From fc83917d623228b09191f178062e59fad0722795 Mon Sep 17 00:00:00 2001
From: horus_arch
Date: Sat, 17 Feb 2018 15:07:52 +0100
Subject: Adds crawler for whiskysite.nl. (crawler)

---
 crawler/shop_whiskysitenl.go | 84 +++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 79 insertions(+), 5 deletions(-)

(limited to 'crawler/shop_whiskysitenl.go')

diff --git a/crawler/shop_whiskysitenl.go b/crawler/shop_whiskysitenl.go
index 43345b2..fb2940d 100644
--- a/crawler/shop_whiskysitenl.go
+++ b/crawler/shop_whiskysitenl.go
@@ -1,7 +1,6 @@
 package main
 
 import (
-	log "github.com/Sirupsen/logrus"
 	"regexp"
 	"strings"
 
@@ -11,6 +10,8 @@ import (
 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"),
@@ -30,30 +31,103 @@ func (app *App) ScrapeWhiskysitenl(shop Shop) []Angebot {
 		price_discount_noisy := e.ChildText(".product-block-price")
 		r, err := regexp.Compile("[0-9]+(,[0-9]{1,2})")
 		if err != nil {
-			log.Fatal(err)
+			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 {
-			//log.Println(W.Name, err)
+			W.error_msg = err.Error()
+			W.error_ctx = regular_price
+			WarnOffer(W, "Whiskysite.nl: Extracting original price failed")
 			return
 		}
 		W.Discounted_price, err = convert_price(discounted_price)
 		if err != nil {
-			//log.Println(W.Name, err)
+			W.error_msg = err.Error()
+			W.error_ctx = discounted_price
+			WarnOffer(W, "Whiskysite.nl: Extracting discounted price failed")
 			return
 		}
 
 		W.Image_url = e.ChildAttr("img", "src")
 
+		if e.Request.Ctx.Get("volume_failed") != "" {
+			W.error_msg = "Whiskysite.nl: Extracting volume via Liter-Regex failed"
+			W.error_ctx = e.Request.Ctx.Get("volume_failed")
+			WarnOffer(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")
+			WarnOffer(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
+			WarnOffer(W, "Whiskysite.nl: Extracting volume failed")
+			return
+		}
+		W.Abv, ctx = get_volume(e)
+		if W.Abv == 0 {
+			W.error_msg = "Whiskysite.nl: Extracting abv failed"
+			W.error_ctx = ctx
+			WarnOffer(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.Shop = shop.Id
 		W.Spirit_type = "Whisky"
 
 		Whiskys = append(Whiskys, W)
 	})
 
-	c.Visit("https://www.whiskysite.nl/en/specials/?limit=100")
+	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
+		}
+		e.Request.Ctx.Put("volume", r_number.FindString(litre_noisy))
+
+		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)
+
+	})
+
+	c.Visit(Shop_url)
 
 	return Whiskys
 }
-- 
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