import android.content.Intent
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.appcompat.app.AppCompatActivity
import androidx.recyclerview.widget.GridLayoutManager
import androidx.recyclerview.widget.RecyclerView
import io.trtc.tuikit.atomicxcore.api.CompletionHandler
import io.trtc.tuikit.atomicxcore.api.live.LiveInfo
import io.trtc.tuikit.atomicxcore.api.live.LiveListStore
import kotlinx.coroutines.*
import kotlinx.coroutines.flow.*

class LiveListActivity : AppCompatActivity() {
    private val liveListStore = LiveListStore.shared()
    private var liveList: List<LiveInfo> = emptyList()
    private val coroutineScope = CoroutineScope(Dispatchers.Main)

    private lateinit var recyclerView: RecyclerView
    private lateinit var adapter: LiveListAdapter

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_live_list)
        setupUI()
        bindStore()
        fetchLiveList()
    }

    private fun bindStore() {
        // Subscribe to the state to automatically receive list updates
        coroutineScope.launch {
            liveListStore.liveState.liveList.collect { fetchedList ->
                liveList = fetchedList
                adapter.notifyDataSetChanged()
            }
        }
    }

    private fun fetchLiveList() {
        liveListStore.fetchLiveList(
            cursor = "",
            count = 20,
            completion = object : CompletionHandler {
                override fun onSuccess() {
                    println("Live room list fetched successfully")
                }

                override fun onFailure(code: Int, desc: String) {
                    println("Failed to fetch live room list: $desc")
                }
            }
        )
    }

    // When a user clicks an item in the list
    private fun onLiveItemClick(liveInfo: LiveInfo) {
        // Create the audience viewing page and pass the liveId
        val intent = Intent(this, YourAudienceActivity::class.java)
        intent.putExtra("liveId", liveInfo.liveID)
        startActivity(intent)
    }


    // --- RecyclerView related methods ---
    private fun setupUI() {
        recyclerView = findViewById(R.id.recyclerView)
        adapter = LiveListAdapter(liveList) { liveInfo ->
            onLiveItemClick(liveInfo)
        }
        recyclerView.layoutManager = GridLayoutManager(this, 2)
        recyclerView.adapter = adapter
    }

    override fun onDestroy() {
        super.onDestroy()
        coroutineScope.cancel()
    }
}

// RecyclerView Adapter
class LiveListAdapter(
    private var liveList: List<LiveInfo>,
    private val onItemClick: (LiveInfo) -> Unit
) : RecyclerView.Adapter<LiveListAdapter.LiveViewHolder>() {

    class LiveViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
        // Define your ViewHolder view components
        // val titleTextView: TextView = itemView.findViewById(R.id.titleTextView)
        // val coverImageView: ImageView = itemView.findViewById(R.id.coverImageView)
    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): LiveViewHolder {
        val view = LayoutInflater.from(parent.context)
            .inflate(R.layout.item_live_card, parent, false)
        return LiveViewHolder(view)
    }

    override fun onBindViewHolder(holder: LiveViewHolder, position: Int) {
        val liveInfo = liveList[position]
        // Set data to ViewHolder
        // holder.titleTextView.text = liveInfo.liveName
        // Load cover image, etc.

        holder.itemView.setOnClickListener {
            onItemClick(liveInfo)
        }
    }

    override fun getItemCount(): Int = liveList.size
}

import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import androidx.recyclerview.widget.RecyclerView
import io.trtc.tuikit.atomicxcore.api.live.LiveInfo
import io.trtc.tuikit.atomicxcore.api.live.LiveListStore
import kotlinx.coroutines.*
import kotlinx.coroutines.flow.*

// 1. Create a data manager to encapsulate data retrieval and filtering logic
class LiveListManager {
    private val liveListStore = LiveListStore.shared()
    private var fullLiveList: List<LiveInfo> = emptyList()

    // Expose the final filtered live list externally
    private val _filteredLiveList = MutableStateFlow<List<LiveInfo>>(emptyList())
    val filteredLiveList: StateFlow<List<LiveInfo>> = _filteredLiveList

    init {
        // Listen for full list changes
        CoroutineScope(Dispatchers.Main).launch {
            liveListStore.liveState.liveList.collect { fetchedList ->
                fullLiveList = fetchedList
                // By default, publish the complete list
                _filteredLiveList.value = fetchedList
            }
        }
    }

    fun fetchFirstPage() {
        liveListStore.fetchLiveList(cursor = "", count = 20, completion = null)
    }

    /// Filter the live list by category
    fun filterLiveList(categoryId: Int?) {
        if (categoryId == null) {
            // If categoryId is null, show the complete list
            _filteredLiveList.value = fullLiveList
            return
        }

        val filteredList = fullLiveList.filter { liveInfo ->
            liveInfo.categoryList.contains(categoryId)
        }
        _filteredLiveList.value = filteredList
    }
}

// 2. Use the Manager in your LiveListActivity
class LiveListActivity : AppCompatActivity() {
    private val manager = LiveListManager()
    private lateinit var recyclerView: RecyclerView

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_live_list)
        // setupUI()

        // Bind data
        CoroutineScope(Dispatchers.Main).launch {
            manager.filteredLiveList.collect { filteredList ->
                // Refresh UI
               // adapter.updateList(filteredList)
            }
        }

        // Fetch first page
        manager.fetchFirstPage()
    }

    // When the user clicks a top category tag
    fun onCategorySelected(categoryId: Int) {
        manager.filterLiveList(categoryId)
    }

    // ... (RecyclerView related code)
}

import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.appcompat.app.AppCompatActivity
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView
import io.trtc.tuikit.atomicxcore.api.live.LiveInfo
import io.trtc.tuikit.atomicxcore.api.view.CoreViewType
import io.trtc.tuikit.atomicxcore.api.view.LiveCoreView

// 1. Custom RecyclerView.ViewHolder, containing a LiveCoreView internally
class LiveFeedViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
    private var liveCoreView: LiveCoreView? = null
    
    fun setLiveInfo(liveInfo: LiveInfo) {
        // Create a new LiveCoreView for the new live info
        liveCoreView = LiveCoreView(itemView.context, viewType = CoreViewType.PLAY_VIEW)
        liveCoreView?.let { view ->
            (itemView as ViewGroup).addView(view)
            view.layoutParams = ViewGroup.LayoutParams(
                ViewGroup.LayoutParams.MATCH_PARENT,
                ViewGroup.LayoutParams.MATCH_PARENT
            )
        }
    }

    fun startPlay(roomId: String) {
        liveCoreView?.startPreviewLiveStream(roomId, false, callback = null)
    }
    
    fun stopPlay(roomId: String) {
        liveCoreView?.stopPreviewLiveStream(roomId)
    }
}

// 2. Manage playback logic in the Activity
class LiveFeedActivity : AppCompatActivity() {
    
    private lateinit var recyclerView: RecyclerView
    private var liveList: List<LiveInfo> = emptyList()
    private var currentPlayingPosition: Int = -1

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_live_feed)
        setupRecyclerView()
    }

    private fun setupRecyclerView() {
        recyclerView = findViewById(R.id.recyclerView)
        recyclerView.layoutManager = LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false)
        recyclerView.adapter = LiveFeedAdapter(liveList) { position ->
            playVideoAtPosition(position)
        }

        // Listen for scroll state
        recyclerView.addOnScrollListener(object : RecyclerView.OnScrollListener() {
            override fun onScrollStateChanged(recyclerView: RecyclerView, newState: Int) {
                super.onScrollStateChanged(recyclerView, newState)
                if (newState == RecyclerView.SCROLL_STATE_IDLE) {
                    val layoutManager = recyclerView.layoutManager as LinearLayoutManager
                    val firstVisiblePosition = layoutManager.findFirstCompletelyVisibleItemPosition()
                    if (firstVisiblePosition != RecyclerView.NO_POSITION) {
                        playVideoAtPosition(firstVisiblePosition)
                    }
                }
            }
        })
    }

    private fun playVideoAtPosition(position: Int) {
        // Only switch playback when the centered position changes
        if (currentPlayingPosition != position) {
            // Stop current playback
            if (currentPlayingPosition != -1) {
                val currentViewHolder = recyclerView.findViewHolderForAdapterPosition(currentPlayingPosition)
                if (currentViewHolder is LiveFeedViewHolder) {
                    val liveInfo = liveList[currentPlayingPosition]
                    currentViewHolder.stopPlay(liveInfo.liveID)
                }
            }
            
            // Start new playback
            val newViewHolder = recyclerView.findViewHolderForAdapterPosition(position)
            if (newViewHolder is LiveFeedViewHolder) {
                val liveInfo = liveList[position]
                newViewHolder.startPlay(liveInfo.liveID)
                currentPlayingPosition = position
            }
        }
    }
    
    // RecyclerView Adapter
    inner class LiveFeedAdapter(
        private var liveList: List<LiveInfo>,
        private val onItemClick: (Int) -> Unit
    ) : RecyclerView.Adapter<LiveFeedViewHolder>() {
        
        override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): LiveFeedViewHolder {
            val view = LayoutInflater.from(parent.context)
                .inflate(R.layout.item_live_feed, parent, false)
            return LiveFeedViewHolder(view)
        }

        override fun onBindViewHolder(holder: LiveFeedViewHolder, position: Int) {
            val liveInfo = liveList[position]
            holder.setLiveInfo(liveInfo)
            holder.itemView.setOnClickListener {
                onItemClick(position)
            }
        }

        override fun getItemCount(): Int = liveList.size
    }
}