import { jsx as _jsx } from "react/jsx-runtime";
/**
 * @license
 * Copyright 2025 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
import { act } from 'react';
import { render } from '../../test-utils/render.js';
import { waitFor } from '../../test-utils/async.js';
import { useMessageQueue } from './useMessageQueue.js';
import { StreamingState } from '../types.js';
describe('useMessageQueue', () => {
    let mockSubmitQuery;
    beforeEach(() => {
        mockSubmitQuery = vi.fn();
        vi.useFakeTimers();
    });
    afterEach(() => {
        vi.useRealTimers();
        vi.clearAllMocks();
    });
    const renderMessageQueueHook = (initialProps) => {
        let hookResult;
        function TestComponent(props) {
            hookResult = useMessageQueue(props);
            return null;
        }
        const { rerender } = render(_jsx(TestComponent, { ...initialProps }));
        return {
            result: {
                get current() {
                    return hookResult;
                },
            },
            rerender: (newProps) => rerender(_jsx(TestComponent, { ...initialProps, ...newProps })),
        };
    };
    it('should initialize with empty queue', () => {
        const { result } = renderMessageQueueHook({
            isConfigInitialized: true,
            streamingState: StreamingState.Idle,
            submitQuery: mockSubmitQuery,
        });
        expect(result.current.messageQueue).toEqual([]);
        expect(result.current.getQueuedMessagesText()).toBe('');
    });
    it('should add messages to queue', () => {
        const { result } = renderMessageQueueHook({
            isConfigInitialized: true,
            streamingState: StreamingState.Responding,
            submitQuery: mockSubmitQuery,
        });
        act(() => {
            result.current.addMessage('Test message 1');
            result.current.addMessage('Test message 2');
        });
        expect(result.current.messageQueue).toEqual([
            'Test message 1',
            'Test message 2',
        ]);
    });
    it('should filter out empty messages', () => {
        const { result } = renderMessageQueueHook({
            isConfigInitialized: true,
            streamingState: StreamingState.Responding,
            submitQuery: mockSubmitQuery,
        });
        act(() => {
            result.current.addMessage('Valid message');
            result.current.addMessage('   '); // Only whitespace
            result.current.addMessage(''); // Empty
            result.current.addMessage('Another valid message');
        });
        expect(result.current.messageQueue).toEqual([
            'Valid message',
            'Another valid message',
        ]);
    });
    it('should clear queue', () => {
        const { result } = renderMessageQueueHook({
            isConfigInitialized: true,
            streamingState: StreamingState.Responding,
            submitQuery: mockSubmitQuery,
        });
        act(() => {
            result.current.addMessage('Test message');
        });
        expect(result.current.messageQueue).toEqual(['Test message']);
        act(() => {
            result.current.clearQueue();
        });
        expect(result.current.messageQueue).toEqual([]);
    });
    it('should return queued messages as text with double newlines', () => {
        const { result } = renderMessageQueueHook({
            isConfigInitialized: true,
            streamingState: StreamingState.Responding,
            submitQuery: mockSubmitQuery,
        });
        act(() => {
            result.current.addMessage('Message 1');
            result.current.addMessage('Message 2');
            result.current.addMessage('Message 3');
        });
        expect(result.current.getQueuedMessagesText()).toBe('Message 1\n\nMessage 2\n\nMessage 3');
    });
    it('should auto-submit queued messages when transitioning to Idle', async () => {
        const { result, rerender } = renderMessageQueueHook({
            isConfigInitialized: true,
            streamingState: StreamingState.Responding,
            submitQuery: mockSubmitQuery,
        });
        // Add some messages
        act(() => {
            result.current.addMessage('Message 1');
            result.current.addMessage('Message 2');
        });
        expect(result.current.messageQueue).toEqual(['Message 1', 'Message 2']);
        // Transition to Idle
        rerender({ streamingState: StreamingState.Idle });
        await waitFor(() => {
            expect(mockSubmitQuery).toHaveBeenCalledWith('Message 1\n\nMessage 2');
            expect(result.current.messageQueue).toEqual([]);
        });
    });
    it('should not auto-submit when queue is empty', () => {
        const { rerender } = renderMessageQueueHook({
            isConfigInitialized: true,
            streamingState: StreamingState.Responding,
            submitQuery: mockSubmitQuery,
        });
        // Transition to Idle with empty queue
        rerender({ streamingState: StreamingState.Idle });
        expect(mockSubmitQuery).not.toHaveBeenCalled();
    });
    it('should not auto-submit when not transitioning to Idle', () => {
        const { result, rerender } = renderMessageQueueHook({
            isConfigInitialized: true,
            streamingState: StreamingState.Responding,
            submitQuery: mockSubmitQuery,
        });
        // Add messages
        act(() => {
            result.current.addMessage('Message 1');
        });
        // Transition to WaitingForConfirmation (not Idle)
        rerender({ streamingState: StreamingState.WaitingForConfirmation });
        expect(mockSubmitQuery).not.toHaveBeenCalled();
        expect(result.current.messageQueue).toEqual(['Message 1']);
    });
    it('should handle multiple state transitions correctly', async () => {
        const { result, rerender } = renderMessageQueueHook({
            isConfigInitialized: true,
            streamingState: StreamingState.Idle,
            submitQuery: mockSubmitQuery,
        });
        // Start responding
        rerender({ streamingState: StreamingState.Responding });
        // Add messages while responding
        act(() => {
            result.current.addMessage('First batch');
        });
        // Go back to idle - should submit
        rerender({ streamingState: StreamingState.Idle });
        await waitFor(() => {
            expect(mockSubmitQuery).toHaveBeenCalledWith('First batch');
            expect(result.current.messageQueue).toEqual([]);
        });
        // Start responding again
        rerender({ streamingState: StreamingState.Responding });
        // Add more messages
        act(() => {
            result.current.addMessage('Second batch');
        });
        // Go back to idle - should submit again
        rerender({ streamingState: StreamingState.Idle });
        await waitFor(() => {
            expect(mockSubmitQuery).toHaveBeenCalledWith('Second batch');
            expect(mockSubmitQuery).toHaveBeenCalledTimes(2);
        });
    });
    describe('popAllMessages', () => {
        it('should pop all messages and return them joined with double newlines', () => {
            const { result } = renderMessageQueueHook({
                isConfigInitialized: true,
                streamingState: StreamingState.Responding,
                submitQuery: mockSubmitQuery,
            });
            // Add multiple messages
            act(() => {
                result.current.addMessage('Message 1');
                result.current.addMessage('Message 2');
                result.current.addMessage('Message 3');
            });
            expect(result.current.messageQueue).toEqual([
                'Message 1',
                'Message 2',
                'Message 3',
            ]);
            // Pop all messages
            let poppedMessages;
            act(() => {
                poppedMessages = result.current.popAllMessages();
            });
            expect(poppedMessages).toBe('Message 1\n\nMessage 2\n\nMessage 3');
            expect(result.current.messageQueue).toEqual([]);
        });
        it('should return undefined when queue is empty', () => {
            const { result } = renderMessageQueueHook({
                isConfigInitialized: true,
                streamingState: StreamingState.Responding,
                submitQuery: mockSubmitQuery,
            });
            let poppedMessages = 'not-undefined';
            act(() => {
                poppedMessages = result.current.popAllMessages();
            });
            expect(poppedMessages).toBeUndefined();
            expect(result.current.messageQueue).toEqual([]);
        });
        it('should handle single message correctly', () => {
            const { result } = renderMessageQueueHook({
                isConfigInitialized: true,
                streamingState: StreamingState.Responding,
                submitQuery: mockSubmitQuery,
            });
            act(() => {
                result.current.addMessage('Single message');
            });
            let poppedMessages;
            act(() => {
                poppedMessages = result.current.popAllMessages();
            });
            expect(poppedMessages).toBe('Single message');
            expect(result.current.messageQueue).toEqual([]);
        });
        it('should clear the entire queue after popping', () => {
            const { result } = renderMessageQueueHook({
                isConfigInitialized: true,
                streamingState: StreamingState.Responding,
                submitQuery: mockSubmitQuery,
            });
            act(() => {
                result.current.addMessage('Message 1');
                result.current.addMessage('Message 2');
            });
            act(() => {
                result.current.popAllMessages();
            });
            // Queue should be empty
            expect(result.current.messageQueue).toEqual([]);
            expect(result.current.getQueuedMessagesText()).toBe('');
            // Popping again should return undefined
            let secondPop = 'not-undefined';
            act(() => {
                secondPop = result.current.popAllMessages();
            });
            expect(secondPop).toBeUndefined();
        });
        it('should work correctly with state updates', () => {
            const { result } = renderMessageQueueHook({
                isConfigInitialized: true,
                streamingState: StreamingState.Responding,
                submitQuery: mockSubmitQuery,
            });
            // Add messages
            act(() => {
                result.current.addMessage('First');
                result.current.addMessage('Second');
            });
            // Pop all messages
            let firstPop;
            act(() => {
                firstPop = result.current.popAllMessages();
            });
            expect(firstPop).toBe('First\n\nSecond');
            // Add new messages after popping
            act(() => {
                result.current.addMessage('Third');
                result.current.addMessage('Fourth');
            });
            // Pop again
            let secondPop;
            act(() => {
                secondPop = result.current.popAllMessages();
            });
            expect(secondPop).toBe('Third\n\nFourth');
            expect(result.current.messageQueue).toEqual([]);
        });
    });
});
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