Sync from /srv/compose/unified-media-manager

internal/cardigann/selector.go

@@ -0,0 +1,84 @@
+package cardigann
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/PuerkitoBio/goquery"
+)
+
+// ExtractField evaluates a CSS selector block against a goquery selection
+// and returns the extracted (and filtered) string value.
+func ExtractField(selection *goquery.Selection, block SelectorBlock) (string, error) {
+	var val string
+
+	// If Text is set, it's a static text value
+	if block.Text != "" {
+		val = block.Text
+		return applyFiltersToValue(val, block)
+	}
+
+	// If no selector, return empty
+	if block.Selector == "" {
+		return "", nil
+	}
+
+	// Find matching elements
+	sub := selection.Find(block.Selector)
+	if sub.Length() == 0 {
+		return "", nil
+	}
+
+	// Remove child elements matching Remove selector
+	if block.Remove != "" {
+		sub.Find(block.Remove).Remove()
+	}
+
+	// If Case patterns defined, iterate and return matching value
+	if len(block.Case) > 0 {
+		for pattern, result := range block.Case {
+			// Check if any matched element matches the pattern
+			found := false
+			sub.EachWithBreak(func(i int, s *goquery.Selection) bool {
+				text := strings.TrimSpace(s.Text())
+				if text == pattern || strings.Contains(text, pattern) {
+					found = true
+					val = result
+					return false
+				}
+				return true
+			})
+			if found {
+				return applyFiltersToValue(val, block)
+			}
+		}
+		return "", nil
+	}
+
+	// If Attribute specified, get attribute from first element
+	if block.Attribute != "" {
+		attrVal, exists := sub.Attr(block.Attribute)
+		if !exists {
+			return "", nil
+		}
+		val = attrVal
+	} else {
+		// Get trimmed text content
+		val = strings.TrimSpace(sub.First().Text())
+	}
+
+	return applyFiltersToValue(val, block)
+}
+
+// applyFiltersToValue applies the filter chain to a value.
+func applyFiltersToValue(val string, block SelectorBlock) (string, error) {
+	if len(block.Filters) == 0 {
+		return val, nil
+	}
+
+	result, err := ApplyFilters(val, block.Filters)
+	if err != nil {
+		return val, fmt.Errorf("filter chain error: %w", err)
+	}
+	return result, nil
+}