import { defineConfig } from "vite";
import react from "@vitejs/plugin-react";
import { execSync } from "child_process";
import { readFileSync } from "fs";
import { resolve } from "path";

function getGitCommit(): string {
  // In Docker builds, VITE_GIT_COMMIT is set via ENV from the build ARG
  if (process.env.VITE_GIT_COMMIT) {
    return process.env.VITE_GIT_COMMIT;
  }
  // Local dev: try git
  try {
    return execSync("git rev-parse --short HEAD", { encoding: "utf-8" }).trim();
  } catch {
    return "dev";
  }
}

function getAppVersion(): string {
  try {
    const pkg = JSON.parse(
      readFileSync(resolve(__dirname, "package.json"), "utf-8"),
    );
    return pkg.version ?? "0.0.0";
  } catch {
    return "0.0.0";
  }
}

export default defineConfig({
  plugins: [react()],
  define: {
    __APP_VERSION__: JSON.stringify(getAppVersion()),
    __BUILD_DATE__: JSON.stringify(new Date().toISOString()),
    __GIT_COMMIT__: JSON.stringify(getGitCommit()),
  },
  server: {
    proxy: {
      "/api": {
        target: "http://localhost:8001",
        changeOrigin: true,
      },
    },
  },
});