import { readFileSync } from "node:fs";
import { dirname, resolve } from "node:path";
import { fileURLToPath } from "node:url";
import node from "@astrojs/node";
import react from "@astrojs/react";
import tailwindcss from "@tailwindcss/vite";
import { defineConfig } from "astro/config";

const __dirname = dirname(fileURLToPath(import.meta.url));

// monorepo 根 .env（Astro 默认只读 app/web/.env，SSR 里 @app/db 要 process.env.TURSO_*）
try {
    const env = readFileSync(resolve(__dirname, "../../.env"), "utf-8");
    for (const line of env.split("\n")) {
        const [key, ...vals] = line.split("=");
        if (key && !key.startsWith("#")) {
            process.env[key.trim()] ??= vals.join("=").trim();
        }
    }
} catch {}

// SSR + Node standalone；@app/* 别名指向各包 dist（dev/build 前需先 build 上游）
export default defineConfig({
    output: "server",
    adapter: node({ mode: "standalone" }),
    integrations: [react()],
    // 路由：动态 [locale]/… 单套视图；/ 与非法前缀在 middleware 处理
    vite: {
        plugins: [tailwindcss()],
        optimizeDeps: {
            // 预打包 react CJS，避免浏览器拿裸 CJS 导致 island 无 createRoot
            include: ["react", "react-dom", "react-dom/client"],
        },
        resolve: {
            alias: {
                "@/*": resolve(__dirname, "src"),
                "@app/i18n": resolve(__dirname, "../../packages/i18n/dist/index.js"),
                "@app/trpc": resolve(__dirname, "../../packages/trpc/dist/index.js"),
                "@app/types": resolve(__dirname, "../../packages/types/dist/index.js"),
                "@app/db": resolve(__dirname, "../../packages/db/dist/index.js"),
                "@app/seo-geo": resolve(__dirname, "../../packages/seo-geo/dist/index.js"),
                "@app/ui": resolve(__dirname, "../../packages/ui/src/index.ts"),
            },
            dedupe: ["react", "react-dom"],
        },
        ssr: {
            noExternal: ["@app/trpc", "@app/db", "@app/i18n", "@app/ui"],
            // webdav 必须走 Node 原生 stream，不能被 SSR 打包掏空
            external: ["webdav"],
        },
    },
    server: {
        port: 4321,
        host: false,
    },
});