implements list command

internal/database/feed.go

@@ -1,16 +1,24 @@
 package database
 
-import "time"
+import (
+	"time"
+)
 
 type FeedType string
 
 type Feed struct {
+	ID           int64
 	Name         string
 	Url          string
-	AddedAt      *time.Time
+	CreatedAt    *time.Time
 	LastSyncedAt *time.Time
 }
 
+type FeedWithArticleCount struct {
+	Feed
+	ArticleCount int
+}
+
 func (f Feed) Insert() (int64, error) {
 	result, err := db.Exec("INSERT INTO feed (name, url) VALUES (?,?)", f.Name, f.Url)
 
@@ -26,3 +34,28 @@ func (f Feed) Insert() (int64, error) {
 
 	return id, nil
 }
+
+func FindAllFeedsWithArticleCount() (*[]FeedWithArticleCount, error) {
+	rows, err := db.Query("SELECT f.id, f.name, f.url, f.createdAt, f.lastSyncedAt, COUNT(a.id) FROM feed as f LEFT JOIN article as a ON a.feedId = f.id;")
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var feeds []FeedWithArticleCount
+
+	for rows.Next() {
+		var feed FeedWithArticleCount
+		err := rows.Scan(&feed.ID, &feed.Name, &feed.Url, &feed.CreatedAt, &feed.LastSyncedAt, &feed.ArticleCount)
+		if err != nil {
+			return nil, err
+		}
+		feeds = append(feeds, feed)
+	}
+
+	if err = rows.Err(); err != nil {
+		return nil, err
+	}
+
+	return &feeds, nil
+}