feat: better flags

pkg/invoice/issue/issue.go

@@ -32,7 +32,11 @@ func FromGiteas(is []*gitea.Issue, mindur time.Duration) []Issue {
 func FromGitea(i gitea.Issue) Issue {
 	issue := Issue{Issue: i}
 
-	issue.Duration, _ = ExtractDuration(i.Body)
+	var err error
+	issue.Duration, err = ExtractDuration(i.Body)
+	if err != nil {
+		issue.Duration = time.Second * 0
+	}
 
 	return issue
 }
@@ -43,7 +47,7 @@ func ExtractDuration(text string) (duration time.Duration, err error) {
 	block := reBlock.FindStringSubmatch(text)
 	if len(block) < 2 {
 		err = fmt.Errorf("no info block found")
-		return
+		return duration, err
 	}
 
 	// Now extract the duration line from inside that block
@@ -51,7 +55,7 @@ func ExtractDuration(text string) (duration time.Duration, err error) {
 	match := reDuration.FindStringSubmatch(block[1])
 	if len(match) < 2 {
 		err = fmt.Errorf("no duration found inside info block")
-		return
+		return duration, err
 	}
 	dur := strings.TrimSpace(match[1])
 	dur = strings.ReplaceAll(dur, "min", "m")