<template>
  <MainTemplate :title="`Nutzer ${origin?.username} - Rollen bearbeiten`">
    <template #headerInsert>
      <RouterLink to="../" class="text-primary">zurück zur Liste (abbrechen)</RouterLink>
    </template>
    <template #main>
      <Spinner v-if="loading == 'loading'" class="mx-auto" />
      <p v-else-if="loading == 'failed'">laden fehlgeschlagen</p>
      <div v-else class="flex flex-col grow gap-4">
        <div class="flex flex-col gap-2 grow">
          <p class="text-xl font-semibold">zugewiesene Rollen</p>
          <div class="flex flex-row flex-wrap gap-2 h-1/2 overflow-y-auto">
            <div
              v-for="role in assignedRoles"
              :key="role.id"
              class="flex flex-row gap-2 items-center px-2 p-1 border border-gray-300 rounded-md h-fit cursor-pointer"
              @click="removeAssigned(role.id)"
            >
              <p>{{ role.role }}</p>
              <XMarkIcon class="w-5 h-5" />
            </div>
          </div>
          <p class="text-xl font-semibold">verfügbare Rollen</p>
          <div class="flex flex-row flex-wrap gap-2 h-1/2 overflow-y-auto">
            <div
              v-for="role in availableRoles"
              :key="role.id"
              class="flex flex-row gap-2 items-center px-2 p-1 border border-gray-300 rounded-md h-fit cursor-pointer"
              @click="addAvailable(role.id)"
            >
              <p>{{ role.role }}</p>
              <PlusIcon class="w-5 h-5" />
            </div>
          </div>
        </div>
        <div class="flex flex-row justify-end gap-2">
          <button primary-outline class="w-fit!" :disabled="canSaveOrReset" @click="resetForm">verwerfen</button>
          <button primary class="w-fit!" :disabled="status == 'loading' || canSaveOrReset" @click="triggerRolesUpdate">
            speichern
          </button>
          <Spinner v-if="status == 'loading'" class="my-auto" />
          <SuccessCheckmark v-else-if="status?.status == 'success'" />
          <FailureXMark v-else-if="status?.status == 'failed'" />
        </div>
      </div>
    </template>
  </MainTemplate>
</template>

<script setup lang="ts">
import { defineComponent } from "vue";
import { RouterLink } from "vue-router";
import { mapState, mapActions } from "pinia";
import { useUserStore } from "@/stores/admin/management/user";
import { useRoleStore } from "@/stores/admin/management/role";
import type { PermissionObject } from "@/types/permissionTypes";
import MainTemplate from "@/templates/Main.vue";
import Spinner from "@/components/Spinner.vue";
import SuccessCheckmark from "@/components/SuccessCheckmark.vue";
import FailureXMark from "@/components/FailureXMark.vue";
import { XMarkIcon, PlusIcon } from "@heroicons/vue/24/outline";
import type { UserViewModel } from "@/viewmodels/admin/management/user.models";
import cloneDeep from "lodash.clonedeep";
import isEqual from "lodash.isequal";
</script>

<script lang="ts">
export default defineComponent({
  props: {
    id: String,
  },
  data() {
    return {
      loading: "loading" as "loading" | "fetched" | "failed",
      status: null as null | "loading" | { status: "success" | "failed"; reason?: string },
      origin: null as null | UserViewModel,
      assigned: [] as Array<number>,
      timeout: null as any,
    };
  },
  computed: {
    ...mapState(useRoleStore, ["roles"]),
    assignedRoles() {
      return this.roles.filter((r) => this.assigned.includes(r.id));
    },
    availableRoles() {
      return this.roles.filter((r) => !this.assigned.includes(r.id));
    },
    canSaveOrReset(): boolean {
      return isEqual(this.origin?.roles.map((r) => r.id) ?? [], this.assigned);
    },
  },
  mounted() {
    this.fetchRoles();
    this.fetchItem();
  },
  beforeUnmount() {
    try {
      clearTimeout(this.timeout);
    } catch (error) {}
  },
  methods: {
    ...mapActions(useUserStore, ["fetchUserById", "updateActiveUserRoles"]),
    ...mapActions(useRoleStore, ["fetchRoles"]),
    resetForm() {
      this.assigned = this.origin?.roles.map((r) => r.id) ?? [];
    },
    fetchItem() {
      this.fetchUserById(this.id ?? "")
        .then((result) => {
          this.origin = cloneDeep(result.data);
          this.assigned = this.origin?.roles.map((r) => r.id) ?? [];
          this.loading = "fetched";
        })
        .catch((err) => {
          this.loading = "failed";
        });
    },
    addAvailable(id: number) {
      this.assigned.push(id);
    },
    removeAssigned(id: number) {
      this.assigned = this.assigned.filter((roleId) => roleId !== id);
    },
    triggerRolesUpdate() {
      if (this.origin == null) return;
      this.status = "loading";
      this.updateActiveUserRoles(this.origin.id, this.assigned)
        .then(() => {
          this.fetchItem();
          this.status = { status: "success" };
        })
        .catch((err) => {
          this.status = { status: "failed" };
        })
        .finally(() => {
          this.timeout = setTimeout(() => {
            this.status = null;
          }, 2000);
        });
    },
  },
});
</script>
