Freeview: Pull all channels from every region

this change builds one massive freeview TV guide for the entire uk, as it merges the guide for every region/transmitter group into one single guide, i have tried my best to remove duplicate channels from the guide, but, specifically with the bbc shifting some of their IDs for some regions, and 'that's tv' owning nearly all the local tv licences in the UK, it is impossible to remove all duplicates

sites/freeview.co.uk/freeview.co.uk.config.js

@@ -36,18 +36,25 @@ module.exports = {
     return programs
   },
   async channels() {
-    const networkId = '64257' // Great London
     const startTimestamp = dayjs.utc().startOf('d').unix()
-    const data = await axios
-      .get(`https://www.freeview.co.uk/api/tv-guide?nid=${networkId}&start=${startTimestamp}`)
-      .then(r => r.data)
-      .catch(console.log)
+    let channels = []
+    for (let networkId = 64257; networkId <= 64425; networkId++) { // loop through all valid networkIds starting from 64257 (Greater London) to 64425 (Belfast) to ensure we can get all the channels available on freeview
+      console.log(networkId)
+      const data = await axios
+        .get(`https://www.freeview.co.uk/api/tv-guide?nid=${networkId}&start=${startTimestamp}`)
+        .then(r => r.data)
+        .catch(console.log)
 
-    return data.data.programs.map(item => ({
-      lang: 'en',
-      site_id: `${networkId}#${item.service_id}`,
-      name: item.title
-    }))
+      channels = channels.concat(data.data.programs.map(item => ({
+        lang: 'en',
+        site_id: `${networkId}#${item.service_id}`,
+        name: item.title
+      })))
+    }
+    const uniqueServiceIds = Array.from(new Set(channels.map(c => c.site_id.split('#')[1])))
+    return uniqueServiceIds.map(serviceId => {
+      return channels.find(c => c.site_id.split('#')[1] === serviceId)
+    })
   }
 }
 
@@ -85,4 +92,4 @@ async function loadProgramDetails(item) {
     })
     .catch(console.log)
   return data || {}
-}
+}