72 lines
3.8 KiB
JavaScript
72 lines
3.8 KiB
JavaScript
const express = require('express');
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const { query, getRow } = require('../db');
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const { authenticate, requireRole } = require('../middleware/auth');
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const router = express.Router();
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router.get('/', authenticate, async (req, res) => {
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const polls = await query('SELECT id, title, description, active, created_at FROM polls ORDER BY created_at DESC');
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res.json(polls);
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});
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router.get('/active', authenticate, async (req, res) => {
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const polls = await query('SELECT id, title, description, active, created_at FROM polls WHERE active = 1 ORDER BY created_at DESC');
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for (const p of polls) {
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p.options = JSON.parse(p.options || '[]');
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const rows = await query(`SELECT pv.option_index,
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SUM(CASE WHEN u.role IN ('owner','admin') THEN 1.5 ELSE 1 END) as total
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FROM poll_votes pv JOIN users u ON pv.user_id = u.id
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WHERE pv.poll_id = ? GROUP BY pv.option_index`, [p.id]);
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p.votes = {};
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let total = 0;
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for (const r of rows) { p.votes[r.option_index] = Math.round(r.total * 10) / 10; total += r.total; }
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p.total = Math.round(total * 10) / 10;
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const myVote = await getRow('SELECT option_index FROM poll_votes WHERE poll_id = ? AND user_id = ?', [p.id, req.user.id]);
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p.my_vote = myVote ? myVote.option_index : null;
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p.voted = !!myVote;
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}
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res.json(polls);
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});
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router.post('/', authenticate, requireRole('owner'), async (req, res) => {
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const { title, description, options } = req.body;
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if (!title || !options || !Array.isArray(options) || options.length < 2) return res.status(400).json({ error: '标题和至少2个选项为必填' });
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const r = await query('INSERT INTO polls(title, description, options, created_by) VALUES (?,?,?,?)', [title, description||'', JSON.stringify(options), req.user.id]);
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res.status(201).json({ id: r.insertId, message: '创建成功' });
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});
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router.put('/:id', authenticate, requireRole('owner'), async (req, res) => {
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const p = await getRow('SELECT * FROM polls WHERE id = ?', [req.params.id]);
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if (!p) return res.status(404).json({ error: '投票不存在' });
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const fields = {};
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if (req.body.title) fields.title = req.body.title;
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if (req.body.description !== undefined) fields.description = req.body.description;
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if (req.body.active !== undefined) fields.active = req.body.active ? 1 : 0;
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if (req.body.options) fields.options = JSON.stringify(req.body.options);
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if (!Object.keys(fields).length) return res.status(400).json({ error: '无更新内容' });
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const sets = Object.keys(fields).map(k => `${k} = ?`).join(', ');
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await query(`UPDATE polls SET ${sets} WHERE id = ?`, [...Object.values(fields), req.params.id]);
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res.json({ message: '更新成功' });
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});
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router.delete('/:id', authenticate, requireRole('owner'), async (req, res) => {
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await query('DELETE FROM poll_votes WHERE poll_id = ?', [req.params.id]);
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await query('DELETE FROM polls WHERE id = ?', [req.params.id]);
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res.json({ message: '已删除' });
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});
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router.post('/:id/vote', authenticate, async (req, res) => {
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const p = await getRow('SELECT * FROM polls WHERE id = ? AND active = 1', [req.params.id]);
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if (!p) return res.status(404).json({ error: '投票不存在或已关闭' });
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const voted = await getRow('SELECT id FROM poll_votes WHERE poll_id = ? AND user_id = ?', [p.id, req.user.id]);
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if (voted) return res.status(400).json({ error: '您已投过票' });
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const { option_index } = req.body;
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if (option_index === undefined || option_index === null) return res.status(400).json({ error: '请选择选项' });
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const opts = JSON.parse(p.options || '[]');
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if (option_index < 0 || option_index >= opts.length) return res.status(400).json({ error: '无效选项' });
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await query('INSERT INTO poll_votes(poll_id, user_id, option_index) VALUES (?,?,?)', [req.params.id, req.user.id, option_index]);
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res.json({ message: '投票成功' });
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});
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module.exports = router;
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