Generic attributes (#120)

* fix #117: use a generic attribute parser, still support fixed attrs

ad.go

@@ -18,6 +18,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
 package main
 
 import (
+	"bufio"
 	"log/slog"
 	"strings"
 	"time"
@@ -31,10 +32,12 @@ type Ad struct {
 	Title        string `goquery:"h1"`
 	Slug         string
 	ID           string
-	Details      []string `goquery:".addetailslist--detail--value,text"`
-	Condition    string   // post processed from details
-	Type         string   // post processed from details
-	Color        string   // post processed from details
+	Details      string            `goquery:".addetailslist--detail,text"`
+	Attributes   map[string]string // processed afterwards
+	Condition    string            // post processed from details for backward compatibility
+	Type         string            // post processed from details for backward compatibility
+	Color        string            // post processed from details for backward compatibility
+	Material     string            // post processed from details for backward compatibility
 	Category     string
 	CategoryTree []string `goquery:".breadcrump-link,text"`
 	Price        string   `goquery:"h2#viewad-price"`
@@ -53,19 +56,11 @@ func (ad *Ad) LogValue() slog.Value {
 		slog.Int("imagecount", len(ad.Images)),
 		slog.Int("bodysize", len(ad.Text)),
 		slog.String("categorytree", strings.Join(ad.CategoryTree, "+")),
-		slog.String("condition", ad.Condition),
 		slog.String("created", ad.Created),
 		slog.String("expire", ad.Expire),
 	)
 }
 
-// static set of conditions available, used for post processing details
-var CONDITIONS = []string{"Neu", "Gut", "Sehr Gut", "In Ordnung"}
-var COLORS = []string{"Beige", "Blau", "Braun", "Bunt", "Burgunderrot",
-	"Creme", "Gelb", "Gold", "Grau", "Grün", "Holz", "Khaki", "Lavelndel",
-	"Lila", "Orange", "Pink", "Print", "Rot", "Schwarz", "Silber",
-	"Transparent", "Türkis", "Weiß", "Sonstige"}
-
 // check for  completeness.  I  erected these  fields to  be mandatory
 // (though I really don't know if  they really are). I consider images
 // and meta  optional. So,  if either  of the  checked fields  here is
@@ -90,3 +85,64 @@ func (ad *Ad) CalculateExpire() {
 		}
 	}
 }
+
+/*
+Decode attributes like color or condition. See
+https://github.com/TLINDEN/kleingebaeck/issues/117
+for more details. In short: the HTML delivered by
+kleinanzeigen.de has no css attribute for the keys
+so we cannot extract key=>value mappings of the
+ad details but have to parse them manually.
+
+The ad.Details member contains this after goq run:
+
+Art
+
+	Weitere Kinderzimmermöbel
+
+	Farbe
+	Holz
+
+	Zustand
+	In Ordnung
+
+We parse this into ad.Attributes and fill in some
+static members for backward compatibility reasons.
+*/
+func (ad *Ad) DecodeAttributes() {
+	rd := strings.NewReader(ad.Details)
+	scanner := bufio.NewScanner(rd)
+
+	isattr := true
+	attr := ""
+	attrmap := map[string]string{}
+
+	for scanner.Scan() {
+		line := strings.TrimSpace(scanner.Text())
+
+		if line == "" {
+			continue
+		}
+
+		if isattr {
+			attr = line
+		} else {
+			attrmap[attr] = line
+		}
+
+		isattr = !isattr
+	}
+
+	ad.Attributes = attrmap
+
+	switch {
+	case Exists(ad.Attributes, "Zustand"):
+		ad.Condition = ad.Attributes["Zustand"]
+	case Exists(ad.Attributes, "Farbe"):
+		ad.Color = ad.Attributes["Farbe"]
+	case Exists(ad.Attributes, "Art"):
+		ad.Type = ad.Attributes["Type"]
+	case Exists(ad.Attributes, "Material"):
+		ad.Material = ad.Attributes["Material"]
+	}
+}

config.go

@@ -34,11 +34,19 @@ import (
 )
 
 const (
-	VERSION    string = "0.3.15"
+	VERSION    string = "0.3.16"
 	Baseuri    string = "https://www.kleinanzeigen.de"
 	Listuri    string = "/s-bestandsliste.html"
 	Defaultdir string = "."
 
+	/*
+		   Also possible: loop through .Attributes:
+
+		DefaultTemplate string = "Title: {{.Title}}\nPrice: {{.Price}}\nId: {{.ID}}\n" +
+			"Category: {{.Category}}\n{{ range $key,$val := .Attributes }}{{ $key }}: {{ $val }}\n{{ end }}" +
+			"Created: {{.Created}}\nExpire: {{.Expire}}\n\n{{.Text}}\n"
+
+	*/
 	DefaultTemplate string = "Title: {{.Title}}\nPrice: {{.Price}}\nId: {{.ID}}\n" +
 		"Category: {{.Category}}\nCondition: {{.Condition}}\nType: {{.Type}}\nColor: {{.Color}}\n" +
 		"Created: {{.Created}}\nExpire: {{.Expire}}\n\n{{.Text}}\n"

example.conf

@@ -15,17 +15,31 @@ loglevel = "verbose"
 # create it. must be a quoted string.
 outdir = "test"
 
-# template for  stored adlistings.  To enable  it, remove  the comment
-# chars up until the last #"""
-#template="""
-#Title: {{.Title}}
-#Price: {{.Price}}
-#Id: {{.Id}}
-#Category: {{.Category}}
-#Condition: {{.Condition}}
-#Type: {{.Type}}
-#Created: {{.Created}}
+# template for  stored adlistings.
+template="""
+Title: {{.Title}}
+Price: {{.Price}}
+Id: {{.Id}}
+Category: {{.Category}}
+Condition: {{.Condition}}
+Type: {{.Type}}
+Created: {{.Created}}
 
-#{{.Text}}
-# """
+{{.Text}}
+"""
 
+# Ads may contain more attributes than just the Condition. To print
+# all attributes, loop over all of them:
+
+template="""
+Title: {{.Title}}
+Price: {{.Price}}
+Id: {{.Id}}
+Category: {{.Category}}
+{{ range $key,$val := .Attributes }}{{ $key }}: {{ $val }}
+{{ end }}
+Type: {{.Type}}
+Created: {{.Created}}
+
+{{.Text}}
+"""

kleingebaeck.1

@@ -133,7 +133,7 @@
 .\" ========================================================================
 .\"
 .IX Title "KLEINGEBAECK 1"
-.TH KLEINGEBAECK 1 "2025-02-06" "1" "User Commands"
+.TH KLEINGEBAECK 1 "2025-02-10" "1" "User Commands"
 .\" For nroff, turn off justification.  Always turn off hyphenation; it makes
 .\" way too many mistakes in technical documents.
 .if n .ad l
@@ -174,7 +174,7 @@ well.   We    use   \s-1TOML\s0   as   our    configuration   language.   See
 .PP
 Format is pretty simple:
 .PP
-.Vb 10
+.Vb 11
 \&    user = 1010101
 \&    loglevel = verbose
 \&    outdir = "test"
@@ -185,8 +185,6 @@ Format is pretty simple:
 \&    Id: {{.ID}}
 \&    Category: {{.Category}}
 \&    Condition: {{.Condition}}
-\&    Type: {{.Type}}
-\&    Color: {{.Color}}
 \&    Created: {{.Created}}
 \&
 \&    {{.Text}}

kleingebaeck.go

@@ -46,8 +46,6 @@ CONFIGURATION
         Id: {{.ID}}
         Category: {{.Category}}
         Condition: {{.Condition}}
-        Type: {{.Type}}
-        Color: {{.Color}}
         Created: {{.Created}}
 
         {{.Text}}

kleingebaeck.pod

@@ -46,8 +46,6 @@ Format is pretty simple:
     Id: {{.ID}}
     Category: {{.Category}}
     Condition: {{.Condition}}
-    Type: {{.Type}}
-    Color: {{.Color}}
     Created: {{.Created}}
 
     {{.Text}}

main_test.go

@@ -283,6 +283,8 @@ var adsrc = []AdConfig{
 		Text:      "Thing to sale",
 		Slug:      "second-ad",
 		Condition: "Gut",
+		Color:     "Lila",
+		Type:      "Schoki",
 		Created:   "Yesterday",
 		Images:    []string{"t/1.jpg", "t/2.jpg"},
 	},
@@ -294,6 +296,8 @@ var adsrc = []AdConfig{
 		Text:      "Thing to sale",
 		Slug:      "third-ad",
 		Condition: "In Ordnung",
+		Color:     "Blau",
+		Type:      "Auto",
 		Created:   "Yesterday",
 		Images:    []string{"t/1.jpg", "t/2.jpg"},
 	},
@@ -305,6 +309,8 @@ var adsrc = []AdConfig{
 		Text:      "Thing to sale",
 		Slug:      "fourth-ad",
 		Condition: "Neu",
+		Color:     "Rot",
+		Type:      "Spielzeut",
 		Created:   "Yesterday",
 		Images:    []string{"t/1.jpg", "t/2.jpg"},
 	},
@@ -316,6 +322,8 @@ var adsrc = []AdConfig{
 		Text:      "Thing to sale",
 		Slug:      "fifth-ad",
 		Condition: "Sehr Gut",
+		Color:     "Braun",
+		Type:      "Parteibuch",
 		Created:   "Yesterday",
 		Images:    []string{"t/1.jpg", "t/2.jpg"},
 	},
@@ -327,6 +335,8 @@ var adsrc = []AdConfig{
 		Text:      "Thing to sale",
 		Slug:      "sixth-ad",
 		Condition: "Sehr Gut",
+		Color:     "Silber",
+		Type:      "Ring",
 		Created:   "Yesterday",
 		Images:    []string{"t/1.jpg", "t/2.jpg"},
 	},
@@ -338,6 +348,8 @@ var adsrc = []AdConfig{
 		Text:      "Thing to sale",
 		Slug:      "seventh-ad",
 		Condition: "Sehr Gut",
+		Color:     "Gelpb",
+		Type:      "Schmuck",
 		Created:   "Yesterday",
 		Images:    []string{"t/1.png", "t/1.gif", "t/1.webp", "t/1.jpg"},
 	},

scrape.go

@@ -22,7 +22,6 @@ import (
 	"fmt"
 	"log/slog"
 	"path/filepath"
-	"slices"
 	"strconv"
 	"strings"
 	"time"
@@ -125,17 +124,7 @@ func ScrapeAd(fetch *Fetcher, uri string) error {
 		return fmt.Errorf("could not extract ad data from page, got empty struct")
 	}
 
-	for _, detail := range advertisement.Details {
-		switch {
-		case slices.Contains(CONDITIONS, detail):
-			advertisement.Condition = detail
-		case slices.Contains(COLORS, detail):
-			advertisement.Color = detail
-		default:
-			advertisement.Type = detail
-		}
-	}
-
+	advertisement.DecodeAttributes()
 	advertisement.CalculateExpire()
 
 	// prepare ad dir name