// Simple automation service for basic start/stop functionality
class SimpleAutomation {
  constructor() {
    this.isRunning = false;
    this.config = null;
    this.intervalId = null;
    this.stats = {
      totalCycles: 0,
      totalTrades: 0,
      startTime: null,
      lastActivity: null,
      status: 'Stopped'
    };
  }

  async start(config) {
    try {
      if (this.isRunning) {
        return { success: false, message: 'Automation already running' };
      }

      // Validate basic config
      if (!config.selectedTimeframes || config.selectedTimeframes.length === 0) {
        return { success: false, message: 'At least one timeframe required' };
      }

      this.config = config;
      this.isRunning = true;
      this.stats.startTime = new Date().toISOString();
      this.stats.status = 'Running';
      this.stats.totalCycles = 0;

      // Detect strategy
      const timeframes = config.selectedTimeframes;
      let strategy = 'General';
      
      const isScalping = timeframes.includes('5') || timeframes.includes('15') || timeframes.includes('30');
      const isDayTrading = timeframes.includes('60') || timeframes.includes('120');
      const isSwingTrading = timeframes.includes('240') || timeframes.includes('D');
      
      if (isScalping) strategy = 'Scalping';
      else if (isDayTrading) strategy = 'Day Trading';
      else if (isSwingTrading) strategy = 'Swing Trading';

      console.log('SIMPLE AUTOMATION: Starting ' + strategy + ' strategy');
      console.log('TIMEFRAMES: [' + timeframes.join(', ') + ']');
      console.log('MODE: ' + (config.mode || 'SIMULATION'));

      // Start simple monitoring cycle (10 minutes for safety)
      this.intervalId = setInterval(() => {
        this.runCycle();
      }, 10 * 60 * 1000); // 10 minutes

      // First cycle after 30 seconds
      setTimeout(() => {
        this.runCycle();
      }, 30000);

      return { 
        success: true, 
        message: strategy + ' automation started successfully',
        strategy: strategy,
        timeframes: timeframes
      };

    } catch (error) {
      console.error('Failed to start automation:', error);
      return { success: false, message: 'Failed to start automation: ' + error.message };
    }
  }

  async stop() {
    try {
      this.isRunning = false;
      this.stats.status = 'Stopped';

      if (this.intervalId) {
        clearInterval(this.intervalId);
        this.intervalId = null;
      }

      console.log('SIMPLE AUTOMATION: Stopped');
      
      return { success: true, message: 'Automation stopped successfully' };
    } catch (error) {
      console.error('Failed to stop automation:', error);
      return { success: false, message: 'Failed to stop automation: ' + error.message };
    }
  }

  async runCycle() {
    try {
      this.stats.totalCycles++;
      this.stats.lastActivity = new Date().toISOString();
      
      console.log('🔄 AUTOMATION CYCLE ' + this.stats.totalCycles + ': ' + (this.config?.symbol || 'SOLUSD'));
      console.log('⏰ TIME: ' + new Date().toLocaleTimeString());
      console.log('📊 STRATEGY: ' + (this.config.selectedTimeframes?.join(', ') || 'N/A') + ' timeframes');
      
      if (this.config) {
        // Perform actual analysis using enhanced screenshot API
        await this.performAnalysis();
      }
      
    } catch (error) {
      console.error('Error in automation cycle:', error);
    }
  }

  async performAnalysis() {
    console.log(`📊 TRUE PARALLEL ANALYSIS: Starting simultaneous analysis for ${this.config.selectedTimeframes.length} timeframes...`);
    console.log(`🚀 This will capture ${this.config.selectedTimeframes.length * 2} screenshots in parallel (${this.config.selectedTimeframes.length} timeframes × 2 layouts)`);
    
    try {
      // Use batch analysis API for true parallelism - captures all timeframes simultaneously
      const response = await fetch('http://localhost:3000/api/batch-analysis', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({
          symbol: this.config.symbol,
          timeframes: this.config.selectedTimeframes, // All timeframes at once!
          layouts: ['ai', 'diy'],
          analyze: true
        })
      });

      if (!response.ok) {
        console.warn(`⚠️ BATCH API ERROR: ${response.status}, falling back to sequential...`);
        return this.performSequentialAnalysis();
      }

      const result = await response.json();
      
      if (result.success && result.analysis) {
        console.log(`✅ PARALLEL ANALYSIS COMPLETE: ${result.totalScreenshots} screenshots captured`);
        console.log(`📊 COMBINED Recommendation: ${result.analysis.recommendation}`);
        console.log(`🎯 COMBINED Confidence: ${result.analysis.confidence}%`);
        console.log(`⏰ Timeframes analyzed: ${result.timeframes.join(', ')}`);
        
        // Check if we should execute a trade based on combined analysis
        if (this.shouldExecuteTrade(result.analysis)) {
          console.log('💰 TRADE SIGNAL: Executing trade...');
          await this.executeTrade(result.analysis);
        } else {
          console.log('📈 SIGNAL: Combined analysis complete, no trade executed');
        }
        
        return;
      } else {
        console.warn('⚠️ BATCH ANALYSIS: No valid data, falling back to sequential...');
        return this.performSequentialAnalysis();
      }
    } catch (error) {
      console.error(`❌ PARALLEL ANALYSIS FAILED:`, error);
      console.log(`🔄 FALLBACK: Using sequential analysis...`);
      return this.performSequentialAnalysis();
    }
  }

  // Fallback sequential analysis method
  async performSequentialAnalysis() {
    try {
      console.log('📸 SEQUENTIAL ANALYSIS: Starting...');
      
      const allResults = [];
      
      // Analyze each timeframe separately
      for (const timeframe of this.config.selectedTimeframes) {
        console.log(`📊 ANALYZING: ${timeframe} timeframe...`);
        
        // Use the enhanced screenshot API for each timeframe
        const response = await fetch('http://localhost:3000/api/enhanced-screenshot', {
          method: 'POST',
          headers: { 'Content-Type': 'application/json' },
          body: JSON.stringify({
            symbol: this.config.symbol,
            timeframe: timeframe,  // Send one timeframe at a time
            layouts: ['ai', 'diy'],
            analyze: true
          })
        });

        if (!response.ok) {
          console.log(`⚠️ TIMEFRAME ${timeframe}: API error ${response.status}`);
          continue;
        }

        const result = await response.json();
        
        if (result.analysis) {
          console.log(`✅ TIMEFRAME ${timeframe}: ${result.analysis.recommendation} (${result.analysis.confidence}%)`);
          allResults.push({
            timeframe: timeframe,
            analysis: result.analysis,
            screenshots: result.screenshots
          });
        } else {
          console.log(`⚠️ TIMEFRAME ${timeframe}: No analysis data`);
        }
      }
      
      if (allResults.length > 0) {
        console.log('✅ MULTI-TIMEFRAME ANALYSIS COMPLETE:');
        
        // Combine results for overall decision
        const combinedAnalysis = this.combineTimeframeAnalysis(allResults);
        
        console.log('📊 COMBINED Recommendation: ' + combinedAnalysis.recommendation);
        console.log('🎯 COMBINED Confidence: ' + combinedAnalysis.confidence + '%');
        console.log('⏰ Timeframes analyzed: ' + allResults.map(r => r.timeframe).join(', '));
        
        // Check if we should execute a trade based on combined analysis
        if (this.shouldExecuteTrade(combinedAnalysis)) {
          console.log('💰 TRADE SIGNAL: Executing trade...');
          await this.executeTrade(combinedAnalysis);
        } else {
          console.log('📈 SIGNAL: Combined analysis complete, no trade executed');
        }
      } else {
        console.log('⚠️ ANALYSIS: No valid analysis data from any timeframe');
      }
      
    } catch (error) {
      console.error('❌ ANALYSIS ERROR:', error.message);
    }
  }

  combineTimeframeAnalysis(results) {
    if (results.length === 1) {
      return results[0].analysis;
    }
    
    // Simple combination logic - can be enhanced
    const recommendations = results.map(r => r.analysis.recommendation?.toLowerCase() || 'hold');
    const confidences = results.map(r => r.analysis.confidence || 0);
    
    // Count votes for each recommendation
    const votes = {};
    recommendations.forEach(rec => {
      votes[rec] = (votes[rec] || 0) + 1;
    });
    
    // Get majority recommendation
    const majorityRec = Object.keys(votes).reduce((a, b) => votes[a] > votes[b] ? a : b);
    
    // Average confidence, but boost if multiple timeframes agree
    const avgConfidence = confidences.reduce((sum, conf) => sum + conf, 0) / confidences.length;
    const agreementBonus = votes[majorityRec] > 1 ? 10 : 0; // +10% if multiple agree
    const finalConfidence = Math.min(95, avgConfidence + agreementBonus);
    
    console.log(`🔄 CONSENSUS: ${majorityRec.toUpperCase()} from ${votes[majorityRec]}/${results.length} timeframes`);
    
    return {
      recommendation: majorityRec,
      confidence: Math.round(finalConfidence),
      reasoning: `Multi-timeframe consensus from ${results.length} timeframes (${results.map(r => r.timeframe).join(', ')})`,
      timeframeResults: results
    };
  }

  shouldExecuteTrade(analysis) {
    if (this.config.mode !== 'LIVE') {
      console.log('📊 SIMULATION MODE: Would execute trade');
      return false;
    }
    
    const recommendation = analysis.recommendation?.toLowerCase() || '';
    const confidence = analysis.confidence || 0;
    
    // Strategy-specific confidence requirements
    let minConfidence = 75;
    if (this.config.selectedTimeframes?.includes('5') || this.config.selectedTimeframes?.includes('15')) {
      minConfidence = 80; // Higher confidence for scalping
    }
    
    const isHighConfidence = confidence >= minConfidence;
    const isClearDirection = recommendation.includes('buy') || recommendation.includes('sell');
    
    console.log('🎯 TRADE DECISION: ' + recommendation + ' (' + confidence + '%) - Min: ' + minConfidence + '%');
    
    return isHighConfidence && isClearDirection;
  }

  async executeTrade(analysis) {
    try {
      console.log('💰 EXECUTING TRADE...');
      
      // Map analysis recommendation to trading side
      const recommendation = analysis.recommendation?.toLowerCase() || '';
      let side = '';
      
      if (recommendation.includes('buy')) {
        side = 'BUY';
      } else if (recommendation.includes('sell')) {
        side = 'SELL';
      } else {
        console.log('❌ TRADE SKIP: Invalid recommendation - ' + recommendation);
        return { success: false, error: 'Invalid recommendation: ' + recommendation };
      }
      
      // Use the trading API with proper fields
      const tradePayload = {
        symbol: this.config.symbol,
        side: side,
        amount: this.config.tradingAmount || 10, // Default to $10 if not set
        type: 'market',
        tradingMode: 'SPOT',
        analysis: analysis // Include analysis for reference
      };
      
      console.log('📊 TRADE PAYLOAD:', tradePayload);
      
      const response = await fetch('http://localhost:3000/api/trading', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify(tradePayload)
      });

      const result = await response.json();
      
      if (result.success) {
        console.log('✅ TRADE EXECUTED: ' + result.message);
        this.stats.totalTrades = (this.stats.totalTrades || 0) + 1;
        this.stats.successfulTrades = (this.stats.successfulTrades || 0) + 1;
      } else {
        console.log('❌ TRADE FAILED: ' + result.error);
      }
      
      return result;
    } catch (error) {
      console.error('❌ TRADE ERROR:', error.message);
      return { success: false, error: error.message };
    }
  }

  getStatus() {
    return {
      isActive: this.isRunning,
      mode: this.config?.mode || 'SIMULATION',
      symbol: this.config?.symbol || 'SOLUSD',
      timeframes: this.config?.selectedTimeframes || [],
      automationType: 'SIMPLE',
      ...this.stats
    };
  }
}

// Export singleton instance
const simpleAutomation = new SimpleAutomation();
export { simpleAutomation };