import { mkdtemp, readFile, rm, writeFile } from 'node:fs/promises';
import { tmpdir } from 'node:os';
import path from 'node:path';
import { closeElectronApp, expect, getStableWindow, test } from './fixtures/electron';

const BOUND_PROJECT_ID = 'aaaaaaaa-aaaa-4aaa-8aaa-aaaaaaaaaaaa';

async function readProjectConfig(projectPath: string): Promise<Record<string, unknown>> {
  return JSON.parse(await readFile(path.join(projectPath, '.niancode', 'project.json'), 'utf8')) as Record<string, unknown>;
}

async function selectProgrammingProjectFolder(
  app: Parameters<typeof closeElectronApp>[0],
  projectPath: string,
) {
  await app.evaluate(({ ipcMain }, selectedPath) => {
    ipcMain.removeHandler('dialog:open');
    ipcMain.handle('dialog:open', async () => ({ canceled: false, filePaths: [selectedPath] }));
  }, projectPath);
  const page = await getStableWindow(app);
  await expect(page.getByTestId('ai-module-selection-page')).toBeVisible();
  await page.getByTestId('ai-module-option-programming').click();
  await expect(page.getByTestId('main-layout')).toBeVisible();
  return page;
}

test.describe('Coding project identity UX', () => {
  test('supports default create, bind validation, cancellation, legacy resolution, and independent copies', async ({ launchElectronApp }) => {
    const projectPath = await mkdtemp(path.join(tmpdir(), 'niancode-identity-e2e-'));
    const app = await launchElectronApp({ skipSetup: true });

    try {
      const page = await selectProgrammingProjectFolder(app, projectPath);
      await page.getByTestId('sidebar-create-project').click();
      const createDialog = page.getByRole('dialog', { name: '新建项目' });
      await expect(createDialog.getByRole('radio', { name: '创建新的项目 ID' })).toBeChecked();

      await createDialog.getByRole('radio', { name: '绑定已有项目 ID' }).click();
      await createDialog.getByRole('textbox', { name: '已有项目 ID' }).fill('not-a-project-id');
      await createDialog.getByRole('button', { name: '选择路径' }).click();
      await createDialog.getByRole('button', { name: '确认创建' }).click();
      await expect(createDialog).toContainText('请输入有效的项目 ID（小写 UUID）。');
      await createDialog.getByRole('button', { name: '取消' }).first().click();
      await expect(page.getByRole('dialog', { name: '新建项目' })).toHaveCount(0);

      await page.getByTestId('sidebar-create-project').click();
      const defaultCreateDialog = page.getByRole('dialog', { name: '新建项目' });
      await expect(defaultCreateDialog.getByRole('radio', { name: '创建新的项目 ID' })).toBeChecked();
      await defaultCreateDialog.getByRole('button', { name: '选择路径' }).click();
      await expect(defaultCreateDialog.getByLabel('项目路径')).toHaveValue(projectPath);
      await defaultCreateDialog.getByRole('button', { name: '确认创建' }).click();

      await expect(page.getByTestId('project-configuration-page')).toBeVisible();
      const createdConfig = await readProjectConfig(projectPath);
      const generatedProjectId = createdConfig.projectId;
      expect(generatedProjectId).toMatch(/^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/u);
      await expect(page.getByTestId('project-identity-value')).toHaveText(String(generatedProjectId));
      await expect(page.getByText('同一账号绑定相同项目 ID 会共享开发数据；项目 ID 不是凭据。')).toBeVisible();

      await writeFile(path.join(projectPath, 'identity-sentinel.txt'), 'keep this file in place');
      const independentButton = page.getByTestId('independent-copy-button');
      await independentButton.click();
      const independentDialog = page.getByRole('dialog', { name: '设为独立副本？' });
      await expect(independentDialog).toContainText('不会移动或复制文件');
      await expect(independentDialog).toContainText('不会复制云端开发数据');
      await independentDialog.getByRole('button', { name: '取消' }).click();
      await expect(independentDialog).toHaveCount(0);
      expect((await readProjectConfig(projectPath)).projectId).toBe(generatedProjectId);

      await independentButton.click();
      await page.getByRole('dialog', { name: '设为独立副本？' }).getByRole('button', { name: '确认设为独立副本' }).click();
      await expect(page.getByTestId('project-identity-value')).not.toHaveText(String(generatedProjectId));
      const independentConfig = await readProjectConfig(projectPath);
      expect(independentConfig.projectId).not.toBe(generatedProjectId);
      expect(await readFile(path.join(projectPath, 'identity-sentinel.txt'), 'utf8')).toBe('keep this file in place');

      const legacyConfig = await readProjectConfig(projectPath);
      delete legacyConfig.projectId;
      await writeFile(path.join(projectPath, '.niancode', 'project.json'), JSON.stringify(legacyConfig, null, 2));
      await page.reload();
      await expect(page.getByTestId('legacy-project-identity-card')).toBeVisible();

      const legacyCard = page.getByTestId('legacy-project-identity-card');
      await legacyCard.getByRole('radio', { name: '绑定已有项目 ID' }).click();
      await legacyCard.getByRole('textbox', { name: '已有项目 ID' }).fill(BOUND_PROJECT_ID);
      await legacyCard.getByTestId('resolve-project-identity-button').click();
      await expect(page.getByTestId('project-identity-value')).toHaveText(BOUND_PROJECT_ID);
      await expect(page.getByTestId('legacy-project-identity-card')).toHaveCount(0);
    } finally {
      await closeElectronApp(app);
      await rm(projectPath, { recursive: true, force: true });
    }
  });

  test('creates a project bound to an explicit canonical project ID', async ({ launchElectronApp }) => {
    const projectPath = await mkdtemp(path.join(tmpdir(), 'niancode-bound-identity-e2e-'));
    const app = await launchElectronApp({ skipSetup: true });

    try {
      const page = await selectProgrammingProjectFolder(app, projectPath);
      await page.getByTestId('sidebar-create-project').click();
      const createDialog = page.getByRole('dialog', { name: '新建项目' });
      await createDialog.getByRole('radio', { name: '绑定已有项目 ID' }).click();
      await expect(createDialog.getByText('同一账号绑定相同项目 ID 会共享开发数据；项目 ID 不是凭据。')).toBeVisible();
      await createDialog.getByRole('textbox', { name: '已有项目 ID' }).fill(BOUND_PROJECT_ID);
      await createDialog.getByRole('button', { name: '选择路径' }).click();
      await createDialog.getByRole('button', { name: '确认创建' }).click();

      await expect(page.getByTestId('project-configuration-page')).toBeVisible();
      await expect(page.getByTestId('project-identity-value')).toHaveText(BOUND_PROJECT_ID);
      expect((await readProjectConfig(projectPath)).projectId).toBe(BOUND_PROJECT_ID);
    } finally {
      await closeElectronApp(app);
      await rm(projectPath, { recursive: true, force: true });
    }
  });
});