package config

import (
	"errors"
	"strings"
)

type MatcherPredicateType uint8

const (
	MatcherPredicateTypeUnknown MatcherPredicateType = iota
	MatcherPredicateTypePattern
	MatcherPredicateTypeRegexp
)

func (t *MatcherPredicateType) UnmarshalText(data []byte) error {
	switch dataStr := strings.ToLower(string(data)); dataStr {
	case "":
		*t = MatcherPredicateTypeUnknown
	case "pattern":
		*t = MatcherPredicateTypePattern
	case "regexp":
		*t = MatcherPredicateTypeRegexp
	default:
		return errors.New("unsupported type " + dataStr)
	}

	return nil
}

type MatcherPredicate struct {
	Value string               `toml:"value"`
	Type  MatcherPredicateType `toml:"type"`
}

type DimensionMatcher struct {
	CaseInsensitive bool `toml:"case_insensitive"`

	Length []MatcherPredicate `toml:"length"`
	Width  []MatcherPredicate `toml:"width"`
	Height []MatcherPredicate `toml:"height"`
}