import { generateId, getTodayDate } from '../module/utils.ts';
import { app } from '../app.ts';
import { getDb } from '../module/db.ts';
import { dailyQuestions, questionLibrary } from '../module/schema.ts';
import { eq } from 'drizzle-orm';

app.route({
  path: 'daily',
  key: 'random',
  description: '随机获取一条未使用的问题'
}).define(async (ctx) => {
  const force = ctx.query.force ?? false;
  const db = getDb();
  const day = getTodayDate();
  if (force) {
    const existingQuestion = await db
      .select()
      .from(dailyQuestions)
      .where(eq(dailyQuestions.date, day))
      .limit(1)
      .get();

    if (existingQuestion) {
      // 删除dailyQuestions中的记录
      await db
        .delete(dailyQuestions)
        .where(eq(dailyQuestions.id, existingQuestion.id));
      console.log('已强制删除当天的问题记录', day);
    }
  }

  try {
    // 从questionLibrary中随机获取一条isUse为false的问题
    const unusedQuestions = await db
      .select()
      .from(questionLibrary)
      .where(eq(questionLibrary.isUse, false));

    if (unusedQuestions.length === 0) {
      ctx.throw(404, '没有未使用的问题');
      return;
    }

    const randomIndex = Math.floor(Math.random() * unusedQuestions.length);
    const selectedQuestion = unusedQuestions[randomIndex];

    // 更新questionLibrary中的isUse和usedAt字段
    await db
      .update(questionLibrary)
      .set({
        isUse: true,
        usedAt: day,
      })
      .where(eq(questionLibrary.id, selectedQuestion.id));


    // 将选中的问题添加到dailyQuestions中
    const insertedQuestions = await db
      .insert(dailyQuestions)
      .values({
        id: generateId(),
        qid: selectedQuestion.id,
        title: selectedQuestion.title,
        description: '',
        tags: selectedQuestion.tags,
        date: day,
        createdAt: new Date().toISOString(),
        updatedAt: new Date().toISOString(),
      }).returning();
    ctx.body = { question: insertedQuestions[0], day: day };
  } catch (error) {
    console.error('随机获取问题失败:', error);
    ctx.throw(500, '随机获取问题失败');
  }
}).addTo(app);

app.route({
  description: '获取今天的问题',
  path: 'daily',
  key: 'today'
}).define(async (ctx) => {
  const db = getDb();
  const day = getTodayDate();

  try {
    const todayQuestion = await db
      .select()
      .from(dailyQuestions)
      .where(eq(dailyQuestions.date, day))
      .limit(1)
      .get();

    if (!todayQuestion) {
      const res = await ctx.call({
        path: 'daily',
        key: 'random',
      });
      if (res.code === 200) {
        ctx.body = res.body;
        return;
      }
      ctx.throw(500, '获取今天的问题失败');
    }

    ctx.body = {
      question: todayQuestion,
      day: day,
    };
  } catch (error) {
    console.error('获取今天的问题失败:', error);
    ctx.throw(500, '获取今天的问题失败');
  }
}).addTo(app);