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migrations/00017_add_moderation_trigger.sql

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+-- +goose Up
+-- +goose StatementBegin
+
+-- =========================================
+-- ФУНКЦИЯ: Автоматический аудит действий модератора
+-- =========================================
+CREATE OR REPLACE FUNCTION audit_moderation_action()
+RETURNS TRIGGER AS $$
+BEGIN
+    -- Проверяем, изменились ли поля модерации
+    IF (OLD.moderated_by IS DISTINCT FROM NEW.moderated_by) OR
+       (OLD.moderated_at IS DISTINCT FROM NEW.moderated_at) THEN
+
+        -- Определяем тип действия на основе статуса
+        IF NEW.status = 'approved' AND OLD.status = 'pending_moderation' THEN
+            INSERT INTO moderator_actions (
+                moderator_id,
+                action_type,
+                target_request_id,
+                comment,
+                metadata
+            ) VALUES (
+                NEW.moderated_by,
+                'approve_request',
+                NEW.id,
+                NEW.moderation_comment,
+                jsonb_build_object(
+                    'previous_status', OLD.status::text,
+                    'new_status', NEW.status::text,
+                    'request_title', NEW.title,
+                    'requester_id', NEW.requester_id
+                )
+            );
+        ELSIF NEW.status = 'rejected' AND OLD.status = 'pending_moderation' THEN
+            INSERT INTO moderator_actions (
+                moderator_id,
+                action_type,
+                target_request_id,
+                comment,
+                metadata
+            ) VALUES (
+                NEW.moderated_by,
+                'reject_request',
+                NEW.id,
+                NEW.moderation_comment,
+                jsonb_build_object(
+                    'previous_status', OLD.status::text,
+                    'new_status', NEW.status::text,
+                    'request_title', NEW.title,
+                    'requester_id', NEW.requester_id,
+                    'rejection_reason', NEW.moderation_comment
+                )
+            );
+        END IF;
+    END IF;
+
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+COMMENT ON FUNCTION audit_moderation_action() IS 'Автоматически создает записи в moderator_actions при модерации заявок';
+
+-- =========================================
+-- ТРИГГЕР: Аудит модерации заявок
+-- =========================================
+CREATE TRIGGER trigger_audit_request_moderation
+    AFTER UPDATE ON requests
+    FOR EACH ROW
+    WHEN (OLD.moderated_by IS DISTINCT FROM NEW.moderated_by OR
+          OLD.moderated_at IS DISTINCT FROM NEW.moderated_at)
+    EXECUTE FUNCTION audit_moderation_action();
+
+COMMENT ON TRIGGER trigger_audit_request_moderation ON requests IS
+    'Автоматически логирует действия модератора в таблицу moderator_actions';
+
+-- +goose StatementEnd
+
+-- +goose Down
+-- +goose StatementBegin
+DROP TRIGGER IF EXISTS trigger_audit_request_moderation ON requests;
+DROP FUNCTION IF EXISTS audit_moderation_action();
+-- +goose StatementEnd