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package main
import (
"errors"
"math"
"regexp"
"strconv"
"strings"
"github.com/gocolly/colly"
)
func stringInSlice(a string, list []string) bool {
for _, b := range list {
if b == a {
return true
}
}
return false
}
func detect_spirit_type(name string) string {
matched, err := regexp.MatchString(`(^|\s)Gin(\s|$)`, name)
if err != nil {
Fatal(err, "Gin regex failed")
}
if matched {
return "Gin"
}
matched, err = regexp.MatchString(`(^|\s)Rh?um(\s|$)`, name)
if err != nil {
Fatal(err, "Rum regex failed")
}
if matched {
return "Rum"
}
matched, err = regexp.MatchString(`(^|\s)[VW]odka(\s|$)`, name)
if err != nil {
Fatal(err, "Wodka regex failed")
}
if matched {
return "Wodka"
}
matched, err = regexp.MatchString(`(^|\s)Whiske?y(\s|$)`, name)
if err != nil {
Fatal(err, "Whisky regex failed")
}
if matched {
return "Whisky"
}
matched, err = regexp.MatchString(`(^|\s)Champagner(\s|$)`, name)
if err != nil {
Fatal(err, "Champagner regex failed")
}
if matched {
return "Champagner"
}
matched, err = regexp.MatchString(`(^|\s)Cognac(\s|$)`, name)
if err != nil {
Fatal(err, "Cognac regex failed")
}
if matched {
return "Cognac"
}
matched, err = regexp.MatchString(`(^|\s)Grappa(\s|$)`, name)
if err != nil {
Fatal(err, "Grappa regex failed")
}
if matched {
return "Grappa"
}
matched, err = regexp.MatchString(`(^|\s)Likör(\s|$)`, name)
if err != nil {
Fatal(err, "Likör regex failed")
}
if matched {
return "Likör"
}
return "Verschiedenes"
}
func extract_volume(volume string) (float32, error) {
var volume_noisy string
var is_litre_instead_of_cl bool
// difference between cl...
r_cl, err := regexp.Compile(`[0-9]+([,.][0-9]+)?( )?[cC][lL]`)
if err != nil {
Fatal(err, "Extract volume (centiliter) regex failed")
}
volume_noisy = r_cl.FindString(volume)
if volume_noisy == "" {
// ...and litre
is_litre_instead_of_cl = true
r_liter, err := regexp.Compile(`[0-9]+([,.][0-9]+)?( )?[lL](iter)?`)
if err != nil {
Fatal(err, "Extract volume regex failed")
}
volume_noisy = r_liter.FindString(volume)
}
// extract numbers
r_liter2, err := regexp.Compile(`[0-9]+([,.][0-9]+)?`)
if err != nil {
Fatal(err, "2nd extract volume regex failed")
}
volume_noisy = r_liter2.FindString(volume_noisy)
volume_noisy = strings.Replace(volume_noisy, ",", ".", 1)
volume64, err := strconv.ParseFloat(volume_noisy, 0)
if err != nil {
Println(err, "Parsing volume to float failed")
return 0, err
}
// converting from cl to litre
if !is_litre_instead_of_cl {
volume64 = volume64 / 100
}
return float32(volume64), err
}
func extract_abv(abv_noisy string) (float32, error) {
if strings.Contains(abv_noisy, "%") {
abv_noisy = strings.Replace(abv_noisy, "%", "", 1)
}
if strings.Contains(abv_noisy, "vol") {
abv_noisy = strings.Replace(abv_noisy, "vol", "", 1)
}
if strings.Contains(abv_noisy, "Vol") {
abv_noisy = strings.Replace(abv_noisy, "Vol", "", 1)
}
abv_noisy = strings.Replace(abv_noisy, ",", ".", 1)
abv_noisy = strings.TrimSpace(abv_noisy)
r_abv, err := regexp.Compile(`[0-9]+([,.][0-9]+)?`)
if err != nil {
Fatal(err, "Extract abv regex failed")
}
abv_noisy = r_abv.FindString(abv_noisy)
abv64, err := strconv.ParseFloat(abv_noisy, 0)
if err != nil {
Println(err, "Parsing abv to float failed")
return 0, err
}
return float32(abv64), nil
}
/*
* In litre, but float.
*/
func get_volume(e *colly.HTMLElement) (float32, string) {
volume_noisy := e.Request.Ctx.Get("volume")
matched, err := regexp.MatchString(`[lL](iter)?`, volume_noisy)
if err != nil {
Fatal(err, "Get volume regex failed")
}
if !matched {
return 0, volume_noisy
}
volume, err := extract_volume(volume_noisy)
if err != nil {
Warn(err, "Get Volume: Extract Volume failed: "+volume_noisy)
return 0, err.Error() + " // volume_noisy: " + volume_noisy
}
return volume, ""
}
/*
* In procent. (float)
*/
func get_abv(e *colly.HTMLElement) (float32, string) {
abv_noisy := e.Request.Ctx.Get("abv")
if abv_noisy == "" {
return 0, abv_noisy
}
// abv_noisy = strings.Replace(abv_noisy, ".", ",", 1)
abv, err := extract_abv(abv_noisy)
if err != nil {
Warn(err, "Get ABV: Extract ABV failed: "+abv_noisy)
return 0, err.Error() + " // abv_noisy: " + abv_noisy
}
return abv, ""
}
/*
* In cents. (int)
*/
func get_base_price(e *colly.HTMLElement) (int, error) {
base_price_noisy := e.Request.Ctx.Get("base_price")
if base_price_noisy == "" {
return 0, errors.New("Base price empty")
}
base_price, err := sanitize_base_price(base_price_noisy)
if err != nil {
return 0, err
}
return base_price, nil
}
/*
* Source: https://golang.org/src/math/floor.go?s=2165:2200#L104
* Will use std lib with go version >= 1.10
*/
func RoundToEven(x float64) float64 {
t := math.Trunc(x)
odd := math.Remainder(t, 2) != 0
if d := math.Abs(x - t); d > 0.5 || (d == 0.5 && odd) {
return t + math.Copysign(1, x)
}
return t
}
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