//
//  SpeechManager.swift
//  Crush
//
//  Created by Leon on 2025/8/1.
//

import Foundation

class SpeechManager {
    // MARK: - Properties
    static let shared = SpeechManager()
    private weak var currentModel: SpeechModel?
    private var timer: TimerModel?
    private var timerCount: Int = 0
    
    private init() {}
    
    // MARK: - Private Methods
    private func model(withPath path: String) -> SpeechModel {
        let model = SpeechModel()
        model.path = path
        return model
    }
    
    private func timerAction() {
        timerCount -= 1
        DispatchQueue.main.async {[weak self] in
            guard let `self` = self else {
                return
            }
            currentModel?.timerChangedBlock?(TimeInterval(timerCount/10))
        }
        if let model = currentModel, model.isPlaying {
            if timerCount <= 0 {
                stopPlay(with: model)
            }
        } else {
            timer?.pauseTimer()
        }
        if timerCount < -10000 {
            timerCount = 0
        }
        //dlog("SpeechManager timerAction___\(timerCount)")
    }
    
    // MARK: - Lazy Timer
    private var timerInstance: TimerModel {
        if timer == nil {
            timer = TimerModel()
            timer?.timerBlock = { [weak self] in
                self?.timerAction()
            }
        }
        return timer!
    }
    
    // MARK: - Public Methods
    static func checkVoiceState() -> Bool {
        // 🔥 Assuming PhoneManager and ChatRoomRoute are external dependencies
        if PhoneManager.isInPhoneChannel() || ChatRoomRoute.isChatRoomOpen() {
            UIWindow.key?.makeToast("toast_voice_channel_is_occupied")
            dlog("toast_voice_channel_is_occupied")
            return false
        }
        return true
    }
    
    func modelWithFilePath(_ path: String) -> SpeechModel {
        let model = model(withPath: path)
        model.fileType = .file
        return model
    }
    
    func modelWithFileUrl(_ url: String) -> SpeechModel {
        let model = model(withPath: url)
        model.fileType = .url
        return model
    }
    
    func modelWithBase64String(_ base64String: String) -> SpeechModel {
        let model = model(withPath: base64String)
        model.fileType = .base64
        return model
    }
    
    func startPlay(with model: SpeechModel) {
        guard model.loadState != .loading else { return }
        
        if currentModel === model {
            if currentModel?.isPlaying == true {
                currentModel?.stopPlay()
                return
            }
        }
        
        if let current = currentModel {
            stopPlay(with: current)
        }
        
        model.canAutoPlay = true
        if model.needLoadData() {
            model.loadSpeechFile()
            currentModel = model
        } else {
            currentModel = model
            timerCount = model.audioTime
            model.startPlay()
            timerInstance.startTimer()
        }
    }
    
    func stopPlay(with model: SpeechModel) {
        model.canAutoPlay = false
        // model.stateChangedBlock = nil
        model.stopPlay()
        if model === currentModel {
            timerInstance.pauseTimer()
        }
    }
    
    func stopPlayCurrent() {
        if let model = currentModel {
            stopPlay(with: model)
        }
    }
}

// 🔥 Placeholder for external dependencies
class PhoneManager {
    static func isInPhoneChannel() -> Bool { return false } // 🔥 Placeholder
}

class ChatRoomRoute {
    static func isChatRoomOpen() -> Bool { return false } // 🔥 Placeholder
}