/**
 * @license
 * Copyright 2025 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import { describe, it, expect, vi } from 'vitest';
import { cleanupExpiredSessions } from './sessionCleanup.js';
import { SESSION_FILE_PREFIX } from 'sixth-cli-core';
// Create a mock config for integration testing
function createTestConfig() {
    return {
        storage: {
            getProjectTempDir: () => '/tmp/nonexistent-test-dir',
        },
        getSessionId: () => 'test-session-id',
        getDebugMode: () => false,
        initialize: async () => undefined,
    };
}
describe('Session Cleanup Integration', () => {
    it('should gracefully handle non-existent directories', async () => {
        const config = createTestConfig();
        const settings = {
            general: {
                sessionRetention: {
                    enabled: true,
                    maxAge: '30d',
                },
            },
        };
        const result = await cleanupExpiredSessions(config, settings);
        // Should return empty result for non-existent directory
        expect(result.disabled).toBe(false);
        expect(result.scanned).toBe(0);
        expect(result.deleted).toBe(0);
        expect(result.skipped).toBe(0);
        expect(result.failed).toBe(0);
    });
    it('should not impact startup when disabled', async () => {
        const config = createTestConfig();
        const settings = {
            general: {
                sessionRetention: {
                    enabled: false,
                },
            },
        };
        const result = await cleanupExpiredSessions(config, settings);
        expect(result.disabled).toBe(true);
        expect(result.scanned).toBe(0);
        expect(result.deleted).toBe(0);
        expect(result.skipped).toBe(0);
        expect(result.failed).toBe(0);
    });
    it('should handle missing sessionRetention configuration', async () => {
        // Create test session files to verify they are NOT deleted when config is missing
        const fs = await import('node:fs/promises');
        const path = await import('node:path');
        const os = await import('node:os');
        const tempDir = await fs.mkdtemp(path.join(os.tmpdir(), 'gemini-test-'));
        const chatsDir = path.join(tempDir, 'chats');
        await fs.mkdir(chatsDir, { recursive: true });
        // Create an old session file that would normally be deleted
        const oldDate = new Date(Date.now() - 60 * 24 * 60 * 60 * 1000); // 60 days ago
        const sessionFile = path.join(chatsDir, `${SESSION_FILE_PREFIX}2024-01-01T10-00-00-test123.json`);
        await fs.writeFile(sessionFile, JSON.stringify({
            sessionId: 'test123',
            messages: [],
            startTime: oldDate.toISOString(),
            lastUpdated: oldDate.toISOString(),
        }));
        const config = createTestConfig();
        config.storage.getProjectTempDir = vi.fn().mockReturnValue(tempDir);
        const settings = {};
        const result = await cleanupExpiredSessions(config, settings);
        expect(result.disabled).toBe(true);
        expect(result.scanned).toBe(0); // Should not even scan when config is missing
        expect(result.deleted).toBe(0);
        expect(result.skipped).toBe(0);
        expect(result.failed).toBe(0);
        // Verify the session file still exists (was not deleted)
        const filesAfter = await fs.readdir(chatsDir);
        expect(filesAfter).toContain(`${SESSION_FILE_PREFIX}2024-01-01T10-00-00-test123.json`);
        // Cleanup
        await fs.rm(tempDir, { recursive: true });
    });
    it('should validate configuration and fail gracefully', async () => {
        const errorSpy = vi.spyOn(console, 'error').mockImplementation(() => { });
        const config = createTestConfig();
        const settings = {
            general: {
                sessionRetention: {
                    enabled: true,
                    maxAge: 'invalid-format',
                },
            },
        };
        const result = await cleanupExpiredSessions(config, settings);
        expect(result.disabled).toBe(true);
        expect(result.scanned).toBe(0);
        expect(result.deleted).toBe(0);
        expect(result.skipped).toBe(0);
        expect(result.failed).toBe(0);
        // Verify error logging provides visibility into the validation failure
        expect(errorSpy).toHaveBeenCalledWith(expect.stringContaining('Session cleanup disabled: Error: Invalid retention period format'));
        errorSpy.mockRestore();
    });
    it('should clean up expired sessions when they exist', async () => {
        // Create a temporary directory with test sessions
        const fs = await import('node:fs/promises');
        const path = await import('node:path');
        const os = await import('node:os');
        const tempDir = await fs.mkdtemp(path.join(os.tmpdir(), 'gemini-test-'));
        const chatsDir = path.join(tempDir, 'chats');
        await fs.mkdir(chatsDir, { recursive: true });
        // Create test session files with different ages
        const now = new Date();
        const oldDate = new Date(now.getTime() - 35 * 24 * 60 * 60 * 1000); // 35 days ago
        const recentDate = new Date(now.getTime() - 5 * 24 * 60 * 60 * 1000); // 5 days ago
        // Create an old session file that should be deleted
        const oldSessionFile = path.join(chatsDir, `${SESSION_FILE_PREFIX}2024-12-01T10-00-00-old12345.json`);
        await fs.writeFile(oldSessionFile, JSON.stringify({
            sessionId: 'old12345',
            messages: [],
            startTime: oldDate.toISOString(),
            lastUpdated: oldDate.toISOString(),
        }));
        // Create a recent session file that should be kept
        const recentSessionFile = path.join(chatsDir, `${SESSION_FILE_PREFIX}2025-01-15T10-00-00-recent789.json`);
        await fs.writeFile(recentSessionFile, JSON.stringify({
            sessionId: 'recent789',
            messages: [],
            startTime: recentDate.toISOString(),
            lastUpdated: recentDate.toISOString(),
        }));
        // Create a current session file that should always be kept
        const currentSessionFile = path.join(chatsDir, `${SESSION_FILE_PREFIX}2025-01-20T10-00-00-current123.json`);
        await fs.writeFile(currentSessionFile, JSON.stringify({
            sessionId: 'current123',
            messages: [],
            startTime: now.toISOString(),
            lastUpdated: now.toISOString(),
        }));
        // Configure test with real temp directory
        const config = {
            storage: {
                getProjectTempDir: () => tempDir,
            },
            getSessionId: () => 'current123',
            getDebugMode: () => false,
            initialize: async () => undefined,
        };
        const settings = {
            general: {
                sessionRetention: {
                    enabled: true,
                    maxAge: '30d', // Keep sessions for 30 days
                },
            },
        };
        try {
            const result = await cleanupExpiredSessions(config, settings);
            // Verify the result
            expect(result.disabled).toBe(false);
            expect(result.scanned).toBe(3); // Should scan all 3 sessions
            expect(result.deleted).toBe(1); // Should delete the old session (35 days old)
            expect(result.skipped).toBe(2); // Should keep recent and current sessions
            expect(result.failed).toBe(0);
            // Verify files on disk
            const remainingFiles = await fs.readdir(chatsDir);
            expect(remainingFiles).toHaveLength(2); // Only 2 files should remain
            expect(remainingFiles).toContain(`${SESSION_FILE_PREFIX}2025-01-15T10-00-00-recent789.json`);
            expect(remainingFiles).toContain(`${SESSION_FILE_PREFIX}2025-01-20T10-00-00-current123.json`);
            expect(remainingFiles).not.toContain(`${SESSION_FILE_PREFIX}2024-12-01T10-00-00-old12345.json`);
        }
        finally {
            // Clean up test directory
            await fs.rm(tempDir, { recursive: true, force: true });
        }
    });
});
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