Feat/insee code

src/requests/insee.js

 // @ts-check
+const { default: axios } = require('axios')
 const { log } = require('cozy-konnector-libs')
 
+const API_URL = 'https://apicarto.ign.fr/api'
+
 /**
  * Return inseeCode given a postalCode
  * @param {string} postalCode
- * @return {Promise<string>} inseeCode
+ * @param {string} [city]
+ * @return {Promise<string | null>} inseeCode
  */
 async function getInseeCode(postalCode, city) {
-  //TODO: Implement
-  log('info', `Query getInseeCode for postalCode ${postalCode} / ${city}`)
-  throw new Error('Function not implemented.')
+  try {
+    const response = await axios.get(
+      `${API_URL}/codes-postaux/communes/${postalCode}`
+    )
+    log('info', `Query getInseeCode for postalCode ${postalCode} / ${city}`)
+
+    if (response.data.length === 1) {
+      return response.data[0].codeCommune
+    } else {
+      if (!city) return null
+
+      const filteredResponse = response.data.filter(
+        town => town.nomCommune.toLowerCase() === city.toLowerCase()
+      )
+      return filteredResponse[0].codeCommune
+    }
+  } catch (error) {
+    return null
+  }
 }
 
 module.exports = {