package cmd

import "go.fifitido.net/cmd/flags"

type Command struct {
	Name             string
	ShortDescription string
	LongDescription  string
	Aliases          []string
	Arguments        []*Argument
	Flags            []flags.Flag
	Subcommands      []*Command
	Run              func(args []string)
	RunE             func(args []string) error
	isRoot           bool
}

func NewRoot(options ...Option) *Command {
	cmd := &Command{isRoot: true}
	cmd.ApplyOptions(options...)
	return cmd
}

func New(name string, options ...Option) *Command {
	cmd := &Command{Name: name}
	cmd.ApplyOptions(options...)
	return cmd
}

func (c *Command) ApplyOptions(options ...Option) {
	for _, option := range options {
		option(c)
	}
}

func (c *Command) Execute(args []string) {
	if len(args) == 0 {
		return
	}

	for _, subcommand := range c.Subcommands {
		if subcommand.Name == args[0] {
			subcommand.Execute(args[1:])
			return
		}

		for _, alias := range subcommand.Aliases {
			if alias == args[0] {
				subcommand.Execute(args[1:])
				return
			}
		}
	}

	if c.Run != nil {
		c.Run(args)
		return
	}

	if c.RunE != nil {
		if err := c.RunE(args); err != nil {
			panic(err)
		}
		return
	}
}