Add an user management page for admins

README.md

@@ -28,6 +28,8 @@ Or with a volume, for example if you created a volume named `bibliomane_data`:
 
 `--add-user` or `-a` can be used to create an account on startup. It requires a string following htpasswd format `[username]:[bcrypt hashed password]`.
 
+Use `--add-admin-user` or `-A` instead to add an user as an admin.
+
 The password can be generated using `htpasswd -nBC10 [username]`.
 
 For example, to create an user account `demo`:

demodata.sql

@@ -1,6 +1,7 @@
 --users
 INSERT INTO users(created_at, name, password) VALUES ('NOW', 'demo','$2a$10$7mfCBxBwIzXDU6r9az26o.zPX/r6IlNZVfU9zxSoLVtc0kRPimzba');
 INSERT INTO users(created_at, name, password) VALUES ('NOW', 'demo2','$2a$10$7mfCBxBwIzXDU6r9az26o.zPX/r6IlNZVfU9zxSoLVtc0kRPimzba');
+INSERT INTO users(created_at, name, admin, password) VALUES ('NOW', 'admin', 'true', '$2a$10$7mfCBxBwIzXDU6r9az26o.zPX/r6IlNZVfU9zxSoLVtc0kRPimzba');
 
 -- cover
 INSERT INTO static_files(name, path) VALUES ('odingosochateaux.jpg', 'odingosochateaux.jpg');

front/src/AppNavBar.vue

@@ -100,6 +100,14 @@ onMounted(() => {
         <RouterLink v-if="authStore.user" to="/add" class="navbar-item" activeClass="is-active">
           {{ $t('navbar.addbook') }}
         </RouterLink>
+        <RouterLink
+          v-if="authStore.user && authStore.user.admin"
+          to="/admin/users"
+          class="navbar-item"
+          activeClass="is-active"
+        >
+          {{ $t('navbar.usersmgt') }}
+        </RouterLink>
         <div
           v-if="authStore.user && appInfo && !appInfo.demoMode"
           class="navbar-item is-hidden-desktop"

front/src/CollectionFormElement.vue

@@ -58,7 +58,6 @@ function onPointerMove(e) {
   if (initialGrabPosition.value == null) {
     return
   }
-  e.preventDefault()
   draggedPosition.value = e.pageY - initialGrabPosition.value
   emit('grabbing', draggedPosition.value)
 }
@@ -75,13 +74,13 @@ function onPointerMove(e) {
       "
       ref="collectionitembox"
       class="collectionitembox"
-      @pointermove="onPointerMove"
+      @pointermove.prevent="onPointerMove"
       @pointerup="onPointerUp"
       @pointerleave="clearGrabVariables"
     >
       <BookListElement v-bind="props.book">
         <template v-slot:left>
-          <div class="is-hidden-desktop align-right">
+          <div class="is-hidden-desktop mobile-delete">
             <div @click="$emit('delete')" class="centered closebtn clickable">
               <b-icon-x />
             </div>
@@ -182,14 +181,16 @@ function onPointerMove(e) {
   font-size: 36px;
 }
 
-.align-right {
+.mobile-delete {
   display: flex;
   justify-content: flex-end;
+  height: 10px;
 }
 
 @media (max-width: 1024px) {
   .positionwidget {
     margin-bottom: 10px;
+    margin-left: 0px;
   }
 }
 </style>

front/src/CollectionListElement.vue

@@ -1,6 +1,6 @@
 <script setup>
 import { getImagePathOrDefault } from './api.js'
-import { useTemplateRef, onMounted } from 'vue'
+import { useTemplateRef } from 'vue'
 import { useRouter } from 'vue-router'
 
 const emit = defineEmits(['delete'])

front/src/LogIn.vue

@@ -23,7 +23,7 @@ const passwordError = computed(() => {
   return extractFormErrorFromField('Password', errors.value)
 })
 
-async function onSubmit(e) {
+async function onSubmit() {
   const res = await postLogin(user)
   if (res.ok) {
     let json = await res.json()
@@ -36,7 +36,7 @@ async function onSubmit(e) {
 }
 
 async function login(username, json) {
-  useAuthStore().login({ username: username, token: json['token'] })
+  useAuthStore().login({ username: username, admin: json['admin'], token: json['token'] })
 }
 </script>
 

front/src/UsersManagement.vue

@@ -0,0 +1,76 @@
+<script setup>
+import { ref, computed } from 'vue'
+import { getUsers } from './api.js'
+
+const limit = 50
+const pageNumber = ref(1)
+
+const offset = computed(() => (pageNumber.value - 1) * limit)
+
+const data = ref(null)
+const error = ref(null)
+
+let totalUsersNumber = computed(() =>
+  typeof data != 'undefined' && data.value != null ? data.value['count'] : 0,
+)
+let pageTotal = computed(() => Math.ceil(totalUsersNumber.value / limit))
+
+fetchData()
+
+function fetchData() {
+  getUsers(data, error, limit, offset.value)
+}
+
+function pageChange(newPageNumber) {
+  pageNumber.value = newPageNumber
+  data.value = null
+  fetchData()
+}
+</script>
+
+<template>
+  <div v-if="error">{{ $t('usersmanagement.error', { error: error.message }) }}</div>
+  <div v-else-if="data">
+    <table class="table">
+      <thead>
+        <th>#</th>
+        <th>{{ $t('usersmanagement.name') }}</th>
+        <th>{{ $t('usersmanagement.admin') }}</th>
+        <th>
+          <abbr :title="$t('usersmanagement.addedbookshelp')">{{
+            $t('usersmanagement.addedbooks')
+          }}</abbr>
+        </th>
+        <th>
+          <abbr :title="$t('usersmanagement.bookshelp')">{{ $t('usersmanagement.books') }}</abbr>
+        </th>
+      </thead>
+      <tbody>
+        <tr v-for="user in data.users" :key="user.id">
+          <th class="numbercell">{{ user.id }}</th>
+          <td>{{ user.name }}</td>
+          <td class="boolcell"><input type="checkbox" disabled :checked="user.admin" /></td>
+          <td class="numbercell">{{ user.addedbookscount }}</td>
+          <td class="numbercell">{{ user.userbookscount }}</td>
+        </tr>
+      </tbody>
+    </table>
+    <Pagination
+      :pageNumber="pageNumber"
+      :pageTotal="pageTotal"
+      maxItemDisplayed="11"
+      @pageChange="pageChange"
+    />
+  </div>
+  <div v-else>{{ $t('usersmanagement.loading') }}</div>
+</template>
+
+<style scoped>
+.boolcell {
+  text-align: center;
+}
+
+.numbercell {
+  text-align: right;
+}
+</style>

front/src/api.js

@@ -118,6 +118,11 @@ export function getBookCall(id) {
   return userFetch('/ws/book/' + id)
 }
 
+export function getUsers(data, error, limit, offset) {
+  const queryParams = new URLSearchParams({ limit: limit, offset: offset })
+  return useFetch(data, error, '/ws/admin/users' + '?' + queryParams.toString())
+}
+
 export function postBook(book) {
   return genericPayloadCall('/ws/book', book.value, 'POST')
 }

front/src/locales/en.json

@@ -11,6 +11,7 @@
     "logout": "Log out",
     "signup": "Sign up",
     "search": "Search",
+    "usersmgt": "Users Management",
     "login": "Log In"
   },
   "barcode": {
@@ -100,5 +101,15 @@
   },
   "collection": {
     "error": "Error when loading collection: {error}"
+  },
+  "usersmanagement": {
+    "error": "Error when loading users: {error}",
+    "name": "Name",
+    "admin": "Is Admin ?",
+    "addedbooks": "Added Books",
+    "addedbookshelp": "Number of books the user created or imported.",
+    "books": "Books Number",
+    "bookshelp": "Total number of books of the user.",
+    "loading": "Loading..."
   }
 }

front/src/locales/fr.json

@@ -11,6 +11,7 @@
     "logout": "Se déconnecter",
     "signup": "S'inscrire",
     "search": "Rechercher",
+    "usersmgt": "Gestion Des Utilisateurs",
     "login": "Se connecter"
   },
   "barcode": {
@@ -100,5 +101,15 @@
   },
   "collection": {
     "error": "Erreur pendant le chargement de la liste : {error}"
+  },
+  "usersmanagement": {
+    "error": "Erreur pendant le chargement des utilisateurs: {error}",
+    "name": "Nom",
+    "admin": "Administrateur ?",
+    "addedbooks": "Livres Ajoutés",
+    "addedbookshelp": "Nombre de livres créés ou importés par l'utilisateur.",
+    "books": "Nombre De Livres",
+    "bookshelp": "Le nombre total de livres de cet utilisateur.",
+    "loading": "Chargement..."
   }
 }

front/src/router.js

@@ -13,6 +13,7 @@ import ScanBook from './ScanBook.vue'
 import SearchBook from './SearchBook.vue'
 import ImportInventaire from './ImportInventaire.vue'
 import InstanceBrowser from './InstanceBrowser.vue'
+import UsersManagement from './UsersManagement.vue'
 import { useAuthStore } from './auth.store'
 
 const routes = [
@@ -30,6 +31,7 @@ const routes = [
   { path: '/add', component: BookFormEdit },
   { path: '/signup', component: SignUp },
   { path: '/login', component: LogIn },
+  { path: '/admin/users', component: UsersManagement },
 ]
 
 export const router = createRouter({

internal/apitest/get_appinfo_test.go

@@ -28,4 +28,5 @@ func TestGetAppInfo_Ok(t *testing.T) {
 
 	assert.Equal(t, false, appInfo.RegistrationDisabled)
 	assert.Equal(t, false, appInfo.DemoMode)
+	assert.Equal(t, false, appInfo.Admin)
 }

internal/apitest/get_users_test.go

@@ -0,0 +1,41 @@
+package apitest
+
+import (
+	"net/http"
+	"testing"
+
+	"git.artlef.fr/bibliomane/internal/dto"
+	"git.artlef.fr/bibliomane/internal/testutils"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestGetUsersHandler_OK(t *testing.T) {
+	status, result := testFetchUsers(t, "15", "0")
+	assert.Equal(t, http.StatusOK, status)
+	assert.Equal(t, int64(3), result.Count)
+	assert.Equal(t, 3, len(result.Users))
+}
+
+func TestGetUsersHandler_Limit(t *testing.T) {
+	status, result := testFetchUsers(t, "2", "0")
+	assert.Equal(t, http.StatusOK, status)
+	assert.Equal(t, int64(3), result.Count)
+	assert.Equal(t, 2, len(result.Users))
+}
+
+func TestGetUsersHandler_Forbidden(t *testing.T) {
+	status, _ := testutils.TestFetchModel[dto.UsersGet](t, "/ws/admin/users", "10", "0")
+	assert.Equal(t, http.StatusForbidden, status)
+}
+
+func TestGetUsersHandler_BookCountOK(t *testing.T) {
+	status, result := testFetchUsers(t, "1", "1")
+	assert.Equal(t, http.StatusOK, status)
+	assert.Equal(t, "demo2", result.Users[0].Name)
+	assert.Equal(t, int64(1), result.Users[0].AddedBooksCount)
+	assert.Equal(t, int64(3), result.Users[0].UserBooksCount)
+}
+
+func testFetchUsers(t *testing.T, limit string, offset string) (int, dto.UsersGet) {
+	return testutils.TestFetchAdminModel[dto.UsersGet](t, "/ws/admin/users", limit, offset)
+}

internal/apitest/post_importbook_test.go

@@ -22,7 +22,7 @@ func TestPostImportBookHandler_Ok(t *testing.T) {
 	book := testGetBook(t, strconv.FormatUint(uint64(id), 10), 200)
 	assert.Equal(t, "les Hauts de Hurle-Vent", book.Title)
 	assert.Equal(t, "Emily Brontë", book.Author)
-	assert.Equal(t, "isbn:9782253004752", book.InventaireId)
+	assert.Equal(t, "inv:31cee958a93ba50697a3fec2a360f437", book.InventaireId)
 	assert.Equal(t, "/static/bookcover/44abbcbdc1092212c2bae66f5165019dac1e2a7b.webp", book.CoverPath)
 }
 
@@ -31,7 +31,7 @@ func TestPostImportBookHandler_OkAuthorKey(t *testing.T) {
 	book := testGetBook(t, strconv.FormatUint(uint64(id), 10), 200)
 	assert.Equal(t, "Dr Bloodmoney", book.Title)
 	assert.Equal(t, "Philip K. Dick", book.Author)
-	assert.Equal(t, "isbn:9782290033630", book.InventaireId)
+	assert.Equal(t, "inv:ba7d376567114bd69a6c8f0a135a89d0", book.InventaireId)
 	assert.Equal(t, "/static/bookcover/1d1493159d031224a42b37c4417fcbb8c76b00bd.webp", book.CoverPath)
 }
 

internal/apitest/search_book_test.go

@@ -97,7 +97,7 @@ func TestSearchBook_ISBNInventaire(t *testing.T) {
 			Title:               "Les premières enquêtes de Maigret",
 			Author:              "Georges Simenon",
 			Description:         "roman de Georges Simenon",
-			InventaireID:        "isbn:9782253158400",
+			InventaireID:        "inv:cd8af0fc32d2f721d2853d02682dfd44",
 			IsInventaireEdition: true,
 			Rating:              0,
 			Read:                false,

internal/config/config.go

@@ -33,6 +33,7 @@ type Config struct {
 	DemoMode            bool              `toml:"demo-mode" short:"D" default:"false" help:"Activate demo mode." comment:"Activate demo mode: anyone connecting to the instance will be logged in as a single user."`
 	DemoUsername        string            `toml:"demo-username" default:"demo" help:"Name of the single user used for the demo." comment:"Name of the single user used for the demo."`
 	AddUser             UserListAsStrings `toml:"add-user" short:"a" help:"Add users on startup following htpasswd bcrypt format." comment:"Add users on startup following htpasswd bcrypt format, example: [\"demo:$2y$10$UHR2646SZo2W.Rhna7bn5eWNLXWJZ/Sa3oLd9RlxlXs57Bwp6isOS\",\"user:$2y$10$3WYUp.VDpzJRywtrxO1s/uWfUIKpTE4yh5B1d2RCef3hvczYbEWTC\"]"`
+	AddAdminUser        UserListAsStrings `toml:"add-admin-user" short:"A" help:"Same as add-user but the added user has admin privilege." comment:"Same as add-user but the added user has admin privilege."`
 }
 
 type UserListAsStrings []string

internal/createuser/createuser.go

@@ -4,7 +4,6 @@ import (
 	"errors"
 	"fmt"
 	"net/http"
-	"slices"
 	"strings"
 
 	"git.artlef.fr/bibliomane/internal/appcontext"
@@ -21,13 +20,19 @@ func CreateUser(ac appcontext.AppContext, username string, password string) erro
 	if err != nil {
 		return err
 	}
-	return CreateUserWithHashedPassword(ac, username, string(hashedPassword))
+
+	user := model.User{
+		Name:     username,
+		Password: string(hashedPassword),
+		Admin:    false,
+	}
+	return CreateUserWithHashedPassword(ac, &user)
 }
 
 // only call this method with hashed password
-func CreateUserWithHashedPassword(ac appcontext.AppContext, username string, hashedPassword string) error {
+func CreateUserWithHashedPassword(ac appcontext.AppContext, userToCreate *model.User) error {
 	var existingUser model.User
-	err := ac.Db.Where("name = ?", username).First(&existingUser).Error
+	err := ac.Db.Where("name = ?", userToCreate.Name).First(&existingUser).Error
 	if err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
 		return err
 	}
@@ -37,41 +42,72 @@ func CreateUserWithHashedPassword(ac appcontext.AppContext, username string, has
 			Err:        errors.New(i18nresource.GetTranslatedMessage(&ac, "UserAlreadyExists")),
 		}
 	}
-	user := model.User{
+	return ac.Db.Model(&model.User{}).Save(&userToCreate).Error
-		Name:     username,
-		Password: hashedPassword,
-	}
-	return ac.Db.Model(&model.User{}).Save(&user).Error
 }
 
 func CreateDefaultUsers(ac appcontext.AppContext) error {
+	usersPasswordMap, err := createNormalUsersMap(ac)
+	if err != nil {
+		return err
+	}
+	err = createDefaultUsersFromMap(ac, usersPasswordMap, false)
+	if err != nil {
+		return err
+	}
+	adminUsersPasswordMap, err := createDefaultUsersMap(ac, ac.Config.AddAdminUser)
+	if err != nil {
+		return err
+	}
+	return createDefaultUsersFromMap(ac, adminUsersPasswordMap, true)
+}
+
+func createNormalUsersMap(ac appcontext.AppContext) (map[string]string, error) {
+	usersPasswordMap, err := createDefaultUsersMap(ac, ac.Config.AddUser)
+	if err != nil {
+		return usersPasswordMap, err
+	}
+	_, ok := usersPasswordMap[ac.Config.DemoUsername]
+	if !ok {
+		usersPasswordMap[ac.Config.DemoUsername] = ""
+	}
+	return usersPasswordMap, nil
+}
+
+func createDefaultUsersMap(ac appcontext.AppContext, adduser []string) (map[string]string, error) {
 	usersPasswordMap := make(map[string]string)
-	var usernames []string
+	for _, s := range adduser {
-	for _, s := range ac.Config.AddUser {
 		splittedString := strings.Split(s, ":")
 		if len(splittedString) < 2 {
-			return fmt.Errorf(i18nresource.GetTranslatedMessage(&ac, "ErrorWhenCreatingUserFromStr"), s)
+			return usersPasswordMap,
+				fmt.Errorf(i18nresource.GetTranslatedMessage(&ac, "ErrorWhenCreatingUserFromStr"), s)
 		}
-		usernames = append(usernames, splittedString[0])
 		usersPasswordMap[splittedString[0]] = splittedString[1]
 	}
-	if !slices.Contains(usernames, ac.Config.DemoUsername) {
+	return usersPasswordMap, nil
-		usernames = append(usernames, ac.Config.DemoUsername)
+}
-		usersPasswordMap[ac.Config.DemoUsername] = ""
 
-	}
+func createDefaultUsersFromMap(
+	ac appcontext.AppContext,
+	usersPasswordMap map[string]string,
+	isAdmin bool) error {
 
 	var existingUsers []model.User
-	err := ac.Db.Where("name IN ?", usernames).Find(&existingUsers).Error
+	err := ac.Db.Where("name IN ?", mapToArrayKey(usersPasswordMap)).Find(&existingUsers).Error
 	if err != nil {
 		return err
 	}
 
-	for _, username := range usernames {
+	for username, password := range usersPasswordMap {
 		if isInExistingUsers(username, existingUsers) {
 			continue
 		}
-		err = CreateUserWithHashedPassword(ac, username, usersPasswordMap[username])
+
+		user := model.User{
+			Name:     username,
+			Password: password,
+			Admin:    isAdmin,
+		}
+		err = CreateUserWithHashedPassword(ac, &user)
 		if err != nil {
 			return err
 		}
@@ -87,3 +123,11 @@ func isInExistingUsers(username string, existingUsers []model.User) bool {
 	}
 	return false
 }
+
+func mapToArrayKey(m map[string]string) []string {
+	var a []string
+	for k := range m {
+		a = append(a, k)
+	}
+	return a
+}

internal/dto/out.go

@@ -4,6 +4,7 @@ type AppInfo struct {
 	RegistrationDisabled bool   `json:"registrationDisabled"`
 	DemoMode             bool   `json:"demoMode"`
 	DemoUsername         string `json:"demoUsername"`
+	Admin                bool   `json:"admin"`
 }
 
 type FullBookGet struct {
@@ -72,3 +73,16 @@ type CollectionListBookItemGet struct {
 	Title     string `json:"title"`
 	CoverPath string `json:"coverPath"`
 }
+
+type UsersGet struct {
+	Count int64     `json:"count"`
+	Users []UserGet `json:"users"`
+}
+
+type UserGet struct {
+	ID              uint   `json:"id"`
+	Name            string `json:"name"`
+	Admin           bool   `json:"admin"`
+	AddedBooksCount int64  `json:"addedbookscount"`
+	UserBooksCount  int64  `json:"userbookscount"`
+}

internal/jwtauth/jwt.go

@@ -1,10 +1,12 @@
 package jwtauth
 
 import (
+	"strconv"
+
 	"github.com/golang-jwt/jwt/v5"
 )
 
-func GenerateJwtToken(username string) (string, error) {
+func GenerateJwtToken(username string, admin bool) (string, error) {
 	var s string
 	key, err := GetJwtKey()
 	if err != nil {
@@ -12,8 +14,9 @@ func GenerateJwtToken(username string) (string, error) {
 	}
 	t := jwt.NewWithClaims(jwt.SigningMethodHS256,
 		jwt.MapClaims{
-			"iss": "bibliomane",
+			"iss":   "bibliomane",
-			"sub": username,
+			"sub":   username,
+			"admin": strconv.FormatBool(admin),
 		})
 	return t.SignedString(key)
 }

internal/middleware/auth.go

@@ -2,6 +2,7 @@ package middleware
 
 import (
 	"net/http"
+	"strconv"
 	"strings"
 
 	"git.artlef.fr/bibliomane/internal/jwtauth"
@@ -27,29 +28,33 @@ func Auth() gin.HandlerFunc {
 			return
 		}
 
-		username, err := parseUserFromJwt(c)
+		jwtokenStr := jwtFromBearerToken(c.GetHeader("Authorization"))
+		jwtoken, err := jwt.Parse(jwtokenStr,
+			func(token *jwt.Token) (any, error) {
+				return jwtauth.GetJwtKey()
+			}, jwt.WithValidMethods([]string{jwt.SigningMethodHS256.Alg()}))
+
 		if err != nil {
-			c.AbortWithStatusJSON(http.StatusUnauthorized,
+			abortError(c)
-				gin.H{"error": "You must be logged in to access this resource."})
+			return
+		}
+
+		//check admin rights
+		if strings.HasPrefix(c.FullPath(), "/ws/admin/") && !hasAdminRights(jwtoken) {
+			c.AbortWithStatusJSON(http.StatusForbidden,
+				gin.H{"error": "You do not have the right to access this resource."})
+			return
+		}
+
+		username, err := jwtoken.Claims.GetSubject()
+		if err != nil {
+			abortError(c)
 		} else {
 			c.Set("user", username)
 		}
 	}
 }
 
-func parseUserFromJwt(c *gin.Context) (string, error) {
-
-	jwtokenStr := jwtFromBearerToken(c.GetHeader("Authorization"))
-	jwtoken, parseErr := jwt.Parse(jwtokenStr,
-		func(token *jwt.Token) (any, error) {
-			return jwtauth.GetJwtKey()
-		}, jwt.WithValidMethods([]string{jwt.SigningMethodHS256.Alg()}))
-	if parseErr != nil {
-		return "", parseErr
-	}
-	return jwtoken.Claims.GetSubject()
-}
-
 func jwtFromBearerToken(bearerToken string) string {
 	splitToken := strings.Split(bearerToken, " ")
 	if len(splitToken) == 2 {
@@ -58,3 +63,28 @@ func jwtFromBearerToken(bearerToken string) string {
 		return ""
 	}
 }
+
+func hasAdminRights(token *jwt.Token) bool {
+	claims, ok := token.Claims.(jwt.MapClaims)
+	if !ok {
+		return false
+	}
+	raw, ok := claims["admin"]
+	if !ok {
+		return false
+	}
+	adminStr, ok := raw.(string)
+	if !ok {
+		return false
+	}
+	isAdmin, err := strconv.ParseBool(adminStr)
+	if err != nil {
+		return false
+	}
+	return isAdmin
+}
+
+func abortError(c *gin.Context) {
+	c.AbortWithStatusJSON(http.StatusUnauthorized,
+		gin.H{"error": "You must be logged in to access this resource."})
+}

internal/model/user.go

@@ -4,7 +4,7 @@ import "gorm.io/gorm"
 
 type User struct {
 	gorm.Model
-	Name      string `gorm:"index;uniqueIndex"`
+	Name     string `gorm:"index;uniqueIndex"`
-	Password  string
+	Password string
-	UserBooks []UserBook
+	Admin    bool
 }

internal/query/queryusers.go

@@ -0,0 +1,33 @@
+package query
+
+import (
+	"git.artlef.fr/bibliomane/internal/dto"
+	"git.artlef.fr/bibliomane/internal/model"
+	"gorm.io/gorm"
+)
+
+func FetchAllUsers(db *gorm.DB, limit int, offset int) ([]dto.UserGet, error) {
+	var books []dto.UserGet
+	query := fetchAllUserQuery(db)
+	query = query.Limit(limit)
+	query = query.Offset(offset)
+	query = query.Order("users.id DESC")
+	res := query.Find(&books)
+	return books, res.Error
+}
+
+func FetchAllUsersCount(db *gorm.DB) (int64, error) {
+	var count int64
+	query := fetchAllUserQuery(db)
+	res := query.Count(&count)
+	return count, res.Error
+}
+
+func fetchAllUserQuery(db *gorm.DB) *gorm.DB {
+	query := db.Model(&model.User{})
+	query = query.Select("users.id, users.name, users.admin, count(distinct books.id) as added_books_count, count(distinct user_books.id) as user_books_count")
+	query = query.Joins("left join books on (books.added_by_id = users.id)")
+	query = query.Joins("left join user_books on user_books.user_id = users.id")
+	query = query.Group("users.id, users.name")
+	return query
+}

internal/routes/appinfo.go

@@ -5,12 +5,24 @@ import (
 
 	"git.artlef.fr/bibliomane/internal/appcontext"
 	"git.artlef.fr/bibliomane/internal/dto"
+	"git.artlef.fr/bibliomane/internal/myvalidator"
 )
 
 func GetAppInfo(ac appcontext.AppContext) {
+	admin := false
+	_, userIsInContext := ac.C.Get("user")
+	if userIsInContext {
+		user, err := ac.GetAuthenticatedUser()
+		if err != nil {
+			myvalidator.ReturnErrorsAsJsonResponse(&ac, err)
+			return
+		}
+		admin = user.Admin
+	}
 	ac.C.JSON(http.StatusOK, dto.AppInfo{
 		RegistrationDisabled: ac.Config.DisableRegistration,
 		DemoMode:             ac.Config.DemoMode,
 		DemoUsername:         ac.Config.DemoUsername,
+		Admin:                admin,
 	})
 }

internal/routes/userlogin.go

@@ -12,12 +12,12 @@ import (
 	"git.artlef.fr/bibliomane/internal/myvalidator"
 	"github.com/gin-gonic/gin"
 	"golang.org/x/crypto/bcrypt"
-	"gorm.io/gorm"
 )
 
 func PostLoginHandler(ac appcontext.AppContext) {
 
 	var username string
+	admin := false
 
 	if !ac.Config.DemoMode {
 		var user dto.UserLogin
@@ -26,30 +26,27 @@ func PostLoginHandler(ac appcontext.AppContext) {
 			myvalidator.ReturnErrorsAsJsonResponse(&ac, err)
 			return
 		}
+		var userDb model.User
+		ac.Db.Where("name = ?", user.Username).First(&userDb)
 
-		if !ac.Config.DemoMode && !isUserAndPasswordOk(ac.Db, user.Username, user.Password) {
+		if !ac.Config.DemoMode &&
+			bcrypt.CompareHashAndPassword([]byte(userDb.Password), []byte(user.Password)) != nil {
 			ac.C.JSON(http.StatusUnauthorized,
 				gin.H{"error": i18nresource.GetTranslatedMessage(&ac, "InvalidCredentials")})
 			return
 		}
 		username = user.Username
+		admin = userDb.Admin
 	} else {
 		username = ac.Config.DemoUsername
 	}
 
 	var jwtToken string
-	jwtToken, err := jwtauth.GenerateJwtToken(username)
+	jwtToken, err := jwtauth.GenerateJwtToken(username, admin)
 	if err != nil {
 		ac.C.JSON(http.StatusUnauthorized,
 			gin.H{"error": fmt.Errorf("Error when generating JWT token: %w", err)})
 		return
 	}
-	ac.C.JSON(http.StatusOK, gin.H{"message": i18nresource.GetTranslatedMessage(&ac, "AuthenticationSuccess"), "token": jwtToken})
+	ac.C.JSON(http.StatusOK, gin.H{"message": i18nresource.GetTranslatedMessage(&ac, "AuthenticationSuccess"), "admin": admin, "token": jwtToken})
-}
-
-func isUserAndPasswordOk(db *gorm.DB, username string, password string) bool {
-	var user model.User
-	db.Where("name = ?", username).First(&user)
-	err := bcrypt.CompareHashAndPassword([]byte(user.Password), []byte(password))
-	return err == nil
 }

internal/routes/usersget.go

@@ -0,0 +1,34 @@
+package routes
+
+import (
+	"net/http"
+
+	"git.artlef.fr/bibliomane/internal/appcontext"
+	"git.artlef.fr/bibliomane/internal/dto"
+	"git.artlef.fr/bibliomane/internal/myvalidator"
+	"git.artlef.fr/bibliomane/internal/query"
+)
+
+func GetUsersHandler(ac appcontext.AppContext) {
+	limit, err := ac.GetQueryLimit()
+	if err != nil {
+		myvalidator.ReturnErrorsAsJsonResponse(&ac, err)
+		return
+	}
+	offset, err := ac.GetQueryOffset()
+	if err != nil {
+		myvalidator.ReturnErrorsAsJsonResponse(&ac, err)
+		return
+	}
+	users, err := query.FetchAllUsers(ac.Db, limit, offset)
+	if err != nil {
+		myvalidator.ReturnErrorsAsJsonResponse(&ac, err)
+		return
+	}
+	count, err := query.FetchAllUsersCount(ac.Db)
+	if err != nil {
+		myvalidator.ReturnErrorsAsJsonResponse(&ac, err)
+		return
+	}
+	ac.C.JSON(http.StatusOK, dto.UsersGet{Count: count, Users: users})
+}

internal/setup/setup.go

@@ -108,6 +108,10 @@ func Setup(config *config.Config) *gin.Engine {
 	ws.DELETE("/collection/item/:id", func(c *gin.Context) {
 		routes.DeleteCollectionBookHandler(appcontext.AppContext{C: c, Db: db, I18n: bundle, Config: config})
 	})
+	ws.GET("/admin/users", func(c *gin.Context) {
+		routes.GetUsersHandler(appcontext.AppContext{C: c, Db: db, I18n: bundle, Config: config})
+	})
+
 	r.Static("/static/bookcover", config.ImageFolderPath)
 
 	folders := []string{"assets", "css", "image"}

internal/testutils/testutils.go

@@ -44,6 +44,15 @@ func ConnectDemo2User(router *gin.Engine) string {
 	return connectUser(router, loginJson)
 }
 
+func ConnectAdminUser(router *gin.Engine) string {
+	loginJson :=
+		`{
+		"username": "admin",
+		"password":"demopw"
+	}`
+	return connectUser(router, loginJson)
+}
+
 func connectUser(router *gin.Engine, loginJson string) string {
 	w := httptest.NewRecorder()
 	req, _ := http.NewRequest("POST", "/ws/auth/login", strings.NewReader(loginJson))
@@ -87,6 +96,18 @@ func TestFetchOneModel[T any](t *testing.T, urlpath string, id string) (int, T)
 
 func TestFetchModel[T any](t *testing.T, urlpath string, limit string, offset string) (int, T) {
 	router := TestSetup()
+	token := ConnectDemoUser(router)
+	return testFetchModelWithUser[T](t, urlpath, limit, offset, token)
+}
+
+func TestFetchAdminModel[T any](t *testing.T, urlpath string, limit string, offset string) (int, T) {
+	router := TestSetup()
+	token := ConnectAdminUser(router)
+	return testFetchModelWithUser[T](t, urlpath, limit, offset, token)
+}
+
+func testFetchModelWithUser[T any](t *testing.T, urlpath string, limit string, offset string, token string) (int, T) {
+	router := TestSetup()
 
 	u, err := url.Parse(urlpath)
 	if err != nil {
@@ -107,7 +128,6 @@ func TestFetchModel[T any](t *testing.T, urlpath string, limit string, offset st
 	q.Set("lang", "fr")
 	u.RawQuery = q.Encode()
 
-	token := ConnectDemoUser(router)
 	req, _ := http.NewRequest("GET", u.String(), nil)
 	req.Header.Add("Authorization", fmt.Sprintf("Bearer %s", token))
 	w := httptest.NewRecorder()