add support for user created custom feeds #162

routes.js

@@ -1423,7 +1423,153 @@ module.exports = (app, redis, fetch, RedditAPI) => {
       }
     })
   })
-
+  
+  app.get('/user/:user/m/:custom_feed', (req, res, next) => {
+    res.redirect(`/u/${req.params.user}/m/${req.params.custom_feed}`)
+  })
+  
+  app.get('/u/:user/m/:custom_feed/:sort?', (req, res, next) => {
+    let user = req.params.user
+    let custom_feed = req.params.custom_feed
+    let subreddit = `u/${user}/m/${custom_feed}`
+    let sortby = req.params.sort
+    let past = req.query.t
+    let before = req.query.before
+    let after = req.query.after
+    let api_req = req.query.api
+    let api_type = req.query.type
+    let api_target = req.query.target
+    
+    if(req.query.hasOwnProperty('api'))
+      api_req = true
+    else
+      api_req = false
+      
+    let d = `&after=${after}`
+    if(before) {
+      d = `&before=${before}`
+    }
+    
+    if(!sortby) {
+      sortby = 'hot'
+    }
+    
+    if(!['new', 'rising', 'controversial', 'top', 'gilded', 'hot'].includes(sortby)) {
+      console.error(`Got invalid sort.`, req.originalUrl)
+      return res.redirect(`/u/${user}`)
+    }
+    
+    if(past) {
+      if(sortby === 'controversial' || sortby === 'top') {
+        if(!['hour', 'day', 'week', 'month', 'year', 'all'].includes(past)) {
+          console.error(`Got invalid past.`, req.originalUrl)
+          return res.redirect(`/u/${user}/${sortby}`)
+        }
+      } else {
+        past = undefined
+      }
+    } else {
+      if(sortby === 'controversial' || sortby === 'top') {
+        past = 'day'
+      }
+    }
+    
+    let key = `${user.toLowerCase()}:m:${custom_feed}:${after}:${before}:sort:${sortby}:past:${past}`
+    redis.get(key, (error, json) => {
+      if(error) {
+        console.error(`Error getting the ${user} custom_feed key from redis.`, error)
+        return res.render('index', { json: null, user_preferences: req.cookies })
+      }
+      if(json) {
+        console.log(`Got /u/${user} custom_feed key from redis.`);
+        (async () => {
+          if(api_req) {
+            return handleTedditApiSubreddit(json, req, res, 'redis', api_type, api_target, subreddit)
+          } else {
+            let processed_json = await processJsonSubreddit(json, 'redis', null, req.cookies)
+            if(!processed_json.error) {
+              return res.render('subreddit', {
+                json: processed_json,
+                subreddit: '../' + subreddit,
+                subreddit_about: null,
+                subreddit_front: (!before && !after) ? true : false,
+                sortby: sortby,
+                past: past,
+                user_preferences: req.cookies,
+                instance_nsfw_enabled: config.nsfw_enabled,
+                redis_key: key,
+                after: req.query.after,
+                before: req.query.before
+              })
+            } else {
+              return res.render('subreddit', {
+                json: null,
+                error: true,
+                data: processed_json,
+                user_preferences: req.cookies
+              })
+            }
+          }
+        })()
+      } else {
+        let url = ''
+        if(config.use_reddit_oauth)
+          url = `https://oauth.reddit.com/${subreddit}/${sortby}?api_type=json&count=25&g=GLOBAL&t=${past}${d}`
+        else
+          url = `https://reddit.com/${subreddit}/${sortby}.json?api_type=json&count=25&g=GLOBAL&t=${past}${d}`
+        fetch(encodeURI(url), redditApiGETHeaders())
+        .then(result => {
+          if(result.status === 200) {
+            result.json()
+            .then(json => {
+              redis.setex(key, config.setexs.subreddit, JSON.stringify(json), (error) => {
+                if(error) {
+                  console.error(`Error setting the ${subreddit} key to redis.`, error)
+                  return res.render('subreddit', { json: null, user_preferences: req.cookies })
+                } else {
+                  console.log(`Fetched the JSON from reddit.com/r/${subreddit}.`);
+                  (async () => {
+                    if(api_req) {
+                      return handleTedditApiSubreddit(json, req, res, 'from_online', api_type, api_target, subreddit)
+                    } else {
+                      let processed_json = await processJsonSubreddit(json, 'from_online', null, req.cookies)
+                      return res.render('subreddit', {
+                        json: processed_json,
+                        subreddit: '../' + subreddit,
+                        subreddit_about: null,
+                        subreddit_front: (!before && !after) ? true : false,
+                        sortby: sortby,
+                        past: past,
+                        user_preferences: req.cookies,
+                        instance_nsfw_enabled: config.nsfw_enabled,
+                        redis_key: key,
+                        after: req.query.after,
+                        before: req.query.before
+                      })
+                    }
+                  })()
+                }
+              })
+            })
+          } else {
+            if(result.status === 404) {
+              console.log('404 – Subreddit not found')
+            } else {
+              console.error(`Something went wrong while fetching data from Reddit. ${result.status} – ${result.statusText}`)
+              console.error(config.reddit_api_error_text)
+            }
+            return res.render('index', {
+              json: null,
+              http_status_code: result.status,
+              user_preferences: req.cookies
+            })
+          }
+        }).catch(error => {
+          console.error(`Error fetching the JSON file from reddit.com/${subreddit}.`, error)
+        })
+      }
+    })
+  })
 
   /**
   * POSTS