Implemented Badge Management in administration panel (#29798)

Co-authored-by: Diogo Vicente <diogo.m.s.vicente@tecnico.ulisboa.pt>

services/user/badge.go

@@ -0,0 +1,75 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package user
+
+import (
+	"context"
+	"fmt"
+
+	"code.gitea.io/gitea/models/db"
+	user_model "code.gitea.io/gitea/models/user"
+)
+
+// RenameBadge changes the slug of a badge.
+func RenameBadge(ctx context.Context, b *user_model.Badge, newSlug string) error {
+	if newSlug == b.Slug {
+		return nil
+	}
+
+	olderSlug := b.Slug
+
+	ctx, committer, err := db.TxContext(ctx)
+	if err != nil {
+		return err
+	}
+	defer committer.Close()
+
+	isExist, err := user_model.IsBadgeExist(ctx, b.ID, newSlug)
+	if err != nil {
+		return err
+	}
+	if isExist {
+		return user_model.ErrBadgeAlreadyExist{
+			Slug: newSlug,
+		}
+	}
+
+	b.Slug = newSlug
+	if err := user_model.UpdateBadge(ctx, b); err != nil {
+		b.Slug = olderSlug
+		return err
+	}
+	if err = committer.Commit(); err != nil {
+		b.Slug = olderSlug
+		return err
+	}
+	return nil
+}
+
+// DeleteBadge completely and permanently deletes everything of a badge
+func DeleteBadge(ctx context.Context, b *user_model.Badge, purge bool) error {
+	if purge {
+		err := user_model.DeleteUserBadgeRecord(ctx, b)
+		if err != nil {
+			return err
+		}
+	}
+
+	ctx, committer, err := db.TxContext(ctx)
+	if err != nil {
+		return err
+	}
+	defer committer.Close()
+
+	if err := user_model.DeleteBadge(ctx, b); err != nil {
+		return fmt.Errorf("DeleteBadge: %w", err)
+	}
+
+	if err := committer.Commit(); err != nil {
+		return err
+	}
+	_ = committer.Close()
+
+	return nil
+}