#!/usr/bin/env node

/**
 * TDD Tests for Intelligent Save Filename Generation Recovery
 */

const { TestRunner } = require('./test_runner.js');
const runner = new TestRunner();

// Test intelligent filename generation functionality
runner.describe('Intelligent Save Filename Generation System', () => {

    runner.it('should have generateSaveFilename method in MarkitectCleanEditor', async () => {
        // Load editor
        delete require.cache[require.resolve('/home/worsch/markitect_project/markitect/static/editor.js')];
        require('/home/worsch/markitect_project/markitect/static/editor.js');

        if (global.MarkitectCleanEditor) {
            const container = document.createElement('div');
            const editor = new global.MarkitectCleanEditor('# Test\n\nContent', container);
            const hasGenerateSaveFilename = typeof editor.generateSaveFilename === 'function';
            runner.expect(hasGenerateSaveFilename).toBeTruthy();
        }
    });

    runner.it('should use original filename from options when available', async () => {
        if (global.MarkitectCleanEditor) {
            const container = document.createElement('div');
            const editor = new global.MarkitectCleanEditor('# Test\n\nContent', container, {
                originalFilename: 'my-document.md'
            });

            const filename = editor.generateSaveFilename();
            runner.expect(filename).toBe('my-document.md');
        }
    });

    runner.it('should extract filename from page title when no original filename', async () => {
        if (global.MarkitectCleanEditor) {
            // Set a mock document title
            const originalTitle = document.title;
            document.title = 'My Amazing Document | Website';

            const container = document.createElement('div');
            const editor = new global.MarkitectCleanEditor('# Test\n\nContent', container);

            const filename = editor.generateSaveFilename();
            runner.expect(filename).toBe('My-Amazing-Document.md');

            // Restore original title
            document.title = originalTitle;
        }
    });

    runner.it('should extract filename from URL pathname when no title', async () => {
        if (global.MarkitectCleanEditor) {
            // Mock window.location
            const originalLocation = global.location;
            global.location = { pathname: '/docs/user-guide/getting-started' };

            const container = document.createElement('div');
            const editor = new global.MarkitectCleanEditor('# Test\n\nContent', container);

            const filename = editor.generateSaveFilename();
            runner.expect(filename).toBe('getting-started.md');

            // Restore original location
            global.location = originalLocation;
        }
    });

    runner.it('should extract filename from first heading when other methods fail', async () => {
        if (global.MarkitectCleanEditor) {
            const container = document.createElement('div');
            const markdownContent = '# Advanced JavaScript Patterns\n\nThis is a guide to advanced patterns.';
            const editor = new global.MarkitectCleanEditor(markdownContent, container);

            const filename = editor.generateSaveFilename();
            runner.expect(filename).toBe('Advanced-JavaScript-Patterns.md');
        }
    });

    runner.it('should use timestamp when all other methods fail', async () => {
        if (global.MarkitectCleanEditor) {
            const container = document.createElement('div');
            const markdownContent = 'Just some content without any headings or special info.';
            const editor = new global.MarkitectCleanEditor(markdownContent, container);

            const filename = editor.generateSaveFilename();
            // Should start with 'document-' and end with '.md'
            runner.expect(filename.startsWith('document-')).toBeTruthy();
            runner.expect(filename.endsWith('.md')).toBeTruthy();

            // Should contain timestamp
            const timestampPart = filename.replace('document-', '').replace('.md', '');
            runner.expect(timestampPart.length).toBeGreaterThan(8); // YYYYMMDD format or longer
        }
    });

    runner.it('should sanitize filenames to be filesystem-safe', async () => {
        if (global.MarkitectCleanEditor) {
            const container = document.createElement('div');
            const markdownContent = '# This/Has\\Bad:Characters*And?More<Stuff>\n\nContent';
            const editor = new global.MarkitectCleanEditor(markdownContent, container);

            const filename = editor.generateSaveFilename();
            // Should not contain filesystem-unsafe characters
            runner.expect(filename).not.toMatch(/[\/\\:*?"<>|]/);
            runner.expect(filename).toBe('This-Has-Bad-Characters-And-More-Stuff.md');
        }
    });

    runner.it('should handle edge cases like empty content gracefully', async () => {
        if (global.MarkitectCleanEditor) {
            const container = document.createElement('div');
            const editor = new global.MarkitectCleanEditor('', container);

            const filename = editor.generateSaveFilename();
            runner.expect(filename.endsWith('.md')).toBeTruthy();
            runner.expect(filename.length).toBeGreaterThan(3); // More than just '.md'
        }
    });

    runner.it('should prefer higher priority methods over lower priority', async () => {
        if (global.MarkitectCleanEditor) {
            const container = document.createElement('div');
            const markdownContent = '# Content Heading\n\nSome content';
            const editor = new global.MarkitectCleanEditor(markdownContent, container, {
                originalFilename: 'priority-test.md'
            });

            const filename = editor.generateSaveFilename();
            // Should use original filename (method 1) over heading (method 4)
            runner.expect(filename).toBe('priority-test.md');
        }
    });

    runner.it('should have helper methods for each fallback strategy', async () => {
        if (global.MarkitectCleanEditor) {
            const container = document.createElement('div');
            const editor = new global.MarkitectCleanEditor('# Test\n\nContent', container);

            // Test helper methods exist
            runner.expect(typeof editor.sanitizeFilename).toBe('function');
            runner.expect(typeof editor.extractFilenameFromTitle).toBe('function');
            runner.expect(typeof editor.extractFilenameFromUrl).toBe('function');
            runner.expect(typeof editor.extractFilenameFromHeading).toBe('function');
            runner.expect(typeof editor.generateTimestampFilename).toBe('function');
        }
    });
});

// Run the tests
if (require.main === module) {
    console.log('💾 Running TDD Tests for Intelligent Filename Generation Recovery');
    runner.run().then(() => {
        console.log('✅ Test run complete - now implement filename generation!');
    });
}

module.exports = runner;