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package main
import (
"regexp"
"strings"
"github.com/gocolly/colly"
)
func (app *App) ScrapeWhiskysitenl(shop Shop) []Angebot {
Whiskys := []Angebot{}
Shop_url := "https://www.whiskysite.nl/en/specials/?limit=100"
c := colly.NewCollector(
colly.AllowedDomains("whiskysite.nl"),
colly.AllowedDomains("www.whiskysite.nl"),
)
c.OnHTML(".product-block", func(e *colly.HTMLElement) {
if e.Request.URL.String() != Shop_url {
return
}
W := Angebot{}
W.Shop = shop.Id
W.Spirit_type = "Whisky"
whisky_name := e.ChildAttr("img", "alt")
whisky_url := e.ChildAttr("a", "href")
W.Name = whisky_name
W.Url = whisky_url
regular_price := e.ChildText(".price-old")
price_discount_noisy := e.ChildText(".product-block-price")
r, err := regexp.Compile("[0-9]+(,[0-9]{1,2})")
if err != nil {
Fatal(err, "Whiskysite.nl: Discounted price regex failed")
}
discounted_price := r.FindString(strings.Trim(strings.TrimPrefix(price_discount_noisy, regular_price), ""))
W.Original_price, err = convert_price(regular_price)
if err != nil {
W.error_msg = err.Error()
W.error_ctx = regular_price
PrintlnOffer(W, "Whiskysite.nl: Extracting original price failed")
return
}
W.Discounted_price, err = convert_price(discounted_price)
if err != nil {
W.error_msg = err.Error()
W.error_ctx = discounted_price
PrintlnOffer(W, "Whiskysite.nl: Extracting discounted price failed")
return
}
W.Image_url = e.ChildAttr("img", "src")
e.Request.Visit(W.Url)
volume_failed := e.Request.Ctx.Get("volume_failed")
if volume_failed != "" {
W.error_msg = "Whiskysite.nl: Extracting volume via Liter-Regex failed"
W.error_ctx = volume_failed
PrintlnOffer(W, "Whiskysite.nl: Extracting volume via Liter-Regex failed")
return
}
if e.Request.Ctx.Get("abv_failed") != "" {
W.error_msg = "Whiskysite.nl: Extracting abv via Abv-Regex failed"
W.error_ctx = e.Request.Ctx.Get("volume_failed")
PrintlnOffer(W, "Whiskysite.nl: Extracting abv via Abv-Regex failed")
return
}
var ctx string
W.Volume, ctx = get_volume(e)
if W.Volume == 0 {
W.error_msg = "Whiskysite.nl: Extracting volume failed"
W.error_ctx = ctx
PrintlnOffer(W, "Whiskysite.nl: Extracting volume failed")
return
}
W.Abv, ctx = get_abv(e)
if W.Abv == 0 {
W.error_msg = "Whiskysite.nl: Extracting abv failed"
W.error_ctx = ctx
PrintlnOffer(W, "Whiskysite.nl: Extracting abv failed")
return
}
// calculate base price, volume is never zero
W.Base_price = int(RoundToEven(float64(W.Discounted_price) / float64(W.Volume)))
W.Website = e.Request.Ctx.Get("website")
Whiskys = append(Whiskys, W)
})
c.OnHTML("#information", func(e *colly.HTMLElement) {
if e.Request.URL.String() == Shop_url {
return
}
text_noisy := e.Text
// 0.70ltr. 43.00%
// 0,70 l 46%
// 1,0ltr. 43%
r_number, err := regexp.Compile("[0-9]+([.,][0-9]+)?")
if err != nil {
Fatal(err, "Whiskysite.nl: Number regex failed")
}
r_liter, err := regexp.Compile("[0-9]+([.,][0-9]+)?( )*(l|ltr)")
if err != nil {
Fatal(err, "Whiskysite.nl: Volume regex failed")
}
litre_noisy := r_liter.FindString(text_noisy)
if litre_noisy == "" {
e.Request.Ctx.Put("volume_failed", text_noisy)
return
}
/*
* it's important to add "Liter", because it's required for get_volume()
*/
e.Request.Ctx.Put("volume", r_number.FindString(litre_noisy)+" Liter")
r_abv, err := regexp.Compile("[0-9]+([.,][0-9]+)?( )*%")
if err != nil {
Fatal(err, "Whiskysite.nl: Abv regex failed")
}
abv_noisy := r_abv.FindString(text_noisy)
if abv_noisy == "" {
e.Request.Ctx.Put("abv_failed", text_noisy)
return
}
e.Request.Ctx.Put("abv", abv_noisy)
e.Request.Ctx.Put("website", string(e.Response.Body))
})
c.Visit(Shop_url)
return Whiskys
}
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