/**
 * @license
 * Copyright 2025 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import { CompressionStatus, } from 'sixth-cli-core';
import { vi, describe, it, expect, beforeEach } from 'vitest';
import { compressCommand } from './compressCommand.js';
import { createMockCommandContext } from '../../test-utils/mockCommandContext.js';
import { MessageType } from '../types.js';
describe('compressCommand', () => {
    let context;
    let mockTryCompressChat;
    beforeEach(() => {
        mockTryCompressChat = vi.fn();
        context = createMockCommandContext({
            services: {
                config: {
                    getGeminiClient: () => ({
                        tryCompressChat: mockTryCompressChat,
                    }),
                },
            },
        });
    });
    it('should do nothing if a compression is already pending', async () => {
        context.ui.pendingItem = {
            type: MessageType.COMPRESSION,
            compression: {
                isPending: true,
                originalTokenCount: null,
                newTokenCount: null,
                compressionStatus: null,
            },
        };
        await compressCommand.action(context, '');
        expect(context.ui.addItem).toHaveBeenCalledWith(expect.objectContaining({
            type: MessageType.ERROR,
            text: 'Already compressing, wait for previous request to complete',
        }), expect.any(Number));
        expect(context.ui.setPendingItem).not.toHaveBeenCalled();
        expect(mockTryCompressChat).not.toHaveBeenCalled();
    });
    it('should set pending item, call tryCompressChat, and add result on success', async () => {
        const compressedResult = {
            originalTokenCount: 200,
            compressionStatus: CompressionStatus.COMPRESSED,
            newTokenCount: 100,
        };
        mockTryCompressChat.mockResolvedValue(compressedResult);
        await compressCommand.action(context, '');
        expect(context.ui.setPendingItem).toHaveBeenNthCalledWith(1, {
            type: MessageType.COMPRESSION,
            compression: {
                isPending: true,
                compressionStatus: null,
                originalTokenCount: null,
                newTokenCount: null,
            },
        });
        expect(mockTryCompressChat).toHaveBeenCalledWith(expect.stringMatching(/^compress-\d+$/), true);
        expect(context.ui.addItem).toHaveBeenCalledWith({
            type: MessageType.COMPRESSION,
            compression: {
                isPending: false,
                compressionStatus: CompressionStatus.COMPRESSED,
                originalTokenCount: 200,
                newTokenCount: 100,
            },
        }, expect.any(Number));
        expect(context.ui.setPendingItem).toHaveBeenNthCalledWith(2, null);
    });
    it('should add an error message if tryCompressChat returns falsy', async () => {
        mockTryCompressChat.mockResolvedValue(null);
        await compressCommand.action(context, '');
        expect(context.ui.addItem).toHaveBeenCalledWith(expect.objectContaining({
            type: MessageType.ERROR,
            text: 'Failed to compress chat history.',
        }), expect.any(Number));
        expect(context.ui.setPendingItem).toHaveBeenCalledWith(null);
    });
    it('should add an error message if tryCompressChat throws', async () => {
        const error = new Error('Compression failed');
        mockTryCompressChat.mockRejectedValue(error);
        await compressCommand.action(context, '');
        expect(context.ui.addItem).toHaveBeenCalledWith(expect.objectContaining({
            type: MessageType.ERROR,
            text: `Failed to compress chat history: ${error.message}`,
        }), expect.any(Number));
        expect(context.ui.setPendingItem).toHaveBeenCalledWith(null);
    });
    it('should clear the pending item in a finally block', async () => {
        mockTryCompressChat.mockRejectedValue(new Error('some error'));
        await compressCommand.action(context, '');
        expect(context.ui.setPendingItem).toHaveBeenCalledWith(null);
    });
});
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