package chats.domain.repository

import androidx.paging.PagingData
import chats.domain.model.Chat
import chats.domain.model.Message
import kotlinx.coroutines.flow.Flow

interface ChatRepository {
    // Чаты
    fun getChatsFlow(): Flow<List<Chat>>
    suspend fun getChats(): List<Chat>
    suspend fun syncChats()

    // Сообщения - Single Source of Truth через Flow
    fun getMessagesFlow(chatId: String): Flow<List<Message>>
    fun getMessagesPagingSource(chatId: String): Flow<PagingData<Message>>
    suspend fun getMessages(chatId: String, cursor: String? = null, pivot: Long? = null, limit: Int? = null): List<Message>
    
    // Отправка сообщений с поддержкой офлайн
    suspend fun sendMessage(
        chatId: String, 
        content: String?, 
        type: String = "text",
        attachments: List<chats.data.remote.api.AttachmentRequest>? = null,
        replyToId: String? = null,
        forwardedFromId: String? = null
    ): Message
    
    suspend fun retryFailedMessage(localId: String)
    suspend fun syncMessagesForChat(chatId: String)
    suspend fun schedulePeriodicSync()

    // Реакции
    suspend fun addReaction(messageId: String, emoji: String)
    suspend fun sendTypingStatus(chatId: String)
    suspend fun markMessagesAsRead(chatId: String, lastMessageId: String, lastReadSequenceId: Int)
    
    // Локальное хранение
    suspend fun saveMessage(message: Message)
    suspend fun deleteLocalMessage(messageId: String)
    
    // Медиа
    suspend fun uploadMedia(file: java.io.File): String
    suspend fun getTrendingGifs(page: Int = 0): List<chats.data.remote.api.KlipyGifDto>
    suspend fun searchGifs(query: String, page: Int = 0): List<chats.data.remote.api.KlipyGifDto>
    suspend fun getGifCategories(): List<chats.data.remote.api.GifCategoryDto>
    
    // Управление чатами
    suspend fun createPersonalChat(userId: String): Chat
    suspend fun deleteMessage(messageId: String, forEveryone: Boolean)
    suspend fun editMessage(messageId: String, content: String): Message
}