restructuring

internal/model/article.go

@@ -0,0 +1,54 @@
+package model
+
+import (
+    "time"
+    "crypto/sha256"
+    "encoding/hex"
+)
+
+
+// TODO docstring
+type Article struct {
+    SourceUrl   string
+    PublishDate time.Time
+    FetchDate   time.Time
+    Title       string
+    Content     string
+    Author      string
+}
+
+// TODO docstring
+type ArticleViewModel struct {
+    Title       string
+    Author      string
+    PublishDate string
+    SourceUrl   string
+    Summary     string
+}
+
+
+// TODO docstring
+func (a *Article) ViewModel() *ArticleViewModel {
+    summary := a.Content
+    if len(a.Content) > 300 {
+        summary = summary[:300]
+    }
+
+    return &ArticleViewModel{
+        Title: a.Title,
+        Author: a.Author,
+        PublishDate: a.PublishDate.Local().Format("02.01.2006 03:04"),
+        SourceUrl: a.SourceUrl,
+        Summary: summary,
+    }
+}
+
+
+// --- implement IIdentifiable interface ---
+
+// Generates a hash based on the source url of the article. Can be used to
+// identify the article.
+func (article *Article) Id() string {
+    hash := sha256.Sum256([]byte(article.SourceUrl))
+    return hex.EncodeToString(hash[:])
+}