package mlp

import (
	"errors"
	"strings"

	"git.fromouter.space/mcg/draft"
)

// Card is a single MLP:CCG card in a set
type Card struct {
	ID                   string
	Name                 string
	Subname              string
	Element              []string
	Keywords             []string
	Traits               []string
	Requirement          PowerRequirement `json:",omitempty"`
	Cost                 *int             `json:",omitempty"`
	Power                *int             `json:",omitempty"`
	Type                 string
	Text                 string
	Rarity               Rarity
	ProblemBonus         *int             `json:",omitempty"`
	ProblemOpponentPower int              `json:",omitempty"`
	ProblemRequirement   PowerRequirement `json:",omitempty"`
	Boosted              *Card            `json:",omitempty"`
}

// ToDraftCard converts cards to draft.Card
func (c Card) ToDraftCard() draft.Card {
	return draft.Card{
		ID: c.ID,
	}
}

// PowerRequirement denotes one or more power requirements, colored or not
type PowerRequirement map[string]int

// Errors involving loading cards
var (
	ErrInvalidCardID = errors.New("invalid card id")
	ErrCardNotFound  = errors.New("card not found in their set")
)

// LoadCardList loads cards from sets, fetching them from HTTP if needed/wanted
func LoadCardList(list []string, fetch bool) (out []Card, err error) {
	out = make([]Card, len(list))
	for i, card := range list {
		if len(card) < 3 {
			err = ErrInvalidCardID
			return
		}

		// Get Set ID
		setid := SetID(strings.ToUpper(card[:2]))

		// Check for promo card
		for _, promoid := range promoIDs {
			if strings.ToLower(card) == promoid {
				card = strings.ToLower(card)
				setid = SetPromo
				break
			}
		}

		// Get set
		var set *Set
		if fetch {
			set, err = LoadSetHTTP(setid)
		} else {
			set, err = LoadSetMemory(setid)
		}
		if err != nil {
			return
		}

		cdata, ok := set.CardData[card]
		if !ok {
			err = ErrCardNotFound
			return
		}

		out[i] = cdata
	}
	return
}