/**
 * @license
 * Copyright 2025 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import { vi, describe, it, expect, beforeEach, afterEach } from 'vitest';
import { getInstallationInfo, PackageManager } from './installationInfo.js';
import * as fs from 'node:fs';
import * as path from 'node:path';
import * as childProcess from 'node:child_process';
import { isGitRepository, debugLogger } from '@google/gemini-cli-core';
vi.mock('@google/gemini-cli-core', async (importOriginal) => {
    const actual = await importOriginal();
    return {
        ...actual,
        isGitRepository: vi.fn(),
    };
});
vi.mock('fs', async (importOriginal) => {
    const actualFs = await importOriginal();
    return {
        ...actualFs,
        realpathSync: vi.fn(),
        existsSync: vi.fn(),
    };
});
vi.mock('child_process', async (importOriginal) => {
    const actual = await importOriginal();
    return {
        ...actual,
        execSync: vi.fn(),
    };
});
const mockedIsGitRepository = vi.mocked(isGitRepository);
const mockedRealPathSync = vi.mocked(fs.realpathSync);
const mockedExistsSync = vi.mocked(fs.existsSync);
const mockedExecSync = vi.mocked(childProcess.execSync);
describe('getInstallationInfo', () => {
    const projectRoot = '/path/to/project';
    let originalArgv;
    beforeEach(() => {
        vi.resetAllMocks();
        originalArgv = [...process.argv];
        // Mock process.cwd() for isGitRepository
        vi.spyOn(process, 'cwd').mockReturnValue(projectRoot);
        vi.spyOn(debugLogger, 'log').mockImplementation(() => { });
    });
    afterEach(() => {
        process.argv = originalArgv;
    });
    it('should return UNKNOWN when cliPath is not available', () => {
        process.argv[1] = '';
        const info = getInstallationInfo(projectRoot, true);
        expect(info.packageManager).toBe(PackageManager.UNKNOWN);
    });
    it('should return UNKNOWN and log error if realpathSync fails', () => {
        process.argv[1] = '/path/to/cli';
        const error = new Error('realpath failed');
        mockedRealPathSync.mockImplementation(() => {
            throw error;
        });
        const info = getInstallationInfo(projectRoot, true);
        expect(info.packageManager).toBe(PackageManager.UNKNOWN);
        expect(debugLogger.log).toHaveBeenCalledWith(error);
    });
    it('should detect running from a local git clone', () => {
        process.argv[1] = `${projectRoot}/packages/cli/dist/index.js`;
        mockedRealPathSync.mockReturnValue(`${projectRoot}/packages/cli/dist/index.js`);
        mockedIsGitRepository.mockReturnValue(true);
        const info = getInstallationInfo(projectRoot, true);
        expect(info.packageManager).toBe(PackageManager.UNKNOWN);
        expect(info.isGlobal).toBe(false);
        expect(info.updateMessage).toBe('Running from a local git clone. Please update with "git pull".');
    });
    it('should detect running via npx', () => {
        const npxPath = `/Users/test/.npm/_npx/12345/bin/gemini`;
        process.argv[1] = npxPath;
        mockedRealPathSync.mockReturnValue(npxPath);
        const info = getInstallationInfo(projectRoot, true);
        expect(info.packageManager).toBe(PackageManager.NPX);
        expect(info.isGlobal).toBe(false);
        expect(info.updateMessage).toBe('Running via npx, update not applicable.');
    });
    it('should detect running via pnpx', () => {
        const pnpxPath = `/Users/test/.pnpm/_pnpx/12345/bin/gemini`;
        process.argv[1] = pnpxPath;
        mockedRealPathSync.mockReturnValue(pnpxPath);
        const info = getInstallationInfo(projectRoot, true);
        expect(info.packageManager).toBe(PackageManager.PNPX);
        expect(info.isGlobal).toBe(false);
        expect(info.updateMessage).toBe('Running via pnpx, update not applicable.');
    });
    it('should detect running via bunx', () => {
        const bunxPath = `/Users/test/.bun/install/cache/12345/bin/gemini`;
        process.argv[1] = bunxPath;
        mockedRealPathSync.mockReturnValue(bunxPath);
        mockedExecSync.mockImplementation(() => {
            throw new Error('Command failed');
        });
        const info = getInstallationInfo(projectRoot, true);
        expect(info.packageManager).toBe(PackageManager.BUNX);
        expect(info.isGlobal).toBe(false);
        expect(info.updateMessage).toBe('Running via bunx, update not applicable.');
    });
    it('should detect Homebrew installation via execSync', () => {
        Object.defineProperty(process, 'platform', {
            value: 'darwin',
        });
        // Use a path that matches what brew would resolve to
        const cliPath = '/opt/homebrew/Cellar/gemini-cli/1.0.0/bin/gemini';
        process.argv[1] = cliPath;
        mockedExecSync.mockImplementation((cmd) => {
            if (typeof cmd === 'string' && cmd.includes('brew --prefix gemini-cli')) {
                return '/opt/homebrew/opt/gemini-cli';
            }
            throw new Error(`Command failed: ${cmd}`);
        });
        mockedRealPathSync.mockImplementation((p) => {
            if (p === cliPath)
                return cliPath;
            if (p === '/opt/homebrew/opt/gemini-cli') {
                return '/opt/homebrew/Cellar/gemini-cli/1.0.0';
            }
            return String(p);
        });
        const info = getInstallationInfo(projectRoot, true);
        expect(mockedExecSync).toHaveBeenCalledWith(expect.stringContaining('brew --prefix gemini-cli'), expect.anything());
        expect(info.packageManager).toBe(PackageManager.HOMEBREW);
        expect(info.isGlobal).toBe(true);
        expect(info.updateMessage).toBe('Installed via Homebrew. Please update with "brew upgrade gemini-cli".');
    });
    it('should fall through if brew command fails', () => {
        Object.defineProperty(process, 'platform', {
            value: 'darwin',
        });
        const cliPath = '/usr/local/bin/gemini';
        process.argv[1] = cliPath;
        mockedRealPathSync.mockReturnValue(cliPath);
        mockedExecSync.mockImplementation(() => {
            throw new Error('Command failed');
        });
        const info = getInstallationInfo(projectRoot, true);
        expect(mockedExecSync).toHaveBeenCalledWith(expect.stringContaining('brew --prefix gemini-cli'), expect.anything());
        // Should fall back to default global npm
        expect(info.packageManager).toBe(PackageManager.NPM);
        expect(info.isGlobal).toBe(true);
    });
    it('should detect global pnpm installation', () => {
        const pnpmPath = `/Users/test/.pnpm/global/5/node_modules/.pnpm/some-hash/node_modules/@google/gemini-cli/dist/index.js`;
        process.argv[1] = pnpmPath;
        mockedRealPathSync.mockReturnValue(pnpmPath);
        mockedExecSync.mockImplementation(() => {
            throw new Error('Command failed');
        });
        // isAutoUpdateEnabled = true -> "Attempting to automatically update"
        const info = getInstallationInfo(projectRoot, true);
        expect(info.packageManager).toBe(PackageManager.PNPM);
        expect(info.isGlobal).toBe(true);
        expect(info.updateCommand).toBe('pnpm add -g @google/gemini-cli@latest');
        expect(info.updateMessage).toContain('Attempting to automatically update');
        // isAutoUpdateEnabled = false -> "Please run..."
        const infoDisabled = getInstallationInfo(projectRoot, false);
        expect(infoDisabled.updateMessage).toContain('Please run pnpm add');
    });
    it('should detect global yarn installation', () => {
        const yarnPath = `/Users/test/.yarn/global/node_modules/@google/gemini-cli/dist/index.js`;
        process.argv[1] = yarnPath;
        mockedRealPathSync.mockReturnValue(yarnPath);
        mockedExecSync.mockImplementation(() => {
            throw new Error('Command failed');
        });
        // isAutoUpdateEnabled = true -> "Attempting to automatically update"
        const info = getInstallationInfo(projectRoot, true);
        expect(info.packageManager).toBe(PackageManager.YARN);
        expect(info.isGlobal).toBe(true);
        expect(info.updateCommand).toBe('yarn global add @google/gemini-cli@latest');
        expect(info.updateMessage).toContain('Attempting to automatically update');
        // isAutoUpdateEnabled = false -> "Please run..."
        const infoDisabled = getInstallationInfo(projectRoot, false);
        expect(infoDisabled.updateMessage).toContain('Please run yarn global add');
    });
    it('should detect global bun installation', () => {
        const bunPath = `/Users/test/.bun/bin/gemini`;
        process.argv[1] = bunPath;
        mockedRealPathSync.mockReturnValue(bunPath);
        mockedExecSync.mockImplementation(() => {
            throw new Error('Command failed');
        });
        // isAutoUpdateEnabled = true -> "Attempting to automatically update"
        const info = getInstallationInfo(projectRoot, true);
        expect(info.packageManager).toBe(PackageManager.BUN);
        expect(info.isGlobal).toBe(true);
        expect(info.updateCommand).toBe('bun add -g @google/gemini-cli@latest');
        expect(info.updateMessage).toContain('Attempting to automatically update');
        // isAutoUpdateEnabled = false -> "Please run..."
        const infoDisabled = getInstallationInfo(projectRoot, false);
        expect(infoDisabled.updateMessage).toContain('Please run bun add');
    });
    it('should detect local installation and identify yarn from lockfile', () => {
        const localPath = `${projectRoot}/node_modules/.bin/gemini`;
        process.argv[1] = localPath;
        mockedRealPathSync.mockReturnValue(localPath);
        mockedExecSync.mockImplementation(() => {
            throw new Error('Command failed');
        });
        mockedExistsSync.mockImplementation((p) => p === path.join(projectRoot, 'yarn.lock'));
        const info = getInstallationInfo(projectRoot, true);
        expect(info.packageManager).toBe(PackageManager.YARN);
        expect(info.isGlobal).toBe(false);
        expect(info.updateMessage).toContain('Locally installed');
    });
    it('should detect local installation and identify pnpm from lockfile', () => {
        const localPath = `${projectRoot}/node_modules/.bin/gemini`;
        process.argv[1] = localPath;
        mockedRealPathSync.mockReturnValue(localPath);
        mockedExecSync.mockImplementation(() => {
            throw new Error('Command failed');
        });
        mockedExistsSync.mockImplementation((p) => p === path.join(projectRoot, 'pnpm-lock.yaml'));
        const info = getInstallationInfo(projectRoot, true);
        expect(info.packageManager).toBe(PackageManager.PNPM);
        expect(info.isGlobal).toBe(false);
    });
    it('should detect local installation and identify bun from lockfile', () => {
        const localPath = `${projectRoot}/node_modules/.bin/gemini`;
        process.argv[1] = localPath;
        mockedRealPathSync.mockReturnValue(localPath);
        mockedExecSync.mockImplementation(() => {
            throw new Error('Command failed');
        });
        mockedExistsSync.mockImplementation((p) => p === path.join(projectRoot, 'bun.lockb'));
        const info = getInstallationInfo(projectRoot, true);
        expect(info.packageManager).toBe(PackageManager.BUN);
        expect(info.isGlobal).toBe(false);
    });
    it('should default to local npm installation if no lockfile is found', () => {
        const localPath = `${projectRoot}/node_modules/.bin/gemini`;
        process.argv[1] = localPath;
        mockedRealPathSync.mockReturnValue(localPath);
        mockedExecSync.mockImplementation(() => {
            throw new Error('Command failed');
        });
        mockedExistsSync.mockReturnValue(false); // No lockfiles
        const info = getInstallationInfo(projectRoot, true);
        expect(info.packageManager).toBe(PackageManager.NPM);
        expect(info.isGlobal).toBe(false);
    });
    it('should default to global npm installation for unrecognized paths', () => {
        const globalPath = `/usr/local/bin/gemini`;
        process.argv[1] = globalPath;
        mockedRealPathSync.mockReturnValue(globalPath);
        mockedExecSync.mockImplementation(() => {
            throw new Error('Command failed');
        });
        // isAutoUpdateEnabled = true -> "Attempting to automatically update"
        const info = getInstallationInfo(projectRoot, true);
        expect(info.packageManager).toBe(PackageManager.NPM);
        expect(info.isGlobal).toBe(true);
        expect(info.updateCommand).toBe('npm install -g @google/gemini-cli@latest');
        expect(info.updateMessage).toContain('Attempting to automatically update');
        // isAutoUpdateEnabled = false -> "Please run..."
        const infoDisabled = getInstallationInfo(projectRoot, false);
        expect(infoDisabled.updateMessage).toContain('Please run npm install');
    });
    it('should NOT detect Homebrew if gemini-cli is installed in brew but running from npm location', () => {
        Object.defineProperty(process, 'platform', {
            value: 'darwin',
        });
        // Path looks like standard global NPM
        const cliPath = '/usr/local/lib/node_modules/@google/gemini-cli/dist/index.js';
        process.argv[1] = cliPath;
        // Setup mocks
        mockedExecSync.mockImplementation((cmd) => {
            if (typeof cmd === 'string' && cmd.includes('brew list')) {
                return Buffer.from('gemini-cli\n');
            }
            // Future proofing for the fix:
            if (typeof cmd === 'string' && cmd.includes('brew --prefix gemini-cli')) {
                return '/opt/homebrew/opt/gemini-cli';
            }
            throw new Error(`Command failed: ${cmd}`);
        });
        mockedRealPathSync.mockImplementation((p) => {
            if (p === cliPath)
                return cliPath;
            // Future proofing for the fix:
            if (p === '/opt/homebrew/opt/gemini-cli')
                return '/opt/homebrew/Cellar/gemini-cli/1.0.0';
            return String(p);
        });
        const info = getInstallationInfo(projectRoot, false);
        expect(info.packageManager).not.toBe(PackageManager.HOMEBREW);
        expect(info.packageManager).toBe(PackageManager.NPM);
    });
});
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