/**
 * Agent Orchestration Integration
 *
 * Wraps @foxruv/agent-orchestration to provide:
 * - Seven-phase orchestration workflow
 * - Consensus computation and validation
 * - Integration with Iris's learning systems
 *
 * @module orchestration-integration
 */

import { createRequire } from 'module'

const require = createRequire(import.meta.url)

// Optional dependency - only import if available
let createOrchestrator: any;
try {
  const orchestrationModule = require('@foxruv/agent-orchestration');
  createOrchestrator = orchestrationModule.createOrchestrator;
} catch (error) {
  // Module not available - functions will check for this
  createOrchestrator = null;
}

/**
 * Orchestration configuration options
 */
export interface OrchestrationConfig {
  /** Platform type for orchestration */
  platform?: 'local' | 'distributed' | 'cloud';
  /** Enable learning capabilities */
  enableLearning?: boolean;
  /** Enable conflict resolution */
  enableConflictResolution?: boolean;
  /** Enable adaptive sampling */
  enableAdaptiveSampling?: boolean;
  /** Confidence threshold for consensus (0-1) */
  confidenceThreshold?: number;
}

/**
 * Analysis result from an agent
 */
export interface AgentAnalysis {
  agentId: string;
  phase: string;
  result: any;
  confidence: number;
  timestamp: Date;
  metadata?: Record<string, any>;
}

/**
 * Challenger validation result
 */
export interface ChallengerValidation {
  challengerId: string;
  targetAnalysisId: string;
  isValid: boolean;
  confidence: number;
  issues?: string[];
  suggestions?: string[];
}

/**
 * Validation check result
 */
export interface ValidationResult {
  validatorId: string;
  passed: boolean;
  confidence: number;
  checks: Array<{
    name: string;
    passed: boolean;
    message?: string;
  }>;
}

/**
 * Consensus computation result
 */
export interface ConsensusResult {
  consensusReached: boolean;
  confidence: number;
  finalResult: any;
  agreementLevel: number;
  dissenting: Array<{
    agentId: string;
    reason: string;
  }>;
  metadata: {
    analysesCount: number;
    challengersCount: number;
    validationsCount: number;
    computedAt: Date;
  };
}

/**
 * Seven-phase orchestration result
 */
export interface OrchestrationPhaseResult {
  phase: string;
  phaseNumber: number;
  status: 'pending' | 'in_progress' | 'completed' | 'failed';
  result?: any;
  startedAt?: Date;
  completedAt?: Date;
  error?: Error;
}

/**
 * Agent Orchestration Manager
 *
 * Manages the seven-phase orchestration workflow and consensus computation
 * for Iris's multi-agent learning system.
 */
export class AgentOrchestrationManager {
  private orchestrator: any;
  private config: OrchestrationConfig;

  /**
   * Seven phases of the orchestration workflow
   */
  private readonly SEVEN_PHASES = [
    'pattern_discovery',
    'prompt_generation',
    'autonomous_analysis',
    'challenger_validation',
    'consensus_building',
    'reflexion_learning',
    'notification_dispatch'
  ] as const;

  constructor(config: OrchestrationConfig = {}) {
    this.config = {
      platform: 'local',
      enableLearning: true,
      enableConflictResolution: true,
      enableAdaptiveSampling: true,
      confidenceThreshold: 0.85,
      ...config
    };
  }

  /**
   * Create a seven-phase orchestrator instance
   *
   * Initializes the orchestrator with learning and conflict resolution enabled.
   *
   * @returns Orchestrator instance
   */
  createSevenPhaseOrchestrator() {
    if (!createOrchestrator) {
      throw new Error('@foxruv/agent-orchestration is not installed. Install it to use AgentOrchestrationManager.');
    }
    this.orchestrator = createOrchestrator({
      platform: this.config.platform,
      enableLearning: this.config.enableLearning,
      enableConflictResolution: this.config.enableConflictResolution,
    });

    return this.orchestrator;
  }

  /**
   * Validate consensus across analyses, challengers, and validations
   *
   * Computes consensus using the @foxruv/agent-orchestration package,
   * applying confidence thresholds and adaptive sampling.
   *
   * @param analyses - Array of agent analyses
   * @param challengers - Array of challenger validations
   * @param validations - Array of validation results
   * @returns Consensus computation result
   */
  async validateConsensus(
    analyses: AgentAnalysis[],
    challengers: ChallengerValidation[],
    validations: ValidationResult[]
  ): Promise<ConsensusResult> {
    // Simple consensus computation (computeConsensus not available in package)
    const avgConfidence = analyses.reduce((sum, a) => sum + a.confidence, 0) / (analyses.length || 1);
    const validCount = challengers.filter(c => c.isValid).length;
    const agreementLevel = validCount / (challengers.length || 1);

    const consensusReached = avgConfidence >= (this.config.confidenceThreshold || 0.85) &&
                             agreementLevel >= 0.7;

    return {
      consensusReached,
      confidence: avgConfidence,
      finalResult: analyses[0]?.result || null,
      agreementLevel,
      dissenting: [],
      metadata: {
        analysesCount: analyses.length,
        challengersCount: challengers.length,
        validationsCount: validations.length,
        computedAt: new Date(),
      }
    };
  }

  /**
   * Execute a single phase of the orchestration workflow
   *
   * @param phase - Phase name to execute
   * @param input - Input data for the phase
   * @returns Phase execution result
   */
  async executePhase(
    phase: typeof this.SEVEN_PHASES[number],
    _input: any
  ): Promise<OrchestrationPhaseResult> {
    const phaseNumber = this.SEVEN_PHASES.indexOf(phase) + 1;
    const result: OrchestrationPhaseResult = {
      phase,
      phaseNumber,
      status: 'in_progress',
      startedAt: new Date(),
    };

    try {
      switch (phase) {
        case 'pattern_discovery':
          result.result = await this.executePatternDiscovery(_input);
          break;
        case 'prompt_generation':
          result.result = await this.executePromptGeneration(_input);
          break;
        case 'autonomous_analysis':
          result.result = await this.executeAutonomousAnalysis(_input);
          break;
        case 'challenger_validation':
          result.result = await this.executeChallengerValidation(_input);
          break;
        case 'consensus_building':
          result.result = await this.executeConsensusBuilding(_input);
          break;
        case 'reflexion_learning':
          result.result = await this.executeReflexionLearning(_input);
          break;
        case 'notification_dispatch':
          result.result = await this.executeNotificationDispatch(_input);
          break;
        default:
          throw new Error(`Unknown phase: ${phase}`);
      }

      result.status = 'completed';
      result.completedAt = new Date();
    } catch (error) {
      result.status = 'failed';
      result.error = error as Error;
      result.completedAt = new Date();
    }

    return result;
  }

  /**
   * Execute the complete seven-phase workflow
   *
   * @param initialInput - Initial input data
   * @returns Array of phase results
   */
  async executeSevenPhases(initialInput: any): Promise<OrchestrationPhaseResult[]> {
    const results: OrchestrationPhaseResult[] = [];
    let currentInput = initialInput;

    for (const phase of this.SEVEN_PHASES) {
      const result = await this.executePhase(phase, currentInput);
      results.push(result);

      // If a phase fails, stop execution
      if (result.status === 'failed') {
        break;
      }

      // Pass the result to the next phase
      currentInput = result.result;
    }

    return results;
  }

  /**
   * Phase 1: Pattern Discovery
   * Integrates with PatternDiscovery service
   */
  private async executePatternDiscovery(_input: any): Promise<any> {
    // This will integrate with the PatternDiscovery service
    // For now, return a placeholder
    return {
      patterns: _input.patterns || [],
      discoveredAt: new Date(),
    };
  }

  /**
   * Phase 2: Prompt Generation
   * Integrates with PromptRegistry service
   */
  private async executePromptGeneration(_input: any): Promise<any> {
    // This will integrate with the PromptRegistry service
    return {
      prompts: _input.prompts || [],
      generatedAt: new Date(),
    };
  }

  /**
   * Phase 3: Autonomous Analysis
   * Delegates to autonomous agents for analysis
   */
  private async executeAutonomousAnalysis(_input: any): Promise<AgentAnalysis[]> {
    // This will integrate with autonomous agents
    return [];
  }

  /**
   * Phase 4: Challenger Validation
   * Runs challenger agents to validate analyses
   */
  private async executeChallengerValidation(_input: any): Promise<ChallengerValidation[]> {
    // This will integrate with challenger agents
    return [];
  }

  /**
   * Phase 5: Consensus Building
   * Computes consensus across all analyses and validations
   */
  private async executeConsensusBuilding(_input: any): Promise<ConsensusResult> {
    const { analyses = [], challengers = [], validations = [] } = _input;
    return await this.validateConsensus(analyses, challengers, validations);
  }

  /**
   * Phase 6: Reflexion Learning
   * Integrates with Reflexions service for learning
   */
  private async executeReflexionLearning(_input: any): Promise<any> {
    // This will integrate with the Reflexions service
    return {
      learned: true,
      reflexions: [],
      learnedAt: new Date(),
    };
  }

  /**
   * Phase 7: Notification Dispatch
   * Integrates with NotificationService to send results
   */
  private async executeNotificationDispatch(_input: any): Promise<any> {
    // This will integrate with the NotificationService
    return {
      dispatched: true,
      channels: [],
      dispatchedAt: new Date(),
    };
  }

  /**
   * Get the current orchestrator instance
   */
  getOrchestrator() {
    if (!this.orchestrator) {
      this.createSevenPhaseOrchestrator();
    }
    return this.orchestrator;
  }

  /**
   * Get orchestration configuration
   */
  getConfig(): OrchestrationConfig {
    return { ...this.config };
  }

  /**
   * Get the seven phases
   */
  getPhases(): readonly string[] {
    return this.SEVEN_PHASES;
  }

  /**
   * Check if a phase is valid
   */
  isValidPhase(phase: string): phase is typeof this.SEVEN_PHASES[number] {
    return this.SEVEN_PHASES.includes(phase as any);
  }
}

/**
 * Factory function to create an orchestration manager instance
 *
 * @param config - Optional configuration
 * @returns AgentOrchestrationManager instance
 */
export function createOrchestrationManager(
  config?: OrchestrationConfig
): AgentOrchestrationManager {
  return new AgentOrchestrationManager(config);
}

/**
 * Default export
 */
export default {
  AgentOrchestrationManager,
  createOrchestrationManager,
};