// https://nuxt.com/docs/api/configuration/nuxt-config
const isGenerate = process.env.npm_lifecycle_event === "generate";

const prerenderIgnore = ["/_vercel/image"];
// When generating a static site, we must not ignore internal endpoints/assets that the client fetches at runtime.
if (!isGenerate)
  prerenderIgnore.push("/_ipx", "/_nuxt", "/_i18n", "/__nuxt_content");

export default defineNuxtConfig({
  srcDir: "app",

  // Enable View Transitions API for smooth page transitions
  experimental: {
    viewTransition: true,
  },

  // Configure page and layout transitions
  app: {
    baseURL: "/",
    buildAssetsDir: "/_nuxt/",
    cdnURL: "/",
    pageTransition: {
      name: "page",
      mode: "out-in",
    },
    layoutTransition: {
      name: "layout",
      mode: "out-in",
    },
  },

  modules: [
    "@nuxt/content",
    "@nuxt/fonts",
    "@nuxt/ui",
    "@nuxtjs/i18n",
    "@nuxtjs/color-mode",
    "@nuxt/image",
    "@nuxtjs/sitemap",
  ],
  css: ["~/assets/css/main.css"],
  postcss: {
    plugins: {
      "@csstools/postcss-oklab-function": { preserve: false },
      "@csstools/postcss-relative-color-syntax": { preserve: false },
      "@csstools/postcss-color-mix-function": { preserve: false },
      "postcss-preset-env": {
        stage: 0,
        features: {
          "nesting-rules": true,
        },
      },
      autoprefixer: {},
    },
  },
  vite: {
    css: {
      lightningcss: {
        targets: {
          safari: 15,
        },
      },
    },
  },

  devServer: {
    host: "0.0.0.0",
    port: 5000,
  },
  fonts: {
    defaults: {
      preload: true,
      weights: [300, 400, 500, 600, 700, 800],
      styles: ["normal"],
      subsets: ["latin"],
      fallbacks: {
        "sans-serif": ["system-ui", "-apple-system", "Segoe UI", "sans-serif"],
        serif: ["Georgia", "Times New Roman", "serif"],
      },
    },
    families: [
      { name: "Geist", provider: "google", weights: [400, 500, 600, 700] },
      { name: "Space Grotesk", provider: "google", weights: [500, 600, 700] },
      { name: "DM Sans", provider: "google", weights: [400, 500, 600, 700] },
    ],
  },

  runtimeConfig: {
    public: {
      loadPlausible: "", // overrided by env,
      siteName: "Mohammad Mahdi Mohammadi",
      siteUrl: "https://mahdium.ir", // Used for sitemap and RSS generation
      githubToken: "", // GitHub API token - set via NUXT_PUBLIC_GITHUB_TOKEN env variable
    },
  },

  // Site configuration for sitemap
  site: {
    url: "https://mahdium.ir",
  } as any,

  // Sitemap configuration
  sitemap: {
    gzip: true,
    exclude: [],
    defaults: {
      changefreq: "monthly",
      priority: 0.8,
    },
  } as any,

  image: {
    quality: 80,
    domains: [],
    screens: {
      xs: 320,
      sm: 640,
      md: 768,
      lg: 1024,
      xl: 1280,
      "2xl": 1536,
    },
    formats: ["webp", "jpg"],
  },
  typescript: {
    shim: false,
    tsConfig: {
      compilerOptions: {
        // https://nuxt.com/blog/v3-5#bundler-module-resolution
        moduleResolution: "bundler",
        paths: {
          "@": ["./app"],
          "@/*": ["./app/*"],
        },
      },
    },
  },

  colorMode: {
    classSuffix: "",
    preference: "dark",
    fallback: "dark",
    storageKey: "nuxt-color-mode",
  },

  // Nuxt Content configuration
  content: {
    markdown: {
      mdc: true,
      toc: {
        depth: 3,
        searchDepth: 3,
      },
    },
    documentDriven: false,
    respectPathCase: true,
  } as any,

  i18n: {
    defaultLocale: "en",
    strategy: "prefix_except_default",
    locales: [
      {
        code: "en",
        language: "en-US",
        name: "English",
        dir: "ltr",
        file: "en.json",
      },
      {
        code: "fa",
        language: "fa-IR",
        name: "فارسی",
        dir: "rtl",
        file: "fa.json",
      },
    ],
    langDir: "locales",
    detectBrowserLanguage: {
      useCookie: true,
      cookieKey: "i18n_redirected",
      alwaysRedirect: false,
      redirectOn: "root",
    },
    // Keep runtime vue-i18n options (legacy, warnings)
    vueI18n: "~/i18n.config.ts",
  },

  // Prerender blog routes
  nitro: {
    prerender: {
      crawlLinks: true,
      routes: ["/", "/blog", "/fa/blog", "/blog/rss.xml", "/fa/blog/rss.xml"],
      failOnError: false,
      // Avoid crawling internal endpoints during SSR builds (speeds up builds significantly)
      ignore: prerenderIgnore,
    },
    devProxy: {
      host: "0.0.0.0",
    },
  },

  // Route rules for caching and optimization
  routeRules: {
    // IMPORTANT:
    // Do NOT cache HTML pages for blog routes on Vercel/CDNs.
    // Caching `/blog` or `/blog/<slug>` can serve stale HTML that references old `/_nuxt/*.js` chunks,
    // causing client-side navigation to intermittently 404 until a refresh loads the new HTML.
    "/blog": { headers: { "cache-control": "no-store" } },
    "/fa/blog": { headers: { "cache-control": "no-store" } },
    "/blog/**": { headers: { "cache-control": "no-store" } },
    "/fa/blog/**": { headers: { "cache-control": "no-store" } },

    // These endpoints are safe to cache: they are versioned via query params/build ids.
    "/blog/_payload.json": { swr: 3600 },
    "/fa/blog/_payload.json": { swr: 3600 },
    "/blog/rss.xml": { swr: 3600 },
    "/fa/blog/rss.xml": { swr: 3600 },
  },

  // devtools: { enabled: false },
  compatibilityDate: "2024-07-10",

  components: {
    dirs: [
      {
        path: "~/components",
        pathPrefix: false,
      },
    ],
  },
});