feat: move remaining go scripts to main executable

scripts/genid/main.go

@@ -1,11 +1,45 @@
-package main
+package genid
 
 import (
 	"fmt"
+	"time"
 
 	"github.com/rs/xid"
+	"github.com/urfave/cli/v2"
 )
 
-func main() {
-	fmt.Println(xid.New())
+var Command = &cli.Command{
+	Name:  "id",
+	Usage: "Generate a time-based ID",
+	Flags: []cli.Flag{
+		&cli.TimestampFlag{
+			Name:    "timestamp",
+			Aliases: []string{"T"},
+			Usage:   "The timestamp to generate an ID for (format: 2006-01-02T15:04:05)",
+			Layout:  "2006-01-02T15:04:05",
+		},
+		&cli.UintFlag{
+			Name:    "days-ago",
+			Aliases: []string{"D"},
+			Usage:   "The number of days ago to generate an ID for",
+			Value:   0,
+		},
+	},
+	Action: run,
+}
+
+func run(c *cli.Context) error {
+	if t := c.Timestamp("timestamp"); t != nil {
+		fmt.Printf("ID for %v: %v\n", t.Format(time.RFC1123), xid.NewWithTime(*t))
+		return nil
+	}
+	if daysAgo := c.Uint("days-ago"); daysAgo != 0 {
+		t := time.Now().Add(time.Duration(-daysAgo) * 24 * time.Hour)
+
+		fmt.Printf("ID for %v days ago: %v\n", daysAgo, xid.NewWithTime(t))
+		return nil
+	}
+
+	fmt.Printf("ID for now: %v\n", xid.New())
+	return nil
 }