding
import java.text.SimpleDateFormat
import java.util.*
import kr.ac.konkuk.koogle.R


class ArticleActivity : AppCompatActivity() {
    lateinit var binding: ActivityArticleBinding

    val scope = CoroutineScope(Dispatchers.Main)

    private lateinit var writerId:String
    private lateinit var articleId:String
    private lateinit var articleTitle:String

    private lateinit var currentUserId:String
    private lateinit var currentUserName:String
    private lateinit var currentUserProfileImage:String

    private lateinit var recruitmentNumber:String
    private lateinit var currentNumber:String

    private var userIdList:MutableList<String> = mutableListOf()
    private var fileNameList: ArrayList<String> = arrayListOf()

    private lateinit var imageAdapter: ArticleImageAdapter

    private lateinit var mapInfo:SearchResultEntity

    private val auth: FirebaseAuth by lazy {
        Firebase.auth
    }
    private val firebaseUser = auth.currentUser!!

    private val currentUserRef: DatabaseReference by lazy {
        Firebase.database.reference.child(DB_USERS).child(firebaseUser.uid)
    }

    private val currentUserGroupRef: DatabaseReference by lazy {
        currentUserRef.child(DB_GROUPS).child(articleId)
    }

    private val currentArticleRef: DatabaseReference by lazy{
        Firebase.database.reference.child(DB_ARTICLES).child(articleId)
    }

    private val currentGroupRef: DatabaseReference by lazy {
        Firebase.database.reference.child(DB_GROUPS).child(articleId)
    }

    private val currentGroupUsersRef: DatabaseReference by lazy {
        Firebase.database.reference.child(DB_GROUPS).child(articleId).child(DB_USERS)
    }

    private val currentGroupUserRef: DatabaseReference by lazy {
        Firebase.database.reference.child(DB_GROUPS).child(articleId).child(DB_USERS).child(currentUserId)
    }

    private val storage: FirebaseStorage by lazy {
        Firebase.storage
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        binding = ActivityArticleBinding.inflate(layoutInflater)
        setContentView(binding.root)

        initDB()
        initViews()
        initImageRecyclerView()
        initButton()
    }

    private fun initImageRecyclerView() {
        binding.photoImageRecyclerView.layoutManager =
            LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false)
        imageAdapter = ArticleImageAdapter()
        imageAdapter.itemClickListener = object : ArticleImageAdapter.OnItemClickListener {
            override fun onItemClick(holder: ArticleImageAdapter.ViewHolder, uri: Uri) {
//                val intent = Intent(this@ArticleActivity, ImageViewActivity::class.java)
//                intent.putExtra("uri", uri)
//                startActivity(intent)
            }
        }
        binding.photoImageRecyclerView.adapter = imageAdapter
    }

    private fun initViews() {
       setSupportActionBar(binding.articleToolbar)
        val actionBar = supportActionBar!!
        actionBar.apply{
            setDisplayShowCustomEnabled(true)
            setDisplayShowTitleEnabled(false) //기본 제목을 없애줌
            setDisplayHomeAsUpEnabled(true) // 자동으로 뒤로가기 버튼 만들어줌
        }
    }

    override fun onCreateOptionsMenu(menu: Menu?): Boolean {
        //글 작성자만 메뉴 옵션을 볼 수 있도록
        if(::writerId.isInitialized){
            if(firebaseUser.uid == writerId){
                val menuInflater = menuInflater
                menuInflater.inflate(R.menu.article_admin_option_menu, menu)
            }
            else{
                val menuInflater = menuInflater
                menuInflater.inflate(R.menu.article_option_menu, menu)
            }
        }

        return super.onCreateOptionsMenu(menu)
    }

    override fun onOptionsItemSelected(item: MenuItem): Boolean {
        when (item.itemId) {
            R.id.updateArticle -> {
                val intent = Intent(this, EditArticleActivity::class.java)
                //쉽지않네 두 상황(글 처음 작성, 글 수정) 같은 액티비티에서 어떻게 구분하지 -> 액티비티를 구분
                //근데 글 수정하면 기존에 채팅방은 어떻게 하지 -> 그냥 남기자
                intent.putExtra(ARTICLE_INFO, articleId)
                Log.i("ArticleActivity", "onOptionsItemSelected: $articleId")
                startActivity(intent)
                finish()
            }
            R.id.deleteArticle -> {
                //dialog 한번 뿌리고 진짜 삭제
                val ad = AlertDialog.Builder(this@ArticleActivity)
                ad.setMessage("정말 글을 삭제하시겠습니까?")
                ad.setPositiveButton(
                    "아니오"
                ) { dialog, _ ->
                    dialog.dismiss()
                }
                ad.setNegativeButton(
                    "네"
                ) { dialog, _ ->
                    //글과 그룹 모두 삭제
                    deleteArticle()
                    val intent = Intent(this@ArticleActivity,MainActivity::class.java)
                    startActivity(intent)
                    finish()
                    dialog.dismiss()
                }
                ad.show()
            }
            R.id.userBlock -> {
                Toast.makeText(this@ArticleActivity, "해당 유저를 차단하였습니다", Toast.LENGTH_SHORT).show()
            }
            else -> {
                //뒤로가기
                finish()
            }
        }

        return super.onOptionsItemSelected(item)
    }

    private fun deleteArticle() {
        currentArticleRef.setValue(null)
        currentGroupRef.setValue(null)
        val storageRef = storage.reference.child(ARTICLE_IMAGE_PATH)
        for (name in fileNameList) {
            storageRef.child(name).delete()
        }
    }

    private fun initButton() {
        binding.contactButton.setOnClickListener {
            currentUserId = firebaseUser.uid

            //글을 올린 사람이 나 인 경우
            if(writerId == currentUserId){
                Toast.makeText(this, "내가 작성한 글 입니다.", Toast.LENGTH_SHORT).show()
                return@setOnClickListener
            }

            //연락하여 이미 그룹에 포함되어있을 경우
            else if (currentUserId in userIdList){
                Toast.makeText(this, "이미 그룹에 가입하였습니다", Toast.LENGTH_SHORT).show()
                return@setOnClickListener
            }
            else{
                //글을 올린 사람이 내가 아닌 경우
                //채팅방 인원 + 1 명이 모집인원 보다 적을 경우
                if (currentNumber.toInt() + 1 <= recruitmentNumber.toInt())
                {
                    val ad = AlertDialog.Builder(this@ArticleActivity)
                    ad.setMessage("그룹에 참여하시겠습니까?")
                    ad.setPositiveButton(
                        "취소"
                    ) { dialog, _ ->
                        dialog.dismiss()
                    }
                    ad.setNegativeButton(
                        "참여하기"
                    ) { _, _ ->
                        //글과 그룹 모두 삭제
                        showProgress()
                        joinGroup(currentUserId, currentUserName, currentUserProfileImage)
                    }
                    ad.show()
                }
                else {
                    Toast.makeText(this, "모집인원을 초과하였습니다", Toast.LENGTH_SHORT).show()
                    return@setOnClickListener
                }
            }
        }

        binding.showMapButton.setOnClickListener {
            val intent = Intent(this, CheckMapActivity::class.java)
            intent.putExtra(MAP_INFO, mapInfo)
            startActivity(intent)
        }

        //프로필을 누르면 상대방 프로필을 볼 수 있게
        binding.profileImageView.setOnClickListener {
            val intent = Intent(this, CheckProfileActivity::class.java)
            intent.putExtra(WRITER_INFO, writerId)
            Log.i("ArticleActivity", "writerId: $writerId")
            startActivity(intent)
        }
    }

    private fun initDB() {
        val intent = intent
        articleId = intent.getStringExtra(ARTICLE_ID).toString()
        Log.d("ArticleActivity", "articleId: $articleId")
        //파이어베이스 데이터베이스의 정보 가져오기

        scope.launch {
            binding.progressBar.visibility = View.VISIBLE
            CoroutineScope(Dispatchers.IO).async {
                currentArticleRef.addListenerForSingleValueEvent(object : ValueEventListener {
                    @SuppressLint("SimpleDateFormat", "SetTextI18n")
                    override fun onDataChange(snapshot: DataSnapshot) {
                        if (snapshot.exists()) {
                            val articleModel: ArticleModel? = snapshot.getValue(ArticleModel::class.java)
                            val format = SimpleDateFormat("MM월 dd일")

                            if (articleModel != null) {
                                writerId = articleModel.writerId
                                articleTitle = articleModel.articleTitle
                                if (articleModel.articleImageUrl.isEmpty()) {
                                    binding.photoImageRecyclerView.visibility = View.GONE
                                } else {
                                    fileNameList = articleModel.articleImageFileName
                                    initImageRecyclerView()
                                    for (uri in articleModel.articleImageUrl) {
                                        Log.i("uri", Uri.parse(uri).toString())
                                        imageAdapter.addItem(Uri.parse(uri))
                                    }
                                }

                                if (articleModel.writerProfileImageUrl.isEmpty()) {
                                    binding.profileImageView.setImageResource(R.drawable.profile_image)
                                } else {
                                    Glide.with(binding.profileImageView)
                                        .load(articleModel.writerProfileImageUrl)
                                        .into(binding.profileImageView)
                                }

                                //작성 글에 장소를 기입했을 경우
                                if (articleModel.desiredLocation != null){
                                    mapInfo = articleModel.desiredLocation
                                    binding.locationTextView.text = articleModel.desiredLocation.fullAddress
                                }
                                else {
                                    //장소를 기입하지 않았을 경우
                                    //위치 관련 레이아웃이 아예 보이지 않게
                                    binding.locationInfoLayout.visibility =  View.GONE
                                }
                                binding.writerNameTextView.text = articleModel.writerName
                                binding.titleTextView.text = articleModel.articleTitle
                                binding.recruitmentNumberTextView.text = articleModel.recruitmentNumber.toString()+"명"
                                val date = Date(articleModel.articleCreatedAt)
                                binding.dateTextView.text = format.format(date).toString()
                                binding.contentTextView.text = articleModel.articleContent
                                recruitmentNumber = articleModel.recruitmentNumber.toString()
                                currentNumber = articleModel.currentNumber.toString()
                                Glide.with(binding.articleThumbnailBackground)
                                    .load(articleModel.articleThumbnailImageUrl)
                                    .into(binding.articleThumbnailBackground)
                                binding.articleThumbnailBackground.alpha = 0.5f
                            }
                        }
                    }

                    override fun onCancelled(error: DatabaseError) {
                        Toast.makeText(this@ArticleActivity, "데이터 로드 실패", Toast.LENGTH_SHORT).show()
                    }
                })

                currentGroupUsersRef.addListenerForSingleValueEvent(object : ValueEventListener {
                    override fun onDataChange(dataSnapshot: DataSnapshot) {
                        userIdList.clear()

                        //그룹에 속한 유저들의 데이터를 가져옴
                        for (snapshot in dataSnapshot.children) { //반복문을 통해 데이터 List를 추출해냄.
                            val userModel = snapshot.getValue(UserModel::class.java)
                            if (userModel != null) {
                                Log.i("ArticleActivity", "userModel: $userModel")
                                userIdList.add(userModel.userId)
                            }
                        }
                    }
                    override fun onCancelled(error: DatabaseError) {

                    }

                })

                currentUserRef.addListenerForSingleValueEvent(object: ValueEventListener{
                    override fun onDataChange(snapshot: DataSnapshot) {
                        val userModel: UserModel? = snapshot.getValue(UserModel::class.java)
                        if (userModel != null) {
                            Log.d("onDataChange", "userName: ${userModel.userName}")
                            currentUserName = userModel.userName
                            currentUserProfileImage = userModel.userProfileImageUrl
                        }
                    }

                    override fun onCancelled(error: DatabaseError) {
                        Log.d("onCancelled: ", "데이터로드 실패")
                    }
                })
            }.await()
            binding.progressBar.visibility = View.GONE
        }
    }

    private fun joinGroup(userId: String, userName: String, userProfileImage: String) {

        val user = mutableMapOf<String, Any>()
        user[USER_ID] = userId
        user[USER_NAME] = userName
        user[USER_PROFILE_IMAGE_URL] = userProfileImage

        currentGroupUserRef.setValue(user)
//        currentGroupUserRef.updateChildren(user)

        //그룹과 현 게시글에 가입 인원 갱신
        val group = mutableMapOf<String, Any>()
        group[CURRENT_NUMBER] = currentNumber.toInt() + 1
        currentGroupRef.updateChildren(group)

        val article = mutableMapOf<String, Any>()
        article[CURRENT_NUMBER] = currentNumber.toInt() + 1
        currentArticleRef.updateChildren(article)

        val userGroup = mutableMapOf<String,Any>()
        userGroup[GROUP_ID] = articleId
        userGroup[ARTICLE_TITLE] = articleTitle
        currentUserGroupRef.updateChildren(userGroup)

        hideProgress()

        Toast.makeText(this, "채팅방이 생성되었습니다. 그룹을 확인해주세요.", Toast.LENGTH_SHORT).show()

        finish()
    }

    private fun showProgress() {
        binding.progressBar.isVisible = true
    }

    private fun hideProgress() {
        binding.progressBar.isVisible = false
    }

    companion object {
        const val MAP_INFO = "MAP_INFO"
        const val ARTICLE_INFO = "ARTICLE_INFO"
        const val WRITER_INFO = "WRITER_INFO"
    }
}