<template>
  <v-container
    fill-height
    fluid
    class="d-flex justify-center align-center"
    width="1200px"
    min-height="700px"
    :class="{
      'bg-off-white': !$vuetify.theme.dark,
    }"
  >
    <BaseWizard
      v-model="currentPage"
      :max-page-number="totalPages"
      :title="$i18n.tc('admin.setup.first-time-setup')"
      :prev-button-show="activeConfig.showPrevButton"
      :next-button-show="activeConfig.showNextButton"
      :next-button-text="activeConfig.nextButtonText"
      :next-button-icon="activeConfig.nextButtonIcon"
      :next-button-color="activeConfig.nextButtonColor"
      :next-button-is-submit="activeConfig.isSubmit"
      :is-submitting="isSubmitting"
      @submit="handleSubmit"
    >
      <v-container v-if="currentPage === Pages.LANDING" class="mb-12">
        <v-card-title class="text-h4 justify-center">
          {{ $i18n.tc('admin.setup.welcome-to-mealie-get-started') }}
        </v-card-title>
        <v-btn
          :to="groupSlug ? `/g/${groupSlug}` : '/login'"
          rounded
          outlined
          text
          color="grey lighten-1"
          class="text-subtitle-2 d-flex mx-auto"
          style="width: fit-content;"
        >
          {{ $i18n.tc('admin.setup.already-set-up-bring-to-homepage') }}
        </v-btn>
      </v-container>
      <v-container v-if="currentPage === Pages.USER_INFO">
        <UserRegistrationForm />
      </v-container>
      <v-container v-if="currentPage === Pages.PAGE_2">
        <v-card-title class="headline justify-center">
          {{ $i18n.tc('admin.setup.common-settings-for-new-sites') }}
        </v-card-title>
        <AutoForm v-model="commonSettings" :items="commonSettingsForm" />
      </v-container>
      <v-container v-if="currentPage === Pages.CONFIRM">
        <v-card-title class="headline justify-center">
          {{ $t("general.confirm-how-does-everything-look") }}
        </v-card-title>
        <v-list>
          <template v-for="(item, idx) in confirmationData">
            <v-list-item v-if="item.display" :key="idx">
              <v-list-item-content>
                <v-list-item-title> {{ item.text }} </v-list-item-title>
                <v-list-item-subtitle> {{ item.value }} </v-list-item-subtitle>
              </v-list-item-content>
            </v-list-item>
            <v-divider v-if="idx !== confirmationData.length - 1" :key="`divider-${idx}`" />
          </template>
        </v-list>
      </v-container>
      <v-container v-if="currentPage === Pages.END">
        <v-card-title class="text-h4 justify-center">
          {{ $i18n.tc('admin.setup.setup-complete') }}
        </v-card-title>
        <v-card-title class="text-h6 justify-center">
          {{ $i18n.tc('admin.setup.here-are-a-few-things-to-help-you-get-started') }}
        </v-card-title>
        <div v-for="link, idx in setupCompleteLinks" :key="idx" class="px-4 pt-4">
          <div v-if="link.section">
            <v-divider v-if="idx" />
            <v-card-text class="headline pl-0">
              {{ link.section }}
            </v-card-text>
          </div>
          <v-btn
            :to="link.to"
            color="info"
          >
            {{ link.text }}
          </v-btn>
          <v-card-text class="subtitle px-0 py-2">
            {{ link.description }}
          </v-card-text>
        </div>
      </v-container>
    </BaseWizard>
  </v-container>
</template>

<script lang="ts">
import { computed, defineComponent, ref, useContext, useRouter } from "@nuxtjs/composition-api";
import { useUserApi } from "~/composables/api";
import { useLocales } from "~/composables/use-locales";
import { alert } from "~/composables/use-toast";
import { useUserRegistrationForm } from "~/composables/use-users/user-registration-form";
import { useCommonSettingsForm } from "~/composables/use-setup/common-settings-form";
import UserRegistrationForm from "~/components/Domain/User/UserRegistrationForm.vue";

export default defineComponent({
  components: { UserRegistrationForm },
  layout: "blank",
  setup() {
    // ================================================================
    // Setup
    const { $auth, $globals, i18n } = useContext();
    const api = useUserApi();

    const groupSlug = computed(() => $auth.user?.groupSlug);
    const { locale } = useLocales();
    const router = useRouter();
    const isSubmitting = ref(false);

    if (!$auth.loggedIn) {
      router.push("/login");
    } else if (!$auth.user?.admin) {
      router.push(groupSlug.value ? `/g/${groupSlug.value}` : "/login");
    }

    type Config = {
      nextButtonText: string | undefined;
      nextButtonIcon: string | undefined;
      nextButtonColor: string | undefined;
      showPrevButton: boolean;
      showNextButton: boolean;
      isSubmit: boolean;
    }

    const totalPages = 4;
    enum Pages {
      LANDING = 0,
      USER_INFO = 1,
      PAGE_2 = 2,
      CONFIRM = 3,
      END = 4,
    }

    // ================================================================
    // Forms
    const { accountDetails, credentials } = useUserRegistrationForm();
    const { commonSettingsForm } = useCommonSettingsForm();
    const commonSettings = ref({
      makeGroupRecipesPublic: false,
      useSeedData: true,
    })

    const confirmationData = computed(() => {
      return [
        {
          display: true,
          text: i18n.tc("user.email"),
          value: accountDetails.email.value,
        },
        {
          display: true,
          text: i18n.tc("user.username"),
          value: accountDetails.username.value,
        },
        {
          display: true,
          text: i18n.tc("user.full-name"),
          value: accountDetails.fullName.value,
        },
        {
          display: true,
          text: i18n.tc("user.enable-advanced-content"),
          value: accountDetails.advancedOptions.value ? i18n.tc("general.yes") : i18n.tc("general.no"),
        },
        {
          display: true,
          text: i18n.tc("group.enable-public-access"),
          value: commonSettings.value.makeGroupRecipesPublic ? i18n.tc("general.yes") : i18n.tc("general.no"),
        },
        {
          display: true,
          text: i18n.tc("user-registration.use-seed-data"),
          value: commonSettings.value.useSeedData ? i18n.tc("general.yes") : i18n.tc("general.no"),
        },
      ];
    });

    const setupCompleteLinks = ref([
      {
        section: i18n.tc("profile.data-migrations"),
        to: "/admin/backups",
        text: i18n.tc("settings.backup.backup-restore"),
        description: i18n.tc("admin.setup.restore-from-v1-backup"),
      },
      {
        to: "/group/migrations",
        text: i18n.tc("migration.recipe-migration"),
        description: i18n.tc("migration.coming-from-another-application-or-an-even-older-version-of-mealie"),
      },
      {
        section: i18n.tc("recipe.create-recipes"),
        to: computed(() => `/g/${groupSlug.value || ""}/r/create/new`),
        text: i18n.tc("recipe.create-recipe"),
        description: i18n.tc("recipe.create-recipe-description"),
      },
      {
        to: computed(() => `/g/${groupSlug.value || ""}/r/create/url`),
        text: i18n.tc("recipe.import-with-url"),
        description: i18n.tc("recipe.scrape-recipe-description"),
      },
      {
        section: i18n.tc("user.manage-users"),
        to: "/admin/manage/users",
        text: i18n.tc("user.manage-users"),
        description: i18n.tc("user.manage-users-description"),
      },
      {
        to: "/user/profile",
        text: i18n.tc("profile.manage-user-profile"),
        description: i18n.tc("admin.setup.manage-profile-or-get-invite-link"),
      },
    ]);

    // ================================================================
    // Page Navigation
    const currentPage = ref(0);
    const activeConfig = computed<Config>(() => {
      const config: Config = {
        nextButtonText: undefined,
        nextButtonIcon: undefined,
        nextButtonColor: undefined,
        showPrevButton: true,
        showNextButton: true,
        isSubmit: false,
      }

      switch (currentPage.value) {
        case Pages.LANDING:
          config.showPrevButton = false;
          config.nextButtonText = i18n.tc("general.start");
          config.nextButtonIcon = $globals.icons.forward;
          break;
        case Pages.USER_INFO:
          config.showPrevButton = false;
          config.nextButtonText = i18n.tc("general.next");
          config.nextButtonIcon = $globals.icons.forward;
          config.isSubmit = true;
          break;
        case Pages.CONFIRM:
          config.isSubmit = true;
          break;
        case Pages.END:
          config.nextButtonText = i18n.tc("general.home");
          config.nextButtonIcon = $globals.icons.home;
          config.nextButtonColor = "primary";
          config.showPrevButton = false;
          config.isSubmit = true;
          break;
      }

      return config;
    })

    // ================================================================
    // Page Submission

    async function updateUser() {
      // @ts-ignore-next-line user will never be null here
      const { response } = await api.users.updateOne($auth.user?.id, {
        ...$auth.user,
        email: accountDetails.email.value,
        username: accountDetails.username.value,
        fullName: accountDetails.fullName.value,
        advancedOptions: accountDetails.advancedOptions.value,
      })

      if (!response || response.status !== 200) {
        alert.error(i18n.tc("events.something-went-wrong"));
      } else {
        $auth.setUser({
          ...$auth.user,
          email: accountDetails.email.value,
          username: accountDetails.username.value,
          fullName: accountDetails.fullName.value,
        })
      }
    }

    async function updatePassword() {
      const { response } = await api.users.changePassword({
        currentPassword: "MyPassword",
        newPassword: credentials.password1.value,
      });

      if (!response || response.status !== 200) {
        alert.error(i18n.tc("events.something-went-wrong"));
      }
    }

    async function submitRegistration() {
      // the backend will only update the password without the "currentPassword" field if the user is the default user,
      // so we update the password first, then update the user's details
      await updatePassword().then(updateUser);
    }

    async function updateGroup() {
      // @ts-ignore-next-line user will never be null here
      const { data } = await api.groups.getOne($auth.user?.groupId);
      if (!data || !data.preferences) {
        alert.error(i18n.tc("events.something-went-wrong"));
        return;
      }

      const preferences = {
        ...data.preferences,
        privateGroup: !commonSettings.value.makeGroupRecipesPublic,
        recipePublic: commonSettings.value.makeGroupRecipesPublic,
      }

      const payload = {
        ...data,
        preferences,
      }

      // @ts-ignore-next-line user will never be null here
      const { response } = await api.groups.updateOne($auth.user?.groupId, payload);
      if (!response || response.status !== 200) {
        alert.error(i18n.tc("events.something-went-wrong"));
      }
    }

    async function seedFoods() {
      const { response } = await api.seeders.foods({ locale: locale.value })
      if (!response || response.status !== 200) {
        alert.error(i18n.tc("events.something-went-wrong"));
      }
    }

    async function seedUnits() {
      const { response } = await api.seeders.units({ locale: locale.value })
      if (!response || response.status !== 200) {
        alert.error(i18n.tc("events.something-went-wrong"));
      }
    }

    async function seedLabels() {
      const { response } = await api.seeders.labels({ locale: locale.value })
      if (!response || response.status !== 200) {
        alert.error(i18n.tc("events.something-went-wrong"));
      }
    }

    async function seedData() {
      if (!commonSettings.value.useSeedData) {
        return;
      }

      const tasks = [
        seedFoods(),
        seedUnits(),
        seedLabels(),
      ]

      await Promise.all(tasks);
    }

    async function submitCommonSettings() {
      const tasks = [
        updateGroup(),
        seedData(),
      ]

      await Promise.all(tasks);
    }

    async function submitAll() {
      const tasks = [
        submitRegistration(),
        submitCommonSettings(),
      ]

      await Promise.all(tasks);
    }

    async function handleSubmit(page: number) {
      if (isSubmitting.value) {
        return;
      }

      isSubmitting.value = true;
      switch (page) {
        case Pages.USER_INFO:
          if (await accountDetails.validate()) {
            currentPage.value += 1;
          }
          break;
        case Pages.CONFIRM:
          await submitAll();
          currentPage.value += 1;
          break;
        case Pages.END:
          router.push(groupSlug.value ? `/g/${groupSlug.value}` : "/login");
          break;
      }
      isSubmitting.value = false;
    }

    return {
      // Setup
      groupSlug,
      // Forms
      commonSettingsForm,
      commonSettings,
      confirmationData,
      setupCompleteLinks,
      // Page Navigation
      Pages,
      currentPage,
      totalPages,
      activeConfig,
      // Page Submission
      isSubmitting,
      handleSubmit,
    }
  },

  head() {
    return {
      title: this.$i18n.tc("admin.setup.first-time-setup"),
    };
  },
})
</script>
