feat

app/Http/Controllers/SurveyQuestionController.php

@@ -193,48 +193,21 @@ public function destroy($id)
         return response()->json(['message' => 'Question deleted successfully']);
     }
 
-    // USER submits their answer(s) for a question.
+    // USER submits their answer(s) for a single question.
+    // An empty option_ids array (or omitting it) means "no answer" / skip.
     public function answer(Request $request, $id)
     {
         $question = SurveyQuestion::findOrFail($id);
 
         $data = $request->validate([
-            'option_ids' => 'required|array|min:1',
+            'option_ids' => 'nullable|array',
             'option_ids.*' => 'integer',
         ]);
 
-        $optionIds = array_values(array_unique($data['option_ids']));
-
-        // Every selected option must belong to this question.
-        $validOptionIds = $question->options()->pluck('id')->all();
-        if (array_diff($optionIds, $validOptionIds)) {
-            throw ValidationException::withMessages([
-                'option_ids' => ['One or more options do not belong to this question.'],
-            ]);
-        }
-
-        // Enforce single vs multiple selection.
-        if ($question->type === 'single' && count($optionIds) > 1) {
-            throw ValidationException::withMessages([
-                'option_ids' => ['This question allows only a single option.'],
-            ]);
-        }
-
         $userId = auth()->id();
 
-        DB::transaction(function () use ($question, $optionIds, $userId) {
-            // Replace any previous answer for this user + question.
-            $question->answers()->where('user_id', $userId)->delete();
-
-            $rows = array_map(fn ($optionId) => [
-                'user_id' => $userId,
-                'survey_question_id' => $question->id,
-                'survey_option_id' => $optionId,
-                'created_at' => now(),
-                'updated_at' => now(),
-            ], $optionIds);
-
-            $question->answers()->getRelated()->insert($rows);
+        DB::transaction(function () use ($question, $data, $userId) {
+            $this->syncAnswerFor($question, $data['option_ids'] ?? [], $userId);
         });
 
         return response()->json([
@@ -243,6 +216,82 @@ public function answer(Request $request, $id)
         ]);
     }
 
+    // USER submits answers for many questions at once. Each item may carry an
+    // empty option_ids (skip), and the whole answers array may be empty too.
+    public function bulkAnswer(Request $request)
+    {
+        $data = $request->validate([
+            'answers' => 'present|array',
+            'answers.*.question_id' => 'required|integer|exists:survey_questions,id',
+            'answers.*.option_ids' => 'nullable|array',
+            'answers.*.option_ids.*' => 'integer',
+        ]);
+
+        $userId = auth()->id();
+        $items = $data['answers'] ?? [];
+
+        $questions = SurveyQuestion::with('options')
+            ->whereIn('id', collect($items)->pluck('question_id')->unique()->all())
+            ->get()
+            ->keyBy('id');
+
+        DB::transaction(function () use ($items, $questions, $userId) {
+            foreach ($items as $item) {
+                $question = $questions->get($item['question_id']);
+                if (!$question) {
+                    continue;
+                }
+                $this->syncAnswerFor($question, $item['option_ids'] ?? [], $userId);
+            }
+        });
+
+        return response()->json([
+            'message' => 'Answers submitted successfully',
+            'questions' => SurveyQuestion::with(['options', 'userAnswers'])
+                ->where('is_active', true)
+                ->orderBy('order')
+                ->get(),
+        ]);
+    }
+
+    // Validate and replace a single user's answer set for one question.
+    // Empty $optionIds clears the answer (the user chose not to answer it).
+    private function syncAnswerFor(SurveyQuestion $question, array $optionIds, int $userId): void
+    {
+        $optionIds = array_values(array_unique(array_map('intval', $optionIds)));
+
+        // Every selected option must belong to this question.
+        $validOptionIds = $question->options()->pluck('id')->all();
+        if (array_diff($optionIds, $validOptionIds)) {
+            throw ValidationException::withMessages([
+                'option_ids' => ["One or more options do not belong to question #{$question->id}."],
+            ]);
+        }
+
+        // Enforce single vs multiple selection.
+        if ($question->type === 'single' && count($optionIds) > 1) {
+            throw ValidationException::withMessages([
+                'option_ids' => ["Question #{$question->id} allows only a single option."],
+            ]);
+        }
+
+        // Replace any previous answer for this user + question.
+        $question->answers()->where('user_id', $userId)->delete();
+
+        if ($optionIds) {
+            $now = now();
+            $rows = array_map(fn ($optionId) => [
+                'user_id' => $userId,
+                'survey_question_id' => $question->id,
+                'survey_option_id' => $optionId,
+                'created_at' => $now,
+                'updated_at' => $now,
+            ], $optionIds);
+
+            $question->answers()->getRelated()->insert($rows);
+        }
+    }
+
     // USER: suggest media based on the tags attached to the options this user has chosen.
     public function suggestedMedia(Request $request)
     {