Link hashtag bug (#121)

* link + hashtag bug

* remove printlns

* tidy up some duplicated code

internal/text/markdown.go

@@ -19,9 +19,6 @@
 package text
 
 import (
-	"fmt"
-	"strings"
-
 	"github.com/russross/blackfriday/v2"
 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
 )
@@ -39,20 +36,11 @@ func (f *formatter) FromMarkdown(md string, mentions []*gtsmodel.Mention, tags [
 	// do the markdown parsing *first*
 	content = string(blackfriday.Run([]byte(content), blackfriday.WithExtensions(bfExtensions)))
 
-	// format mentions nicely
-	for _, menchie := range mentions {
-		targetAccount := &gtsmodel.Account{}
-		if err := f.db.GetByID(menchie.TargetAccountID, targetAccount); err == nil {
-			mentionContent := fmt.Sprintf(`<span class="h-card"><a href="%s" class="u-url mention">@<span>%s</span></a></span>`, targetAccount.URL, targetAccount.Username)
-			content = strings.ReplaceAll(content, menchie.NameString, mentionContent)
-		}
-	}
-
 	// format tags nicely
-	for _, tag := range tags {
-		tagContent := fmt.Sprintf(`<a href="%s" class="mention hashtag" rel="tag">#<span>%s</span></a>`, tag.URL, tag.Name)
-		content = strings.ReplaceAll(content, fmt.Sprintf("#%s", tag.Name), tagContent)
-	}
+	content = f.ReplaceTags(content, tags)
+
+	// format mentions nicely
+	content = f.ReplaceMentions(content, mentions)
 
 	return postformat(content)
 }