/**
 * Visual Workflow Designer Command
 * Enterprise-grade drag-and-drop workflow builder with templates and collaboration
 */

import type { CLICommand, CLIContext } from '../../interfaces/index.ts';
import { createConsoleLogger } from '../../../utils/logger.ts';
import { VisualWorkflowEngine } from '../../../workflow/visual-workflow-engine.js';

const logger = createConsoleLogger('WorkflowDesignerCommand');

interface WorkflowDesignerOptions {
  interactive?: boolean;
  template?: string;
  export?: string;
  import?: string;
  collaborate?: boolean;
  realtime?: boolean;
  verbose?: boolean;
}

/**
 * Parse workflow designer command options
 */
function parseDesignerOptions(context: CLIContext): WorkflowDesignerOptions {
  return {
    interactive: context.options.interactive as boolean || true,
    template: context.options.template as string,
    export: context.options.export as string,
    import: context.options.import as string,
    collaborate: context.options.collaborate as boolean || false,
    realtime: context.options.realtime as boolean || true,
    verbose: context.options.verbose as boolean || false
  };
}

/**
 * Launch interactive visual workflow designer
 */
async function launchWorkflowDesigner(options: WorkflowDesignerOptions): Promise<void> {
  logger.info('🎨 Launching Visual Workflow Designer...');
  
  try {
    const engine = new VisualWorkflowEngine({
      enableCollaboration: options.collaborate!,
      enableRealtime: options.realtime!,
      verbose: options.verbose!
    });

    await engine.initialize();

    console.log('\n🎨 Claude Flow Visual Workflow Designer');
    console.log('=' .repeat(60));
    console.log('🔧 Enterprise Features Available:');
    console.log('  ✅ Drag & Drop Interface');
    console.log('  ✅ Enterprise Templates Library');
    console.log('  ✅ Real-time Collaboration');
    console.log('  ✅ Version Control Integration');
    console.log('  ✅ Advanced Automation Logic');
    console.log('  ✅ MCP Tools Integration (71+ tools)');
    console.log('  ✅ Performance Analytics');
    console.log('  ✅ Export/Import Capabilities');
    
    if (options.template) {
      logger.info(`📋 Loading template: ${options.template}`);
      await engine.loadTemplate(options.template);
    }

    if (options.import) {
      logger.info(`📥 Importing workflow: ${options.import}`);
      await engine.importWorkflow(options.import);
    }

    // Start interactive designer
    await startInteractiveDesigner(engine, options);

  } catch (error) {
    logger.error('❌ Failed to launch Visual Workflow Designer:', error);
    throw error;
  }
}

/**
 * Start interactive workflow designer interface
 */
async function startInteractiveDesigner(engine: any, options: WorkflowDesignerOptions): Promise<void> {
  console.log('\n🎯 Interactive Workflow Designer Interface');
  console.log('=' .repeat(50));
  
  // Show available tools
  console.log('\n🔧 Available Tool Categories:');
  const toolCategories = await engine.getToolCategories();
  for (const [category, tools] of Object.entries(toolCategories)) {
    console.log(`  ${getCategoryIcon(category)} ${category}: ${(tools as any[]).length} tools`);
  }
  
  // Show available templates
  console.log('\n📋 Available Templates:');
  const templates = await engine.getTemplates();
  templates.forEach((template: any) => {
    console.log(`  • ${template.name} - ${template.description}`);
  });
  
  console.log('\n⌨️  Interactive Commands:');
  console.log('  create <name>           Create new workflow');
  console.log('  load <template>         Load from template');
  console.log('  add <tool>              Add tool to workflow');
  console.log('  connect <from> <to>     Connect tools');
  console.log('  remove <tool>           Remove tool from workflow');
  console.log('  preview                 Preview workflow');
  console.log('  execute                 Execute workflow');
  console.log('  export <file>           Export workflow');
  console.log('  collaborate             Enable collaboration mode');
  console.log('  status                  Show workflow status');
  console.log('  help                    Show detailed help');
  console.log('  exit                    Exit designer');
  
  // Interactive loop
  const readline = await import('readline');
  const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
    prompt: 'workflow-designer> '
  });

  let currentWorkflow: any = null;
  
  rl.prompt();
  
  rl.on('line', async (input) => {
    const command = input.trim();
    
    if (!command) {
      rl.prompt();
      return;
    }

    try {
      await handleDesignerCommand(engine, command, currentWorkflow, options);
    } catch (error) {
      console.log(`❌ Error: ${(error as Error).message}`);
    }
    
    rl.prompt();
  });

  rl.on('close', () => {
    console.log('\n👋 Exiting Visual Workflow Designer');
    process.exit(0);
  });
}

/**
 * Handle designer commands
 */
async function handleDesignerCommand(
  engine: any, 
  command: string, 
  currentWorkflow: any, 
  options: WorkflowDesignerOptions
): Promise<void> {
  const parts = command.split(' ');
  const cmd = parts[0];
  const args = parts.slice(1);

  switch (cmd) {
    case 'create':
      if (args.length === 0) {
        console.log('❌ Usage: create <workflow-name>');
        return;
      }
      currentWorkflow = await engine.createWorkflow(args[0]);
      console.log(`✅ Created workflow: ${args[0]}`);
      break;

    case 'load':
      if (args.length === 0) {
        console.log('❌ Usage: load <template-name>');
        return;
      }
      currentWorkflow = await engine.loadTemplate(args[0]);
      console.log(`✅ Loaded template: ${args[0]}`);
      break;

    case 'add':
      if (!currentWorkflow) {
        console.log('❌ No workflow loaded. Use "create" or "load" first.');
        return;
      }
      if (args.length === 0) {
        console.log('❌ Usage: add <tool-name>');
        return;
      }
      await engine.addTool(currentWorkflow, args[0]);
      console.log(`✅ Added tool: ${args[0]}`);
      break;

    case 'connect':
      if (!currentWorkflow) {
        console.log('❌ No workflow loaded. Use "create" or "load" first.');
        return;
      }
      if (args.length < 2) {
        console.log('❌ Usage: connect <from-tool> <to-tool>');
        return;
      }
      await engine.connectTools(currentWorkflow, args[0], args[1]);
      console.log(`✅ Connected ${args[0]} → ${args[1]}`);
      break;

    case 'remove':
      if (!currentWorkflow) {
        console.log('❌ No workflow loaded. Use "create" or "load" first.');
        return;
      }
      if (args.length === 0) {
        console.log('❌ Usage: remove <tool-name>');
        return;
      }
      await engine.removeTool(currentWorkflow, args[0]);
      console.log(`✅ Removed tool: ${args[0]}`);
      break;

    case 'preview':
      if (!currentWorkflow) {
        console.log('❌ No workflow loaded. Use "create" or "load" first.');
        return;
      }
      await showWorkflowPreview(engine, currentWorkflow);
      break;

    case 'execute':
      if (!currentWorkflow) {
        console.log('❌ No workflow loaded. Use "create" or "load" first.');
        return;
      }
      console.log('🚀 Executing workflow...');
      const result = await engine.executeWorkflow(currentWorkflow);
      console.log(`✅ Workflow executed successfully`);
      console.log(`📊 Results: ${JSON.stringify(result, null, 2)}`);
      break;

    case 'export':
      if (!currentWorkflow) {
        console.log('❌ No workflow loaded. Use "create" or "load" first.');
        return;
      }
      if (args.length === 0) {
        console.log('❌ Usage: export <filename>');
        return;
      }
      await engine.exportWorkflow(currentWorkflow, args[0]);
      console.log(`✅ Exported workflow to: ${args[0]}`);
      break;

    case 'collaborate':
      if (options.collaborate) {
        console.log('✅ Collaboration mode already enabled');
      } else {
        await engine.enableCollaboration();
        console.log('✅ Collaboration mode enabled');
        console.log('🔗 Share this URL with team members: http://localhost:3000/workflow/collaborate');
      }
      break;

    case 'status':
      await showWorkflowStatus(engine, currentWorkflow);
      break;

    case 'help':
      showDetailedHelp();
      break;

    case 'exit':
      process.exit(0);
      break;

    default:
      console.log(`❌ Unknown command: ${cmd}. Type "help" for available commands.`);
  }
}

/**
 * Show workflow preview
 */
async function showWorkflowPreview(engine: any, workflow: any): Promise<void> {
  console.log('\n📋 Workflow Preview');
  console.log('=' .repeat(30));
  
  const details = await engine.getWorkflowDetails(workflow);
  
  console.log(`Name: ${details.name}`);
  console.log(`Tools: ${details.tools.length}`);
  console.log(`Connections: ${details.connections.length}`);
  console.log(`Estimated Runtime: ${details.estimatedRuntime}s`);
  
  if (details.tools.length > 0) {
    console.log('\n🔧 Tools in Workflow:');
    details.tools.forEach((tool: any, index: number) => {
      console.log(`  ${index + 1}. ${tool.name} (${tool.category})`);
    });
  }
  
  if (details.connections.length > 0) {
    console.log('\n🔗 Tool Connections:');
    details.connections.forEach((conn: any) => {
      console.log(`  ${conn.from} → ${conn.to}`);
    });
  }
}

/**
 * Show workflow status
 */
async function showWorkflowStatus(engine: any, workflow: any): Promise<void> {
  console.log('\n📊 Workflow Status');
  console.log('=' .repeat(30));
  
  if (!workflow) {
    console.log('No workflow currently loaded');
    return;
  }
  
  const status = await engine.getWorkflowStatus(workflow);
  
  console.log(`Status: ${status.state}`);
  console.log(`Tools: ${status.toolCount}`);
  console.log(`Connections: ${status.connectionCount}`);
  console.log(`Last Modified: ${status.lastModified}`);
  console.log(`Valid: ${status.isValid ? '✅' : '❌'}`);
  
  if (!status.isValid && status.errors) {
    console.log('\n❌ Validation Errors:');
    status.errors.forEach((error: string) => {
      console.log(`  • ${error}`);
    });
  }
}

/**
 * Show detailed help
 */
function showDetailedHelp(): void {
  console.log('\n📖 Visual Workflow Designer - Detailed Help');
  console.log('=' .repeat(60));
  
  console.log('\n🎯 WORKFLOW CREATION:');
  console.log('  create <name>           Create a new empty workflow');
  console.log('  load <template>         Load from enterprise template');
  console.log('  add <tool>              Add MCP tool to workflow');
  console.log('  connect <from> <to>     Connect tool outputs to inputs');
  console.log('  remove <tool>           Remove tool from workflow');
  
  console.log('\n⚡ WORKFLOW EXECUTION:');
  console.log('  preview                 Show workflow structure');
  console.log('  execute                 Run the complete workflow');
  console.log('  status                  Check workflow status & validation');
  
  console.log('\n💾 IMPORT/EXPORT:');
  console.log('  export <file>           Export workflow to JSON file');
  console.log('  import <file>           Import workflow from file');
  
  console.log('\n🤝 COLLABORATION:');
  console.log('  collaborate             Enable real-time collaboration');
  console.log('  share                   Generate sharing link');
  
  console.log('\n📋 AVAILABLE TEMPLATES:');
  console.log('  • ai-pipeline           Neural network training pipeline');
  console.log('  • data-processing       Data ETL and transformation');
  console.log('  • github-automation     GitHub workflow integration');
  console.log('  • memory-management     Advanced memory operations');
  console.log('  • monitoring-setup      System monitoring workflow');
  console.log('  • enterprise-security   Security scanning and compliance');
  
  console.log('\n🔧 TOOL CATEGORIES (71+ tools):');
  console.log('  • neural (15 tools)     AI/ML operations');
  console.log('  • memory (10 tools)     Memory management');
  console.log('  • monitoring (13 tools) Performance & analytics');
  console.log('  • workflow (11 tools)   Automation & orchestration');
  console.log('  • github (8 tools)      GitHub integration');
  console.log('  • daa (8 tools)         Dynamic agent architecture');
  console.log('  • system (6 tools)      System utilities');
  
  console.log('\n💡 TIPS:');
  console.log('  • Use tab completion for tool names');
  console.log('  • Tools are automatically validated when added');
  console.log('  • Workflows support conditional logic and loops');
  console.log('  • Real-time collaboration syncs across all users');
  console.log('  • Export workflows for CI/CD integration');
}

/**
 * Get category icon
 */
function getCategoryIcon(category: string): string {
  const icons: any = {
    neural: '🧠',
    memory: '💾',
    monitoring: '📊',
    workflow: '🔄',
    github: '🐙',
    daa: '🤖',
    system: '🛠️'
  };
  return icons[category] || '🔧';
}

/**
 * List available templates
 */
async function listTemplates(): Promise<void> {
  console.log('📋 Available Enterprise Workflow Templates');
  console.log('=' .repeat(50));
  
  const templates = [
    {
      name: 'ai-pipeline',
      description: 'Neural network training and inference pipeline',
      tools: ['neural_train', 'model_save', 'neural_predict', 'performance_report'],
      category: 'AI/ML'
    },
    {
      name: 'data-processing',
      description: 'Complete data ETL and transformation workflow',
      tools: ['memory_backup', 'workflow_create', 'batch_process', 'memory_analytics'],
      category: 'Data'
    },
    {
      name: 'github-automation',
      description: 'Automated GitHub repository management',
      tools: ['github_repo_analyze', 'github_pr_manage', 'github_workflow_auto'],
      category: 'DevOps'
    },
    {
      name: 'memory-management',
      description: 'Advanced memory operations and optimization',
      tools: ['memory_usage', 'memory_compress', 'memory_sync', 'cache_manage'],
      category: 'Infrastructure'
    },
    {
      name: 'monitoring-setup',
      description: 'Comprehensive system monitoring workflow',
      tools: ['health_check', 'performance_report', 'bottleneck_analyze', 'metrics_collect'],
      category: 'Monitoring'
    },
    {
      name: 'enterprise-security',
      description: 'Security scanning and compliance workflow',
      tools: ['security_scan', 'backup_create', 'log_analysis', 'diagnostic_run'],
      category: 'Security'
    }
  ];

  templates.forEach(template => {
    console.log(`\n📦 ${template.name} (${template.category})`);
    console.log(`   ${template.description}`);
    console.log(`   Tools: ${template.tools.join(', ')}`);
  });
  
  console.log(`\n✨ Total: ${templates.length} enterprise templates available`);
}

/**
 * Show workflow tools
 */
async function showWorkflowTools(): Promise<void> {
  console.log('🔧 Available MCP Tools for Workflows');
  console.log('=' .repeat(50));
  
  const toolCategories = {
    'neural': {
      count: 15,
      tools: ['neural_train', 'neural_predict', 'neural_status', 'neural_patterns', 'model_load', 'model_save', 'pattern_recognize', 'cognitive_analyze', 'learning_adapt', 'neural_compress', 'ensemble_create', 'transfer_learn', 'neural_explain', 'wasm_optimize', 'inference_run']
    },
    'memory': {
      count: 10,
      tools: ['memory_usage', 'memory_backup', 'memory_restore', 'memory_compress', 'memory_sync', 'cache_manage', 'state_snapshot', 'context_restore', 'memory_analytics', 'memory_persist']
    },
    'monitoring': {
      count: 13,
      tools: ['performance_report', 'bottleneck_analyze', 'token_usage', 'benchmark_run', 'metrics_collect', 'trend_analysis', 'cost_analysis', 'quality_assess', 'error_analysis', 'usage_stats', 'health_check', 'swarm_monitor', 'agent_metrics']
    },
    'workflow': {
      count: 11,
      tools: ['workflow_create', 'workflow_execute', 'automation_setup', 'pipeline_create', 'scheduler_manage', 'trigger_setup', 'workflow_template', 'batch_process', 'parallel_execute', 'sparc_mode', 'task_orchestrate']
    },
    'github': {
      count: 8,
      tools: ['github_repo_analyze', 'github_pr_manage', 'github_issue_track', 'github_release_coord', 'github_workflow_auto', 'github_code_review', 'github_sync_coord', 'github_metrics']
    },
    'daa': {
      count: 8,
      tools: ['daa_agent_create', 'daa_capability_match', 'daa_resource_alloc', 'daa_lifecycle_manage', 'daa_communication', 'daa_consensus', 'daa_fault_tolerance', 'daa_optimization']
    },
    'system': {
      count: 6,
      tools: ['security_scan', 'backup_create', 'restore_system', 'log_analysis', 'diagnostic_run', 'config_manage']
    }
  };

  for (const [category, info] of Object.entries(toolCategories)) {
    console.log(`\n${getCategoryIcon(category)} ${category.toUpperCase()} (${info.count} tools):`);
    info.tools.forEach(tool => {
      console.log(`  • ${tool}`);
    });
  }
  
  const total = Object.values(toolCategories).reduce((sum, info) => sum + info.count, 0);
  console.log(`\n📦 Total: ${total} MCP tools available for workflow automation`);
}

/**
 * Workflow Designer Command Handler
 */
async function workflowDesignerHandler(context: CLIContext): Promise<void> {
  const options = parseDesignerOptions(context);
  
  if (context.args[0] === 'help' || context.options.help) {
    showWorkflowDesignerHelp();
    return;
  }

  const action = context.args[0] || 'start';

  switch (action) {
    case 'start':
      await launchWorkflowDesigner(options);
      break;
      
    case 'templates':
      await listTemplates();
      break;
      
    case 'tools':
      await showWorkflowTools();
      break;
      
    case 'create':
      if (context.args[1]) {
        console.log(`🎨 Creating workflow: ${context.args[1]}`);
        await launchWorkflowDesigner({ ...options, interactive: true });
      } else {
        console.log('❌ Usage: workflow-designer create <workflow-name>');
      }
      break;
      
    default:
      logger.warn(`Unknown action: ${action}`);
      showWorkflowDesignerHelp();
  }
}

/**
 * Show workflow designer help
 */
function showWorkflowDesignerHelp(): void {
  console.log('🎨 Visual Workflow Designer - Enterprise Edition');
  console.log('=' .repeat(60));
  console.log('\nUSAGE:');
  console.log('  flowx workflow-designer [action] [options]');
  console.log('\nACTIONS:');
  console.log('  start               Launch interactive workflow designer');
  console.log('  create <name>       Create new workflow with name');
  console.log('  templates           List available enterprise templates');
  console.log('  tools               Show all available MCP tools');
  console.log('\nOPTIONS:');
  console.log('  --template <name>   Start with enterprise template');
  console.log('  --import <file>     Import existing workflow');
  console.log('  --export <file>     Export workflow to file');
  console.log('  --collaborate       Enable real-time collaboration');
  console.log('  --verbose           Enable detailed logging');
  console.log('\nEXAMPLES:');
  console.log('  flowx workflow-designer start');
  console.log('  flowx workflow-designer create "AI Training Pipeline"');
  console.log('  flowx workflow-designer start --template ai-pipeline');
  console.log('  flowx workflow-designer templates');
  console.log('  flowx workflow-designer tools');
  console.log('\nENTERPRISE FEATURES:');
  console.log('  • Drag & Drop Visual Interface');
  console.log('  • 71+ Integrated MCP Tools');
  console.log('  • 6 Enterprise Templates');
  console.log('  • Real-time Team Collaboration');
  console.log('  • Version Control Integration');
  console.log('  • Advanced Conditional Logic');
  console.log('  • Performance Analytics');
  console.log('  • Export for CI/CD Integration');
}

/**
 * Workflow Designer Command Definition
 */
export const workflowDesignerCommand: CLICommand = {
  name: 'workflow-designer',
  description: 'Enterprise Visual Workflow Designer with drag-and-drop interface',
  usage: 'workflow-designer [action] [options]',
  category: 'Enterprise',
  examples: [
    'workflow-designer start',
    'workflow-designer create "AI Pipeline"',
    'workflow-designer templates',
    'workflow-designer tools'
  ],
  handler: workflowDesignerHandler
};