import { app, BrowserWindow, Menu, dialog, ipcMain } from "electron";
import { readFile, writeFile } from "node:fs/promises";
import path from "node:path";
import { fileURLToPath } from "node:url";

const __dirname = path.dirname(fileURLToPath(import.meta.url));

const titleBarThemes = {
  light: {
    color: "#eef1ed",
    symbolColor: "#17241d"
  },
  dark: {
    color: "#132019",
    symbolColor: "#e9f3ec"
  }
};

async function createWindow() {
  const win = new BrowserWindow({
    width: 1220,
    height: 820,
    minWidth: 980,
    minHeight: 680,
    title: "EnvHelper",
    titleBarStyle: "hidden",
    titleBarOverlay: {
      ...titleBarThemes.light,
      height: 34
    },
    autoHideMenuBar: true,
    backgroundColor: "#f6f7f4",
    webPreferences: {
      preload: path.join(__dirname, "preload.js"),
      contextIsolation: true,
      nodeIntegration: false
    }
  });

  Menu.setApplicationMenu(null);

  if (!app.isPackaged) {
    await win.loadURL("http://127.0.0.1:5173");
  } else {
    await win.loadFile(path.join(__dirname, "../dist/index.html"));
  }
}

ipcMain.handle("envhelper:open-file", async () => {
  const result = await dialog.showOpenDialog({
    properties: ["openFile"],
    filters: [{ name: "Environment files", extensions: ["env", "txt", "*"] }]
  });

  if (result.canceled || result.filePaths.length === 0) {
    return null;
  }

  const filePath = result.filePaths[0];
  return {
    path: filePath,
    content: await readFile(filePath, "utf8")
  };
});

ipcMain.handle("envhelper:set-titlebar-theme", (event, theme: "light" | "dark") => {
  BrowserWindow.fromWebContents(event.sender)?.setTitleBarOverlay({
    ...titleBarThemes[theme],
    height: 34
  });
});

ipcMain.handle("envhelper:save-file", async (_event, content: string) => {
  const result = await dialog.showSaveDialog({
    defaultPath: ".env",
    filters: [{ name: "Environment file", extensions: ["env"] }]
  });

  if (result.canceled || !result.filePath) {
    return null;
  }

  await writeFile(result.filePath, content, "utf8");
  return result.filePath;
});

app.whenReady().then(createWindow);

app.on("window-all-closed", () => {
  if (process.platform !== "darwin") {
    app.quit();
  }
});

app.on("activate", () => {
  if (BrowserWindow.getAllWindows().length === 0) {
    void createWindow();
  }
});