package com.github.libretube.db

import com.github.libretube.api.obj.Streams
import com.github.libretube.constants.PreferenceKeys
import com.github.libretube.db.DatabaseHolder.Companion.Database
import com.github.libretube.db.obj.SearchHistoryItem
import com.github.libretube.db.obj.WatchHistoryItem
import com.github.libretube.extensions.query
import com.github.libretube.extensions.toID
import com.github.libretube.helpers.PreferenceHelper
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.withContext

object DatabaseHelper {
    private const val MAX_SEARCH_HISTORY_SIZE = 20

    suspend fun addToWatchHistory(videoId: String, streams: Streams) = withContext(Dispatchers.IO) {
        val watchHistoryItem = WatchHistoryItem(
            videoId,
            streams.title,
            streams.uploadDate.toString(),
            streams.uploader,
            streams.uploaderUrl.toID(),
            streams.uploaderAvatar,
            streams.thumbnailUrl,
            streams.duration
        )
        Database.watchHistoryDao().insertAll(listOf(watchHistoryItem))
        val maxHistorySize = PreferenceHelper.getString(PreferenceKeys.WATCH_HISTORY_SIZE, "100")
        if (maxHistorySize == "unlimited") {
            return@withContext
        }

        // delete the first watch history entry if the limit is reached
        val watchHistory = Database.watchHistoryDao().getAll()
        if (watchHistory.size > maxHistorySize.toInt()) {
            Database.watchHistoryDao().delete(watchHistory.first())
        }
    }

    fun addToSearchHistory(searchHistoryItem: SearchHistoryItem) {
        query {
            Database.searchHistoryDao().insertAll(searchHistoryItem)

            // delete the first watch history entry if the limit is reached
            val searchHistory = Database.searchHistoryDao().getAll()
            if (searchHistory.size > MAX_SEARCH_HISTORY_SIZE) {
                Database.searchHistoryDao()
                    .delete(searchHistory.first())
            }
        }
    }
}