Update auth, question, answer

drill-and-practice/services/questionService.js

@@ -6,3 +6,37 @@ const countQuestions = async () => {
 };
 
 const getQuestionsByTopicId = async (topicId) => {
+  const result = await sql`SELECT * FROM questions WHERE topic_id = ${topicId}`;
+  return result.rows;
+};
+
+const getQuestionByQuestionId = async (questionId) => {
+  const result = await sql`SELECT * FROM questions WHERE id = ${questionId}`;
+  return result.rows[0];
+};
+
+const addQuestion = async (userId, topicId, question) => {
+  await sql`INSERT INTO questions (user_id, topic_id, question_text) VALUES (${userId}, ${topicId}, ${question})`;
+};
+
+const deleteQuestion = async (questionId) => {
+  await sql`DELETE FROM questions WHERE id = ${questionId}`;
+};
+
+const getRandQuestion = async (topicId) => {
+  const result =
+    await sql`SELECT * FROM questions WHERE topic_id = ${topicId} ORDER BY RANDOM() LIMIT 1`;
+  if (result.rows.length === 0) {
+    return null;
+  }
+  return result.rows[0];
+};
+
+export {
+  countQuestions,
+  getQuestionsByTopicId,
+  getQuestionByQuestionId,
+  addQuestion,
+  deleteQuestion,
+  getRandQuestion,
+};