package commands

import (
	"fmt"
	"os"
	"strings"

	"github.com/github/git-lfs/config"
	"github.com/github/git-lfs/httputil"
	"github.com/spf13/cobra"
)

func Run() {
	cfg = config.Config
	root := NewCommand("git-lfs", gitlfsCommand)
	root.PreRun = nil

	// Set up help/usage funcs based on manpage text
	root.SetHelpTemplate("{{.UsageString}}")
	root.SetHelpFunc(helpCommand)
	root.SetUsageFunc(usageCommand)

	for _, f := range commandFuncs {
		if cmd := f(); cmd != nil {
			root.AddCommand(cmd)
		}
	}

	root.Execute()
	httputil.LogHttpStats(cfg)
}

func gitlfsCommand(cmd *cobra.Command, args []string) {
	versionCommand(cmd, args)
	cmd.Usage()
}

func helpCommand(cmd *cobra.Command, args []string) {
	if len(args) == 0 {
		printHelp("git-lfs")
	} else {
		printHelp(args[0])
	}

}

func usageCommand(cmd *cobra.Command) error {
	printHelp(cmd.Name())
	return nil
}

func printHelp(commandName string) {
	if txt, ok := ManPages[commandName]; ok {
		fmt.Fprintf(os.Stderr, "%s\n", strings.TrimSpace(txt))
	} else {
		fmt.Fprintf(os.Stderr, "Sorry, no usage text found for %q\n", commandName)
	}
}