3 files changed, 80 insertions, 0 deletions
diff --git a/utils/format/image.go b/utils/format/image.go
new file mode 100644
index 0000000..b68271c
--- /dev/null
+++ b/utils/format/image.go
@@ -0,0 +1,14 @@
+package format
+
+import (
+	"imageboard/config"
+	"strings"
+)
+
+func GetCDNURL() string {
+	cdnURL := strings.TrimRight(config.S3.PublicURL, "/") + "/" + config.S3.BucketName
+	if config.S3.FolderPath != "" {
+		cdnURL += "/" + config.S3.FolderPath
+	}
+	return cdnURL
+}
diff --git a/utils/format/numbers.go b/utils/format/numbers.go
index 8f546f1..b1561e5 100644
--- a/utils/format/numbers.go
+++ b/utils/format/numbers.go
@@ -18,3 +18,12 @@ func Int64ToString(value int64) string {
 	}
 	return fmt.Sprintf("%d", value)
 }
+
+func StringToUint(value string) (uint, error) {
+	var uintValue uint
+	_, err := fmt.Sscanf(value, "%d", &uintValue)
+	if err != nil {
+		return 0, fmt.Errorf("invalid string to uint conversion: %w", err)
+	}
+	return uintValue, nil
+}
diff --git a/utils/handlers/req_map.go b/utils/handlers/req_map.go
new file mode 100644
index 0000000..2b1145c
--- /dev/null
+++ b/utils/handlers/req_map.go
@@ -0,0 +1,57 @@
+package handlers
+
+import (
+	"imageboard/config"
+	"strings"
+)
+
+func ExtractRatingsAndMap(queryParams []config.QueryParam) ([]config.Rating, map[string]bool) {
+	var ratings []config.Rating
+	ratingsMap := map[string]bool{}
+	for _, param := range queryParams {
+		if param.Key == "rating" {
+			switch strings.ToLower(param.Value) {
+			case "safe":
+				ratings = append(ratings, config.RatingSafe)
+				ratingsMap["Safe"] = true
+			case "questionable":
+				ratings = append(ratings, config.RatingQuestionable)
+				ratingsMap["Questionable"] = true
+			case "sensitive":
+				ratings = append(ratings, config.RatingSensitive)
+				ratingsMap["Sensitive"] = true
+			case "explicit":
+				ratings = append(ratings, config.RatingExplicit)
+				ratingsMap["Explicit"] = true
+			}
+		}
+	}
+	if len(ratings) == 0 {
+		ratings = []config.Rating{
+			config.RatingSafe,
+			config.RatingQuestionable,
+			config.RatingSensitive,
+		}
+		ratingsMap["Safe"] = true
+		ratingsMap["Questionable"] = true
+		ratingsMap["Sensitive"] = true
+	}
+	return ratings, ratingsMap
+}
+
+func ExtractQueryTags(queryParams []config.QueryParam) (string, []string) {
+	for _, param := range queryParams {
+		if param.Key == "tags" {
+			tags := strings.TrimSpace(param.Value)
+			if tags == "" {
+				return "", nil
+			}
+			tagList := strings.Split(tags, ",")
+			for i := range tagList {
+				tagList[i] = strings.TrimSpace(tagList[i])
+			}
+			return tags, tagList
+		}
+	}
+	return "", nil
+}