// plugins/markov_debug.js - Debug version to diagnose SQLite issues
const fs = require('fs');
const path = require('path');

module.exports = {
    init(bot) {
        console.log('🔍 Markov Debug Plugin Starting...');
        this.bot = bot;
        
        // Test 1: Check if plugins directory exists and is writable
        this.testPluginsDirectory();
        
        // Test 2: Try to load SQLite3
        this.testSQLite3();
        
        // Test 3: Try to create a simple database
        this.testDatabaseCreation();
    },
    
    cleanup(bot) {
        console.log('🔍 Markov Debug Plugin cleaned up');
        if (this.db) {
            this.db.close();
        }
    },
    
    testPluginsDirectory() {
        const pluginsDir = __dirname;
        console.log(`📁 Plugins directory: ${pluginsDir}`);
        
        try {
            // Check if directory exists
            if (fs.existsSync(pluginsDir)) {
                console.log('✅ Plugins directory exists');
                
                // Test write permissions
                const testFile = path.join(pluginsDir, 'test_write.tmp');
                fs.writeFileSync(testFile, 'test');
                fs.unlinkSync(testFile);
                console.log('✅ Plugins directory is writable');
            } else {
                console.log('❌ Plugins directory does not exist');
            }
        } catch (error) {
            console.log('❌ Plugins directory permission error:', error.message);
        }
    },
    
    testSQLite3() {
        console.log('🔍 Testing SQLite3 installation...');
        
        try {
            const sqlite3 = require('sqlite3');
            console.log('✅ SQLite3 module loaded successfully');
            console.log('📦 SQLite3 version:', sqlite3.VERSION);
            this.sqlite3 = sqlite3.verbose();
        } catch (error) {
            console.log('❌ SQLite3 loading failed:', error.message);
            console.log('💡 Try: npm install sqlite3 --build-from-source');
            this.sqlite3 = null;
        }
    },
    
    testDatabaseCreation() {
        if (!this.sqlite3) {
            console.log('⏭️ Skipping database test - SQLite3 not available');
            return;
        }
        
        console.log('🔍 Testing database creation...');
        
        const dbPath = path.join(__dirname, 'test_markov.db');
        console.log(`🗄️ Test database path: ${dbPath}`);
        
        try {
            this.db = new this.sqlite3.Database(dbPath, (err) => {
                if (err) {
                    console.log('❌ Database creation failed:', err.message);
                } else {
                    console.log('✅ Test database created successfully');
                    
                    // Try to create a simple table
                    this.db.run('CREATE TABLE IF NOT EXISTS test (id INTEGER PRIMARY KEY, text TEXT)', (err) => {
                        if (err) {
                            console.log('❌ Table creation failed:', err.message);
                        } else {
                            console.log('✅ Test table created successfully');
                            
                            // Try to insert data
                            this.db.run('INSERT INTO test (text) VALUES (?)', ['test message'], (err) => {
                                if (err) {
                                    console.log('❌ Insert failed:', err.message);
                                } else {
                                    console.log('✅ Test insert successful');
                                    
                                    // Try to read data
                                    this.db.get('SELECT * FROM test', (err, row) => {
                                        if (err) {
                                            console.log('❌ Select failed:', err.message);
                                        } else {
                                            console.log('✅ Test select successful:', row);
                                            console.log('🎉 SQLite3 is working correctly!');
                                        }
                                    });
                                }
                            });
                        }
                    });
                }
            });
        } catch (error) {
            console.log('❌ Database constructor failed:', error.message);
        }
    },
    
    commands: [
        {
            name: 'debugmarkov',
            description: 'Run diagnostic tests for Markov plugin',
            execute: function(context, bot) {
                const plugin = module.exports;
                const target = context.replyTo;
                const from = context.nick;
                
                bot.say(target, `${from}: Running diagnostics...`);
                
                // Re-run all tests
                plugin.testPluginsDirectory();
                plugin.testSQLite3();
                plugin.testDatabaseCreation();
                
                bot.say(target, `${from}: Check console for diagnostic results`);
            }
        },
        
        {
            name: 'checknpm',
            description: 'Check Node.js and NPM environment',
            execute: function(context, bot) {
                const target = context.replyTo;
                const from = context.nick;
                
                const nodeVersion = process.version;
                const platform = process.platform;
                const arch = process.arch;
                
                bot.say(target, `${from}: Node.js ${nodeVersion} on ${platform}-${arch}`);
                
                // Check if we can see package.json
                try {
                    const packagePath = path.join(process.cwd(), 'package.json');
                    if (fs.existsSync(packagePath)) {
                        const pkg = JSON.parse(fs.readFileSync(packagePath, 'utf8'));
                        const hasSQLite = pkg.dependencies && pkg.dependencies.sqlite3;
                        bot.say(target, `${from}: sqlite3 in package.json: ${hasSQLite ? '✅' : '❌'}`);
                    } else {
                        bot.say(target, `${from}: No package.json found`);
                    }
                } catch (error) {
                    bot.say(target, `${from}: Error checking package.json: ${error.message}`);
                }
            }
        },
        
        {
            name: 'testwrite',
            description: 'Test file writing in plugins directory',
            execute: function(context, bot) {
                const target = context.replyTo;
                const from = context.nick;
                
                try {
                    const testPath = path.join(__dirname, 'write_test.txt');
                    const testData = `Test file created at ${new Date().toISOString()}`;
                    
                    fs.writeFileSync(testPath, testData);
                    
                    // Verify it was written
                    const readData = fs.readFileSync(testPath, 'utf8');
                    
                    // Clean up
                    fs.unlinkSync(testPath);
                    
                    bot.say(target, `${from}: ✅ File write test successful`);
                } catch (error) {
                    bot.say(target, `${from}: ❌ File write test failed: ${error.message}`);
                }
            }
        },
        
        {
            name: 'listsqlite',
            description: 'List any existing SQLite database files',
            execute: function(context, bot) {
                const target = context.replyTo;
                const from = context.nick;
                
                try {
                    const files = fs.readdirSync(__dirname);
                    const dbFiles = files.filter(f => f.endsWith('.db') || f.endsWith('.sqlite') || f.endsWith('.sqlite3'));
                    
                    if (dbFiles.length > 0) {
                        bot.say(target, `${from}: Found databases: ${dbFiles.join(', ')}`);
                    } else {
                        bot.say(target, `${from}: No database files found in plugins directory`);
                    }
                    
                    bot.say(target, `${from}: All files: ${files.join(', ')}`);
                } catch (error) {
                    bot.say(target, `${from}: Error listing files: ${error.message}`);
                }
            }
        }
    ]
};