#!/usr/bin/env node

/**
 * TDD Test for SectionManager Component Extraction
 *
 * Tests the extraction of SectionManager from the monolithic editor.js
 * Ensures all functionality is preserved during refactoring.
 */

const RefactorTestRunner = require('./refactor-test-runner.js');

const runner = new RefactorTestRunner();

// First, let's define what the SectionManager API should look like
const EXPECTED_SECTION_MANAGER_API = [
    'constructor',
    'createSectionsFromMarkdown',
    'startEditing',
    'stopEditing',
    'getAllSections',
    'sections', // Map property, not method
    'getDocumentStatus',
    'getDocumentMarkdown',
    'on', // event system
    'emit', // event system
    'handleSectionSplit',
    'updateContent',
    'acceptChanges',
    'cancelChanges',
    'resetSection'
];

runner.describe('SectionManager Component Extraction', () => {

    runner.it('should define expected API methods', () => {
        // This test defines what we expect from the extracted SectionManager
        const expectedMethods = EXPECTED_SECTION_MANAGER_API;
        runner.expect(expectedMethods.length).toBe(15);
        runner.expect(expectedMethods).toContain('createSectionsFromMarkdown');
        runner.expect(expectedMethods).toContain('startEditing');
        runner.expect(expectedMethods).toContain('stopEditing');
    });

    runner.it('should extract from monolithic editor.js', () => {
        // Load the monolithic editor.js to extract SectionManager
        delete require.cache[require.resolve('/home/worsch/markitect_project/markitect/static/editor.js')];

        try {
            const editorModule = require('/home/worsch/markitect_project/markitect/static/editor.js');
            runner.expect(editorModule.SectionManager).toBeTruthy();
            // Set global for other tests
            global.SectionManager = editorModule.SectionManager;
            global.Section = editorModule.Section;
            global.EditState = editorModule.EditState;
        } catch (error) {
            throw new Error(`Failed to load monolithic editor.js: ${error.message}`);
        }
    });

    runner.it('should preserve SectionManager constructor functionality', () => {
        const SectionManager = global.SectionManager;

        const manager = new SectionManager();
        runner.expect(manager).toBeInstanceOf(SectionManager);
        runner.expect(manager.sections).toBeInstanceOf(Map);
    });

    runner.it('should preserve createSectionsFromMarkdown functionality', () => {
        const SectionManager = global.SectionManager;
        const manager = new SectionManager();

        const testMarkdown = `# Heading 1\nContent 1\n\n## Heading 2\nContent 2`;
        const sections = manager.createSectionsFromMarkdown(testMarkdown);

        runner.expect(Array.isArray(sections)).toBeTruthy();
        runner.expect(sections.length).toBe(2);
        runner.expect(sections[0].currentMarkdown).toContain('Heading 1');
        runner.expect(sections[1].currentMarkdown).toContain('Heading 2');
    });

    runner.it('should preserve section editing state management', () => {
        const SectionManager = global.SectionManager;
        const manager = new SectionManager();

        const sections = manager.createSectionsFromMarkdown('# Test\nContent');
        const sectionId = sections[0].id;

        // Test start editing
        runner.expect(manager.startEditing(sectionId)).toBeTruthy();
        const section = manager.sections.get(sectionId);
        runner.expect(section.isEditing()).toBeTruthy();

        // Test stop editing
        section.stopEditing();
        runner.expect(section.isEditing()).toBeFalsy();
    });

    runner.it('should preserve event system functionality', () => {
        const SectionManager = global.SectionManager;
        const manager = new SectionManager();

        let eventFired = false;
        let eventData = null;

        manager.on('test-event', (data) => {
            eventFired = true;
            eventData = data;
        });

        manager.emit('test-event', { test: 'data' });

        runner.expect(eventFired).toBeTruthy();
        runner.expect(eventData).toEqual({ test: 'data' });
    });

    runner.it('should preserve document status functionality', () => {
        const SectionManager = global.SectionManager;
        const manager = new SectionManager();

        manager.createSectionsFromMarkdown('# Test\nContent');
        const status = manager.getDocumentStatus();

        runner.expect(status).toHaveProperty('totalSections');
        runner.expect(status).toHaveProperty('editingSections');
        runner.expect(status.totalSections).toBe(1);
    });

    runner.it('should preserve getAllSections functionality', () => {
        const SectionManager = global.SectionManager;
        const manager = new SectionManager();

        const testMarkdown = '# One\nContent\n\n# Two\nMore content';
        manager.createSectionsFromMarkdown(testMarkdown);

        const allSections = manager.getAllSections();
        runner.expect(Array.isArray(allSections)).toBeTruthy();
        runner.expect(allSections.length).toBe(2);
    });

    runner.it('should preserve section splitting functionality', () => {
        const SectionManager = global.SectionManager;
        const manager = new SectionManager();

        const sections = manager.createSectionsFromMarkdown('# Original\nContent');
        const sectionId = sections[0].id;

        const newContent = '# Split 1\nContent 1\n\n# Split 2\nContent 2';
        const newSections = manager.handleSectionSplit(sectionId, newContent);

        runner.expect(Array.isArray(newSections)).toBeTruthy();
        runner.expect(newSections.length).toBe(2);
        runner.expect(manager.sections.has(sectionId)).toBeFalsy(); // Original removed
    });
});

// Export API tests for use during extraction
const SECTION_MANAGER_API_TESTS = [
    (SectionManager) => {
        const manager = new SectionManager();
        if (!manager.sections || !(manager.sections instanceof Map)) {
            throw new Error('sections property missing or not a Map');
        }
    },
    (SectionManager) => {
        const manager = new SectionManager();
        if (typeof manager.createSectionsFromMarkdown !== 'function') {
            throw new Error('createSectionsFromMarkdown method missing');
        }
    },
    (SectionManager) => {
        const manager = new SectionManager();
        if (typeof manager.startEditing !== 'function') {
            throw new Error('startEditing method missing');
        }
    },
    (SectionManager) => {
        const manager = new SectionManager();
        if (typeof manager.stopEditing !== 'function') {
            throw new Error('stopEditing method missing');
        }
    }
];

module.exports = {
    runner,
    EXPECTED_SECTION_MANAGER_API,
    SECTION_MANAGER_API_TESTS
};

// Run tests if called directly
if (require.main === module) {
    console.log('🧪 Testing SectionManager Component Extraction');
    runner.run().then(() => {
        console.log('✅ SectionManager extraction tests completed');
    });
}