Rework fixers to decide what to use and move dehtmlify process in them.

Added githubv fixer.

fixers/fixers.go

@@ -1,17 +1,20 @@
 package fixers
 
-type fixerFunc func(title, body string) (string, string)
+import "github.com/mmcdole/gofeed"
+
+type fixerFunc func(feedItem *gofeed.Item) (string, string)
 
 var fixers = map[string]fixerFunc{
+	"github.com":     githubFixer,
 	"www.opennet.ru": opennetFixer,
 }
 
 // Fix fixes title and body depending on site parsed.
-func Fix(domain, title, body string) (string, string) {
+func Fix(domain string, feedItem *gofeed.Item) (string, string) {
 	fixer, found := fixers[domain]
 	if !found {
-		return title, body
+		return feedItem.Title, feedItem.Description
 	}
 
-	return fixer(title, body)
+	return fixer(feedItem)
 }

fixers/github_com.go

@@ -0,0 +1,21 @@
+package fixers
+
+import (
+	"log/slog"
+
+	"github.com/mmcdole/gofeed"
+	"github.com/prodigeris/html2text"
+)
+
+func githubFixer(item *gofeed.Item) (string, string) {
+	plainTextBody, err := html2text.FromString(item.Content, html2text.Options{
+		PrettyTables: true,
+	})
+	if err != nil {
+		slog.Error("Failed to de-HTMLify github body!", "error", err.Error())
+
+		return item.Title, item.Content
+	}
+
+	return item.Title, plainTextBody
+}

fixers/opennet_ru.go

@@ -1,11 +1,26 @@
 package fixers
 
-import "strings"
+import (
+	"log/slog"
+	"strings"
+
+	"github.com/mmcdole/gofeed"
+	"github.com/prodigeris/html2text"
+)
+
+func opennetFixer(item *gofeed.Item) (string, string) {
+	oldBody, err := html2text.FromString(item.Description, html2text.Options{
+		PrettyTables: true,
+	})
+	if err != nil {
+		slog.Error("Failed to de-HTMLify opennet body!", "error", err.Error())
+
+		return item.Title, item.Description
+	}
 
-func opennetFixer(title, body string) (string, string) {
 	newBody := &strings.Builder{}
 
-	for line := range strings.Lines(body) {
+	for line := range strings.Lines(oldBody) {
 		if strings.HasPrefix(line, "Источник") {
 			continue
 		}
@@ -13,5 +28,5 @@ func opennetFixer(title, body string) (string, string) {
 		_, _ = newBody.WriteString(line)
 	}
 
-	return title, newBody.String()
+	return item.Title, newBody.String()
 }