package methods

import (
	"encoding/json"
	"errors"
	"io"
	"log"
	"net/http"
	"sevenkeys/scryfall/types"
)

var BULK_DATA_URI = "https://api.scryfall.com/bulk-data"

func GetBulkData() types.BulkDataList {
	response, err := http.Get(BULK_DATA_URI)
	if err != nil {
		log.Fatal(err)
	}

	if response.StatusCode != http.StatusOK {
		log.Fatal(response.StatusCode)
	}

	defer response.Body.Close()
	bulkDataBytes, err := io.ReadAll(response.Body)
	if err != nil {
		log.Fatal(err)
	}

	var bulkDataList types.BulkDataList
	err = json.Unmarshal(bulkDataBytes, &bulkDataList)
	if err != nil {
		log.Fatal(err)
	}

	return bulkDataList
}

func getBulkDownloadUri(bulkType string) (string, error) {
	bulkDataList := GetBulkData()
	for index := range bulkDataList.Data {
		bulkData := bulkDataList.Data[index]
		if bulkData.Type == bulkType {
			return bulkData.DownloadUri, nil
		}
	}

	return "", errors.New("No bulk data of type " + bulkType + " found.")
}

func GetAllCards() []types.Card {
	allCardsUri, err := getBulkDownloadUri("all_cards")
	if err != nil {
		log.Fatal(err)
	}

	response, err := http.Get(allCardsUri)
	if err != nil {
		log.Fatal(err)
	}

	if response.StatusCode != http.StatusOK {
		log.Fatal(response.StatusCode)
	}

	defer response.Body.Close()
	allCardsBytes, err := io.ReadAll(response.Body)
	if err != nil {
		log.Fatal(err)
	}

	var allCards []types.Card
	err = json.Unmarshal(allCardsBytes, &allCards)
	if err != nil {
		log.Fatal(err)
	}

	return allCards
}