Add flags to control output

Signed-off-by: Luiz Carvalho <[email protected]>

app/app.go

@@ -6,7 +6,7 @@ import (
 	"time"
 )
 
-func Character(today time.Time, config Config) (string, error) {
+func Character(today time.Time, config Config) (string, string, error) {
 
 	for _, rule := range config.Rules {
 		var end time.Time
@@ -18,13 +18,13 @@ func Character(today time.Time, config Config) (string, error) {
 			weekday := time.Weekday(rule.Weekday)
 			end = endOfNthWeekdayOfMonth(today, month, rule.Week, weekday)
 		} else {
-			return "", errors.New(fmt.Sprint(rule.Name, " is not a valid rule"))
+			return "", "", errors.New(fmt.Sprint(rule.Name, " is not a valid rule"))
 		}
 		if inSeason(today, end, rule.Span) {
-			return rule.Emoji, nil
+			return rule.Emoji, rule.Name, nil
 		}
 	}
-	return config.Default, nil
+	return config.Default, "(default)", nil
 }
 
 func inSeason(today time.Time, end time.Time, spanDays int) bool {

main.go

@@ -1,25 +1,51 @@
 package main
 
 import (
+	"flag"
 	"fmt"
 	"log"
 	"os"
+	"strings"
 	"time"
 
 	"github.com/lcarva/festoji/app"
 )
 
+var (
+	n    = flag.Int("n", 1, "number of characters/days to display")
+	day  = flag.Bool("day", false, "display day for the character")
+	rule = flag.Bool("rule", false, "display matching rule for the character")
+)
+
 func main() {
+	flag.Parse()
+
 	userConfigPath := os.ExpandEnv("${HOME}/.festoji.yaml")
 	config, errConfig := app.NewConfig(userConfigPath)
 	if errConfig != nil {
 		log.Fatal("Unable to load configuration: ", errConfig)
 		return
 	}
-	character, errChar := app.Character(time.Now(), config)
-	if errChar != nil {
-		log.Fatal("Unable to get character: ", errChar)
-		return
+
+	t := time.Now()
+	for i := 0; i < *n; i++ {
+		character, ruleName, errChar := app.Character(t, config)
+		if errChar != nil {
+			log.Fatal("Unable to get character: ", errChar)
+			return
+		}
+
+		var parts []string
+		if *day {
+			parts = append(parts, t.Format("02/Jan/2006"))
+		}
+		parts = append(parts, character)
+		if *rule {
+			parts = append(parts, ruleName)
+		}
+		fmt.Println(strings.Join(parts, " "))
+
+		t = t.Add(time.Hour * 24)
 	}
-	fmt.Println(character)
+
 }