/**
 * Run Cleanup Jobs Edge Function
 * 
 * Executes all automated cleanup tasks for the Sacred Pipeline:
 * - Expired idempotency keys
 * - Stale temporary references
 * - Abandoned locks (deleted/banned users, expired locks)
 * - Old approved/rejected submissions (90 day retention)
 * 
 * Designed to be called daily via pg_cron
 */

import { createClient } from 'https://esm.sh/@supabase/supabase-js@2.57.4';
import { corsHeaders } from '../_shared/cors.ts';
import { edgeLogger } from '../_shared/logger.ts';

interface CleanupResult {
  idempotency_keys?: {
    deleted: number;
    success: boolean;
    error?: string;
  };
  temp_refs?: {
    deleted: number;
    oldest_date: string | null;
    success: boolean;
    error?: string;
  };
  locks?: {
    released: number;
    details: {
      deleted_user_locks: number;
      banned_user_locks: number;
      expired_locks: number;
    };
    success: boolean;
    error?: string;
  };
  old_submissions?: {
    deleted: number;
    by_status: Record<string, number>;
    oldest_date: string | null;
    success: boolean;
    error?: string;
  };
  execution: {
    started_at: string;
    completed_at: string;
    duration_ms: number;
  };
}

Deno.serve(async (req) => {
  // Handle CORS preflight
  if (req.method === 'OPTIONS') {
    return new Response(null, { headers: corsHeaders });
  }

  const startTime = Date.now();

  try {
    edgeLogger.info('Starting automated cleanup jobs', {
      timestamp: new Date().toISOString(),
    });

    // Create Supabase client with service role
    const supabaseUrl = Deno.env.get('SUPABASE_URL')!;
    const supabaseServiceKey = Deno.env.get('SUPABASE_SERVICE_ROLE_KEY')!;
    
    const supabase = createClient(supabaseUrl, supabaseServiceKey, {
      auth: {
        autoRefreshToken: false,
        persistSession: false,
      },
    });

    // Execute the master cleanup function
    const { data, error } = await supabase.rpc('run_all_cleanup_jobs');

    if (error) {
      edgeLogger.error('Cleanup jobs failed', {
        error: error.message,
        code: error.code,
        duration_ms: Date.now() - startTime,
      });

      return new Response(
        JSON.stringify({
          success: false,
          error: error.message,
          duration_ms: Date.now() - startTime,
        }),
        {
          status: 500,
          headers: { ...corsHeaders, 'Content-Type': 'application/json' },
        }
      );
    }

    const result = data as CleanupResult;

    // Log detailed results
    edgeLogger.info('Cleanup jobs completed successfully', {
      idempotency_keys_deleted: result.idempotency_keys?.deleted || 0,
      temp_refs_deleted: result.temp_refs?.deleted || 0,
      locks_released: result.locks?.released || 0,
      submissions_deleted: result.old_submissions?.deleted || 0,
      duration_ms: result.execution.duration_ms,
    });

    // Log any individual task failures
    if (!result.idempotency_keys?.success) {
      edgeLogger.warn('Idempotency keys cleanup failed', {
        error: result.idempotency_keys?.error,
      });
    }
    if (!result.temp_refs?.success) {
      edgeLogger.warn('Temp refs cleanup failed', {
        error: result.temp_refs?.error,
      });
    }
    if (!result.locks?.success) {
      edgeLogger.warn('Locks cleanup failed', {
        error: result.locks?.error,
      });
    }
    if (!result.old_submissions?.success) {
      edgeLogger.warn('Old submissions cleanup failed', {
        error: result.old_submissions?.error,
      });
    }

    return new Response(
      JSON.stringify({
        success: true,
        results: result,
        total_duration_ms: Date.now() - startTime,
      }),
      {
        status: 200,
        headers: { ...corsHeaders, 'Content-Type': 'application/json' },
      }
    );
  } catch (error) {
    edgeLogger.error('Unexpected error in cleanup jobs', {
      error: error instanceof Error ? error.message : 'Unknown error',
      duration_ms: Date.now() - startTime,
    });

    return new Response(
      JSON.stringify({
        success: false,
        error: error instanceof Error ? error.message : 'Unknown error',
        duration_ms: Date.now() - startTime,
      }),
      {
        status: 500,
        headers: { ...corsHeaders, 'Content-Type': 'application/json' },
      }
    );
  }
});