fix "torrent file button grayed out for old torrents (anicache.com link)" (#1542)

* add strfind function & check for pantsu.cat when checking torrent file exists

* test

* Update listing.jet.html

* Update view.jet.html

* Update torrents.jet.html

* Update template_functions_test.go

templates/site/torrents/listing.jet.html

@@ -83,7 +83,7 @@
           <a href="{{.Magnet}}" title="{{  T("magnet_link") }}">
             <div class="icon-magnet"></div>
           </a>
-          <a href="{{.TorrentLink}}" title="{{  T("torrent_file") }}" {{if !torrentFileExists(.Hash)}}class="hidden"{{end}}>
+          <a href="{{.TorrentLink}}" title="{{  T("torrent_file") }}" {{if !torrentFileExists(.Hash, .TorrentLink)}}class="hidden"{{end}}>
             <div class="icon-floppy"></div>
           </a>
         </td>

templates/site/torrents/view.jet.html

@@ -133,7 +133,7 @@
     <a href="{{Torrent.Magnet}}" class="form-input btn-green download" style="float:left;height: auto;margin-right: 0.5em;">
       <div class="icon-magnet"></div> {{ T("magnet_link")}}
     </a>
-    <a href="{{Torrent.TorrentLink}}" class="form-input download{{ if !torrentFileExists(Torrent.Hash)}} hidden{{end}}" style="float:left;height: auto;">
+    <a href="{{Torrent.TorrentLink}}" class="form-input download{{ if !torrentFileExists(Torrent.Hash, Torrent.TorrentLink)}} hidden{{end}}" style="float:left;height: auto;">
       <div class="icon-floppy"></div> {{ T("torrent_file")}}
     </a>
     {{ if User.ID > 0}}

templates/site/user/torrents.jet.html

@@ -36,7 +36,7 @@
       <a href="{{torrent.Magnet}}" title="{{  T("magnet_link") }}">
         <div class="icon-magnet"></div>
       </a>
-      <a href="{{torrent.TorrentLink}}" title="{{  T("torrent_file") }}" {{if !torrentFileExists(torrent.Hash)}}class="hidden"{{end}}>
+      <a href="{{torrent.TorrentLink}}" title="{{  T("torrent_file") }}" {{if !torrentFileExists(torrent.Hash, torrent.TorrentLink)}}class="hidden"{{end}}>
         <div class="icon-floppy"></div>
       </a>
     </td>

templates/template_functions.go

@@ -50,6 +50,7 @@ func templateFunctions(vars jet.VarMap) jet.VarMap {
 	vars.Set("genActivityContent", genActivityContent)
 	vars.Set("contains", contains)
 	vars.Set("kilo_strcmp", kilo_strcmp)
+	vars.Set("kilo_strfind", kilo_strfind)
 	return vars
 }
 func getRawQuery(currentURL *url.URL) string {
@@ -296,8 +297,10 @@ func contains(arr interface{}, comp string) bool {
 	return false
 }
 
-func torrentFileExists(hash string) bool {
- 
+func torrentFileExists(hash string, TorrentLink string) bool {
+	if(len(TorrentLink) > 30 && !kilo_strfind(TorrentLink, ".pantsu.cat", 8)) {
+		return true
+	}
 	Openfile, err := os.Open(fmt.Sprintf("%s%c%s.torrent", config.Get().Torrents.FileStorage, os.PathSeparator, hash))
 	if err != nil {
 		return false
@@ -329,3 +332,17 @@ func kilo_strcmp(str1 string, str2 string, end int, start int) bool {
 	
 	return strings.Compare(str1[start:end], str2[start:end]) == 0
 }
+
+func kilo_strfind(str1 string, searchfor string, start int) bool {
+	//Search a string inside another with start parameter
+	//start parameter indicates where we start searching
+	
+	len1 := len(str1)
+	
+	if start >= len1 {
+		return false
+	}
+	
+	
+	return strings.Contains(str1[start:len1], searchfor)
+}

templates/template_functions_test.go

@@ -599,7 +599,7 @@ func testTorrentFileExists(t *testing.T) {
 		},
 	}
 	for _, test := range tests {
-		value := torrentFileExists(test.hash)
+		value := torrentFileExists(test.hash, "")
 		if value != test.Expected {
 			t.Errorf("Unexpected value from the function TorrentFileExists, got  '%t', wanted '%t' for '%s'", value, test.Expected, test.hash)
 		}
@@ -630,6 +630,31 @@ func Testkilo_strcmp(t *testing.T) {
  		}
 	}
  }
+ 
+ func Testkilo_strfind(t *testing.T) {
+ 	var tests = []struct {
+ 		TestString  string
+ 		TestString2 string
+ 		Expected bool
+ 	}{
+ 		{
+ 			TestString:  "kilo",
+ 			TestString2: "kilo",
+			Expected: true,
+ 		},
+ 		{
+ 		TestString:  "kilo",
+ 			TestString2: "loki", // Clearly not the same level
+ 			Expected: false,
+ 		},
+ 	}
+ 	for _, test := range tests {
+ 		value := kilo_strfind(test.TestString, test.TestString2, 0)
+ 		if value != test.Expected {
+ 			t.Errorf("Unexpected value from the function languageName, got '%t', wanted '%t'", value, test.Expected, test.TestString, test.TestString)
+ 		}
+	}
+ }
 
 func mockupTemplateT(t *testing.T) publicSettings.TemplateTfunc {
 	conf := config.Get().I18n