add setting page

route/dashboard.js

@@ -7,6 +7,7 @@ const path = require('path')
 const Printer = require('../PrinterDev')
 const KoaBody = require('koa-body')
 const uuid = require('uuid')
+const config = require('../config.json')
 /* eslint-enable */
 
 router.use(async (c, n) => {
@@ -34,6 +35,29 @@ router.use(async (c, n) => {
 })
 
 router.get('/', async (c, n) => {
+  c.data.route = 'index'
+  await c.render('dashboard/index', c.data)
+})
+
+router.get('/setting', async (c, n) => {
+  c.data.route = 'setting'
+
+  let ttys = await new Promise((resolve, reject) => {
+    fs.readdir(path.resolve('/dev'), (err, list) => {
+      if (err) return resolve([])
+      let arr = []
+      for (let it of list) {
+        if (/^tty[A-z]/.test(it)) {
+          arr.push(path.resolve('/dev', it))
+        }
+      }
+      resolve(arr)
+    })
+  })
+  c.data.ttys = ttys
+
+  c.data.defConfig = config
+
   await c.render('dashboard/index', c.data)
 })
 
@@ -49,4 +73,63 @@ router.post('/api/print', KoaBody(), async (c, n) => {
   c.body = 'print success'
 })
 
+  .post('/api/printer_test', KoaBody(), async (c, n) => {
+    c.async = true
+    let arr = c.request.body
+    if (!arr.device) throw '請輸入印表機連接埠'
+    let device = arr.device
+    let feed = arr.feed || 8
+    if (!isFinite(feed) || feed < 0) throw '切紙前換行必須是整數'
+    feed = typeof feed !== 'number' ? Math.floor(parseInt(feed)) : feed
+
+    let oriDev = Printer.serial
+    let oriFeed = Printer.feed
+
+    if (Printer.isOpen) {
+      await Printer.close()
+    }
+
+    Printer.serial = device
+    Printer.feed = feed
+
+    let status = await Printer.printTestPage()
+
+    if (!status) c.body = '測試失敗'
+    else c.body = '測試成功'
+
+    Printer.serial = oriDev
+    Printer.feed = oriFeed
+    await Printer.connect()
+  })
+  .post('/api/write_config', KoaBody(), async (c, n) => {
+    c.async = true
+    let arr = c.request.body
+    if (!arr.tty) throw '請輸入印表機連接埠'
+    if (!arr.ble || (arr.ble !== 'yes' && arr.ble !== 'no')) throw '請輸入藍牙啟用設定'
+    let feed = arr.feed || 8
+    if (!isFinite(feed) || feed < 0) throw '切紙前換行必須是整數'
+    feed = typeof feed !== 'number' ? Math.floor(parseInt(feed)) : feed
+
+    let json = Object.assign({}, config)
+
+    json.ble.enable = arr.ble === 'yes'
+
+    json.printer.serial = arr.tty
+    json.printer.feed = feed
+
+    let wconfig = await new Promise((resolve, reject) => {
+      fs.writeFile(path.resolve(process.env.PROJECT_ROOT, 'config.json'), JSON.stringify(json, null, 2), {
+        mode: 0o664,
+        encoding: 'utf8',
+        flag: 'w'
+      }, err => {
+        if (err) return resolve(false)
+        return resolve(true)
+      })
+    })
+
+    if (!wconfig) throw '設定檔寫入失敗'
+    c.body = '設定檔寫入成功'
+  })
+
 module.exports = router