Updated image downloader

At the expense of making database calls, the image downloader now only attempts to download images that will exist for the specific object based on how many uncaps it has.

lib/tasks/download_images.rake

@@ -49,18 +49,16 @@ namespace :granblue do
   end
 
   def download_images(url, size, path)
-    begin
-      download = URI.parse(url).open
-      download_URI = "#{path}/#{download.base_uri.to_s.split('/')[-1]}"
-      if File.exist?(download_URI)
-        puts "\tSkipping #{size}\t#{url}"
-      else
-        puts "\tDownloading #{size}\t#{url}..."
-        IO.copy_stream(download, "#{path}/#{download.base_uri.to_s.split('/')[-1]}")
-      end
-    rescue OpenURI::HTTPError
-      puts "\t404 returned\t#{url}"
+    download = URI.parse(url).open
+    download_URI = "#{path}/#{download.base_uri.to_s.split('/')[-1]}"
+    if File.exist?(download_URI)
+      puts "\tSkipping #{size}\t#{url}"
+    else
+      puts "\tDownloading #{size}\t#{url}..."
+      IO.copy_stream(download, "#{path}/#{download.base_uri.to_s.split('/')[-1]}")
     end
+  rescue OpenURI::HTTPError
+    puts "\t404 returned\t#{url}"
   end
 
   def download_chara_images(id)
@@ -118,17 +116,34 @@ namespace :granblue do
 
     list.each do |id|
       if object == 'character'
+        character = Character.find_by(granblue_id: id)
+        next unless character
+
         download_chara_images("#{id}_01")
         download_chara_images("#{id}_02")
-        download_chara_images("#{id}_03")
-        download_chara_images("#{id}_04")
+        download_chara_images("#{id}_03") if character.flb
+        download_chara_images("#{id}_04") if character.ulb
       elsif object == 'weapon'
+        weapon = Weapon.find_by(granblue_id: id)
+        next unless weapon
+
         download_weapon_images(id)
+
+        if weapon.transcendence
+          download_weapon_images("#{id}_02")
+          download_weapon_images("#{id}_03")
+        end
       elsif object == 'summon'
+        summon = Summon.find_by(granblue_id: id)
+        next unless summon
+
         download_summon_images("#{id}")
-        download_summon_images("#{id}_02")
-        download_summon_images("#{id}_03")
-        download_summon_images("#{id}_04")
+        download_summon_images("#{id}_02") if summon.ulb
+
+        if summon.transcendence
+          download_summon_images("#{id}_03")
+          download_summon_images("#{id}_04")
+        end
       end
     end
   end