Add tag description.

server/api/tag.go

@@ -2,6 +2,7 @@ package api
 
 import (
 	"github.com/gofiber/fiber/v3"
+	"net/url"
 	"nysoure/server/model"
 	"nysoure/server/service"
 	"strconv"
@@ -65,11 +66,59 @@ func handleDeleteTag(c fiber.Ctx) error {
 	})
 }
 
+func handleSetTagDescription(c fiber.Ctx) error {
+	uid, ok := c.Locals("uid").(uint)
+	if !ok {
+		return model.NewUnAuthorizedError("You must be logged in to set tag description")
+	}
+	id, err := strconv.Atoi(c.Params("id"))
+	if err != nil {
+		return model.NewRequestError("Invalid tag ID")
+	}
+	description := c.FormValue("description")
+	if description == "" {
+		return model.NewRequestError("Description is required")
+	}
+	description = strings.TrimSpace(description)
+	t, err := service.SetTagDescription(uid, uint(id), description)
+	if err != nil {
+		return err
+	}
+	return c.Status(fiber.StatusOK).JSON(model.Response[model.TagView]{
+		Success: true,
+		Data:    *t,
+		Message: "Tag description updated successfully",
+	})
+}
+
+func handleGetTagByName(c fiber.Ctx) error {
+	name := c.Params("name")
+	if name == "" {
+		return model.NewRequestError("Tag name is required")
+	}
+	name, err := url.PathUnescape(name)
+	if err != nil {
+		return model.NewRequestError("Invalid tag name format")
+	}
+	name = strings.TrimSpace(name)
+	t, err := service.GetTagByName(name)
+	if err != nil {
+		return err
+	}
+	return c.Status(fiber.StatusOK).JSON(model.Response[model.TagView]{
+		Success: true,
+		Data:    *t,
+		Message: "Tag retrieved successfully",
+	})
+}
+
 func AddTagRoutes(api fiber.Router) {
 	tag := api.Group("/tag")
 	{
 		tag.Post("/", handleCreateTag)
 		tag.Get("/search", handleSearchTag)
 		tag.Delete("/:id", handleDeleteTag)
+		tag.Put("/:id/description", handleSetTagDescription)
+		tag.Get("/:name", handleGetTagByName)
 	}
 }