/**
 * QM Symbol Info Actions - Fetch and update symbol metadata
 */

import type { ExecutionContext } from '@stock-bot/handlers';
import type { QMHandler } from '../qm.handler';
import { QM_CONFIG, QM_SESSION_IDS } from '../shared/config';
import { QMOperationTracker } from '../shared/operation-tracker';
import { QMSessionManager } from '../shared/session-manager';

// Cache tracker instance
let operationTracker: QMOperationTracker | null = null;

/**
 * Get or initialize the operation tracker
 */
async function getOperationTracker(handler: QMHandler): Promise<QMOperationTracker> {
  if (!operationTracker) {
    const { initializeQMOperations } = await import('../shared/operation-registry');
    operationTracker = await initializeQMOperations(handler.mongodb, handler.logger);
  }
  return operationTracker;
}

/**
 * Update symbol info for a single symbol
 * This is a simple API fetch operation - no tracking logic here
 */
export async function updateSymbolInfo(
  this: QMHandler,
  input: {
    qmSearchCode: string;
  },
  _context?: ExecutionContext
): Promise<{
  success: boolean;
  qmSearchCode: string;
  message: string;
  data?: any;
}> {
  const { qmSearchCode } = input;
  
  this.logger.info(`Fetching symbol info ${qmSearchCode}`, { qmSearchCode });

  const sessionManager = QMSessionManager.getInstance();
  await sessionManager.initialize(this.cache, this.logger);

  // Get a session
  const sessionId = QM_SESSION_IDS.SYMBOL;
  const session = await sessionManager.getSession(sessionId);
  
  if (!session || !session.uuid) {
    throw new Error(`No active session found for QM LOOKUP`);
  }

  try {
    // Build API request for symbol info
    const searchParams = new URLSearchParams({
      fullDescription: 'true',
      qmodTool: 'CompanyProfile',
      symbols: qmSearchCode,
      lang: 'en',
      pathName: '/demo/portal/company-summary.php',
      webmasterId: '500',
    } as Record<string, string>);
    
    const apiUrl = `${QM_CONFIG.SYMBOL_URL}?${searchParams.toString()}`;
    const response = await fetch(apiUrl, {
      method: 'GET',
      headers: session.headers,
      proxy: session.proxy,
    });

    if (!response.ok) {
      throw new Error(`QM API request failed: ${response.status} ${response.statusText}`);
    }

    const symbolData = await response.json();
    
    // Update session success stats
    await sessionManager.incrementSuccessfulCalls(sessionId, session.uuid);

    // Process and store symbol info
    if (symbolData && Array.isArray(symbolData?.results?.company) && symbolData?.results?.company.length > 0) {
      
      // Update symbol in database with new metadata
      const updateData = {
        qmSearchCode: qmSearchCode,
        profile: symbolData?.results?.company[0].profile,
        symbolInfo: symbolData?.results?.company[0].symbolinfo,
      }

      await this.mongodb.updateOne(
        'qmSymbols',
        { qmSearchCode, },
        { $set: updateData },
        { upsert: true }
      );

      // Update operation tracking
      const tracker = await getOperationTracker(this);
      await tracker.updateSymbolOperation(qmSearchCode, 'symbol_info', {
        status: 'success',
        lastRecordDate: new Date()
      });

      this.logger.info(`Symbol info updated successfully ${qmSearchCode}`, { 
        qmSearchCode,
      });

      return {
        success: true,
        qmSearchCode,
        message: `Symbol info updated for ${qmSearchCode}`,
      };
    } else {
      this.logger.warn('No symbol data returned from API', { qmSearchCode });
      return {
        success: false,
        qmSearchCode,
        message: `No data found for symbol ${qmSearchCode}`
      };
    }

  } catch (error) {
    // Update session failure stats
    if (session.uuid) {
      await sessionManager.incrementFailedCalls(sessionId, session.uuid);
    }

    this.logger.error('Error fetching symbol info', { 
      qmSearchCode,
      error: error instanceof Error ? error.message : 'Unknown error'
    });
    
    // Update operation tracking for failure
    const tracker = await getOperationTracker(this);
    await tracker.updateSymbolOperation(qmSearchCode, 'symbol_info', {
      status: 'failure'
    });
    
    return {
      success: false,
      qmSearchCode,
      message: `Failed to fetch symbol info: ${error instanceof Error ? error.message : 'Unknown error'}`
    };
  }
}

/**
 * Schedule symbol info updates for symbols that need refreshing
 * This is the scheduled job that finds stale symbols and queues individual updates
 */
export async function scheduleSymbolInfoUpdates(
  this: QMHandler,
  input: {
    limit?: number;
    forceUpdate?: boolean;
  } = {},
  _context?: ExecutionContext
): Promise<{
  message: string;
  symbolsQueued: number;
  errors: number;
}> {
  const { limit = 100000, forceUpdate = false } = input;
  const tracker = await getOperationTracker(this);
  
  this.logger.info('Scheduling symbol info updates', { limit, forceUpdate });

  try {
    // Get symbols that need updating
    const staleSymbols = await tracker.getStaleSymbols('symbol_info', {
      minHoursSinceRun: forceUpdate ? 0 : 24 * 7, // Weekly by default
      limit
    });

    if (staleSymbols.length === 0) {
      this.logger.info('No symbols need info updates');
      return {
        message: 'No symbols need info updates',
        symbolsQueued: 0,
        errors: 0
      };
    }

    this.logger.info(`Found ${staleSymbols.length} symbols needing info updates`);

    // Get full symbol data to include qmSearchCode
    const symbolDocs = await this.mongodb.find('qmSymbols', {
      qmSearchCode: { $in: staleSymbols }
    }, {
      projection: { qmSearchCode: 1 }
    });

    let queued = 0;
    let errors = 0;

    // Schedule individual update jobs for each symbol
    for (const doc of symbolDocs) {
      try {
        await this.scheduleOperation('update-symbol-info', {
          qmSearchCode: doc.qmSearchCode
        }, {
          // priority: 3,
          // Add some delay to avoid overwhelming the API
          // delay: queued * 1000 // 1 second between jobs
        });
                
        queued++;
      } catch (error) {
        this.logger.error(`Failed to schedule update for ${doc.qmSearchCode}`, { error });
        errors++;
      }
    }

    this.logger.info('Symbol info update scheduling completed', {
      symbolsQueued: queued,
      errors,
      total: staleSymbols.length
    });

    return {
      message: `Scheduled info updates for ${queued} symbols`,
      symbolsQueued: queued,
      errors
    };
  } catch (error) {
    this.logger.error('Symbol info scheduling failed', { error });
    throw error;
  }
}