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| 1 | +const jsonServer = require('json-server'); |
| 2 | +const uuid = require('node-uuid'); |
| 3 | +const crypto = require('crypto'); |
| 4 | +const bodyParser = require('body-parser'); |
| 5 | +const low = require('lowdb'); |
| 6 | +const storage = require('lowdb/file-async'); |
| 7 | + |
| 8 | +// import jsonServer from 'json-server'; |
| 9 | +// import uuid from 'node-uuid'; |
| 10 | +// import bodyParser from 'body-parser'; |
| 11 | + |
| 12 | +// import low from 'lowdb'; |
| 13 | +// import storage from 'lowdb/file-async'; |
| 14 | + |
| 15 | + |
| 16 | +//创建一个Express服务器 |
| 17 | +const server = jsonServer.create(); |
| 18 | + |
| 19 | +//使用json-server默认选择的中间件(logger,static, cors和no-cache) |
| 20 | +server.use(jsonServer.defaults()); |
| 21 | + |
| 22 | +//使用body-parser中间件 |
| 23 | +server.use(bodyParser.json()); |
| 24 | + |
| 25 | + |
| 26 | +//数据文件 |
| 27 | +const dbfile = process.env.prod === '1' ? 'db.json' : '_db.json'; |
| 28 | + |
| 29 | +//创建一个lowdb实例 |
| 30 | +const db = low(dbfile, {storage}); |
| 31 | + |
| 32 | + |
| 33 | +const md5 = str => crypto |
| 34 | + .createHash('md5') |
| 35 | + .update(str.toString()) |
| 36 | + .digest('hex'); |
| 37 | + |
| 38 | +//添加新问卷 |
| 39 | +server.post('/questionnaire/add', (req, res) => { |
| 40 | + const item = req.body; |
| 41 | + item.id = uuid.v1(); |
| 42 | + item.createDate = new Date().toLocaleDateString(); |
| 43 | + db('questionnaires').push(item).then(() => { |
| 44 | + res.json({'success':true, data:item}); |
| 45 | + }); |
| 46 | +}); |
| 47 | + |
| 48 | +//删除已有问卷 |
| 49 | +server.get('/questionnaire/delete/:id', (req, res)=>{ |
| 50 | + db('questionnaires').remove({id: req.params.id}).then(()=>{ |
| 51 | + res.json({'success': true}); |
| 52 | + }); |
| 53 | +}); |
| 54 | + |
| 55 | +//获取所有问卷 |
| 56 | +server.get('/questionnaires', (req, res) => { |
| 57 | + const questionnaires = db('questionnaires'); |
| 58 | + res.json({'success':true, data:questionnaires}); |
| 59 | +}); |
| 60 | + |
| 61 | +//根据id获取问卷数据 |
| 62 | +server.get('/questionnaire/:id', (req, res) => { |
| 63 | + const questionnaire = db('questionnaires').find({id: req.params.id}); |
| 64 | + res.json({'success':true, data:questionnaire}); |
| 65 | +}); |
| 66 | + |
| 67 | +//更新已有问卷 |
| 68 | +server.post('/questionnaire/update', (req, res) => { |
| 69 | + const item = req.body; |
| 70 | + db('questionnaires').chain().find({id:item.id}).assign(item).value(); |
| 71 | + res.json({'success':true, data:item}); |
| 72 | +}); |
| 73 | + |
| 74 | +//发布问卷 |
| 75 | +server.post('/questionnaire/updateState', (req, res)=>{ |
| 76 | + const params = req.body; |
| 77 | + const item = db('questionnaires').chain().find({id:params.id}); |
| 78 | + item.assign({state:params.state}).value(); |
| 79 | + res.json({'success':true, data:item}); |
| 80 | +}); |
| 81 | + |
| 82 | +// get userinfo |
| 83 | +server.get('/user/:username', (req, res) => { |
| 84 | + const user = db('user') |
| 85 | + .find({ |
| 86 | + username: req.params.username |
| 87 | + }); |
| 88 | + |
| 89 | + res.json({ |
| 90 | + success: true, |
| 91 | + data: { |
| 92 | + username: user.username, |
| 93 | + createDate: user.createDate |
| 94 | + } |
| 95 | + }); |
| 96 | +}); |
| 97 | + |
| 98 | +// register |
| 99 | +server.post('/user/add', (req, res) => { |
| 100 | + const item = req.body; |
| 101 | + const user = db('user') |
| 102 | + .find({ |
| 103 | + username: item.username |
| 104 | + }); |
| 105 | + if (user) { |
| 106 | + res.json({ |
| 107 | + success: false, |
| 108 | + message: `"${item.username}" is exists` |
| 109 | + }) |
| 110 | + } else { |
| 111 | + item.password = md5(item.password); |
| 112 | + item.createDate = new Date().toLocaleDateString(); |
| 113 | + db('user') |
| 114 | + .push(item) |
| 115 | + .then(() => { |
| 116 | + res.json({ |
| 117 | + success: true |
| 118 | + }); |
| 119 | + }); |
| 120 | + } |
| 121 | +}); |
| 122 | + |
| 123 | +// login |
| 124 | +server.post('/login', (req, res) => { |
| 125 | + const data = req.body || {}; |
| 126 | + const username = data.username; |
| 127 | + const user = db('user') |
| 128 | + .find({ |
| 129 | + username |
| 130 | + }); |
| 131 | + |
| 132 | + if (user && user.password === md5(data.password)) { |
| 133 | + // todo reset session |
| 134 | + res.json({ |
| 135 | + success: true |
| 136 | + }); |
| 137 | + } else { |
| 138 | + res.json({ |
| 139 | + success: false, |
| 140 | + message: 'username or password error' |
| 141 | + }); |
| 142 | + } |
| 143 | +}); |
| 144 | + |
| 145 | +//路由配置 |
| 146 | +const router = jsonServer.router(dbfile); |
| 147 | +server.use('/api', router); |
| 148 | + |
| 149 | +//启动服务,并监听5000端口 |
| 150 | +server.listen(5000, () => { |
| 151 | + console.log('server is running at ', 5000, dbfile); |
| 152 | +}); |
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