import { vi } from 'vitest'
/**
 * Unit tests for MessageInput hotkeys scope management
 * Tests that hotkeys scope is properly saved and restored on component mount/unmount
 *
 * This test verifies the fix for Issue #126:
 * https://github.com/Mininglamp-OSS/octo-web/issues/126
 */

describe('MessageInput hotkeys scope management', () => {
    // Mock hotkeys-js behavior for testing scope management logic
    let currentScope = 'all';
    const scopeHistory: string[] = [];

    const mockHotkeys = {
        getScope: () => currentScope,
        setScope: (scope: string) => {
            scopeHistory.push(scope);
            currentScope = scope;
        },
        unbind: vi.fn(),
        filter: null as ((event: Event) => boolean) | null,
    };

    beforeEach(() => {
        currentScope = 'all';
        scopeHistory.length = 0;
        mockHotkeys.unbind.mockClear();
    });

    it('should save the previous scope before setting messageInput scope', () => {
        // Simulate componentDidMount behavior
        const previousScope = mockHotkeys.getScope(); // Should be 'all'
        const scope = 'messageInput';
        mockHotkeys.setScope(scope);

        expect(previousScope).toBe('all');
        expect(mockHotkeys.getScope()).toBe('messageInput');
    });

    it('should restore previous scope on unmount', () => {
        // Simulate full lifecycle
        const scope = 'messageInput';

        // Mount: save previous and set new scope
        const previousScope = mockHotkeys.getScope();
        mockHotkeys.setScope(scope);

        expect(mockHotkeys.getScope()).toBe('messageInput');

        // Unmount: restore previous scope
        mockHotkeys.setScope(previousScope);

        expect(mockHotkeys.getScope()).toBe('all');
    });

    it('should handle nested component scenarios correctly', () => {
        // First MessageInput mounts
        const previousScope1 = mockHotkeys.getScope(); // 'all'
        mockHotkeys.setScope('messageInput');

        // Second MessageInput mounts (nested or sibling)
        const previousScope2 = mockHotkeys.getScope(); // 'messageInput'
        mockHotkeys.setScope('messageInput');

        // Second MessageInput unmounts - restores to 'messageInput'
        mockHotkeys.setScope(previousScope2);
        expect(mockHotkeys.getScope()).toBe('messageInput');

        // First MessageInput unmounts - restores to 'all'
        mockHotkeys.setScope(previousScope1);
        expect(mockHotkeys.getScope()).toBe('all');
    });

    it('should preserve custom scope when component is mounted in custom scope context', () => {
        // Some other component sets a custom scope
        mockHotkeys.setScope('customScope');

        // MessageInput mounts - should save 'customScope'
        const previousScope = mockHotkeys.getScope();
        mockHotkeys.setScope('messageInput');

        expect(previousScope).toBe('customScope');

        // MessageInput unmounts - should restore 'customScope'
        mockHotkeys.setScope(previousScope);

        expect(mockHotkeys.getScope()).toBe('customScope');
    });

    it('should track scope changes correctly', () => {
        // Initial state
        expect(scopeHistory).toEqual([]);

        // Mount
        const previousScope = mockHotkeys.getScope();
        mockHotkeys.setScope('messageInput');

        // Unmount
        mockHotkeys.setScope(previousScope);

        expect(scopeHistory).toEqual(['messageInput', 'all']);
    });
});
