package cmdparser

import "regexp"

// CommandType -
type CommandType int

// Cmd Types
const (
	TextCmd CommandType = 1 << iota
	ImageCmd
	VideoCmd
)

// Command -
type Command struct {
	Type    CommandType
	Message string
}

// CmdAction -
type CmdAction struct {
	Key string
	Act string
}

var actRegex = regexp.MustCompile("{{(.+?)}}")

// CommandParser -
func CommandParser(value string) (cmd *Command, err error) {
	acts := parseCmdAction(value)
	if len(acts) == 0 {
		// no get actions return origin value
		return &Command{
			Type:    TextCmd,
			Message: value,
		}, nil
	}

	return
}

func parseCmdAction(value string) (acts []*CmdAction) {
	strs := actRegex.FindAllStringSubmatch(value, -1)
	if len(strs) == 0 {
		return nil
	}

	acts = make([]*CmdAction, 0, len(strs))

	for _, key := range strs {
		acts = append(acts, &CmdAction{Key: key[1]})
	}

	return
}

func selectAction(act *CmdAction) {
}