package steamreq

import (
	"fmt"
	"math"
	"net/http"
	"steam_analyzer/internal/utils/jsonutils"
	"time"

	"golang.org/x/time/rate"
)

type Categories struct {
	caseCat string
	knife   string
}

type Requester struct {
	baseMarketURL string
	categories    Categories
	limiter       *rate.Limiter
}

func NewRequester(baseURL string, perTime time.Duration, count int) *Requester {
	return &Requester{
		baseMarketURL: baseURL,
		categories: Categories{
			caseCat: "category_730_Type[]=tag_CSGO_Type_WeaponCase",
			knife:   "category_730_Type[]=tag_CSGO_Type_Knife",
		},
		limiter: rate.NewLimiter(rate.Every(perTime), count),
	}
}

func (r *Requester) GetItem(query string, itemType string) ([]SteamMarketItem, error) {
	var steamMarketItems []SteamMarketItem

	var pageCount int = 1
	for i := 0; i < pageCount; i++ {
		//if err := r.limiter.Wait(context.Background()); err != nil {
		//	fmt.Printf("Limiter error: %v\n", err)
		//	continue
		//}

		response, err := r.doRequest(query, itemType, i)
		if err != nil {
			fmt.Printf("Error while doing request. Query: %v. ItemType: %v. Start %v", query, itemType, i)
			continue
		}

		steamMarketItems = append(steamMarketItems, response.Results...)
		if i == 0 {
			pageCount = int(math.Ceil(float64(response.TotalCount) / float64(response.Pagesize)))
		}
	}

	return steamMarketItems, nil
}

func (r *Requester) doRequest(query string, itemType string, start int) (*Response, error) {
	itemURL := r.createItemURL(query, itemType, start*10)

	// fmt.Println(itemURL)

	req, err := http.NewRequest("GET", itemURL, nil)
	if err != nil {
		return nil, fmt.Errorf("error while creating request %v", err)
	}

	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		return nil, fmt.Errorf("error while making http request %v", err)
	}
	defer resp.Body.Close()

	var steamResponse Response
	err = jsonutils.FromJSON(resp.Body, &steamResponse)
	if err != nil {
		return nil, fmt.Errorf("error while getting item %v", err)
	}

	return &steamResponse, nil
}

func (r *Requester) createItemURL(item string, itemType string, start int) string {
	marketItemsURL := r.baseMarketURL + `?query=%v&start=%v&count=%v&search_descriptions=0&sort_column=%v&sort_dir=%v&appid=730&norender=1`
	count := 10
	sortColumn := "price"
	sortDir := "asc"

	url := fmt.Sprintf(marketItemsURL,
		item,
		start,
		count,
		sortColumn,
		sortDir,
	)

	switch itemType {
	case "case":
		url = url + "&" + r.categories.caseCat
	case "knife":
		url = url + "&" + r.categories.knife
	}

	return url
}