package telegraph

import (
	"fmt"
	"strconv"

	json "github.com/pquerna/ffjson/ffjson"
	http "github.com/valyala/fasthttp"
)

// GetViews get the number of views for a Telegraph article. By default, the
// total number of page views will be returned. Returns a PageViews object
// on success.
func GetViews(path string, hour, day, month, year int) (*PageViews, error) {
	var args http.Args

	if hour > -1 {
		// If passed, the number of page views for the requested hour will
		// be returned.
		args.Add("hour", strconv.Itoa(hour))
	}

	if day > 0 {
		// Required if hour is passed. If passed, the number of page views
		// for the requested day will be returned.
		args.Add("day", strconv.Itoa(day))
	}

	if month > 0 {
		// Required if day is passed. If passed, the number of page views
		// for the requested month will be returned.
		args.Add("month", strconv.Itoa(month))
	}

	if year > 0 {
		// Required if month is passed. If passed, the number of page views
		// for the requested year will be returned.
		args.Add("year", strconv.Itoa(year))
	}

	url := fmt.Sprintf(PathEndpoint, "getViews", path)
	body, err := request(url, &args)
	if err != nil {
		return nil, err
	}

	var resp PageViews
	err = json.Unmarshal(*body.Result, &resp)

	return &resp, err
}