refactor: ♻️ rewrite admin CRUD interface for admins (#825)

* docs: 📝 general documentation + add FAQ page

* fix(frontend): 🐛 readd missing upload button to backups.

* feat(backend): ✨ add support for backup sizes to be displayed on frontend

* feat(backend): ✨ add backend for administrator CRUD of users

* add admin support for user

* refactor(frontend): ♻️ rewrite admin CRUD interface for admins

* fix build errors

Co-authored-by: hay-kot <hay-kot@pm.me>

frontend/pages/admin/manage/users/_id.vue

@@ -0,0 +1,117 @@
+<template>
+  <v-container v-if="user" class="narrow-container">
+    <BasePageTitle>
+      <template #header>
+        <v-img max-height="125" max-width="125" :src="require('~/static/svgs/manage-profile.svg')"></v-img>
+      </template>
+      <template #title> Admin User Management </template>
+      Changes to this user will be reflected immediately.
+    </BasePageTitle>
+    <AppToolbar back> </AppToolbar>
+    <v-form v-if="!userError" ref="refNewUserForm" @submit.prevent="handleSubmit">
+      <v-card outlined>
+        <v-card-text>
+          <div class="d-flex">
+            <p>User Id: {{ user.id }}</p>
+          </div>
+          <v-select
+            v-if="groups"
+            v-model="user.group"
+            :items="groups"
+            rounded
+            class="rounded-lg"
+            item-text="name"
+            item-value="name"
+            :return-object="false"
+            filled
+            label="User Group"
+            :rules="[validators.required]"
+          ></v-select>
+          <AutoForm v-model="user" :items="userForm" update-mode />
+        </v-card-text>
+      </v-card>
+      <div class="d-flex pa-2">
+        <BaseButton type="submit" class="ml-auto"></BaseButton>
+      </div>
+    </v-form>
+  </v-container>
+</template>
+
+<script lang="ts">
+import { defineComponent, useRoute, onMounted, ref } from "@nuxtjs/composition-api";
+import { useAdminApi } from "~/composables/api";
+import { useGroups } from "~/composables/use-groups";
+import { alert } from "~/composables/use-toast";
+import { useUserForm } from "~/composables/use-users";
+import { validators } from "~/composables/use-validators";
+
+export default defineComponent({
+  layout: "admin",
+  setup() {
+    const { userForm } = useUserForm();
+    const { groups } = useGroups();
+    const route = useRoute();
+
+    const userId = route.value.params.id;
+
+    // ==============================================
+    // New User Form
+
+    const refNewUserForm = ref<VForm | null>(null);
+
+    const adminApi = useAdminApi();
+
+    const user = ref({
+      username: "",
+      fullName: "",
+      email: "",
+      admin: false,
+      group: "",
+      advanced: false,
+      canInvite: false,
+      canManage: false,
+      canOrganize: false,
+      id: 0,
+      groupId: 0,
+    });
+
+    const userError = ref(false);
+
+    onMounted(async () => {
+      const { data, error } = await adminApi.users.getOne(userId);
+
+      if (error?.response?.status === 404) {
+        alert.error("User Not Found");
+        userError.value = true;
+      }
+
+      if (data) {
+        // @ts-ignore
+        user.value = data;
+      }
+    });
+
+    async function handleSubmit() {
+      if (!refNewUserForm.value?.validate()) return;
+
+      // @ts-ignore
+      const { response, data } = await adminApi.users.updateOne(user.value.id, user.value);
+
+      if (response?.status === 200 && data) {
+        // @ts-ignore
+        user.value = data;
+      }
+    }
+
+    return {
+      user,
+      userError,
+      userForm,
+      refNewUserForm,
+      handleSubmit,
+      groups,
+      validators,
+    };
+  },
+});
+</script>