Honestly why is even the flag package but whatever

README.org

@@ -2,8 +2,6 @@
 
 This is a helper program to add and remove torrents from a transmission-daemon instance.
 
-WIP: Other people should probably not use this yet, as there are still some rough edges I need to smooth out with regard to command-line argument handling and removing torrents functionality.
-
 To use, make sure `TRANSMISSION_RPC_URL` is exported in the shell:
 #+begin_src shell
 export TRANSMISSION_RPC_URL=10.0.0.42
@@ -27,4 +25,7 @@ go-torrent-helper add -distro rocky -relver 9.2
 
 # Remove older Rocky Linux torrents
 go-torrent-helper remove -distro rocky -relver 8.1
+
+# If not -relver flag is supplied for the remove subcommand, remove all torrents for given distro
+go-torrent-helper remove -distro debian
 #+end_src

command/main.go

@@ -43,6 +43,16 @@ func NewRemoveCmd() *RemoveCmd {
 	return removeCmd
 }
 
+func NewListCmd() *ListCmd {
+	listCmd := &ListCmd{
+		fs: flag.NewFlagSet("list", flag.ExitOnError),
+	}
+
+	listCmd.fs.Bool("list", false, "List supported distributions")
+
+	return listCmd
+}
+
 type AddCmd struct {
 	fs *flag.FlagSet
 
@@ -57,6 +67,10 @@ type RemoveCmd struct {
 	relver string
 }
 
+type ListCmd struct {
+	fs *flag.FlagSet
+}
+
 func (a *AddCmd) Name() string {
 	return a.fs.Name()
 }
@@ -65,6 +79,10 @@ func (r *RemoveCmd) Name() string {
 	return r.fs.Name()
 }
 
+func (l *ListCmd) Name() string {
+	return l.fs.Name()
+}
+
 func (a *AddCmd) Init(args []string) error {
 	return a.fs.Parse(args)
 }
@@ -73,6 +91,10 @@ func (r *RemoveCmd) Init(args []string) error {
 	return r.fs.Parse(args)
 }
 
+func (l *ListCmd) Init(args []string) error {
+	return l.fs.Parse(args)
+}
+
 func (a *AddCmd) Run(d Distro) error {
 	client, err := transmissionrpc.New(os.Getenv("TRANSMISSION_RPC_URL"), "", "", nil)
 	if err != nil {
@@ -99,6 +121,25 @@ func (r *RemoveCmd) Run(d Distro) error {
 	return nil
 }
 
+func (l *ListCmd) Run(d Distro) error {
+	supportedDistros := []string{
+		"AlmaLinux",
+		"Debian",
+		"Fedora",
+		"NixOS",
+		"Parrot OS",
+		"Qubes OS",
+		"Rocky Linux",
+	}
+
+	fmt.Println("Supported distributions:")
+	for _, v := range supportedDistros {
+		fmt.Printf("* %s\n", v)
+	}
+
+	return nil
+}
+
 type Runner interface {
 	Init([]string) error
 	Run(d Distro) error
@@ -113,16 +154,35 @@ func Root(args []string) error {
 	cmds := []Runner{
 		NewAddCmd(),
 		NewRemoveCmd(),
+		NewListCmd(),
 	}
 
 	subcmd := os.Args[1]
 
 	for _, cmd := range cmds {
 		if cmd.Name() == subcmd {
+
+			if subcmd == "list" {
+				return cmd.Run(nil)
+			}
+
+			var distro, relver string
+
+			if len(os.Args[2:]) == 0 {
+				return fmt.Errorf("See -h for usage options")
+			}
+
 			cmd.Init(os.Args[2:])
 
-			distro := os.Args[3]
-			relver := os.Args[5]
+			if len(os.Args[4:]) == 0 && subcmd == "remove" {
+				relver = "*"
+			} else if len(os.Args[4:]) == 0 && subcmd == "add" {
+				return fmt.Errorf("Please enter a release version")
+			} else {
+				relver = os.Args[5]
+			}
+
+			distro = os.Args[3]
 
 			switch distro {
 			case "almalinux":

common/main.go

@@ -3,6 +3,7 @@ package common
 import (
 	"fmt"
 	"io/ioutil"
+	"log"
 	"net/http"
 	"strings"
 
@@ -41,21 +42,45 @@ func GetResponse(url string) ([]byte, error) {
 	return dataInBytes, nil
 }
 
+func values[M ~map[K]V, K comparable, V any](m M) []V {
+	r := make([]V, 0, len(m))
+	for _, v := range m {
+		r = append(r, v)
+	}
+
+	return r
+}
+
+func keys[M ~map[K]V, K comparable, V any](m M) []K {
+	r := make([]K, 0, len(m))
+	for k := range m {
+		r = append(r, k)
+	}
+
+	return r
+}
+
 func RemoveTorrents(nameSubstr string, relver string, transmissionbt *transmissionrpc.Client) error {
-	var oldTorrents []int64
 	torrents, err := transmissionbt.TorrentGet([]string{"id", "name"}, nil)
 	if err != nil {
 		return err
-	} else {
+	}
+
+	torrentsMap := map[string]int64{}
 	for _, torrent := range torrents {
+		if relver != "*" {
 			if strings.Contains(*torrent.Name, nameSubstr) && strings.Contains(*torrent.Name, relver) {
-				oldTorrents = append(oldTorrents, *torrent.ID)
+				torrentsMap[*torrent.Name] = *torrent.ID
+			}
+		} else {
+			if strings.Contains(*torrent.Name, nameSubstr) {
+				torrentsMap[*torrent.Name] = *torrent.ID
 			}
 		}
 	}
 
 	rmPayload := &transmissionrpc.TorrentRemovePayload{
-		IDs:             oldTorrents,
+		IDs:             values(torrentsMap),
 		DeleteLocalData: false,
 	}
 
@@ -63,5 +88,9 @@ func RemoveTorrents(nameSubstr string, relver string, transmissionbt *transmissi
 		return err
 	}
 
+	for _, key := range keys(torrentsMap) {
+		log.Printf("%s removed\n", key)
+	}
+
 	return nil
 }

nixos/main.go

@@ -10,6 +10,7 @@ import (
 
 type Nixos struct {
 	NameSubstr string
+	Relver     string
 	URL        string
 }
 
@@ -49,7 +50,7 @@ func (n Nixos) AddNewTorrents(transmissionbt *transmissionrpc.Client) error {
 }
 
 func (n Nixos) RemoveOldTorrents(transmissionbt *transmissionrpc.Client) error {
-	if err := common.RemoveTorrents(n.NameSubstr, "", transmissionbt); err != nil {
+	if err := common.RemoveTorrents(n.NameSubstr, n.Relver, transmissionbt); err != nil {
 		return err
 	}