//
//  YXTrackingSQLiteManager.swift
//  YXTrackingSDK
//
//  Created by 1234 on 2026/2/6.
//

import UIKit
import SQLite3

class YXTrackingSQLiteManager: NSObject {
    
    static let shared = YXTrackingSQLiteManager()
    
    /// 文件路径管理
    private let fileManager = FileManager.default
        
    /// 文档目录路径
    var documentsDirectory: URL {
        fileManager.urls(for: .documentDirectory, in: .userDomainMask).first!
    }
        
    /// 文件路径
    var fileURL: URL {
        documentsDirectory.appendingPathComponent("tracking.json")
    }
    
    /// JSON编码器
    let encoder = JSONEncoder()
    
    /// JSON解码器
    let decoder = JSONDecoder()
    
    /// 添加跟踪数据到文件
    class func addTrackingData(data: EventRequestResult) {
        var trackingData: [EventRequestResult] = []
        trackingData.append(contentsOf: readTrackingData())
        trackingData.append(data)
        
        let data = try! YXTrackingSQLiteManager.shared.encoder.encode(trackingData)
        try! data.write(to: YXTrackingSQLiteManager.shared.fileURL, options: .atomic)
    }
    
    /// 读取跟踪数据
    class func readTrackingData() -> [EventRequestResult] {
        var trackingData: [EventRequestResult] = []
        /// 判断fileURL是否存在
        guard YXTrackingSQLiteManager.shared.fileManager.fileExists(atPath: YXTrackingSQLiteManager.shared.fileURL.path) else {
            return trackingData
        }
        
        let data = try! Data(contentsOf: YXTrackingSQLiteManager.shared.fileURL)
        let array = try! YXTrackingSQLiteManager.shared.decoder.decode([EventRequestResult].self, from: data)
        trackingData.append(contentsOf: array)
        return trackingData
    }
    
    /// 删除跟踪数据
    class func deleteTrackingData() {
        guard YXTrackingSQLiteManager.shared.fileManager.fileExists(atPath: YXTrackingSQLiteManager.shared.fileURL.path) else {
            YXTracking.shared.debug(message: "SDK tracking data file not exist!")
            return
        }
        try! YXTrackingSQLiteManager.shared.fileManager.removeItem(at: YXTrackingSQLiteManager.shared.fileURL)
        YXTracking.shared.debug(message: "SDK tracking data file deleted!")
    }
    
    /// 获取数据库缓存条数
    class func getTrackingDataCount() -> Int {
        var trackingData: [EventRequestResult] = []
        trackingData.append(contentsOf: readTrackingData())
        return trackingData.count
    }

}