import path from "path";
import { defineConfig } from "vite";
import react from "@vitejs/plugin-react";
import tailwindcss from "@tailwindcss/vite";

// https://vite.dev/config/
export default defineConfig({
  plugins: [react(), tailwindcss()],
  resolve: {
    alias: {
      "@": path.resolve(__dirname, "./src"),
    },
  },
  server: {
    host: "0.0.0.0",
    proxy: {
      // Proxy all LangGraph API calls through Vite dev server
      // so browser uses same origin (:5173) and Docker internal DNS resolves langgraph-dev
      "/threads": {
        target: process.env.LANGGRAPH_BACKEND_URL ?? process.env.VITE_LANGGRAPH_URL ?? "http://localhost:2024",
        changeOrigin: true,
      },
      "/runs": {
        target: process.env.LANGGRAPH_BACKEND_URL ?? process.env.VITE_LANGGRAPH_URL ?? "http://localhost:2024",
        changeOrigin: true,
      },
      "/assistants": {
        target: process.env.LANGGRAPH_BACKEND_URL ?? process.env.VITE_LANGGRAPH_URL ?? "http://localhost:2024",
        changeOrigin: true,
      },
      "/store": {
        target: process.env.LANGGRAPH_BACKEND_URL ?? process.env.VITE_LANGGRAPH_URL ?? "http://localhost:2024",
        changeOrigin: true,
      },
    },
  },
});