/**
 * Coordinator Agent - Specialized in task orchestration and management
 */

import { BaseAgent } from './base-agent.js';
import type { AgentCapabilities, AgentConfig, AgentEnvironment, TaskDefinition } from '../../swarm/types.js';
import type { ILogger } from '../../core/logger.js';
import type { IEventBus } from '../../core/event-bus.js';
import type { DistributedMemorySystem } from '../../memory/distributed-memory.js';

// Type definitions for coordinator activities
interface ResourceAssignment {
  resource: string;
  task: string;
  utilization: number;
  duration: string;
}

interface TaskProgressItem {
  name: string;
  status: string;
  duration: string;
}

export class CoordinatorAgent extends BaseAgent {
  constructor(
    id: string,
    config: AgentConfig,
    environment: AgentEnvironment,
    logger: ILogger,
    eventBus: IEventBus,
    memory: DistributedMemorySystem
  ) {
    super(id, 'coordinator', config, environment, logger, eventBus, memory);
  }

  protected getDefaultCapabilities(): AgentCapabilities {
    return {
      codeGeneration: false,
      codeReview: false,
      testing: false,
      documentation: true,
      research: true,
      analysis: true,
      webSearch: false,
      apiIntegration: true,
      fileSystem: true,
      terminalAccess: false,
      languages: [],
      frameworks: [],
      domains: [
        'project-management',
        'task-coordination',
        'workflow-orchestration',
        'team-management',
        'planning',
        'communication',
        'resource-allocation',
        'progress-tracking'
      ],
      tools: [
        'task-manager',
        'workflow-orchestrator',
        'communication-hub',
        'progress-tracker',
        'resource-allocator',
        'deadline-manager',
        'status-reporter'
      ],
      maxConcurrentTasks: 8,
      maxMemoryUsage: 512 * 1024 * 1024, // 512MB
      maxExecutionTime: 600000, // 10 minutes
      reliability: 0.95,
      speed: 0.90,
      quality: 0.88
    };
  }

  protected getDefaultConfig(): Partial<AgentConfig> {
    return {
      autonomyLevel: 0.9,
      learningEnabled: true,
      adaptationEnabled: true,
      maxTasksPerHour: 30,
      maxConcurrentTasks: 8,
      timeoutThreshold: 600000,
      reportingInterval: 15000,
      heartbeatInterval: 8000,
      permissions: [
        'file-read',
        'file-write',
        'api-access',
        'agent-management',
        'task-management'
      ],
      trustedAgents: [],
      expertise: {
        'task-orchestration': 0.95,
        'resource-management': 0.90,
        'progress-tracking': 0.92,
        'communication': 0.88,
        'planning': 0.85
      },
      preferences: {
        communicationStyle: 'clear',
        reportingFrequency: 'regular',
        prioritization: 'impact-based',
        escalationThreshold: 'medium'
      }
    };
  }

  override async executeTask(task: TaskDefinition): Promise<any> {
    this.logger.info('Coordinator executing task', {
      agentId: this.id,
      taskType: task.type,
      taskId: task.id
    });

    try {
      switch (task.type) {
        case 'task-orchestration':
          return await this.orchestrateTasks(task);
        case 'progress-tracking':
          return await this.trackProgress(task);
        case 'resource-allocation':
          return await this.allocateResources(task);
        case 'workflow-management':
          return await this.manageWorkflow(task);
        case 'team-coordination':
          return await this.coordinateTeam(task);
        case 'status-reporting':
          return await this.generateStatusReport(task);
        default:
          return await this.performGeneralCoordination(task);
      }
    } catch (error) {
      this.logger.error('Coordination task failed', {
        agentId: this.id,
        taskId: task.id,
        error: error instanceof Error ? error.message : String(error)
      });
      throw error;
    }
  }

  private async orchestrateTasks(task: TaskDefinition): Promise<any> {
    const tasks = task.parameters?.tasks || [];
    const strategy = task.parameters?.strategy || 'sequential';
    const priority = task.parameters?.priority || 'balanced';

    this.logger.info('Orchestrating tasks', {
      taskCount: tasks.length,
      strategy,
      priority
    });

    const orchestration = {
      strategy,
      priority,
      tasks: [],
      dependencies: [],
      timeline: {
        estimated: 0,
        critical_path: [],
        milestones: []
      },
      resource_allocation: {},
      monitoring: {
        checkpoints: [],
        alerts: [],
        metrics: []
      },
      risk_assessment: {
        risks: [],
        mitigation: []
      },
      timestamp: new Date()
    };

    // Simulate task orchestration
    await this.delay(2000);

    orchestration.tasks = tasks.map((t: any, index: number) => ({
      id: t.id || `task-${index + 1}`,
      name: t.name || `Task ${index + 1}`,
      status: 'pending',
      assignee: null,
      estimated_duration: t.duration || 30,
      dependencies: t.dependencies || []
    }));

    return orchestration;
  }

  private async trackProgress(task: TaskDefinition): Promise<any> {
    const project = task.parameters?.project;
    const timeframe = task.parameters?.timeframe || 'weekly';
    const metrics = task.parameters?.metrics || ['completion', 'velocity', 'quality'];

    this.logger.info('Tracking progress', {
      project,
      timeframe,
      metrics
    });

    const progress = {
      project,
      timeframe,
      metrics,
      summary: {
        overall_progress: 0,
        tasks_completed: 0,
        tasks_in_progress: 0,
        tasks_pending: 0,
        blockers: 0
      },
      velocity: {
        current: 0,
        average: 0,
        trend: 'stable'
      },
      quality_metrics: {
        defect_rate: 0,
        review_coverage: 0,
        test_coverage: 0
      },
      timeline: {
        on_track: true,
        estimated_completion: new Date(),
        delays: []
      },
      recommendations: [],
      timestamp: new Date()
    };

    // Simulate progress tracking
    await this.delay(1500);

    progress.summary = {
      overall_progress: 68,
      tasks_completed: 15,
      tasks_in_progress: 6,
      tasks_pending: 4,
      blockers: 1
    };

    return progress;
  }

  private async allocateResources(task: TaskDefinition): Promise<any> {
    const resources = task.input?.resources || [];
    const requirements = task.input?.requirements || [];
    const constraints = task.input?.constraints || [];

    this.logger.info('Allocating resources', {
      resources: resources.length,
      requirements: requirements.length,
      constraints: constraints.length
    });

    const allocation = {
      resources,
      requirements,
      constraints,
      assignments: [] as ResourceAssignment[],
      utilization: {},
      conflicts: [] as any[],
      optimizations: [] as any[],
      recommendations: [] as any[],
      efficiency: 0,
      timestamp: new Date()
    };

    // Simulate resource allocation
    await this.delay(2500);

    allocation.assignments = [
      {
        resource: 'Agent-001',
        task: 'API Development',
        utilization: 0.8,
        duration: '2 days'
      },
      {
        resource: 'Agent-002',
        task: 'Testing',
        utilization: 0.6,
        duration: '1 day'
      }
    ];
    
    allocation.efficiency = 0.85;

    return allocation;
  }

  private async manageWorkflow(task: TaskDefinition): Promise<any> {
    const workflow = task.input?.workflow;
    const stage = task.input?.stage || 'planning';
    const automation = task.input?.automation || false;

    this.logger.info('Managing workflow', {
      workflow,
      stage,
      automation
    });

    const management = {
      workflow,
      stage,
      automation,
      stages: [] as TaskProgressItem[],
      transitions: [] as any[],
      approvals: [] as any[],
      bottlenecks: [] as any[],
      optimizations: [] as any[],
      sla_compliance: {
        on_time: 0,
        quality: 0,
        budget: 0
      },
      timestamp: new Date()
    };

    // Simulate workflow management
    await this.delay(2000);

    management.stages = [
      { name: 'Planning', status: 'completed', duration: '2 days' },
      { name: 'Development', status: 'in_progress', duration: '5 days' },
      { name: 'Testing', status: 'pending', duration: '2 days' },
      { name: 'Deployment', status: 'pending', duration: '1 day' }
    ];

    return management;
  }

  private async coordinateTeam(task: TaskDefinition): Promise<any> {
    const team = task.parameters?.team || [];
    const objectives = task.parameters?.objectives || [];
    const communication = task.parameters?.communication || 'daily';

    this.logger.info('Coordinating team', {
      teamSize: team.length,
      objectives: objectives.length,
      communication
    });

    const coordination = {
      team,
      objectives,
      communication,
      meetings: [],
      assignments: [],
      collaboration: {
        tools: [],
        channels: [],
        frequency: communication
      },
      performance: {
        individual: {},
        team: {
          productivity: 0,
          satisfaction: 0,
          collaboration_score: 0
        }
      },
      issues: [],
      improvements: [],
      timestamp: new Date()
    };

    // Simulate team coordination
    await this.delay(1800);

    coordination.performance.team = {
      productivity: 0.82,
      satisfaction: 0.88,
      collaboration_score: 0.85
    };

    return coordination;
  }

  private async generateStatusReport(task: TaskDefinition): Promise<any> {
    const scope = task.input?.scope || 'project';
    const period = task.input?.period || 'weekly';
    const audience = task.input?.audience || 'stakeholders';
    const format = task.input?.format || 'summary';

    this.logger.info('Generating status report', {
      scope,
      period,
      audience,
      format
    });

    const report = {
      scope,
      period,
      audience,
      format,
      executive_summary: '',
      key_metrics: {},
      achievements: [] as string[],
      challenges: [] as any[],
      next_steps: [] as any[],
      risks: [] as any[],
      recommendations: [] as any[],
      appendix: {
        detailed_metrics: {},
        charts: [] as any[],
        raw_data: {}
      },
      timestamp: new Date()
    };

    // Simulate report generation
    await this.delay(3000);

    report.executive_summary = 'Project is 68% complete and on track for delivery. Team productivity is high with minor blockers identified.';
    
    report.key_metrics = {
      completion: '68%',
      velocity: '12 points/sprint',
      quality: '4.2/5.0',
      budget: '72% utilized'
    };
    
    report.achievements = [
      'Completed API development milestone',
      'Achieved 85% test coverage',
      'Resolved 3 critical bugs'
    ];

    return report;
  }

  private async performGeneralCoordination(task: TaskDefinition): Promise<any> {
    this.logger.info('Performing general coordination', {
      description: task.description
    });

    // Default to task orchestration
    return await this.orchestrateTasks(task);
  }

  private async delay(ms: number): Promise<void> {
    return new Promise(resolve => setTimeout(resolve, ms));
  }

  override getAgentStatus(): any {
    return {
      ...super.getAgentStatus(),
      specialization: 'Task Orchestration & Project Management',
      coordinationCapabilities: [
        'Task Orchestration',
        'Resource Allocation',
        'Progress Tracking',
        'Team Coordination',
        'Workflow Management',
        'Status Reporting'
      ],
      managementStyles: ['Agile', 'Waterfall', 'Hybrid'],
      currentCoordinations: this.getCurrentTasks().length,
      averageCoordinationTime: '5-15 minutes',
      lastCoordinationCompleted: this.getLastTaskCompletedTime(),
      teamSize: this.collaborators.length
    };
  }
}

export const createCoordinatorAgent = (
  id: string,
  config: Partial<AgentConfig>,
  environment: Partial<AgentEnvironment>,
  logger: ILogger,
  eventBus: IEventBus,
  memory: DistributedMemorySystem
): CoordinatorAgent => {
  const defaultConfig = {
    autonomyLevel: 0.9,
    learningEnabled: true,
    adaptationEnabled: true,
    maxTasksPerHour: 20,
    maxConcurrentTasks: 5,
    timeoutThreshold: 180000,
    reportingInterval: 30000,
    heartbeatInterval: 15000,
    permissions: [
      'task-orchestration',
      'resource-allocation',
      'progress-tracking',
      'team-coordination',
      'reporting',
      'workflow-management'
    ],
    trustedAgents: [],
    expertise: {
      'task-orchestration': 0.98,
      'resource-allocation': 0.95,
      'progress-tracking': 0.92,
      'team-coordination': 0.90,
      'workflow-management': 0.94
    },
    preferences: {
      coordinationStyle: 'collaborative',
      reportingFrequency: 'regular',
      escalationThreshold: 'medium',
      teamSize: 'medium'
    }
  };
  const defaultEnv = {
    runtime: 'deno' as const,
    version: '1.40.0',
    workingDirectory: './agents/coordinator',
    tempDirectory: './tmp/coordinator',
    logDirectory: './logs/coordinator',
    apiEndpoints: {},
    credentials: {},
    availableTools: [
      'task-manager',
      'workflow-orchestrator',
      'communication-hub',
      'progress-tracker'
    ],
    toolConfigs: {
      taskManager: { autoAssign: true, prioritization: 'impact' },
      communication: { frequency: 'regular', style: 'clear' }
    }
  };

  return new CoordinatorAgent(
    id,
    { ...defaultConfig, ...config } as AgentConfig,
    { ...defaultEnv, ...environment } as AgentEnvironment,
    logger,
    eventBus,
    memory
  );
};