Add tag type and tag alias.

frontend/src/components/badge.tsx

@@ -1,7 +1,7 @@
 import {ReactNode} from "react";
 
 export default function Badge({children, className, onClick }: { children: ReactNode, className?: string, onClick?: () => void }) {
-  return <span className={`badge badge-primary text-sm ${className}`} onClick={onClick}>{children}</span>
+  return <span className={`badge ${!className?.includes("badge-") && "badge-primary"} ${className}`} onClick={onClick}>{children}</span>
 }
 
 export function BadgeAccent({children, className, onClick }: { children: ReactNode, className?: string, onClick?: () => void }) {

frontend/src/components/tag_input.tsx

@@ -0,0 +1,142 @@
+import {Tag} from "../network/models.ts";
+import {useRef, useState} from "react";
+import {useTranslation} from "react-i18next";
+import {network} from "../network/network.ts";
+import {LuInfo} from "react-icons/lu";
+import {MdSearch} from "react-icons/md";
+
+export default function TagInput({ onAdd, mainTag }: { onAdd: (tag: Tag) => void, mainTag?: boolean }) {
+  const [keyword, setKeyword] = useState<string>("")
+  const [tags, setTags] = useState<Tag[]>([])
+  const [error, setError] = useState<string | null>(null)
+  const [isLoading, setLoading] = useState(false)
+
+  const debounce = useRef(new Debounce(500))
+
+  const { t } = useTranslation();
+
+  const searchTags = async (keyword: string) => {
+    if (keyword.length === 0) {
+      return
+    }
+    setLoading(true)
+    setTags([])
+    setError(null)
+    const res = await network.searchTags(keyword, mainTag)
+    if (!res.success) {
+      setError(res.message)
+      setLoading(false)
+      return
+    }
+    setTags(res.data!)
+    setLoading(false)
+  }
+
+  const handleChange = async (v: string) => {
+    setKeyword(v)
+    setTags([])
+    setError(null)
+    if (v.length !== 0) {
+      setLoading(true)
+      debounce.current.run(() => searchTags(v))
+    } else {
+      setLoading(false)
+      debounce.current.cancel()
+    }
+  }
+
+  const handleCreateTag = async (name: string) => {
+    setLoading(true)
+    const res = await network.createTag(name)
+    if (!res.success) {
+      setError(res.message)
+      setLoading(false)
+      return
+    }
+    onAdd(res.data!)
+    setKeyword("")
+    setTags([])
+    setLoading(false)
+    const input = document.getElementById("search_tags_input") as HTMLInputElement
+    input.blur()
+  }
+
+  let dropdownContent
+  if (error) {
+    dropdownContent = <div className="alert alert-error my-2">
+      <svg xmlns="http://www.w3.org/2000/svg" className="h-6 w-6 shrink-0 stroke-current" fill="none"
+           viewBox="0 0 24 24">
+        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2"
+              d="M10 14l2-2m0 0l2-2m-2 2l-2-2m2 2l2 2m7-2a9 9 0 11-18 0 9 9 0 0118 0z" />
+      </svg>
+      <span>{error}</span>
+    </div>
+  } else if (!keyword) {
+    dropdownContent = <div className="flex flex-row py-2 px-4">
+      <LuInfo size={20} />
+      <span className={"w-2"} />
+      <span className={"flex-1"}>{t("Please enter a search keyword")}</span>
+    </div>
+  } else if (isLoading) {
+    dropdownContent = <div className="flex flex-row py-2 px-4">
+      <span className={"loading loading-spinner loading-sm"}></span>
+      <span className={"w-2"} />
+      <span className={"flex-1"}>{t("Searching...")}</span>
+    </div>
+  } else {
+    const haveExactMatch = tags.find((t) => t.name === keyword) !== undefined
+    dropdownContent = <>
+      {
+        tags.map((t) => {
+          return <li key={t.id} onClick={() => {
+            onAdd(t);
+            setKeyword("")
+            setTags([])
+            const input = document.getElementById("search_tags_input") as HTMLInputElement
+            input.blur()
+          }}><a>{t.name}</a></li>
+        })
+      }
+      {
+        !haveExactMatch && <li onClick={() => {
+          handleCreateTag(keyword)
+        }}><a>{t("Create Tag")}: {keyword}</a></li>
+      }
+    </>
+  }
+
+  return <div className={"dropdown dropdown-end"}>
+    <label className="input">
+      <MdSearch size={18}/>
+      <input autoComplete={"off"} id={"search_tags_input"} tabIndex={0} type="text" className="grow" placeholder={t("Search Tags")} value={keyword} onChange={(e) => handleChange(e.target.value)} />
+    </label>
+    <ul tabIndex={0} className="dropdown-content menu bg-base-100 rounded-box z-1 w-52 p-2 shadow mt-2 border border-base-300">
+      {dropdownContent}
+    </ul>
+  </div>
+}
+
+class Debounce {
+  private timer: number | null = null
+  private readonly delay: number
+
+  constructor(delay: number) {
+    this.delay = delay
+  }
+
+  run(callback: () => void) {
+    if (this.timer) {
+      clearTimeout(this.timer)
+    }
+    this.timer = setTimeout(() => {
+      callback()
+    }, this.delay)
+  }
+
+  cancel() {
+    if (this.timer) {
+      clearTimeout(this.timer)
+      this.timer = null
+    }
+  }
+}

frontend/src/network/models.ts

@@ -31,6 +31,8 @@ export interface Tag {
   id: number;
   name: string;
   description: string;
+  type: string;
+  aliases: string[];
 }
 
 export interface CreateResourceParams {

frontend/src/network/network.ts

@@ -284,11 +284,12 @@ class Network {
     }
   }
 
-  async searchTags(keyword: string): Promise<Response<Tag[]>> {
+  async searchTags(keyword: string, mainTag?: boolean): Promise<Response<Tag[]>> {
     try {
       const response = await axios.get(`${this.apiBaseUrl}/tag/search`, {
         params: {
-          keyword
+          keyword,
+          mainTag
         }
       })
       return response.data
@@ -329,10 +330,12 @@ class Network {
     }
   }
 
-  async setTagDescription(tagId: number, description: string): Promise<Response<Tag>> {
+  async setTagInfo(tagId: number, description: string, aliasOf: number | null, type: string): Promise<Response<Tag>> {
     try {
-      const response = await axios.putForm(`${this.apiBaseUrl}/tag/${tagId}/description`, {
-        description
+      const response = await axios.putForm(`${this.apiBaseUrl}/tag/${tagId}/info`, {
+        description,
+        alias_of: aliasOf,
+        type,
       })
       return response.data
     } catch (e: any) {

frontend/src/pages/edit_resource_page.tsx

@@ -1,14 +1,14 @@
-import { useEffect, useRef, useState } from "react";
-import {MdAdd, MdClose, MdDelete, MdOutlineInfo, MdSearch} from "react-icons/md";
+import { useEffect, useState } from "react";
+import {MdAdd, MdClose, MdDelete, MdOutlineInfo} from "react-icons/md";
 import { Tag } from "../network/models.ts";
 import { network } from "../network/network.ts";
-import { LuInfo } from "react-icons/lu";
 import {useNavigate, useParams} from "react-router";
 import showToast from "../components/toast.ts";
 import { useTranslation } from "react-i18next";
 import { app } from "../app.ts";
 import { ErrorAlert } from "../components/alert.tsx";
 import Loading from "../components/loading.tsx";
+import TagInput from "../components/tag_input.tsx";
 
 export default function EditResourcePage() {
   const [title, setTitle] = useState<string>("")
@@ -256,139 +256,3 @@ export default function EditResourcePage() {
     </div>
   </div>
 }
-
-function TagInput({ onAdd }: { onAdd: (tag: Tag) => void }) {
-  const [keyword, setKeyword] = useState<string>("")
-  const [tags, setTags] = useState<Tag[]>([])
-  const [error, setError] = useState<string | null>(null)
-  const [isLoading, setLoading] = useState(false)
-
-  const debounce = useRef(new Debounce(500))
-
-  const { t } = useTranslation();
-
-  const searchTags = async (keyword: string) => {
-    if (keyword.length === 0) {
-      return
-    }
-    setLoading(true)
-    setTags([])
-    setError(null)
-    const res = await network.searchTags(keyword)
-    if (!res.success) {
-      setError(res.message)
-      setLoading(false)
-      return
-    }
-    setTags(res.data!)
-    setLoading(false)
-  }
-
-  const handleChange = async (v: string) => {
-    setKeyword(v)
-    setTags([])
-    setError(null)
-    if (v.length !== 0) {
-      setLoading(true)
-      debounce.current.run(() => searchTags(v))
-    } else {
-      setLoading(false)
-      debounce.current.cancel()
-    }
-  }
-
-  const handleCreateTag = async (name: string) => {
-    setLoading(true)
-    const res = await network.createTag(name)
-    if (!res.success) {
-      setError(res.message)
-      setLoading(false)
-      return
-    }
-    onAdd(res.data!)
-    setKeyword("")
-    setTags([])
-    setLoading(false)
-    const input = document.getElementById("search_tags_input") as HTMLInputElement
-    input.blur()
-  }
-
-  let dropdownContent
-  if (error) {
-    dropdownContent = <div className="alert alert-error my-2">
-      <svg xmlns="http://www.w3.org/2000/svg" className="h-6 w-6 shrink-0 stroke-current" fill="none"
-           viewBox="0 0 24 24">
-        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2"
-              d="M10 14l2-2m0 0l2-2m-2 2l-2-2m2 2l2 2m7-2a9 9 0 11-18 0 9 9 0 0118 0z" />
-      </svg>
-      <span>{error}</span>
-    </div>
-  } else if (!keyword) {
-    dropdownContent = <div className="flex flex-row py-2 px-4">
-      <LuInfo size={20} />
-      <span className={"w-2"} />
-      <span className={"flex-1"}>{t("Please enter a search keyword")}</span>
-    </div>
-  } else if (isLoading) {
-    dropdownContent = <div className="flex flex-row py-2 px-4">
-      <span className={"loading loading-spinner loading-sm"}></span>
-      <span className={"w-2"} />
-      <span className={"flex-1"}>{t("Searching...")}</span>
-    </div>
-  } else {
-    const haveExactMatch = tags.find((t) => t.name === keyword) !== undefined
-    dropdownContent = <>
-      {
-        tags.map((t) => {
-          return <li key={t.id} onClick={() => {
-            onAdd(t);
-            setKeyword("")
-            setTags([])
-            const input = document.getElementById("search_tags_input") as HTMLInputElement
-            input.blur()
-          }}><a>{t.name}</a></li>
-        })
-      }
-      {
-        !haveExactMatch && <li onClick={() => {
-          handleCreateTag(keyword)
-        }}><a>{t("Create Tag")}: {keyword}</a></li>
-      }
-    </>
-  }
-
-  return <div className={"dropdown dropdown-end"}>
-    <label className="input">
-      <MdSearch size={18}/>
-      <input autoComplete={"off"} id={"search_tags_input"} tabIndex={0} type="text" className="grow" placeholder={t("Search Tags")} value={keyword} onChange={(e) => handleChange(e.target.value)} />
-    </label>
-    <ul tabIndex={0} className="dropdown-content menu bg-base-100 rounded-box z-1 w-52 p-2 shadow mt-2 border border-base-300">
-      {dropdownContent}
-    </ul>
-  </div>
-}
-
-class Debounce {
-  private timer: number | null = null
-  private readonly delay: number
-
-  constructor(delay: number) {
-    this.delay = delay
-  }
-
-  run(callback: () => void) {
-    if (this.timer) {
-      clearTimeout(this.timer)
-    }
-    this.timer = setTimeout(() => {
-      callback()
-    }, this.delay)
-  }
-
-  cancel() {
-    if (this.timer) {
-      clearTimeout(this.timer)
-      this.timer = null
-    }
-  }
-}

frontend/src/pages/publish_page.tsx

@@ -1,14 +1,14 @@
-import { useEffect, useRef, useState } from "react";
-import {MdAdd, MdClose, MdDelete, MdOutlineInfo, MdSearch} from "react-icons/md";
+import { useEffect, useState } from "react";
+import {MdAdd, MdClose, MdDelete, MdOutlineInfo} from "react-icons/md";
 import { Tag } from "../network/models.ts";
 import { network } from "../network/network.ts";
-import { LuInfo } from "react-icons/lu";
 import { useNavigate } from "react-router";
 import showToast from "../components/toast.ts";
 import { useTranslation } from "react-i18next";
 import { app } from "../app.ts";
 import { ErrorAlert } from "../components/alert.tsx";
 import {useAppContext} from "../components/AppContext.tsx";
+import TagInput from "../components/tag_input.tsx";
 
 export default function PublishPage() {
   const [title, setTitle] = useState<string>("")
@@ -231,140 +231,4 @@ export default function PublishPage() {
       </button>
     </div>
   </div>
-}
-
-function TagInput({ onAdd }: { onAdd: (tag: Tag) => void }) {
-  const [keyword, setKeyword] = useState<string>("")
-  const [tags, setTags] = useState<Tag[]>([])
-  const [error, setError] = useState<string | null>(null)
-  const [isLoading, setLoading] = useState(false)
-
-  const debounce = useRef(new Debounce(500))
-
-  const { t } = useTranslation();
-
-  const searchTags = async (keyword: string) => {
-    if (keyword.length === 0) {
-      return
-    }
-    setLoading(true)
-    setTags([])
-    setError(null)
-    const res = await network.searchTags(keyword)
-    if (!res.success) {
-      setError(res.message)
-      setLoading(false)
-      return
-    }
-    setTags(res.data!)
-    setLoading(false)
-  }
-
-  const handleChange = async (v: string) => {
-    setKeyword(v)
-    setTags([])
-    setError(null)
-    if (v.length !== 0) {
-      setLoading(true)
-      debounce.current.run(() => searchTags(v))
-    } else {
-      setLoading(false)
-      debounce.current.cancel()
-    }
-  }
-
-  const handleCreateTag = async (name: string) => {
-    setLoading(true)
-    const res = await network.createTag(name)
-    if (!res.success) {
-      setError(res.message)
-      setLoading(false)
-      return
-    }
-    onAdd(res.data!)
-    setKeyword("")
-    setTags([])
-    setLoading(false)
-    const input = document.getElementById("search_tags_input") as HTMLInputElement
-    input.blur()
-  }
-
-  let dropdownContent
-  if (error) {
-    dropdownContent = <div className="alert alert-error my-2">
-      <svg xmlns="http://www.w3.org/2000/svg" className="h-6 w-6 shrink-0 stroke-current" fill="none"
-        viewBox="0 0 24 24">
-        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2"
-          d="M10 14l2-2m0 0l2-2m-2 2l-2-2m2 2l2 2m7-2a9 9 0 11-18 0 9 9 0 0118 0z" />
-      </svg>
-      <span>{error}</span>
-    </div>
-  } else if (!keyword) {
-    dropdownContent = <div className="flex flex-row py-2 px-4">
-      <LuInfo size={20} />
-      <span className={"w-2"} />
-      <span className={"flex-1"}>{t("Please enter a search keyword")}</span>
-    </div>
-  } else if (isLoading) {
-    dropdownContent = <div className="flex flex-row py-2 px-4">
-      <span className={"loading loading-spinner loading-sm"}></span>
-      <span className={"w-2"} />
-      <span className={"flex-1"}>{t("Searching...")}</span>
-    </div>
-  } else {
-    const haveExactMatch = tags.find((t) => t.name === keyword) !== undefined
-    dropdownContent = <>
-      {
-        tags.map((t) => {
-          return <li key={t.id} onClick={() => {
-            onAdd(t);
-            setKeyword("")
-            setTags([])
-            const input = document.getElementById("search_tags_input") as HTMLInputElement
-            input.blur()
-          }}><a>{t.name}</a></li>
-        })
-      }
-      {
-        !haveExactMatch && <li onClick={() => {
-          handleCreateTag(keyword)
-        }}><a>{t("Create Tag")}: {keyword}</a></li>
-      }
-    </>
-  }
-
-  return <div className={"dropdown dropdown-end"}>
-    <label className="input">
-      <MdSearch size={18}/>
-      <input autoComplete={"off"} id={"search_tags_input"} tabIndex={0} type="text" className="grow" placeholder={t("Search Tags")} value={keyword} onChange={(e) => handleChange(e.target.value)} />
-    </label>
-    <ul tabIndex={0} className="dropdown-content menu bg-base-100 rounded-box z-1 w-52 p-2 shadow mt-2 border border-base-300">
-      {dropdownContent}
-    </ul>
-  </div>
-}
-
-class Debounce {
-  private timer: number | null = null
-  private readonly delay: number
-
-  constructor(delay: number) {
-    this.delay = delay
-  }
-
-  run(callback: () => void) {
-    if (this.timer) {
-      clearTimeout(this.timer)
-    }
-    this.timer = setTimeout(() => {
-      callback()
-    }, this.delay)
-  }
-
-  cancel() {
-    if (this.timer) {
-      clearTimeout(this.timer)
-      this.timer = null
-    }
-  }
 }

frontend/src/pages/tagged_resources_page.tsx

@@ -8,6 +8,9 @@ import {Tag} from "../network/models.ts";
 import Button from "../components/button.tsx";
 import Markdown from "react-markdown";
 import {app} from "../app.ts";
+import Input, {TextArea} from "../components/input.tsx";
+import TagInput from "../components/tag_input.tsx";
+import Badge from "../components/badge.tsx";
 
 export default function TaggedResourcesPage() {
   const { tag: tagName } = useParams()
@@ -40,7 +43,7 @@ export default function TaggedResourcesPage() {
   return <div>
     <div className={"flex items-center"}>
       <h1 className={"text-2xl pt-6 pb-2 px-4 font-bold flex-1"}>
-        {tagName}
+        {tag?.name ?? tagName}
       </h1>
       {
         tag && <EditTagButton tag={tag} onEdited={(t) => {
@@ -48,6 +51,14 @@ export default function TaggedResourcesPage() {
         }} />
       }
     </div>
+    {tag?.type && <h2 className={"text-base-content/60 ml-2 text-xl pl-2 mb-2"}>{tag.type}</h2>}
+    <div className={"px-3"}>
+      {
+        (tag?.aliases ?? []).map((e) => {
+          return <Badge className={"m-1 badge-outline badge-soft"}>{e}</Badge>
+        })
+      }
+    </div>
     {
       (tag?.description && app.canUpload()) && <article className={"px-4 py-2"}>
         <Markdown>
@@ -63,6 +74,9 @@ export default function TaggedResourcesPage() {
 
 function EditTagButton({tag, onEdited}: { tag: Tag, onEdited: (t: Tag) => void }) {
   const [description, setDescription] = useState(tag.description);
+  const [isAlias, setIsAlias] = useState(false);
+  const [aliasOf, setAliasOf] = useState<Tag | null>(null);
+  const [type, setType] = useState(tag.type);
   const [isLoading, setIsLoading] = useState(false);
   const [error, setError] = useState<string | null>(null);
   const { t } = useTranslation();
@@ -72,16 +86,13 @@ function EditTagButton({tag, onEdited}: { tag: Tag, onEdited: (t: Tag) => void }
   }, [tag.description]);
 
   const submit = async () => {
-    if (description === tag.description) {
-      return;
-    }
     if (description && description.length > 256) {
       setError(t("Description is too long"));
       return;
     }
     setIsLoading(true);
     setError(null);
-    const res = await network.setTagDescription(tag.id, description);
+    const res = await network.setTagInfo(tag.id, description, aliasOf?.id ?? null, type);
     setIsLoading(false);
     if (res.success) {
       const dialog = document.getElementById("edit_tag_dialog") as HTMLDialogElement;
@@ -98,11 +109,34 @@ function EditTagButton({tag, onEdited}: { tag: Tag, onEdited: (t: Tag) => void }
     dialog.showModal();
     }}>{t("Edit")}</Button>
     <dialog id="edit_tag_dialog" className="modal">
-      <div className="modal-box">
+      <div className="modal-box" style={{
+        overflowY: "initial"
+      }}>
         <h3 className="font-bold text-lg">{t("Edit Tag")}</h3>
-        <p className="py-2 text-sm">{t("Set the description of the tag.")}</p>
-        <p className="pb-3 text-sm">{t("Use markdown format.")}</p>
-        <textarea className="textarea h-24 w-full resize-none" value={description} onChange={(e) => setDescription(e.target.value)}/>
+        <div className={"flex py-3"}>
+          <p className={"flex-1"}>The tag is an alias of another tag</p>
+          <input type="checkbox" className="toggle toggle-primary" checked={isAlias} onChange={(e) => {
+            setIsAlias(e.target.checked);
+          }}/>
+        </div>
+
+        {
+          isAlias ? <>
+              {
+                aliasOf && <div className={"py-2 border border-base-300 rounded-3xl mt-2 px-4 flex mb-4"}>
+                  <p className={"flex-1"}>Alias Of: </p>
+                  <Badge>{aliasOf.name}</Badge>
+                </div>
+              }
+            <TagInput mainTag={true} onAdd={(tag: Tag) => {
+              setAliasOf(tag);
+            }}/>
+          </> : <>
+            <Input value={type} onChange={(e) => setType(e.target.value)} label={"Type"}/>
+            <TextArea label={"Description"} value={description} onChange={(e) => setDescription(e.target.value)}/>
+          </>
+        }
+
         {error && <ErrorAlert className={"mt-2"} message={error} />}
         <div className="modal-action">
           <form method="dialog">

server/api/tag.go

@@ -36,7 +36,9 @@ func handleSearchTag(c fiber.Ctx) error {
 		return model.NewRequestError("Keyword is required")
 	}
 	keyword = strings.TrimSpace(keyword)
-	tags, err := service.SearchTag(keyword)
+	mainTagStr := c.Query("main_tag")
+	mainTag := mainTagStr == "true" || mainTagStr == "1"
+	tags, err := service.SearchTag(keyword, mainTag)
 	if tags == nil {
 		tags = []model.TagView{}
 	}
@@ -66,7 +68,7 @@ func handleDeleteTag(c fiber.Ctx) error {
 	})
 }
 
-func handleSetTagDescription(c fiber.Ctx) error {
+func handleSetTagInfo(c fiber.Ctx) error {
 	uid, ok := c.Locals("uid").(uint)
 	if !ok {
 		return model.NewUnAuthorizedError("You must be logged in to set tag description")
@@ -76,11 +78,19 @@ func handleSetTagDescription(c fiber.Ctx) error {
 		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)
+	aliasOfStr := c.FormValue("alias_of")
+	var aliasOf *uint
+	if aliasOfStr != "" {
+		aliasID, err := strconv.Atoi(aliasOfStr)
+		if err != nil {
+			return model.NewRequestError("Invalid alias ID")
+		}
+		aliasUint := uint(aliasID)
+		aliasOf = &aliasUint
+	}
+	tagType := c.FormValue("type")
+	t, err := service.SetTagInfo(uid, uint(id), description, aliasOf, tagType)
 	if err != nil {
 		return err
 	}
@@ -118,7 +128,7 @@ func AddTagRoutes(api fiber.Router) {
 		tag.Post("/", handleCreateTag)
 		tag.Get("/search", handleSearchTag)
 		tag.Delete("/:id", handleDeleteTag)
-		tag.Put("/:id/description", handleSetTagDescription)
+		tag.Put("/:id/info", handleSetTagInfo)
 		tag.Get("/:name", handleGetTagByName)
 	}
 }

server/dao/resource.go

@@ -180,20 +180,37 @@ func searchWithKeyword(keyword string) ([]model.Resource, error) {
 	}
 	if len([]rune(keyword)) < 20 {
 		var tag model.Tag
-		if err := db.Where("name = ?", keyword).First(&tag).Error; err != nil {
+		var err error
+		if tag, err = GetTagByName(keyword); err != nil {
 			if !errors.Is(err, gorm.ErrRecordNotFound) {
 				return nil, err
 			}
 		} else {
-			if err := db.Model(&tag).Preload("Resources").Find(&tag).Error; err != nil {
+			if tag.AliasOf != nil {
+				tag, err = GetTagByID(*tag.AliasOf)
+				if err != nil {
+					return nil, err
+				}
+			}
+			var tagIds []uint
+			tagIds = append(tagIds, tag.ID)
+			for _, alias := range tag.Aliases {
+				tagIds = append(tagIds, alias.ID)
+			}
+			var resources []model.Resource
+			subQuery := db.Table("resource_tags").
+				Select("resource_id").
+				Where("tag_id IN ?", tagIds).
+				Group("resource_id")
+			if err := db.Where("id IN (?)", subQuery).Select("id", "title", "alternative_titles").Preload("Tags").Find(&resources).Error; err != nil {
 				return nil, err
 			}
-			return tag.Resources, nil
+			return resources, nil
 		}
 	}
 	if len([]rune(keyword)) < 80 {
 		var resources []model.Resource
-		if err := db.Where("title LIKE ?", "%"+keyword+"%").Or("alternative_titles LIKE ?", "%"+keyword+"%").Find(&resources).Error; err != nil {
+		if err := db.Where("title LIKE ?", "%"+keyword+"%").Or("alternative_titles LIKE ?", "%"+keyword+"%").Select("id", "title", "alternative_titles").Preload("Tags").Find(&resources).Error; err != nil {
 			return nil, err
 		}
 		return resources, nil
@@ -202,23 +219,53 @@ func searchWithKeyword(keyword string) ([]model.Resource, error) {
 }
 
 func GetResourceByTag(tagID uint, page int, pageSize int) ([]model.Resource, int, error) {
-	var tag model.Tag
-
-	total := db.Model(&model.Tag{
-		Model: gorm.Model{
-			ID: tagID,
-		},
-	}).Association("Resources").Count()
-
-	if err := db.Model(&model.Tag{}).Where("id = ?", tagID).Preload("Resources", func(tx *gorm.DB) *gorm.DB {
-		return tx.Offset((page - 1) * pageSize).Limit(pageSize).Preload("Tags").Preload("User").Preload("Images").Order("created_at DESC")
-	}).First(&tag).Error; err != nil {
+	tag, err := GetTagByID(tagID)
+	if err != nil {
 		return nil, 0, err
 	}
 
-	totalPages := (int(total) + pageSize - 1) / pageSize
+	if tag.AliasOf != nil {
+		tag, err = GetTagByID(*tag.AliasOf)
+		if err != nil {
+			return nil, 0, err
+		}
+	}
 
-	return tag.Resources, totalPages, nil
+	var tagIds []uint
+	tagIds = append(tagIds, tag.ID)
+	for _, alias := range tag.Aliases {
+		tagIds = append(tagIds, alias.ID)
+	}
+
+	var resources []model.Resource
+	var total int64
+
+	subQuery := db.Table("resource_tags").
+		Select("resource_id").
+		Where("tag_id IN ?", tagIds).
+		Group("resource_id")
+
+	if err := db.Model(&model.Resource{}).
+		Where("id IN (?)", subQuery).
+		Count(&total).Error; err != nil {
+		return nil, 0, err
+	}
+
+	if err := db.Where("id IN (?)", subQuery).
+		Offset((page - 1) * pageSize).
+		Limit(pageSize).
+		Preload("User").
+		Preload("Images").
+		Preload("Tags").
+		Preload("Files").
+		Order("created_at DESC").
+		Find(&resources).Error; err != nil {
+		return nil, 0, err
+	}
+
+	totalPages := (total + int64(pageSize) - 1) / int64(pageSize)
+
+	return resources, int(totalPages), nil
 }
 
 func ExistsResource(id uint) (bool, error) {

server/dao/tag.go

@@ -16,10 +16,14 @@ func CreateTag(tag string) (model.Tag, error) {
 	return t, nil
 }
 
-func SearchTag(keyword string) ([]model.Tag, error) {
+func SearchTag(keyword string, mainTag bool) ([]model.Tag, error) {
 	// Search for a tag by its name in the database
 	var t []model.Tag
-	if err := db.Model(&model.Tag{}).Where("name Like ?", "%"+keyword+"%").Limit(10).Find(&t).Error; err != nil {
+	query := db.Model(&model.Tag{}).Where("name Like ?", "%"+keyword+"%")
+	if mainTag {
+		query = query.Where("alias_of IS NULL")
+	}
+	if err := query.Limit(10).Find(&t).Error; err != nil {
 		return nil, err
 	}
 	return t, nil
@@ -38,7 +42,7 @@ func DeleteTag(id uint) error {
 func GetTagByID(id uint) (model.Tag, error) {
 	// Retrieve a tag by its ID from the database
 	var t model.Tag
-	if err := db.First(&t, id).Error; err != nil {
+	if err := db.Preload("Aliases").First(&t, id).Error; err != nil {
 		if errors.Is(err, gorm.ErrRecordNotFound) {
 			return model.Tag{}, model.NewNotFoundError("Tag not found")
 		}
@@ -50,7 +54,7 @@ func GetTagByID(id uint) (model.Tag, error) {
 func GetTagByName(name string) (model.Tag, error) {
 	// Retrieve a tag by its name from the database
 	var t model.Tag
-	if err := db.Where("name = ?", name).First(&t).Error; err != nil {
+	if err := db.Preload("Aliases").Where("name = ?", name).First(&t).Error; err != nil {
 		if errors.Is(err, gorm.ErrRecordNotFound) {
 			return model.Tag{}, model.NewNotFoundError("Tag not found")
 		}
@@ -59,8 +63,14 @@ func GetTagByName(name string) (model.Tag, error) {
 	return t, nil
 }
 
-func SetTagDescription(id uint, description string) error {
-	if err := db.Model(model.Tag{}).Where("id = ?", id).Update("description", description).Error; err != nil {
+func SetTagInfo(id uint, description string, aliasOf *uint, tagType string) error {
+	t := model.Tag{Model: gorm.Model{
+		ID: id,
+	}, Description: description, Type: tagType, AliasOf: aliasOf}
+	if err := db.Model(&t).Updates(t).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return model.NewNotFoundError("Tag not found")
+		}
 		return err
 	}
 	return nil

server/model/tag.go

@@ -6,19 +6,30 @@ type Tag struct {
 	gorm.Model
 	Name        string `gorm:"unique"`
 	Description string
+	AliasOf     *uint `gorm:"default:NULL"` // Foreign key for aliasing, can be NULL
+	Type        string
 	Resources   []Resource `gorm:"many2many:resource_tags;"`
+	Aliases     []Tag      `gorm:"foreignKey:AliasOf;references:ID"`
 }
 
 type TagView struct {
-	ID          uint   `json:"id"`
-	Name        string `json:"name"`
-	Description string `json:"description"`
+	ID          uint     `json:"id"`
+	Name        string   `json:"name"`
+	Description string   `json:"description"`
+	Type        string   `json:"type"`
+	Aliases     []string `json:"aliases"`
 }
 
 func (t *Tag) ToView() *TagView {
+	aliases := make([]string, 0, len(t.Aliases))
+	for _, alias := range t.Aliases {
+		aliases = append(aliases, alias.Name)
+	}
 	return &TagView{
 		ID:          t.ID,
 		Name:        t.Name,
 		Description: t.Description,
+		Type:        t.Type,
+		Aliases:     aliases,
 	}
 }

server/service/tag.go

@@ -27,6 +27,12 @@ func GetTag(id uint) (*model.TagView, error) {
 	if err != nil {
 		return nil, err
 	}
+	if t.AliasOf != nil {
+		t, err = dao.GetTagByID(*t.AliasOf)
+		if err != nil {
+			return nil, err
+		}
+	}
 	return t.ToView(), nil
 }
 
@@ -35,11 +41,17 @@ func GetTagByName(name string) (*model.TagView, error) {
 	if err != nil {
 		return nil, err
 	}
+	if t.AliasOf != nil {
+		t, err = dao.GetTagByID(*t.AliasOf)
+		if err != nil {
+			return nil, err
+		}
+	}
 	return t.ToView(), nil
 }
 
-func SearchTag(name string) ([]model.TagView, error) {
-	tags, err := dao.SearchTag(name)
+func SearchTag(name string, mainTag bool) ([]model.TagView, error) {
+	tags, err := dao.SearchTag(name, mainTag)
 	if err != nil {
 		return nil, err
 	}
@@ -54,7 +66,7 @@ func DeleteTag(id uint) error {
 	return dao.DeleteTag(id)
 }
 
-func SetTagDescription(uid uint, id uint, description string) (*model.TagView, error) {
+func SetTagInfo(uid uint, id uint, description string, aliasOf *uint, tagType string) (*model.TagView, error) {
 	canUpload, err := checkUserCanUpload(uid)
 	if err != nil {
 		log.Error("Error checking user permissions:", err)
@@ -63,13 +75,18 @@ func SetTagDescription(uid uint, id uint, description string) (*model.TagView, e
 	if !canUpload {
 		return nil, model.NewUnAuthorizedError("User cannot set tag description")
 	}
+	if err := dao.SetTagInfo(id, description, aliasOf, tagType); err != nil {
+		return nil, err
+	}
 	t, err := dao.GetTagByID(id)
 	if err != nil {
 		return nil, err
 	}
-	t.Description = description
-	if err := dao.SetTagDescription(id, description); err != nil {
-		return nil, err
+	if t.AliasOf != nil {
+		t, err = dao.GetTagByID(*t.AliasOf)
+		if err != nil {
+			return nil, err
+		}
 	}
 	return t.ToView(), nil
 }