const app = getApp();

// OTA 超时时间：1 分钟
const OTA_TIMEOUT_MS = 1 * 60 * 1000;

Component({
    data: {
        otaProgress: 0,
        otaStatus: '', // 'upgrading' | 'success' | 'failed' | ''
        otaMessage: ''
    },

    lifetimes: {
        attached() {
            // OTA 升级由父页面在 activeProtocol 就绪后显式调用，此处不自动触发
        },
        detached() {
            // 组件销毁时清除超时定时器，防止泄漏
            this._clearOtaTimer();
        }
    },

    methods: {
        // 完成按钮回调（成功或失败后展示）
        bindOk() {
            this.triggerEvent('deviceEvent', { status: true });
        },

        // 清除 OTA 超时定时器
        _clearOtaTimer() {
            if (this._otaTimer) {
                clearTimeout(this._otaTimer);
                this._otaTimer = null;
            }
        },

        // 开始 OTA 升级
        startOtaUpgrade() {
            const activeProtocol = app.globalData.ppScale.activeProtocol;

            if (!activeProtocol) {
                wx.showToast({ title: '设备未连接，请重新连接', icon: 'none' });
                return;
            }

            wx.showLoading({ title: '正在升级...', mask: true });

            this.setData({
                otaProgress: 0,
                otaStatus: 'upgrading',
                otaMessage: '升级初始化中...'
            });

            // 启动超时保护，3 分钟内未完成则视为失败
            this._clearOtaTimer();
            this._otaTimer = setTimeout(() => {
                console.log('OTA 升级超时');
                this.handleOtaFailed('升级超时，设备即将重启');
            }, OTA_TIMEOUT_MS);

            // 回调参数为 { progress, isFailed }
            activeProtocol.codeOtaUpdate((res) => {
                console.log('OTA 升级回调:', res);

                if (res && res.progress !== undefined) {
                    this.setData({
                        otaProgress: res.progress,
                        otaMessage: `升级进度: ${res.progress}%`
                    });
                }

                if (res && res.isFailed === false) {
                    this._clearOtaTimer();
                    this.handleOtaSuccess();
                } else if (res && res.isFailed === true) {
                    this._clearOtaTimer();
                    this.handleOtaFailed();
                }
            });
        },

        // OTA 升级成功处理
        handleOtaSuccess() {
            wx.hideLoading();
            this.setData({
                otaProgress: 100,
                otaStatus: 'success',
                otaMessage: '升级成功，设备即将重启'
            });
            wx.showToast({ title: 'OTA 升级成功', icon: 'success', duration: 2000 });
            setTimeout(() => {
                this.bindOk();
            }, 2000);
        },

        // OTA 升级失败处理
        handleOtaFailed(msg) {
            wx.hideLoading();
            const message = msg || '升级失败，设备即将重启';
            this.setData({
                otaProgress: 0,
                otaStatus: 'failed',
                otaMessage: message
            });
            wx.showToast({ title: message, icon: 'none', duration: 2000 });
            setTimeout(() => {
                this.bindOk();
            }, 2000);
        }
    }
});