package coindesk

import (
	"context"
	"fmt"
	"strings"
	"time"

	"github.com/carlmjohnson/requests"
)

// GetPriceValues gets timestamped prices for a particular asset.
func GetPriceValues(
	ctx context.Context, asset Asset, startDate, endDate time.Time,
) (resp Response[PriceValues], err error) {
	const basePath = "v2/tb/price/values"
	const timeFormat = "2006-01-02T15:04"
	err = requests.New(commonConfig).
		Path(fmt.Sprintf("%s/%s", basePath, asset)).
		Param("start_date", startDate.Format(timeFormat)).
		Param("end_date", endDate.Format(timeFormat)).
		ToJSON(&resp).
		Fetch(ctx)
	return
}

// GetAssetTickers gets tickers for a set of assets.
func GetAssetTickers(ctx context.Context, assets ...Asset) (resp Response[AssetTickers], err error) {
	const basePath = "v2/tb/price/ticker"
	var strAssets []string
	for _, asset := range assets {
		strAssets = append(strAssets, string(asset))
	}
	err = requests.New(commonConfig).
		Path(basePath).
		Param("assets", strings.Join(strAssets, ",")).
		ToJSON(&resp).
		Fetch(ctx)
	return
}

const baseUrl = "https://production.api.coindesk.com"

func commonConfig(rb *requests.Builder) {
	rb.
		BaseURL(baseUrl).
		Accept("application/json;charset=utf-8")
}