package main

import (
	"encoding/json"
	"fmt"
	"net/http"
	"net/url"
	"time"
)

type CardSearchResults struct {
	TotalCards int        `json:"total_cards"`
	HasMore    bool       `json:"has_more"`
	Data       []CardData `json:"data"`
	NextPage   string     `json:"next_page"`
}

type CardImage struct {
	Small      string `json:"small"`
	Normal     string `json:"normal"`
	Large      string `json:"large"`
	Png        string `json:"png"`
	ArtCrop    string `json:"art_crop"`
	BorderCrop string `json:"border_crop"`
}

type CardFaces struct {
	ImageUris CardImage `json:"image_uris"`
}

type CardData struct {
	ID           string      `json:"id"`
	Name         string      `json:"name"`
	URI          string      `json:"uri"`
	ScryfallURI  string      `json:"scryfall_uri"`
	Layout       string      `json:"layout"`
	HighresImage bool        `json:"highres_image"`
	ImageUris    CardImage   `json:"image_uris"`
	CardFaces    []CardFaces `json:"card_faces"`
	Eur          string      `json:"eur"`
	EdhrecRank   *int        `json:"edhrec_rank"`
	RelatedUris  struct {
		Gatherer       string `json:"gatherer"`
		TcgplayerDecks string `json:"tcgplayer_decks"`
		Edhrec         string `json:"edhrec"`
		Mtgtop8        string `json:"mtgtop8"`
	} `json:"related_uris"`
	PurchaseUris struct {
		Amazon       string `json:"amazon"`
		Ebay         string `json:"ebay"`
		Tcgplayer    string `json:"tcgplayer"`
		Cardmarket   string `json:"cardmarket"`
		Cardhoarder  string `json:"cardhoarder"`
		CardKingdom  string `json:"card_kingdom"`
		MtgoTraders  string `json:"mtgo_traders"`
		Coolstuffinc string `json:"coolstuffinc"`
	} `json:"purchase_uris"`
}

var netClient = &http.Client{
	Timeout: time.Second * 20,
}

func scryfallSearch(query string, offset int) (results CardSearchResults, err error) {
	query = url.QueryEscape(query)
	page := offset / 175
	cardoffset := offset % 175
	requrl := fmt.Sprintf("https://api.scryfall.com/cards/search?include_multilingual=true&order=name&page=%d&q=%s", page, query)
	response, err := netClient.Get(requrl)
	if err != nil {
		return
	}
	defer response.Body.Close()

	err = json.NewDecoder(response.Body).Decode(&results)
	maxoffset := cardoffset + 50
	if maxoffset > len(results.Data) {
		maxoffset = len(results.Data)
	}
	results.Data = results.Data[cardoffset:maxoffset]
	return
}

func scryfallGetCardByName(cardname string) (card CardData, err error) {
	cardname = url.QueryEscape(cardname)
	requrl := fmt.Sprintf("https://api.scryfall.com/cards/named?fuzzy=%s", cardname)
	response, err := netClient.Get(requrl)
	if err != nil {
		return
	}
	defer response.Body.Close()

	err = json.NewDecoder(response.Body).Decode(&card)
	return
}

func scryfallGetCardByID(id string) (card CardData, err error) {
	requrl := fmt.Sprintf("https://api.scryfall.com/cards/%s", id)
	response, err := netClient.Get(requrl)
	if err != nil {
		return
	}
	defer response.Body.Close()

	err = json.NewDecoder(response.Body).Decode(&card)
	return
}