package paxan

import (
	"encoding/csv"
	"log"
	"net/http"
	"time"

	bnn "gitea.statsd.de/dom/goBnn"
	"golang.org/x/text/encoding/charmap"
)

// SpricelistEntry - One entry in the spricelist
type SpricelistEntry struct {
	Sortiment    string
	Warengruppe  string
	Untergruppe  string
	Artnr        string
	Itemname1    string
	Itemname2    string
	Hersteller   string
	Qualitaet    string
	Herkunft     string
	Einheit      string
	Aktion       bool
	Menge1       float64
	Einzelpreis1 float64
	Vpepreis1    float64
	Menge2       string
	Einzelpreis2 string
	Vpepreis2    string
	Menge3       string
	Einzelpreis3 string
	Vpepreis3    string
	Menge4       string
	Einzelpreis4 string
	Vpepreis4    string
	Empfvk       float64
	Mwst         float64
	Ean          string
	Glutenfrei   bool
	Laktosefrei  bool
	Vegan        bool
	Regional     bool
	Fairtrade    bool
}

// DownloadPricelists - Download both price lists
func DownloadPricelists(client *http.Client) error {
	// Download preisliste
	r, err := client.Get("https://www.hakopaxan-shop.de/csv/preisliste.csv")
	if err != nil {
		return err
	}
	downloadFile(("preisliste-" + time.Now().Format("20060102150405") + ".csv"), r)

	// Download spreisliste
	r, err = client.Get("https://www.hakopaxan-shop.de/csv/spreisliste.csv")
	if err != nil {
		return err
	}
	downloadFile(("spreisliste-" + time.Now().Format("20060102150405") + ".csv"), r)

	return nil
}

// DownloadBnnlists - Download both price lists. The lists are public so we do not necessarily login before downloading.
func DownloadBnnlists(client *http.Client) error {
	// Download PL.BNN
	r, err := client.Get("https://static.paxan.de/2016/PL.BNN")
	if err != nil {
		return err
	}
	downloadFile(("PL-" + time.Now().Format("20060102150405") + ".BNN"), r)

	// Download PLF.BNN
	r, err = client.Get("https://static.paxan.de/2016/PLF.BNN")
	if err != nil {
		return err
	}
	downloadFile(("PLF-" + time.Now().Format("20060102150405") + ".BNN"), r)

	return nil
}

// RetrievePricelist - Downloads and converts pricelist into an array
func RetrievePricelist(client *http.Client) ([]SpricelistEntry, error) {
	// Download spreisliste
	resp, err := client.Get("https://www.hakopaxan-shop.de/csv/spreisliste.csv")
	if err != nil {
		return nil, err
	}

	dr := charmap.ISO8859_1.NewDecoder().Reader(resp.Body)

	r := csv.NewReader(dr)
	r.Comma = ';'
	records, err := r.ReadAll()
	if err != nil {
		log.Fatal(err)
	}

	var priceList []SpricelistEntry

	for i, line := range records {
		if i == 0 {
			continue
		}
		var priceListEntry SpricelistEntry

		priceListEntry.Sortiment = line[0]
		priceListEntry.Warengruppe = line[1]
		priceListEntry.Untergruppe = line[2]
		priceListEntry.Artnr = line[3]
		priceListEntry.Itemname1 = line[4]
		priceListEntry.Itemname2 = line[5]
		priceListEntry.Hersteller = line[6]
		priceListEntry.Qualitaet = line[7]
		priceListEntry.Herkunft = line[8]
		priceListEntry.Einheit = line[9]
		priceListEntry.Aktion = convertStringToBool(line[10])
		priceListEntry.Menge1 = convertStringToFloat(line[11])
		priceListEntry.Einzelpreis1 = convertStringToFloat(line[12])
		priceListEntry.Vpepreis1 = convertStringToFloat(line[13])
		priceListEntry.Menge2 = line[14]
		priceListEntry.Einzelpreis2 = line[15]
		priceListEntry.Vpepreis2 = line[16]
		priceListEntry.Menge3 = line[17]
		priceListEntry.Einzelpreis3 = line[18]
		priceListEntry.Vpepreis3 = line[19]
		priceListEntry.Menge4 = line[20]
		priceListEntry.Einzelpreis4 = line[21]
		priceListEntry.Vpepreis4 = line[22]
		priceListEntry.Empfvk = convertStringToFloat(line[23])
		priceListEntry.Mwst = convertStringToFloat(line[24])
		priceListEntry.Ean = line[25]
		priceListEntry.Glutenfrei = convertStringToBool(line[26])
		priceListEntry.Laktosefrei = convertStringToBool(line[27])
		priceListEntry.Vegan = convertStringToBool(line[28])
		priceListEntry.Regional = convertStringToBool(line[29])
		priceListEntry.Fairtrade = convertStringToBool(line[30])

		priceList = append(priceList, priceListEntry)
	}

	return priceList, nil

}

// RetrieveBnnlistPL - Downloads list PL and converts bnn list into an array
func RetrieveBnnlistPL(client *http.Client) (bnn.Bnn, error) {
	// Download bnn
	resp, err := client.Get("https://static.paxan.de/2016/PL.BNN")
	if err != nil {
		return bnn.Bnn{}, err
	}

	b, err := bnn.ReadBnn(resp.Body)
	if err != nil {
		return bnn.Bnn{}, err
	}

	return b, nil

}

// RetrieveBnnlistPLF - Downloads list PLF and converts bnn list into an array
func RetrieveBnnlistPLF(client *http.Client) (bnn.Bnn, error) {
	// Download bnn
	resp, err := client.Get("https://static.paxan.de/2016/PLF.BNN")
	if err != nil {
		return bnn.Bnn{}, err
	}

	b, err := bnn.ReadBnn(resp.Body)
	if err != nil {
		return bnn.Bnn{}, err
	}

	return b, nil

}