-- ============================================================================
-- Fix: Remove non-existent approved_at column from submission_items update
-- ============================================================================
-- The submission_items table does not have an approved_at column.
-- This migration removes that reference from the process_approval_transaction function.
-- ============================================================================

DROP FUNCTION IF EXISTS process_approval_transaction(UUID, UUID[], UUID, UUID, TEXT, TEXT, TEXT);

CREATE OR REPLACE FUNCTION process_approval_transaction(
  p_submission_id UUID,
  p_item_ids UUID[],
  p_moderator_id UUID,
  p_submitter_id UUID,
  p_request_id TEXT DEFAULT NULL,
  p_trace_id TEXT DEFAULT NULL,
  p_parent_span_id TEXT DEFAULT NULL
)
RETURNS JSONB
LANGUAGE plpgsql
SECURITY DEFINER
SET search_path = public
AS $$
DECLARE
  v_start_time TIMESTAMPTZ;
  v_result JSONB;
  v_item RECORD;
  v_item_data JSONB;
  v_resolved_refs JSONB;
  v_entity_id UUID;
  v_approval_results JSONB[] := ARRAY[]::JSONB[];
  v_final_status TEXT;
  v_all_approved BOOLEAN := TRUE;
  v_some_approved BOOLEAN := FALSE;
  v_items_processed INTEGER := 0;
  v_span_id TEXT;
BEGIN
  v_start_time := clock_timestamp();
  v_span_id := gen_random_uuid()::text;
  
  -- Log span start with trace context
  IF p_trace_id IS NOT NULL THEN
    RAISE NOTICE 'SPAN: {"spanId": "%", "traceId": "%", "parentSpanId": "%", "name": "process_approval_transaction_rpc", "kind": "INTERNAL", "startTime": %, "attributes": {"submission.id": "%", "item_count": %}}',
      v_span_id,
      p_trace_id,
      p_parent_span_id,
      EXTRACT(EPOCH FROM v_start_time) * 1000,
      p_submission_id,
      array_length(p_item_ids, 1);
  END IF;
  
  RAISE NOTICE '[%] Starting atomic approval transaction for submission %',
    COALESCE(p_request_id, 'NO_REQUEST_ID'),
    p_submission_id;
  
  -- ========================================================================
  -- STEP 1: Set session variables (transaction-scoped with is_local=true)
  -- ========================================================================
  PERFORM set_config('app.current_user_id', p_submitter_id::text, true);
  PERFORM set_config('app.submission_id', p_submission_id::text, true);
  PERFORM set_config('app.moderator_id', p_moderator_id::text, true);
  
  -- ========================================================================
  -- STEP 2: Validate submission ownership and lock status
  -- ========================================================================
  IF NOT EXISTS (
    SELECT 1 FROM content_submissions
    WHERE id = p_submission_id
      AND (assigned_to = p_moderator_id OR assigned_to IS NULL)
      AND status IN ('pending', 'partially_approved')
  ) THEN
    RAISE EXCEPTION 'Submission not found, locked by another moderator, or already processed'
      USING ERRCODE = '42501';
  END IF;
  
  -- ========================================================================
  -- STEP 3: Process each item sequentially within this transaction
  -- ========================================================================
  FOR v_item IN
    SELECT
      si.*,
      ps.name as park_name,
      ps.slug as park_slug,
      ps.description as park_description,
      ps.park_type,
      ps.status as park_status,
      ps.location_id,
      ps.operator_id,
      ps.property_owner_id,
      ps.opening_date as park_opening_date,
      ps.closing_date as park_closing_date,
      ps.opening_date_precision as park_opening_date_precision,
      ps.closing_date_precision as park_closing_date_precision,
      ps.website_url as park_website_url,
      ps.phone as park_phone,
      ps.email as park_email,
      ps.banner_image_url as park_banner_image_url,
      ps.banner_image_id as park_banner_image_id,
      ps.card_image_url as park_card_image_url,
      ps.card_image_id as park_card_image_id,
      rs.name as ride_name,
      rs.slug as ride_slug,
      rs.park_id as ride_park_id,
      rs.category as ride_category,
      rs.status as ride_status,
      rs.manufacturer_id,
      rs.ride_model_id,
      rs.opening_date as ride_opening_date,
      rs.closing_date as ride_closing_date,
      rs.opening_date_precision as ride_opening_date_precision,
      rs.closing_date_precision as ride_closing_date_precision,
      rs.description as ride_description,
      rs.banner_image_url as ride_banner_image_url,
      rs.banner_image_id as ride_banner_image_id,
      rs.card_image_url as ride_card_image_url,
      rs.card_image_id as ride_card_image_id,
      cs.name as company_name,
      cs.slug as company_slug,
      cs.description as company_description,
      cs.website_url as company_website_url,
      cs.founded_year,
      cs.banner_image_url as company_banner_image_url,
      cs.banner_image_id as company_banner_image_id,
      cs.card_image_url as company_card_image_url,
      cs.card_image_id as company_card_image_id,
      rms.name as ride_model_name,
      rms.slug as ride_model_slug,
      rms.manufacturer_id as ride_model_manufacturer_id,
      rms.category as ride_model_category,
      rms.description as ride_model_description,
      rms.banner_image_url as ride_model_banner_image_url,
      rms.banner_image_id as ride_model_banner_image_id,
      rms.card_image_url as ride_model_card_image_url,
      rms.card_image_id as ride_model_card_image_id,
      phs.entity_id as photo_entity_id,
      phs.entity_type as photo_entity_type,
      phs.title as photo_title
    FROM submission_items si
    LEFT JOIN park_submissions ps ON si.park_submission_id = ps.id
    LEFT JOIN ride_submissions rs ON si.ride_submission_id = rs.id
    LEFT JOIN company_submissions cs ON si.company_submission_id = cs.id
    LEFT JOIN ride_model_submissions rms ON si.ride_model_submission_id = rms.id
    LEFT JOIN photo_submissions phs ON si.photo_submission_id = phs.id
    WHERE si.id = ANY(p_item_ids)
    ORDER BY si.order_index, si.created_at
  LOOP
    BEGIN
      v_items_processed := v_items_processed + 1;
      
      -- Log item processing span event
      IF p_trace_id IS NOT NULL THEN
        RAISE NOTICE 'SPAN_EVENT: {"traceId": "%", "parentSpanId": "%", "name": "process_item", "timestamp": %, "attributes": {"item.id": "%", "item.type": "%", "item.action": "%"}}',
          p_trace_id,
          v_span_id,
          EXTRACT(EPOCH FROM clock_timestamp()) * 1000,
          v_item.id,
          v_item.item_type,
          v_item.action_type;
      END IF;
      
      -- Build item data based on entity type
      IF v_item.item_type = 'park' THEN
        v_item_data := jsonb_build_object(
          'name', v_item.park_name,
          'slug', v_item.park_slug,
          'description', v_item.park_description,
          'park_type', v_item.park_type,
          'status', v_item.park_status,
          'location_id', v_item.location_id,
          'operator_id', v_item.operator_id,
          'property_owner_id', v_item.property_owner_id,
          'opening_date', v_item.park_opening_date,
          'closing_date', v_item.park_closing_date,
          'opening_date_precision', v_item.park_opening_date_precision,
          'closing_date_precision', v_item.park_closing_date_precision,
          'website_url', v_item.park_website_url,
          'phone', v_item.park_phone,
          'email', v_item.park_email,
          'banner_image_url', v_item.park_banner_image_url,
          'banner_image_id', v_item.park_banner_image_id,
          'card_image_url', v_item.park_card_image_url,
          'card_image_id', v_item.park_card_image_id
        );
      ELSIF v_item.item_type = 'ride' THEN
        v_item_data := jsonb_build_object(
          'name', v_item.ride_name,
          'slug', v_item.ride_slug,
          'park_id', v_item.ride_park_id,
          'category', v_item.ride_category,
          'status', v_item.ride_status,
          'manufacturer_id', v_item.manufacturer_id,
          'ride_model_id', v_item.ride_model_id,
          'opening_date', v_item.ride_opening_date,
          'closing_date', v_item.ride_closing_date,
          'opening_date_precision', v_item.ride_opening_date_precision,
          'closing_date_precision', v_item.ride_closing_date_precision,
          'description', v_item.ride_description,
          'banner_image_url', v_item.ride_banner_image_url,
          'banner_image_id', v_item.ride_banner_image_id,
          'card_image_url', v_item.ride_card_image_url,
          'card_image_id', v_item.ride_card_image_id
        );
      -- FIX: Support both granular company types AND consolidated 'company' type
      ELSIF v_item.item_type IN ('company', 'manufacturer', 'operator', 'property_owner', 'designer') THEN
        v_item_data := jsonb_build_object(
          'name', v_item.company_name,
          'slug', v_item.company_slug,
          'description', v_item.company_description,
          'website_url', v_item.company_website_url,
          'founded_year', v_item.founded_year,
          'banner_image_url', v_item.company_banner_image_url,
          'banner_image_id', v_item.company_banner_image_id,
          'card_image_url', v_item.company_card_image_url,
          'card_image_id', v_item.company_card_image_id
        );
      ELSIF v_item.item_type = 'ride_model' THEN
        v_item_data := jsonb_build_object(
          'name', v_item.ride_model_name,
          'slug', v_item.ride_model_slug,
          'manufacturer_id', v_item.ride_model_manufacturer_id,
          'category', v_item.ride_model_category,
          'description', v_item.ride_model_description,
          'banner_image_url', v_item.ride_model_banner_image_url,
          'banner_image_id', v_item.ride_model_banner_image_id,
          'card_image_url', v_item.ride_model_card_image_url,
          'card_image_id', v_item.ride_model_card_image_id
        );
      ELSIF v_item.item_type = 'photo' THEN
        v_item_data := jsonb_build_object(
          'entity_id', v_item.photo_entity_id,
          'entity_type', v_item.photo_entity_type,
          'title', v_item.photo_title
        );
      ELSE
        RAISE EXCEPTION 'Unknown item type: %', v_item.item_type;
      END IF;
      
      -- Resolve temporary references
      v_resolved_refs := resolve_temp_references(v_item_data, p_submission_id);
      
      -- Perform the action
      IF v_item.action_type = 'create' THEN
        v_entity_id := perform_create(v_item.item_type, v_resolved_refs, p_submitter_id, p_submission_id);
      ELSIF v_item.action_type = 'update' THEN
        IF v_item.entity_id IS NULL THEN
          RAISE EXCEPTION 'Update action requires entity_id';
        END IF;
        PERFORM perform_update(v_item.item_type, v_item.entity_id, v_resolved_refs, p_submitter_id, p_submission_id);
        v_entity_id := v_item.entity_id;
      ELSE
        RAISE EXCEPTION 'Unknown action type: %', v_item.action_type;
      END IF;
      
      -- Update submission_item with approved entity (removed approved_at - column doesn't exist)
      UPDATE submission_items
      SET approved_entity_id = v_entity_id,
          status = 'approved',
          updated_at = now()
      WHERE id = v_item.id;
      
      -- Track approval results
      v_approval_results := array_append(v_approval_results, jsonb_build_object(
        'item_id', v_item.id,
        'status', 'approved',
        'entity_id', v_entity_id
      ));
      
      v_some_approved := TRUE;
      
    EXCEPTION
      WHEN OTHERS THEN
        -- Log the error
        RAISE WARNING 'Failed to process item %: % - %', v_item.id, SQLERRM, SQLSTATE;
        
        -- Track failure
        v_approval_results := array_append(v_approval_results, jsonb_build_object(
          'item_id', v_item.id,
          'status', 'failed',
          'error', SQLERRM
        ));
        
        v_all_approved := FALSE;
        
        -- Re-raise to rollback transaction
        RAISE;
    END;
  END LOOP;
  
  -- ========================================================================
  -- STEP 4: Update submission status
  -- ========================================================================
  IF v_all_approved THEN
    v_final_status := 'approved';
  ELSIF v_some_approved THEN
    v_final_status := 'partially_approved';
  ELSE
    v_final_status := 'rejected';
  END IF;
  
  UPDATE content_submissions
  SET status = v_final_status,
      resolved_at = CASE WHEN v_all_approved THEN now() ELSE NULL END,
      reviewer_id = p_moderator_id,
      reviewed_at = now()
  WHERE id = p_submission_id;
  
  -- Log span end
  IF p_trace_id IS NOT NULL THEN
    RAISE NOTICE 'SPAN: {"spanId": "%", "traceId": "%", "name": "process_approval_transaction_rpc", "kind": "INTERNAL", "endTime": %, "attributes": {"items_processed": %, "final_status": "%"}}',
      v_span_id,
      p_trace_id,
      EXTRACT(EPOCH FROM clock_timestamp()) * 1000,
      v_items_processed,
      v_final_status;
  END IF;
  
  -- Return result
  RETURN jsonb_build_object(
    'success', v_all_approved,
    'status', v_final_status,
    'items_processed', v_items_processed,
    'results', v_approval_results,
    'duration_ms', EXTRACT(EPOCH FROM (clock_timestamp() - v_start_time)) * 1000
  );
END;
$$;