#!/usr/bin/env node
/**
 * run.js — PC 侧执行器：构建 → 下发到真机 → 收集日志 → 汇总断言
 *
 * 把"人肉复制脚本到手机再点运行"变成一条命令，并且**返回可判断的退出码**，
 * 这样它既能给人用，也能接 CI。
 *
 * 用法示例：
 *   node tools/run.js --self-test                 # 只跑设备端纯函数自检（不碰界面）
 *   node tools/run.js --dry-run                   # 走完整流程但不真的发评论
 *   node tools/run.js --keyword cat --videos 1    # 换关键词跑一条
 *   node tools/run.js --push-config               # 把配置推到手机固定路径
 *   node tools/run.js                             # 正式跑（会真的发评论）
 *
 * 注意：MCP 单次下发有 120s 上限。maxVideos 较大时请分批运行，
 *       别指望一次下发里连看十条视频。
 */
'use strict';

const fs = require('fs');
const path = require('path');
const { execFileSync } = require('child_process');

const build = require('./build');
const mcp = require('./mcp');

const CONFIG_LOCAL = path.join(build.ROOT, 'config', 'tiktok-auto.config.json');
const DEVICE_CONFIG_PATH = '/sdcard/Download/tiktok-auto/config.json';
const MAX_DEVICE_TIMEOUT_MS = 120000;

function parseArgs(argv) {
    const options = {
        selfTest: false,
        pushConfig: false,
        dryRun: false,
        keyword: null,
        videos: null,
        configFile: null,
        timeoutMs: 115000,
        deviceId: null,
        noBuild: false
    };

    for (let i = 0; i < argv.length; i += 1) {
        const arg = argv[i];
        switch (arg) {
            case '--self-test': options.selfTest = true; break;
            case '--push-config': options.pushConfig = true; break;
            case '--dry-run': options.dryRun = true; break;
            case '--keyword': options.keyword = argv[i + 1]; i += 1; break;
            case '--videos': options.videos = Number(argv[i + 1]); i += 1; break;
            case '--config': options.configFile = argv[i + 1]; i += 1; break;
            case '--timeout': options.timeoutMs = Number(argv[i + 1]); i += 1; break;
            case '--device': options.deviceId = argv[i + 1]; i += 1; break;
            case '--eval': options.evalFile = argv[i + 1]; i += 1; break;
            case '--raw': options.raw = true; break;
            case '--no-build': options.noBuild = true; break;
            default: break;
        }
    }
    return options;
}

/** adb 只用于两件事：推配置、查设备；脚本下发一律走 MCP */
function adb(args, options = {}) {
    const full = options.serial ? ['-s', options.serial].concat(args) : args;
    return execFileSync('adb', full, { encoding: 'utf8', maxBuffer: 16 * 1024 * 1024 });
}

function resolveSerial(explicit) {
    if (explicit) {
        return explicit;
    }
    if (process.env.ADB_SERIAL) {
        return process.env.ADB_SERIAL;
    }
    const output = adb(['devices']);
    const line = output.split(/\r?\n/).slice(1).find((row) => row.includes('\tdevice'));
    return line ? line.split('\t')[0].trim() : null;
}

function pushConfig(serial) {
    const target = DEVICE_CONFIG_PATH;
    console.log(`推送配置 → ${target}`);
    adb(['shell', `mkdir -p ${path.posix.dirname(target)}`], { serial });
    adb(['push', CONFIG_LOCAL, target], { serial });
    console.log('配置推送完成。设备上的脚本会优先读取它。');
}

function buildInjected(options) {
    const injected = {};
    const fromFile = options.configFile
        ? JSON.parse(fs.readFileSync(options.configFile, 'utf8'))
        : null;

    if (options.dryRun) {
        injected.runtime = Object.assign(injected.runtime || {}, { dryRun: true });
    }
    if (options.keyword) {
        injected.target = Object.assign(injected.target || {}, { keyword: options.keyword });
    }
    if (options.videos) {
        injected.target = Object.assign(injected.target || {}, { maxVideos: options.videos });
    }
    if (!fromFile) {
        return Object.keys(injected).length > 0 ? injected : null;
    }

    // 文件里的配置覆盖命令行注入，避免"命令行比配置文件还权威"的反直觉行为
    const merged = Object.assign({}, injected, fromFile);
    merged.target = Object.assign({}, injected.target, fromFile.target);
    merged.runtime = Object.assign({}, injected.runtime, fromFile.runtime);
    return merged;
}

function compile(options) {
    if (options.evalFile) {
        // 调试模式：加载全部模块，但入口换成指定文件里的代码，
        // 这样就能在真机上直接调用模块里的函数做诊断，而不用去猜。
        const code = fs.readFileSync(options.evalFile, 'utf8');
        return build.build({ customEntry: code + '\nconsole.log("__END__");' }).source;
    }

    const { source } = build.build({ selfTest: options.selfTest });
    let finalSource = source;

    const injected = options.selfTest ? null : buildInjected(options);
    if (injected) {
        finalSource = source.replace(build.INJECT_MARKER, `/*TTA_INJECTED_CONFIG*/${JSON.stringify(injected)}`);
        console.log('注入配置覆盖项：' + JSON.stringify(injected));
    }
    return finalSource;
}

function parseLogs(logs) {
    const report = { result: null, ended: false, warnings: [], errors: [], steps: [] };
    for (const line of logs || []) {
        if (line.includes('__END__') && !line.includes('AUTOMCP::')) {
            report.ended = true;
        }
        const resultMatch = line.match(/\[TTA\]RESULT (.*)$/);
        if (resultMatch) {
            try {
                report.result = JSON.parse(resultMatch[1]);
            } catch (error) {
                report.warnings.push('RESULT 行解析失败：' + resultMatch[1]);
            }
        }
        const stepMatch = line.match(/\[TTA\]\+(\d+)ms\[(STEP|WARN|ERROR|INFO)\]/);
        if (stepMatch) {
            if (stepMatch[2] === 'WARN') { report.warnings.push(line); }
            if (stepMatch[2] === 'ERROR') { report.errors.push(line); }
            if (stepMatch[2] === 'STEP') { report.steps.push(line); }
        }
    }
    return report;
}

/**
 * 判定"这次算不算成功"。
 * dryRun 下本来就不会有评论发出去，所以判据要跟着换——
 * 否则脚本明明跑通了，退出码却是失败，会误导 CI。
 */
function isSuccess(report, options) {
    const result = report.result;
    if (!result || result.ok !== true) {
        return false;
    }
    if (options.dryRun) {
        return result.attemptedVideos > 0;
    }
    const anySkipped = (result.details || []).some((d) => d.comment && d.comment.skipped);
    return anySkipped ? result.attemptedVideos > 0 : result.postedComments > 0;
}

function summarize(report, options) {
    console.log('\n──────── 设备端日志 ────────');
    if (report.steps.length > 0) {
        console.log('步骤：');
        report.steps.forEach((line) => console.log('  ' + line.replace(/^.*?\[TTA\]/, '')));
    }
    if (report.warnings.length > 0) {
        console.log(`警告 ${report.warnings.length} 条：`);
        report.warnings.forEach((line) => console.log('  ' + line.replace(/^.*?\[TTA\]/, '')));
    }
    if (report.errors.length > 0) {
        console.log(`错误 ${report.errors.length} 条：`);
        report.errors.forEach((line) => console.log('  ' + line.replace(/^.*?\[TTA\]/, '')));
    }

    console.log('\n──────── 结论 ────────');
    if (options.selfTest) {
        const pass = (report.stdOut || []).some((line) => line.includes('SELFTEST_ALL_PASS'));
        console.log(pass ? '✅ 自检全部通过' : '❌ 自检存在失败项');
        return pass;
    }
    if (!report.result) {
        console.log('❌ 没有拿到结构化结果（脚本可能提前中断）');
        return false;
    }
    const result = report.result;
    console.log(`流程 ok=${result.ok}  尝试视频=${result.attemptedVideos}  成功评论=${result.postedComments}`);
    (result.details || []).forEach((detail, index) => {
        const watch = detail.watch || {};
        const comment = detail.comment || {};
        console.log(`  #${index + 1} ${detail.caption}`);
        console.log(`      观看 ${watch.actualMs}ms/目标 ${watch.requestedMs}ms  ${watch.completed ? '完成' : '未完成'}` +
            `  证据源=${watch.probeMode}${watch.degraded ? '(降级)' : ''}`);
        console.log(`      评论 ok=${comment.ok} via=${comment.via}` +
            (comment.confidence ? ` 置信度=${comment.confidence}` : '') +
            ` 计数 ${comment.countBefore}→${comment.countAfter}` +
            ` 文案=${JSON.stringify(comment.text)}`);
    });
    if ((result.errors || []).length > 0) {
        console.log('  错误：');
        result.errors.forEach((error) => console.log('    - ' + error));
    }
    return isSuccess(report, options);
}

async function main() {
    const options = parseArgs(process.argv.slice(2));
    const serial = resolveSerial(null);

    console.log('──────── 环境 ────────');
    try {
        const status = await mcp.health();
        console.log(`MCP 桥：${status.ok ? '正常' : '异常'}，已连接设备 ${status.devices} 台`);
    } catch (error) {
        console.error('MCP 桥不可达，请确认 VS Code 扩展已激活：' + error.message);
        process.exit(2);
    }

    if (options.pushConfig) {
        if (!serial) {
            console.error('没有找到 adb 设备，无法推送配置');
            process.exit(2);
        }
        pushConfig(serial);
        return;
    }

    // 设备没挂上就先连一下（MCP 不会隐式建连）
    const devices = await mcp.listDevices();
    if (!Array.isArray(devices) || devices.length === 0) {
        console.log('设备未连接，尝试 device_connect(mode=adb)…');
        await mcp.connect(serial || undefined);
    }

    console.log('\n──────── 构建 ────────');
    let source;
    if (options.noBuild && fs.existsSync(build.OUT_FILE)) {
        source = fs.readFileSync(build.OUT_FILE, 'utf8');
        console.log('复用已有产物 ' + build.OUT_FILE);
    } else {
        source = compile(options);
        build.writeDist(source);
        console.log(`构建完成：${build.OUT_FILE}（${Buffer.byteLength(source, 'utf8')} 字节）`);
    }

    console.log('\n──────── 下发执行 ────────');
    const timeoutMs = Math.min(options.timeoutMs, MAX_DEVICE_TIMEOUT_MS);
    console.log(`下发 ${Buffer.byteLength(source, 'utf8')} 字节，超时上限 ${timeoutMs}ms`);
    const started = Date.now();

    const response = await mcp.runCode(source, { timeoutMs, deviceId: options.deviceId });
    const cost = Date.now() - started;

    if (response.status === 'needs_confirmation') {
        console.error('⚠️  脚本命中危险调用黑名单，需要人工确认。confirmToken=' + response.confirmToken);
        process.exit(3);
    }
    if (response.error) {
        console.error('设备端错误：' + response.error);
    }
    console.log(`状态=${response.status} 往返=${cost}ms 日志 ${(response.logs || []).length} 行`);

    const report = parseLogs(response.logs);
    report.stdOut = response.logs || [];

    if (options.raw) {
        console.log('\n──────── 原始日志 ────────');
        (response.logs || []).forEach((line) => console.log(line));
    }

    const ok = options.raw ? (response.status === 'ok') : summarize(report, options);

    if (response.status !== 'ok') {
        console.log(`\n⚠️  status=${response.status}，注意这不是"成功"，请先看上文的错误/警告。`);
    }
    process.exit(ok ? 0 : 1);
}

main().catch((error) => {
    console.error('执行失败：' + (error && error.stack ? error.stack : error));
    process.exit(1);
});