feat: 新增 maptiler 资源缓存

app/services/maptiler/controller.js

+const fs = require('fs')
+const path = require('path')
+const https = require('https')
+
+function downloadFile(url, filepath) {
+  if (!fs.existsSync(filepath)) {
+    fs.mkdirSync(path.dirname(filepath), { recursive: true })
+  }
+
+  return new Promise((resolve, reject) => {
+    //忽略证书认证
+    process.env['NODE_TLS_REJECT_UNAUTHORIZED'] = 0
+    try {
+      https.get(
+        url,
+        {
+          headers: {
+            'User-Agent':
+              'Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1 Edg/102.0.5005.124'
+          }
+        },
+        res => {
+          if (res.statusCode === 200) {
+            //使用数据流写入
+            const file = fs.createWriteStream(filepath)
+            file.on('finish', () => {
+              file.close()
+              resolve()
+            })
+            file.on('error', reject)
+            res.pipe(file)
+          } else {
+            res.resume()
+            console.log(`Request Failed With a Status Code: ${res.statusCode}`)
+            reject()
+          }
+        }
+      )
+    } catch (err) {
+      console.log(err)
+      reject()
+    }
+  })
+}
+
+module.exports.proxy = async (req, res, next) => {
+  const { id, x, y, z, key = '6Ray8MH3R31aT2AbOWXy', v = 'DEFAULE' } = req.params
+  const uri = `https://api.maptiler.com/tiles/${id}/${z}/${x}/${y}?key=${key}`
+  const src = path.resolve(`./data/cache/maptiler/${v}/${id}/${z}/${x}/${y}`)
+
+  try {
+    if (!fs.existsSync(src)) {
+      await downloadFile(uri, src)
+    }
+  } catch (_) {
+    try {
+      if (fs.existsSync(src)) {
+        fs.rmSync(src)
+      }
+    } catch (__) {}
+  }
+
+  res.sendFile(src, err => {
+    if (err) return next(err)
+  })
+}

app/services/maptiler/index.js

+const router = require('express').Router()
+const maptiler = require('./controller')
+
+// "https://api.maptiler.com/tiles/v4/{z}/{x}/{y}.pbf?key=6Ray8MH3R31aT2AbOWXy"
+// "https://api.maptiler.com/tiles/satellite-v2/{z}/{x}/{y}.jpg?key=6Ray8MH3R31aT2AbOWXy"
+
+router.get('/maptiler/tiles/:id/:z/:y/:x', maptiler.proxy)
+
+module.exports = router