rework the commands thing and add a "commands" command to list all commands

1 files changed, 33 insertions, 20 deletions

diff --git a/commands/commands.go b/commands/commands.go
index faca02ab..0a3c33ad 100644
--- a/commands/commands.go
+++ b/commands/commands.go
@@ -1,31 +1,44 @@
-// Package commands contains the assorted sub commands supported by the git-bug tool.
 package commands
 
 import (
+	"flag"
+	"fmt"
 	"github.com/MichaelMure/git-bug/repository"
 )
 
-const messageFilename = "BUG_MESSAGE_EDITMSG"
+var commandsFlagSet = flag.NewFlagSet("commands", flag.ExitOnError)
 
-// Command represents the definition of a single command.
-type Command struct {
-	Usage     func(string)
-	RunMethod func(repository.Repo, []string) error
-}
+var (
+	commandsDesc = commandsFlagSet.Bool("pretty", false, "Output the command description as well as Markdown compatible comment")
+)
+
+func runCommands(repo repository.Repo, args []string) error {
+	commandsFlagSet.Parse(args)
+	args = commandsFlagSet.Args()
+
+	first := true
+
+	for name, cmd := range CommandMap {
+		if !first {
+			fmt.Println()
+		}
+
+		first = false
+
+		if *commandsDesc {
+			fmt.Printf("# %s\n", cmd.Description)
+		}
+
+		// TODO: the root name command ("git bug") should be passed from git-bug.go but well ...
+		fmt.Printf("%s %s %s\n", "git bug", name, cmd.Usage)
+	}
 
-// Run executes a command, given its arguments.
-//
-// The args parameter is all of the command line args that followed the
-// subcommand.
-func (cmd *Command) Run(repo repository.Repo, args []string) error {
-	return cmd.RunMethod(repo, args)
+	return nil
 }
 
-// CommandMap defines all of the available (sub)commands.
-var CommandMap = map[string]*Command{
-	"comment": commentCmd,
-	"ls":      lsCmd,
-	"new":     newCmd,
-	"pull":    pullCmd,
-	"push":    pushCmd,
+var commandsCmd = &Command{
+	Description: "Display available commands",
+	Usage:       "[<option>...]",
+	flagSet:     commandsFlagSet,
+	RunMethod:   runCommands,
 }