//
//  UMengSDKBootstrap.swift
//  suixinkan
//
//  Created by Codex on 2026/7/2.
//

import Foundation

/// U-APM 采集开关集合，默认使用首版最小合规能力。
struct UMengAPMOptions: Equatable {
    let crashAndBlockMonitorEnable: Bool
    let launchMonitorEnable: Bool
    let memMonitorEnable: Bool
    let oomMonitorEnable: Bool
    let networkEnable: Bool
    let logCollectEnable: Bool

    /// 首版仅开启崩溃、卡顿和启动分析，关闭更敏感的网络、内存、OOM 和日志回捞。
    static let minimumCompliance = UMengAPMOptions(
        crashAndBlockMonitorEnable: true,
        launchMonitorEnable: true,
        memMonitorEnable: false,
        oomMonitorEnable: false,
        networkEnable: false,
        logCollectEnable: false
    )
}

/// 友盟 SDK 调用协议，便于单元测试验证初始化门禁与配置。
@MainActor
protocol UMengSDKConfiguring {
    /// 使用指定 AppKey、渠道和 APM 开关初始化友盟 SDK。
    func configure(appKey: String, channel: String?, options: UMengAPMOptions)
}

/// 生产环境友盟 SDK 调用实现。
@MainActor
struct UMengSDKProductionConfigurator: UMengSDKConfiguring {
    /// 使用 ObjC 适配器完成友盟 SDK 初始化。
    func configure(appKey: String, channel: String?, options: UMengAPMOptions) {
        UMengSDKAdapter.configure(
            appKey: appKey,
            channel: channel,
            crashAndBlockMonitorEnable: options.crashAndBlockMonitorEnable,
            launchMonitorEnable: options.launchMonitorEnable,
            memMonitorEnable: options.memMonitorEnable,
            oomMonitorEnable: options.oomMonitorEnable,
            networkEnable: options.networkEnable,
            logCollectEnable: options.logCollectEnable
        )
    }
}

@MainActor
/// 友盟 SDK 隐私合规初始化入口，确保用户同意隐私政策后才会初始化。
final class UMengSDKBootstrap {
    static let shared = UMengSDKBootstrap(configurator: UMengSDKProductionConfigurator())

    private let configurator: UMengSDKConfiguring
    private(set) var didConfigure = false

    /// 初始化友盟启动器，并允许测试注入替身。
    init(configurator: UMengSDKConfiguring) {
        self.configurator = configurator
    }

    /// 在隐私政策已同意且 AppKey 有效时初始化友盟 SDK。
    @discardableResult
    func configureIfAllowed(
        preferencesStore: AppPreferencesStore,
        appKey: String = UMengConfig.appKey,
        channel: String? = UMengConfig.channel,
        options: UMengAPMOptions = .minimumCompliance
    ) -> Bool {
        guard preferencesStore.loadPrivacyAgreementAccepted() else { return false }
        guard !didConfigure else { return false }

        let normalizedAppKey = appKey.trimmingCharacters(in: .whitespacesAndNewlines)
        guard !normalizedAppKey.isEmpty else { return false }

        configurator.configure(
            appKey: normalizedAppKey,
            channel: normalizedChannel(channel),
            options: options
        )
        didConfigure = true
        return true
    }

    /// 去除渠道首尾空白，空字符串按 nil 处理。
    private func normalizedChannel(_ channel: String?) -> String? {
        let value = channel?.trimmingCharacters(in: .whitespacesAndNewlines) ?? ""
        return value.isEmpty ? nil : value
    }
}