From f5dd135ed8b59e278787f1ec092559ad3500a3e0 Mon Sep 17 00:00:00 2001
From: Omar Roth <omarroth@hotmail.com>
Date: Sun, 14 Apr 2019 19:04:10 -0500
Subject: [PATCH] Add 'view as playlist' option to trending page

---
 locales/ar.json                  |  1 +
 locales/de.json                  |  1 +
 locales/en-US.json               |  3 ++-
 locales/es.json                  |  1 +
 locales/eu.json                  |  1 +
 locales/fr.json                  |  1 +
 locales/it.json                  |  1 +
 locales/nb_NO.json               |  1 +
 locales/nl.json                  |  1 +
 locales/pl.json                  |  1 +
 locales/ru.json                  |  1 +
 src/invidious.cr                 |  4 ++--
 src/invidious/trending.cr        | 38 +++++++++++++++++++++++++++++++-
 src/invidious/views/trending.ecr |  7 +++---
 14 files changed, 55 insertions(+), 7 deletions(-)

diff --git a/locales/ar.json b/locales/ar.json
index 907479822..572ea9045 100644
--- a/locales/ar.json
+++ b/locales/ar.json
@@ -278,6 +278,7 @@
   "About": "حول",
   "Rating: ": "التقييم",
   "Language: ": "اللغة",
+  "View as playlist": "",
   "Default": "الكل",
   "Music": "الاغانى",
   "Gaming": "الألعاب",
diff --git a/locales/de.json b/locales/de.json
index 275e44e33..440f75e9a 100644
--- a/locales/de.json
+++ b/locales/de.json
@@ -278,6 +278,7 @@
   "About": "Über",
   "Rating: ": "Bewertung: ",
   "Language: ": "Sprache: ",
+  "View as playlist": "",
   "Default": "",
   "Music": "",
   "Gaming": "",
diff --git a/locales/en-US.json b/locales/en-US.json
index 7f5e3d3ba..88c035b55 100644
--- a/locales/en-US.json
+++ b/locales/en-US.json
@@ -112,7 +112,7 @@
   "Whitelisted regions: ": "Whitelisted regions: ",
   "Blacklisted regions: ": "Blacklisted regions: ",
   "Shared `x`": "Shared `x`",
-  "`x` views": "",
+  "`x` views": "`x` views",
   "Premieres in `x`": "Premieres in `x`",
   "Hi! Looks like you have JavaScript disabled. Click here to view comments, keep in mind it may take a bit longer to load.": "Hi! Looks like you have JavaScript disabled. Click here to view comments, keep in mind it may take a bit longer to load.",
   "View YouTube comments": "View YouTube comments",
@@ -276,6 +276,7 @@
   "About": "About",
   "Rating: ": "Rating: ",
   "Language: ": "Language: ",
+  "View as playlist": "View as playlist",
   "Default": "Default",
   "Music": "Music",
   "Gaming": "Gaming",
diff --git a/locales/es.json b/locales/es.json
index 6c9cc7d58..9cf54fe16 100644
--- a/locales/es.json
+++ b/locales/es.json
@@ -276,6 +276,7 @@
   "About": "Acerca de",
   "Rating: ": "Valoración: ",
   "Language: ": "Idioma: ",
+  "View as playlist": "",
   "Default": "Por defecto",
   "Music": "Música",
   "Gaming": "Videojuegos",
diff --git a/locales/eu.json b/locales/eu.json
index 5f9d5c09a..ddd00a4c5 100644
--- a/locales/eu.json
+++ b/locales/eu.json
@@ -276,6 +276,7 @@
   "About": "",
   "Rating: ": "",
   "Language: ": "",
+  "View as playlist": "",
   "Default": "",
   "Music": "",
   "Gaming": "",
diff --git a/locales/fr.json b/locales/fr.json
index 162ebe389..fec1053e4 100644
--- a/locales/fr.json
+++ b/locales/fr.json
@@ -276,6 +276,7 @@
   "About": "A Propos",
   "Rating: ": "Évaluation : ",
   "Language: ": "Langue : ",
+  "View as playlist": "",
   "Default": "Défaut",
   "Music": "Musique",
   "Gaming": "Jeux Vidéo",
diff --git a/locales/it.json b/locales/it.json
index d67df287e..9bd72ea5a 100644
--- a/locales/it.json
+++ b/locales/it.json
@@ -276,6 +276,7 @@
   "About": "A proposito",
   "Rating: ": "Punteggio: ",
   "Language: ": "Lingua: ",
+  "View as playlist": "",
   "Default": "Predefinito",
   "Music": "Musica",
   "Gaming": "Videogiochi",
diff --git a/locales/nb_NO.json b/locales/nb_NO.json
index 926f3f91a..6d032e6f0 100644
--- a/locales/nb_NO.json
+++ b/locales/nb_NO.json
@@ -276,6 +276,7 @@
   "About": "Om",
   "Rating: ": "Vurdering: ",
   "Language: ": "Språk: ",
+  "View as playlist": "",
   "Default": "Forvalg",
   "Music": "Musikk",
   "Gaming": "Spill",
diff --git a/locales/nl.json b/locales/nl.json
index 4129f378f..69c43b5b9 100644
--- a/locales/nl.json
+++ b/locales/nl.json
@@ -276,6 +276,7 @@
   "About": "",
   "Rating: ": "",
   "Language: ": "",
+  "View as playlist": "",
   "Default": "",
   "Music": "",
   "Gaming": "",
diff --git a/locales/pl.json b/locales/pl.json
index ee8832591..901892eb5 100644
--- a/locales/pl.json
+++ b/locales/pl.json
@@ -276,6 +276,7 @@
   "About": "Informacje",
   "Rating: ": "Ocena: ",
   "Language: ": "Język: ",
+  "View as playlist": "",
   "Default": "Domyślnie",
   "Music": "Muzyka",
   "Gaming": "Gry",
diff --git a/locales/ru.json b/locales/ru.json
index 811c01de1..a287cb80e 100644
--- a/locales/ru.json
+++ b/locales/ru.json
@@ -278,6 +278,7 @@
   "About": "О сайте",
   "Rating: ": "Рейтинг: ",
   "Language: ": "Язык: ",
+  "View as playlist": "",
   "Default": "По-умолчанию",
   "Music": "Музыка",
   "Gaming": "Игры",
diff --git a/src/invidious.cr b/src/invidious.cr
index 6e4ee8915..f0d7fbf1b 100644
--- a/src/invidious.cr
+++ b/src/invidious.cr
@@ -1955,7 +1955,7 @@ get "/feed/trending" do |env|
   region ||= "US"
 
   begin
-    trending = fetch_trending(trending_type, proxies, region, locale)
+    trending, plid = fetch_trending(trending_type, proxies, region, locale)
   rescue ex
     error_message = "#{ex.message}"
     next templated "error"
@@ -3205,7 +3205,7 @@ get "/api/v1/trending" do |env|
   trending_type = env.params.query["type"]?
 
   begin
-    trending = fetch_trending(trending_type, proxies, region, locale)
+    trending, plid = fetch_trending(trending_type, proxies, region, locale)
   rescue ex
     error_message = {"error" => ex.message}.to_json
     env.response.status_code = 500
diff --git a/src/invidious/trending.cr b/src/invidious/trending.cr
index 15630721a..8e55f2075 100644
--- a/src/invidious/trending.cr
+++ b/src/invidious/trending.cr
@@ -7,6 +7,8 @@ def fetch_trending(trending_type, proxies, region, locale)
   region = region.upcase
 
   trending = ""
+  plid = nil
+
   if trending_type && trending_type != "Default"
     trending_type = trending_type.downcase.capitalize
 
@@ -23,9 +25,11 @@ def fetch_trending(trending_type, proxies, region, locale)
     url = tabs.select { |tab| tab["channelListSubMenuAvatarRenderer"]["title"]["simpleText"] == trending_type }[0]?
 
     if url
+      url["channelListSubMenuAvatarRenderer"]["navigationEndpoint"]["commandMetadata"]["webCommandMetadata"]["url"]
       url = url["channelListSubMenuAvatarRenderer"]["navigationEndpoint"]["commandMetadata"]["webCommandMetadata"]["url"].as_s
       url += "&disable_polymer=1&gl=#{region}&hl=en"
       trending = client.get(url).body
+      plid = extract_plid(url)
     else
       trending = client.get("/feed/trending?gl=#{region}&hl=en&disable_polymer=1").body
     end
@@ -37,5 +41,37 @@ def fetch_trending(trending_type, proxies, region, locale)
   nodeset = trending.xpath_nodes(%q(//ul/li[@class="expanded-shelf-content-item-wrapper"]))
   trending = extract_videos(nodeset)
 
-  return trending
+  return {trending, plid}
+end
+
+def extract_plid(url)
+  wrapper = HTTP::Params.parse(URI.parse(url).query.not_nil!)["bp"]
+
+  wrapper = URI.unescape(wrapper)
+  wrapper = Base64.decode(wrapper)
+
+  # 0xe2 0x02 0x2e
+  wrapper += 3
+
+  # 0x0a
+  wrapper += 1
+
+  # Looks like "/m/[a-z0-9]{5}", not sure what it does here
+
+  item_size = wrapper[0]
+  wrapper += 1
+  item = wrapper[0, item_size]
+  wrapper += item.size
+
+  # 0x12
+  wrapper += 1
+
+  plid_size = wrapper[0]
+  wrapper += 1
+  plid = wrapper[0, plid_size]
+  wrapper += plid.size
+
+  plid = String.new(plid)
+
+  return plid
 end
diff --git a/src/invidious/views/trending.ecr b/src/invidious/views/trending.ecr
index efd9999ac..d6c25266a 100644
--- a/src/invidious/views/trending.ecr
+++ b/src/invidious/views/trending.ecr
@@ -6,9 +6,10 @@
 <%= rendered "components/feed_menu" %>
 
 <div class="pure-g h-box">
-    <div class="pure-u-2-3">
-        <form class="pure-form pure-form-aligned" action="/feed/trending" method="get">
-        </form>
+    <div style="align-self:flex-end" class="pure-u-2-3">
+        <% if plid %>
+        <a href="/playlist?list=<%= plid %>"><%= translate(locale, "View as playlist") %></a>
+        <% end %>
     </div>
     <div class="pure-u-1-3">
         <div class="pure-g" style="text-align:right;">