geolocation api rate-limit: improve the delay mechanism to be sure to don't hit provider more than 1 time/s, add memory-cache to save response data.

server/api/controller/place.js

@@ -7,9 +7,6 @@ const { version } = require('../../../package.json')
 
 const log = require('../../log')
 const { Op, where, col, fn, cast } = require('sequelize')
-const NOMINATIM_URL = 'https://nominatim.openstreetmap.org/search'
-const PHOTON_URL = 'https://photon.komoot.io/api/'
-const axios = require('axios')
 
 module.exports = {
 
@@ -75,45 +72,6 @@ module.exports = {
 
     // TOFIX: don't know why limit does not work
     return res.json(places.slice(0, 10))
-  },
-
-  async _nominatim (req, res) {
-    const details = req.params.place_details
-    const countrycodes = res.locals.settings.geocoding_countrycodes || []
-    const geocoding_provider = res.locals.settings.geocoding_provider || NOMINATIM_URL
-    // ?limit=3&format=json&namedetails=1&addressdetails=1&q=
-
-    const ret = await axios.get(`${geocoding_provider}`, {
-      params: {
-        countrycodes: countrycodes.join(','),
-        q: details,
-        limit: 3,
-        format: 'json',
-        addressdetails: 1,
-        namedetails: 1,
-      },
-      headers: { 'User-Agent': `gancio ${version}` }
-    })
-
-    return res.json(ret.data)
-
-  },
-
-  async _photon (req, res) {
-    const details = req.params.place_details
-    const geocoding_provider = res.locals.settings.geocoding_provider || PHOTON_URL
-
-    const ret = await axios.get(`${geocoding_provider}`, {
-      params: {
-        q: details,
-        limit: 3,
-      },
-      headers: { 'User-Agent': `gancio ${version}` }
-    })
-
-    // console.log(ret)
-    return res.json(ret.data)
-
-  },
+  }
 
 }