import path from "node:path";
import { fileURLToPath } from "node:url";
import { defineConfig } from "vite";
import react from "@vitejs/plugin-react";

// `__dirname` is undefined in ESM; compute it ourselves so the alias
// resolves correctly under both local Node and the Docker build.
const __dirname = path.dirname(fileURLToPath(import.meta.url));

// During dev (`npm run dev`), Vite serves on :5173 and proxies /api +
// /mcp + /health to the FastAPI server on :8765 (or BACKEND_PORT env).
const BACKEND_PORT = process.env.BACKEND_PORT || "8765";

export default defineConfig({
  plugins: [react()],
  resolve: {
    alias: {
      "@": path.resolve(__dirname, "./src"),
    },
  },
  server: {
    port: 5173,
    proxy: {
      "/api": `http://127.0.0.1:${BACKEND_PORT}`,
      "/mcp": `http://127.0.0.1:${BACKEND_PORT}`,
      "/health": `http://127.0.0.1:${BACKEND_PORT}`,
    },
  },
  build: {
    outDir: "dist",
    sourcemap: false,
  },
});