package scryfall

import (
	"encoding/json"
	"errors"
	"io"
	"net/http"
	"time"
)

type BulkData struct {
	Id              string    `json:"id"`
	Uri             string    `json:"uri"`
	Type            string    `json:"type"`
	Name            string    `json:"name"`
	Description     string    `json:"description"`
	DownloadUri     string    `json:"download_uri"`
	UpdatedAt       string    `json:"updated_at"`
	UpdatedAtTime   time.Time `json:"ignore"`
	Size            int       `json:"size"`
	ContentType     string    `json:"content_type"`
	ContentEncoding string    `json:"content_encoding"`
}

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

const BulkDataTypeOracleCards string = "oracle_cards"
const BulkDataTypeUniqueArtwork string = "unique_artwork"
const BulkDataTypeDefaultCards string = "default_cards"
const BulkDataTypeAllCards string = "all_cards"
const BulkDataTypeRulings string = "rulings"

func GetBulkDataByType(bulkDataType string) (BulkData, error) {
	response, err := http.Get(BULK_DATA_URI + "/" + bulkDataType)
	if err != nil {
		return BulkData{}, err
	}

	if response.StatusCode != http.StatusOK {
		return BulkData{}, errors.New("HTTP request failed with code: " + string(response.StatusCode))
	}

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

	var bulkData BulkData
	err = json.Unmarshal(bulkDataBytes, &bulkData)
	if err != nil {
		return BulkData{}, err
	}

	bulkData.UpdatedAtTime, err = time.Parse(ScryfallTimestampFormat, bulkData.UpdatedAt)
	if err != nil {
		return BulkData{}, err
	}
	// Round to the nearest second; this is so that comparison with the timestamp stored in the database works as intended
	bulkData.UpdatedAtTime = bulkData.UpdatedAtTime.Truncate(time.Second)

	return bulkData, nil
}