import { defineConfig, HmrContext } from "vite";
import react from "@vitejs/plugin-react";
import { resolve } from "path";
import { readFileSync } from "fs";
import { imagetools } from "vite-imagetools";

const host = process.env.TAURI_DEV_HOST;

// Read version from workspace Cargo.toml
function getVersionFromCargoToml(): string {
  const cargoToml = readFileSync(resolve(__dirname, "../Cargo.toml"), "utf-8");
  const versionMatch = cargoToml.match(/^\[workspace\.package\][\s\S]*?^version\s*=\s*"(.+?)"$/m);
  if (!versionMatch) {
    throw new Error("Failed to find version in workspace Cargo.toml");
  }
  return versionMatch[1];
}

const fullReloadAlways = {
  name: "full-reload-always",
  handleHotUpdate(context: HmrContext): void {
    context.server.ws.send({ type: "full-reload" });
  },
};

// https://vite.dev/config/
export default defineConfig(({ mode }) => ({
  base: process.env.GITHUB_PAGES === "true" ? "/borde.rs/" : "/",

  plugins: [
    react(),
    imagetools(),
    fullReloadAlways,
    // Plugin to prevent .meta files from falling back to index.html
    {
      name: "block-meta-fallback",
      configureServer(server) {
        server.middlewares.use((req, res, next) => {
          if (req.url?.endsWith(".meta")) {
            res.statusCode = 404;
            res.end("Not Found");
            return;
          }
          next();
        });
      },
    },
  ],

  define: {
    __DESKTOP__: JSON.stringify(mode !== "browser"),
    __APP_VERSION__: JSON.stringify(getVersionFromCargoToml()),
  },

  resolve: {
    alias: {
      "@": resolve(__dirname, "src"),
      "@wasm": resolve(__dirname, "pkg"),
    },
  },

  build: {
    outDir: mode === "browser" ? "dist/browser" : "dist",
  },

  // Vite options tailored for Tauri development and only applied in `tauri dev` or `tauri build`
  //
  // 1. prevent Vite from obscuring rust errors
  clearScreen: false,
  // 2. tauri expects a fixed port, fail if that port is not available
  server: {
    port: 1420,
    strictPort: true,
    host: host || false,
    hmr: host
      ? {
          protocol: "ws",
          host,
          port: 1421,
        }
      : undefined,
    watch: {
      // 3. tell Vite to ignore watching `src-tauri`
      ignored: ["**/crates/borders-desktop/**"],
    },
    // Add headers for SharedArrayBuffer support in browser mode
    headers:
      mode === "browser"
        ? {
            "Cross-Origin-Opener-Policy": "same-origin",
            "Cross-Origin-Embedder-Policy": "require-corp",
          }
        : undefined,
  },
}));