spruce/main.go

package main

import (
	"fmt"
	"log/slog"
	"os"

	"codeflow.dananglin.me.uk/apollo/spruce/internal/cmd"
)

type Runner interface {
	Parse([]string) error
	Name() string
	Run() error
}

var (
	binaryVersion string
	buildTime     string
	goVersion     string
	gitCommit     string
)

func main() {
	logOptions := slog.HandlerOptions{
		AddSource: false,
	}

	logger := slog.New(slog.NewTextHandler(os.Stdout, &logOptions))

	slog.SetDefault(logger)

	commandMap := map[string]Runner{
		"version": cmd.NewVersionCommand(
			binaryVersion,
			buildTime,
			goVersion,
			gitCommit,
		),
		"generate": cmd.NewGenerateCommand(),
		"create":   cmd.NewCreateCommand(),
	}

	subcommand := os.Args[1]

	runner, ok := commandMap[subcommand]

	if !ok {
		slog.Error("unknown subcommand", "subcommand", subcommand)
		os.Exit(1)
	}

	if err := runner.Parse(os.Args[2:]); err != nil {
		slog.Error(fmt.Sprintf("unable to parse the command line flags; %v.", err))
		os.Exit(1)
	}

	if err := runner.Run(); err != nil {
		slog.Error(fmt.Sprintf("unable to run '%s'; %v.", runner.Name(), err))
		os.Exit(1)
	}
}