playableads-platform/platform/server/dist/services/previewService.js

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.startPreview = startPreview;
exports.updatePreviewConfig = updatePreviewConfig;
exports.stopPreview = stopPreview;
exports.getPreviewStatus = getPreviewStatus;
const child_process_1 = require("child_process");
const child_process_2 = require("child_process");
const path_1 = __importDefault(require("path"));
const fs_1 = __importDefault(require("fs"));
const http_1 = __importDefault(require("http"));
const configGenerator_1 = require("./configGenerator");
const TEMPLATE_DIR = path_1.default.resolve(__dirname, "../../../../templates/coloring");
const PREVIEW_PORT = 5199;
let viteProcess = null;
let currentCreativeId = null;
/**
 * 等待 HTTP 服务就绪
 */
function waitForReady(url, maxRetries = 15) {
    return new Promise((resolve, reject) => {
        let tries = 0;
        function check() {
            http_1.default.get(url, (res) => {
                if (res.statusCode === 200)
                    resolve();
                else
                    retry();
            }).on("error", retry);
        }
        function retry() {
            if (++tries >= maxRetries) {
                reject(new Error(`Preview server did not start within ${maxRetries}s`));
                return;
            }
            setTimeout(check, 1000);
        }
        check();
    });
}
/**
 * 启动实时预览。等待 Vite dev server 就绪后才返回。
 */
async function startPreview(creativeId, theme, storageDir) {
    // 1. 停止旧的预览（如果有）
    stopPreview();
    // 2. 创建 symlink
    (0, configGenerator_1.createAssetsSymlink)(creativeId, storageDir);
    // 3. 生成配置
    const configContent = (0, configGenerator_1.generateAdConfig)({ creativeId, theme, storageDir });
    const configPath = path_1.default.join(TEMPLATE_DIR, "src", "filler", "_ad_config_.ts");
    fs_1.default.writeFileSync(configPath, configContent, "utf-8");
    // 4. 启动 Vite dev server
    //    base 路径通过 PREVIEW_BASE_PATH 环境变量传入 vite.config.js
    //    注意：nginx proxy_pass 不能有尾部斜杠，以保留 /ads-preview/ 前缀
    const previewBase = process.env.PREVIEW_BASE_PATH || "/";
    console.log(`[preview] Starting Vite dev server on port ${PREVIEW_PORT} (base: ${previewBase})...`);
    viteProcess = (0, child_process_1.spawn)(path_1.default.join(TEMPLATE_DIR, "node_modules", ".bin", "vite"), [
        "--port", String(PREVIEW_PORT),
        "--strictPort",
    ], {
        cwd: TEMPLATE_DIR,
        env: {
            ...process.env,
            AD_CONFIG_PATH: "src/filler/_ad_config_.ts",
        },
        stdio: ["ignore", "pipe", "pipe"],
    });
    viteProcess.stdout?.on("data", (data) => {
        console.log(`[preview:vite] ${data.toString().trim()}`);
    });
    viteProcess.stderr?.on("data", (data) => {
        console.log(`[preview:vite] ${data.toString().trim()}`);
    });
    viteProcess.on("exit", (code) => {
        console.log(`[preview] Vite dev server exited (code ${code})`);
        viteProcess = null;
        currentCreativeId = null;
    });
    currentCreativeId = creativeId;
    // 5. 等待 Vite 就绪
    //    Vite 有 base 路径时，根路径可能 404，需要用带 prefix 的 URL 检查
    const checkUrl = previewBase !== "/"
        ? `http://localhost:${PREVIEW_PORT}${previewBase}`
        : `http://localhost:${PREVIEW_PORT}`;
    console.log(`[preview] Waiting for Vite to be ready (checking ${checkUrl})...`);
    await waitForReady(checkUrl);
    console.log("[preview] Vite is ready.");
    // 生产环境通过 nginx 代理暴露公网 URL，本地开发直接用 localhost
    const localUrl = `http://localhost:${PREVIEW_PORT}`;
    const publicUrl = process.env.PREVIEW_PUBLIC_URL || localUrl;
    return { url: publicUrl };
}
/**
 * 更新预览配置（主题变更时调用）。Vite HMR 会自动检测并刷新页面。
 */
function updatePreviewConfig(creativeId, theme, storageDir) {
    if (currentCreativeId !== creativeId)
        return;
    const configContent = (0, configGenerator_1.generateAdConfig)({ creativeId, theme, storageDir });
    const configPath = path_1.default.join(TEMPLATE_DIR, "src", "filler", "_ad_config_.ts");
    fs_1.default.writeFileSync(configPath, configContent, "utf-8");
    console.log(`[preview] Config updated for creative ${creativeId}`);
}
/**
 * 停止预览
 */
function stopPreview() {
    if (viteProcess) {
        console.log("[preview] Stopping Vite dev server...");
        try {
            viteProcess.kill("SIGTERM");
        }
        catch {
            // ignore
        }
        viteProcess = null;
    }
    currentCreativeId = null;
    // 确保端口释放
    try {
        (0, child_process_2.execSync)(`lsof -ti :${PREVIEW_PORT} | xargs kill -9 2>/dev/null`, { stdio: "ignore" });
    }
    catch { }
}
function getPreviewStatus() {
    return {
        active: viteProcess !== null && currentCreativeId !== null,
        creativeId: currentCreativeId,
        url: currentCreativeId ? `http://localhost:${PREVIEW_PORT}` : null,
    };
}
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