import tailwindcss from "@tailwindcss/vite";
import react from "@vitejs/plugin-react-swc";
import { defineConfig, loadEnv, type Plugin, type PreviewServer, type ViteDevServer } from "vite";
import { fileURLToPath, URL } from "node:url";
import { createEdgeTtsMiddleware } from "./server/edge-tts-service";

const RUNTIME_CONFIG_PATH = "/runtime-config.js";

function renderRuntimeConfig(values: Record<string, string>) {
  const config = {
    TJWATER_MAPBOX_ACCESS_TOKEN: values.TJWATER_MAPBOX_ACCESS_TOKEN || "",
    TJWATER_MAP_URL: values.TJWATER_MAP_URL || "https://geoserver.waternetwork.cn/geoserver",
    TJWATER_GEOSERVER_WORKSPACE: values.TJWATER_GEOSERVER_WORKSPACE || "tjwater",
    TJWATER_AGENT_API_BASE_URL: values.TJWATER_AGENT_API_BASE_URL || "http://127.0.0.1:8787",
    TJWATER_ENABLE_DEV_PANEL: values.TJWATER_ENABLE_DEV_PANEL || "false",
    TJWATER_ENABLE_MSW: values.TJWATER_ENABLE_MSW || "false"
  };

  return `globalThis.__TJWATER_CONFIG__ = ${JSON.stringify(config)};\n`;
}

function runtimeConfigPlugin(values: Record<string, string>): Plugin {
  const installMiddleware = (server: ViteDevServer | PreviewServer) => {
    server.middlewares.use(createEdgeTtsMiddleware());
    server.middlewares.use((request, response, next) => {
      if (request.url?.split("?", 1)[0] !== RUNTIME_CONFIG_PATH) {
        next();
        return;
      }

      response.statusCode = 200;
      response.setHeader("Content-Type", "application/javascript; charset=utf-8");
      response.setHeader("Cache-Control", "no-store");
      response.end(renderRuntimeConfig(values));
    });
  };

  return {
    name: "tjwater-runtime-config",
    configureServer: installMiddleware,
    configurePreviewServer: installMiddleware
  };
}

export default defineConfig(({ mode }) => {
  const env = loadEnv(mode, process.cwd(), "");

  return {
    plugins: [runtimeConfigPlugin(env), react(), tailwindcss()],
    resolve: {
      alias: {
        "@": fileURLToPath(new URL("./src", import.meta.url))
      }
    },
    test: {
      environment: "jsdom",
      globals: true,
      setupFiles: ["./src/test/setup.ts"]
    }
  };
});