-- ============================================================================
-- COMPLETE FIX: Location Name Handling in Approval Pipeline
-- ============================================================================
-- 
-- PURPOSE:
-- This migration fixes the process_approval_transaction function to properly
-- handle location names when creating parks. Without this fix, locations are
-- created without the 'name' field, causing silent failures and parks end up
-- with NULL location_id values.
--
-- WHAT THIS FIXES:
-- 1. Adds park_location_name and park_location_display_name to the SELECT
-- 2. Creates locations with proper name field during CREATE actions
-- 3. Creates locations with proper name field during UPDATE actions
-- 4. Falls back to constructing name from city/state/country if not provided
--
-- TESTING:
-- After applying, test by:
-- 1. Creating a new park submission with location data
-- 2. Approving the submission
-- 3. Verifying the park has a location_id set
-- 4. Checking the locations table has a record with proper name field
--
-- DEPLOYMENT:
-- This can be run manually via Supabase SQL Editor or applied as a migration
-- ============================================================================

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_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;
  v_resolved_park_id UUID;
  v_resolved_manufacturer_id UUID;
  v_resolved_ride_model_id UUID;
  v_resolved_operator_id UUID;
  v_resolved_property_owner_id UUID;
  v_resolved_location_id UUID;
  v_location_name TEXT;
BEGIN
  v_start_time := clock_timestamp();
  v_span_id := gen_random_uuid()::text;
  
  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;
  
  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);
  
  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;
  
  -- ========================================================================
  -- CRITICAL FIX: Added park_location_name and park_location_display_name
  -- ========================================================================
  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,
      psl.name as park_location_name, psl.display_name as park_location_display_name,
      psl.country as park_location_country, psl.state_province as park_location_state, psl.city as park_location_city,
      psl.street_address as park_location_street, psl.postal_code as park_location_postal,
      psl.latitude as park_location_lat, psl.longitude as park_location_lng, psl.timezone as park_location_timezone,
      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.company_type,
      cs.website_url as company_website_url, cs.founded_year, cs.founded_date, cs.founded_date_precision,
      cs.headquarters_location, cs.logo_url, cs.person_type,
      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 park_submission_locations psl ON ps.id = psl.park_submission_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;
      v_entity_id := NULL;
      v_resolved_park_id := NULL; v_resolved_manufacturer_id := NULL; v_resolved_ride_model_id := NULL;
      v_resolved_operator_id := NULL; v_resolved_property_owner_id := NULL; v_resolved_location_id := NULL;
      
      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;
      
      IF v_item.action_type = 'create' THEN
        IF v_item.item_type = 'park' THEN
          -- ========================================================================
          -- CRITICAL FIX: Create location with name field
          -- ========================================================================
          IF v_item.park_location_country IS NOT NULL OR v_item.park_location_city IS NOT NULL THEN
            -- Construct a name for the location, prioritizing display_name, then name, then city/state/country
            v_location_name := COALESCE(
              v_item.park_location_display_name,
              v_item.park_location_name,
              CONCAT_WS(', ',
                NULLIF(v_item.park_location_city, ''),
                NULLIF(v_item.park_location_state, ''),
                NULLIF(v_item.park_location_country, '')
              )
            );
            
            INSERT INTO locations (name, country, state_province, city, street_address, postal_code, latitude, longitude, timezone)
            VALUES (
              v_location_name,
              v_item.park_location_country,
              v_item.park_location_state,
              v_item.park_location_city,
              v_item.park_location_street,
              v_item.park_location_postal,
              v_item.park_location_lat,
              v_item.park_location_lng,
              v_item.park_location_timezone
            )
            RETURNING id INTO v_resolved_location_id;
            
            RAISE NOTICE '[%] Created location % (name: %) for park submission',
              COALESCE(p_request_id, 'NO_REQUEST_ID'), v_resolved_location_id, v_location_name;
          END IF;
          
          -- Resolve temporary references
          IF v_item.operator_id IS NULL THEN
            SELECT approved_entity_id INTO v_resolved_operator_id FROM submission_items
            WHERE submission_id = p_submission_id AND item_type IN ('operator', 'company') AND approved_entity_id IS NOT NULL LIMIT 1;
          END IF;
          
          IF v_item.property_owner_id IS NULL THEN
            SELECT approved_entity_id INTO v_resolved_property_owner_id FROM submission_items
            WHERE submission_id = p_submission_id AND item_type IN ('property_owner', 'company') AND approved_entity_id IS NOT NULL LIMIT 1;
          END IF;
          
          INSERT INTO parks (name, slug, description, park_type, status, location_id, operator_id, property_owner_id,
            opening_date, closing_date, opening_date_precision, closing_date_precision, website_url, phone, email,
            banner_image_url, banner_image_id, card_image_url, card_image_id)
          VALUES (
            v_item.park_name, v_item.park_slug, v_item.park_description, v_item.park_type, v_item.park_status,
            COALESCE(v_resolved_location_id, v_item.location_id),
            COALESCE(v_item.operator_id, v_resolved_operator_id),
            COALESCE(v_item.property_owner_id, v_resolved_property_owner_id),
            v_item.park_opening_date, v_item.park_closing_date,
            v_item.park_opening_date_precision, v_item.park_closing_date_precision,
            v_item.park_website_url, v_item.park_phone, v_item.park_email,
            v_item.park_banner_image_url, v_item.park_banner_image_id,
            v_item.park_card_image_url, v_item.park_card_image_id
          )
          RETURNING id INTO v_entity_id;
          
        ELSIF v_item.item_type = 'ride' THEN
          IF v_item.ride_park_id IS NULL THEN
            SELECT approved_entity_id INTO v_resolved_park_id FROM submission_items
            WHERE submission_id = p_submission_id AND item_type = 'park' AND approved_entity_id IS NOT NULL LIMIT 1;
          END IF;
          
          IF v_item.manufacturer_id IS NULL THEN
            SELECT approved_entity_id INTO v_resolved_manufacturer_id FROM submission_items
            WHERE submission_id = p_submission_id AND item_type IN ('manufacturer', 'company') AND approved_entity_id IS NOT NULL LIMIT 1;
          END IF;
          
          IF v_item.ride_model_id IS NULL THEN
            SELECT approved_entity_id INTO v_resolved_ride_model_id FROM submission_items
            WHERE submission_id = p_submission_id AND item_type = 'ride_model' AND approved_entity_id IS NOT NULL LIMIT 1;
          END IF;
          
          INSERT INTO rides (name, slug, park_id, category, status, manufacturer_id, ride_model_id,
            opening_date, closing_date, opening_date_precision, closing_date_precision, description,
            banner_image_url, banner_image_id, card_image_url, card_image_id)
          VALUES (
            v_item.ride_name, v_item.ride_slug, COALESCE(v_item.ride_park_id, v_resolved_park_id),
            v_item.ride_category, v_item.ride_status,
            COALESCE(v_item.manufacturer_id, v_resolved_manufacturer_id),
            COALESCE(v_item.ride_model_id, v_resolved_ride_model_id),
            v_item.ride_opening_date, v_item.ride_closing_date,
            v_item.ride_opening_date_precision, v_item.ride_closing_date_precision,
            v_item.ride_description, v_item.ride_banner_image_url, v_item.ride_banner_image_id,
            v_item.ride_card_image_url, v_item.ride_card_image_id
          )
          RETURNING id INTO v_entity_id;
          
          IF v_entity_id IS NOT NULL AND v_item.ride_submission_id IS NOT NULL THEN
            INSERT INTO ride_technical_specifications (ride_id, specification_key, specification_value, unit, display_order)
            SELECT v_entity_id, specification_key, specification_value, unit, display_order
            FROM ride_technical_specifications WHERE ride_id = v_item.ride_submission_id;
            
            INSERT INTO ride_coaster_stats (ride_id, stat_key, stat_value, unit, display_order)
            SELECT v_entity_id, stat_key, stat_value, unit, display_order
            FROM ride_coaster_stats WHERE ride_id = v_item.ride_submission_id;
          END IF;
          
        ELSIF v_item.item_type IN ('company', 'manufacturer', 'operator', 'property_owner', 'designer') THEN
          INSERT INTO companies (name, slug, description, company_type, person_type, website_url, founded_year,
            founded_date, founded_date_precision, headquarters_location, logo_url,
            banner_image_url, banner_image_id, card_image_url, card_image_id)
          VALUES (
            v_item.company_name, v_item.company_slug, v_item.company_description, v_item.company_type,
            v_item.person_type, v_item.company_website_url, v_item.founded_year,
            v_item.founded_date, v_item.founded_date_precision, v_item.headquarters_location, v_item.logo_url,
            v_item.company_banner_image_url, v_item.company_banner_image_id,
            v_item.company_card_image_url, v_item.company_card_image_id
          )
          RETURNING id INTO v_entity_id;
          
        ELSIF v_item.item_type = 'ride_model' THEN
          IF v_item.ride_model_manufacturer_id IS NULL THEN
            SELECT approved_entity_id INTO v_resolved_manufacturer_id FROM submission_items
            WHERE submission_id = p_submission_id AND item_type IN ('manufacturer', 'company') AND approved_entity_id IS NOT NULL LIMIT 1;
          END IF;
          
          INSERT INTO ride_models (name, slug, manufacturer_id, category, description,
            banner_image_url, banner_image_id, card_image_url, card_image_id)
          VALUES (
            v_item.ride_model_name, v_item.ride_model_slug,
            COALESCE(v_item.ride_model_manufacturer_id, v_resolved_manufacturer_id),
            v_item.ride_model_category, v_item.ride_model_description,
            v_item.ride_model_banner_image_url, v_item.ride_model_banner_image_id,
            v_item.ride_model_card_image_url, v_item.ride_model_card_image_id
          )
          RETURNING id INTO v_entity_id;
          
        ELSIF v_item.item_type = 'photo' THEN
          INSERT INTO entity_photos (entity_id, entity_type, title, photo_submission_id)
          VALUES (v_item.photo_entity_id, v_item.photo_entity_type, v_item.photo_title, v_item.photo_submission_id)
          RETURNING id INTO v_entity_id;
          
        ELSE
          RAISE EXCEPTION 'Unknown item type for create: %', v_item.item_type;
        END IF;
        
      ELSIF v_item.action_type = 'update' THEN
        IF v_item.entity_id IS NULL THEN
          RAISE EXCEPTION 'Update action requires entity_id';
        END IF;
        
        IF v_item.item_type = 'park' THEN
          -- ========================================================================
          -- CRITICAL FIX: Create location with name field for updates too
          -- ========================================================================
          IF v_item.location_id IS NULL AND (v_item.park_location_country IS NOT NULL OR v_item.park_location_city IS NOT NULL) THEN
            v_location_name := COALESCE(
              v_item.park_location_display_name,
              v_item.park_location_name,
              CONCAT_WS(', ',
                NULLIF(v_item.park_location_city, ''),
                NULLIF(v_item.park_location_state, ''),
                NULLIF(v_item.park_location_country, '')
              )
            );
            
            INSERT INTO locations (name, country, state_province, city, street_address, postal_code, latitude, longitude, timezone)
            VALUES (
              v_location_name,
              v_item.park_location_country,
              v_item.park_location_state,
              v_item.park_location_city,
              v_item.park_location_street,
              v_item.park_location_postal,
              v_item.park_location_lat,
              v_item.park_location_lng,
              v_item.park_location_timezone
            )
            RETURNING id INTO v_resolved_location_id;
            
            RAISE NOTICE '[%] Created location % (name: %) for park update',
              COALESCE(p_request_id, 'NO_REQUEST_ID'), v_resolved_location_id, v_location_name;
          END IF;
          
          UPDATE parks SET
            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 = COALESCE(v_resolved_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,
            updated_at = now()
          WHERE id = v_item.entity_id;
          v_entity_id := v_item.entity_id;
          
        ELSIF v_item.item_type = 'ride' THEN
          UPDATE rides SET
            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,
            updated_at = now()
          WHERE id = v_item.entity_id;
          v_entity_id := v_item.entity_id;
          
        ELSIF v_item.item_type IN ('company', 'manufacturer', 'operator', 'property_owner', 'designer') THEN
          UPDATE companies SET
            name = v_item.company_name, slug = v_item.company_slug, description = v_item.company_description,
            company_type = v_item.company_type, person_type = v_item.person_type,
            website_url = v_item.company_website_url, founded_year = v_item.founded_year,
            founded_date = v_item.founded_date, founded_date_precision = v_item.founded_date_precision,
            headquarters_location = v_item.headquarters_location, logo_url = v_item.logo_url,
            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.card_image_id,
            updated_at = now()
          WHERE id = v_item.entity_id;
          v_entity_id := v_item.entity_id;
          
        ELSIF v_item.item_type = 'ride_model' THEN
          UPDATE ride_models SET
            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,
            updated_at = now()
          WHERE id = v_item.entity_id;
          v_entity_id := v_item.entity_id;
          
        ELSIF v_item.item_type = 'photo' THEN
          UPDATE entity_photos SET title = v_item.photo_title, updated_at = now()
          WHERE id = v_item.entity_id;
          v_entity_id := v_item.entity_id;
          
        ELSE
          RAISE EXCEPTION 'Unknown item type for update: %', v_item.item_type;
        END IF;
        
      ELSE
        RAISE EXCEPTION 'Unknown action type: %', v_item.action_type;
      END IF;
      
      UPDATE submission_items SET approved_entity_id = v_entity_id, approved_at = now(), status = 'approved'
      WHERE id = v_item.id;
      
      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
        RAISE WARNING 'Failed to process item %: % - %', v_item.id, SQLERRM, SQLSTATE;
        v_approval_results := array_append(v_approval_results, jsonb_build_object(
          'item_id', v_item.id, 'status', 'failed', 'error', SQLERRM
        ));
        v_all_approved := FALSE;
        RAISE;
    END;
  END LOOP;
  
  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;
  
  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 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;
$$;

GRANT EXECUTE ON FUNCTION process_approval_transaction TO authenticated;

COMMENT ON FUNCTION process_approval_transaction IS 
'✅ FIXED 2025-11-12: Now properly creates location records with name field during park approval/update. 
This prevents parks from being created with NULL location_id values due to silent INSERT failures.';