#!/usr/bin/env node

/**
 *  Chahuadev Framework - CLI Interface
 *  Chahua Development Thailand
 *  CEO: Saharath C.
 * 
 *  Purpose: Command Line Interface สำหรับ automation และ integration
 */

const { program } = require('commander');
const path = require('path');
const fs = require('fs');

// Import core modules (same as app.js)
const ValidationGateway = require('./validation_gateway');
const ContextManager = require('./modules/context-manager');
const ErrorHandler = require('./modules/error-handler');
const Executor = require('./modules/executor');
const SystemDetector = require('./modules/system-detector');
const PluginManager = require('./modules/plugin-manager');

class ChahuadevCLI {
    constructor() {
        this.validationGateway = new ValidationGateway();
        this.contextManager = new ContextManager();
        this.errorHandler = new ErrorHandler();
        this.executor = new Executor();
        this.systemDetector = new SystemDetector();
        this.pluginManager = new PluginManager();
        
        console.log(' Chahuadev CLI initialized');
    }

    async initialize() {
        try {
            // Load plugins
            await this.pluginManager.loadPlugins();
            console.log(' CLI ready with all modules loaded');
        } catch (error) {
            console.error(' CLI initialization failed:', error.message);
            process.exit(1);
        }
    }

    async executeCommand(command, options = {}) {
        const context = this.contextManager.create('cli-execution', {
            command,
            options,
            timestamp: new Date().toISOString(),
            cwd: process.cwd()
        });

        try {
            // Validate request
            const validation = await this.validationGateway.validateRequest({
                command,
                ...options
            });

            if (!validation.success) {
                throw new Error(`Security validation failed: ${validation.error}`);
            }

            // Execute through executor
            const result = await this.executor.execute({
                command,
                project: options.project || process.cwd(),
                strategy: options.strategy
            }, context);

            return result;

        } catch (error) {
            this.errorHandler.handle(error, context.id);
            throw error;
        }
    }

    async scanProject(projectPath) {
        try {
            const fullPath = path.resolve(projectPath);
            
            if (!fs.existsSync(fullPath)) {
                throw new Error(`Project path does not exist: ${fullPath}`);
            }

            const detection = await this.systemDetector.detectProject(fullPath);
            
            console.log('\n Project Scan Results:');
            console.log('========================');
            console.log('Project Path:', fullPath);
            console.log('Detected Type:', detection.type);
            console.log('Confidence:', `${(detection.confidence * 100).toFixed(1)}%`);
            console.log('Strategy:', detection.strategy);
            
            if (detection.details) {
                console.log('\n Details:');
                Object.entries(detection.details).forEach(([key, value]) => {
                    console.log(`  ${key}: ${value}`);
                });
            }

            return detection;

        } catch (error) {
            console.error(' Project scan failed:', error.message);
            throw error;
        }
    }

    async listPlugins() {
        try {
            const plugins = this.pluginManager.getAvailablePlugins();
            
            console.log('\n Available Plugins:');
            console.log('====================');
            
            if (plugins.length === 0) {
                console.log('No plugins loaded');
                return;
            }

            plugins.forEach(plugin => {
                console.log(` ${plugin.name}`);
                console.log(`   File: ${plugin.filename}`);
                console.log(`   Status: ${plugin.status}`);
                console.log(`   Loaded: ${plugin.loadedAt.toISOString()}`);
                if (plugin.metadata.description) {
                    console.log(`   Description: ${plugin.metadata.description}`);
                }
                console.log('');
            });

            return plugins;

        } catch (error) {
            console.error(' Failed to list plugins:', error.message);
            throw error;
        }
    }

    async executePlugin(pluginName, data) {
        try {
            const result = await this.pluginManager.executePlugin(pluginName, data);
            
            if (result.success) {
                console.log(` Plugin ${pluginName} executed successfully`);
                console.log('Result:', JSON.stringify(result.result, null, 2));
            } else {
                console.error(` Plugin ${pluginName} failed: ${result.error}`);
            }

            return result;

        } catch (error) {
            console.error(' Plugin execution failed:', error.message);
            throw error;
        }
    }

    async getStatus() {
        const status = {
            framework: 'Chahuadev Framework',
            version: '1.0.0',
            interface: 'CLI',
            timestamp: new Date().toISOString(),
            modules: {
                validationGateway: !!this.validationGateway,
                contextManager: !!this.contextManager,
                errorHandler: !!this.errorHandler,
                executor: !!this.executor,
                systemDetector: !!this.systemDetector,
                pluginManager: !!this.pluginManager
            },
            plugins: this.pluginManager.getPluginStats()
        };

        console.log('\n System Status:');
        console.log('================');
        console.log(JSON.stringify(status, null, 2));

        return status;
    }
}

// CLI Commands Setup
async function setupCommands() {
    const cli = new ChahuadevCLI();
    await cli.initialize();

    program
        .name('chahuadev')
        .description('Chahuadev Framework CLI')
        .version('1.0.0');

    // Execute command
    program
        .command('execute <command>')
        .description('Execute a command through the framework')
        .option('-p, --project <path>', 'Project path', process.cwd())
        .option('-s, --strategy <strategy>', 'Force specific strategy')
        .action(async (command, options) => {
            try {
                console.log(` Executing: ${command}`);
                const result = await cli.executeCommand(command, options);
                console.log(' Execution completed');
                console.log(JSON.stringify(result, null, 2));
            } catch (error) {
                console.error(' Execution failed:', error.message);
                process.exit(1);
            }
        });

    // Scan project
    program
        .command('scan <path>')
        .description('Scan project and detect type')
        .action(async (projectPath) => {
            try {
                await cli.scanProject(projectPath);
            } catch (error) {
                console.error(' Scan failed:', error.message);
                process.exit(1);
            }
        });

    // Plugin management
    program
        .command('plugins')
        .description('List available plugins')
        .action(async () => {
            try {
                await cli.listPlugins();
            } catch (error) {
                console.error(' Failed to list plugins:', error.message);
                process.exit(1);
            }
        });

    program
        .command('plugin <name>')
        .description('Execute a plugin')
        .option('-d, --data <data>', 'JSON data to pass to plugin', '{}')
        .action(async (name, options) => {
            try {
                const data = JSON.parse(options.data);
                await cli.executePlugin(name, data);
            } catch (error) {
                console.error(' Plugin execution failed:', error.message);
                process.exit(1);
            }
        });

    // Status
    program
        .command('status')
        .description('Show system status')
        .action(async () => {
            try {
                await cli.getStatus();
            } catch (error) {
                console.error(' Failed to get status:', error.message);
                process.exit(1);
            }
        });

    // Help command
    program
        .command('help')
        .description('Show help information')
        .action(() => {
            console.log('\n Chahuadev Framework CLI');
            console.log('===========================');
            console.log('Usage examples:');
            console.log('');
            console.log('  chahuadev execute "npm test"              # Execute npm test');
            console.log('  chahuadev execute "node app.js" -p ./src  # Execute in specific project');
            console.log('  chahuadev scan ./my-project               # Scan project type');
            console.log('  chahuadev plugins                         # List available plugins');
            console.log('  chahuadev plugin zip-compressor           # Execute plugin');
            console.log('  chahuadev status                          # Show system status');
            console.log('');
            program.help();
        });

    return { cli, program };
}

// Main execution
if (require.main === module) {
    setupCommands().then(({ program }) => {
        // Parse command line arguments
        program.parse();
    }).catch(error => {
        console.error(' CLI setup failed:', error.message);
        process.exit(1);
    });
}

module.exports = { ChahuadevCLI, setupCommands };