
<script setup>

import { ref, onMounted, useTemplateRef } from 'vue';
import { Button, ProgressBar, InputDialog, Dialog, FormGroup, TextInput, InputGroup, Switch, SingleSelect } from 'pankow';
import { prettyDecimalSize } from 'pankow/utils';
import Section from '../components/Section.vue';
import SettingsItem from '../components/SettingsItem.vue';
import DomainsModel from '../models/DomainsModel.js';
import MailModel from '../models/MailModel.js';
import TasksModel from '../models/TasksModel.js';
import ServicesModel from '../models/ServicesModel.js';

const domainsModel = DomainsModel.create();
const mailModel = MailModel.create();
const tasksModel = TasksModel.create();
const servicesModel = ServicesModel.create();

const inputDialog = useTemplateRef('inputDialog');
const domains = ref([]);

const currentLocationSubdomain = ref('');
const currentLocationDomain = ref('');
const locationSubdomain = ref('');
const locationDomain = ref('');
const locationChangeBusy = ref(false);
const locationChangeMessage = ref('');
const locationChangeProgress = ref(0);

async function onChangeMailDomain() {
  locationChangeBusy.value = true;
  locationChangeMessage.value = '';
  locationChangeProgress.value = 0;

  const [error, result] = await mailModel.setLocation(locationSubdomain.value, locationDomain.value);
  if (error) return console.error(error);

  await tasksModel.wait(result, (result) => {
    locationChangeMessage.value = result.message;
    locationChangeProgress.value = result.percent;
  });

  currentLocationDomain.value = locationDomain.value;
  currentLocationSubdomain.value = locationSubdomain.value;
  locationChangeBusy.value = false;
  locationChangeMessage.value = '';
  locationChangeProgress.value = 0;
}


const maxEmailSizeBusy = ref(false);
const maxEmailSize = ref(0);
const currentMaxEmailSize = ref(0);

async function onChangeMaxEmailSize() {
  maxEmailSizeBusy.value = true;

  const [error] = await mailModel.setMaxEmailSize(parseInt(maxEmailSize.value));
  if (error) return console.error(error);

  currentMaxEmailSize.value = maxEmailSize.value;
  maxEmailSizeBusy.value = false;
}


const aclDialog = useTemplateRef('aclDialog');
const dnsblZonesError = ref('');
const dnsblZonesBusy = ref(false);
const dnsblZones = ref([]);
const dnsblZonesString = ref('');

function onShowAclDialog() {
  dnsblZonesError.value = '';
  dnsblZonesBusy.value = false;
  aclDialog.value.open();
}

async function onSubmitAcl() {
  dnsblZonesError.value = '';
  dnsblZonesBusy.value = true;

  const zones = dnsblZonesString.value.split('\n').filter((l) => { return l !== ''; });

  const [error] = await mailModel.setDnsblConfig(zones);
  if (error) {
    dnsblZonesError.value = error.body ? error.body.message : 'Internal error';
    dnsblZonesBusy.value = false;
    return console.error(error);
  }

  aclDialog.value.close();

  dnsblZones.value = zones;
  dnsblZonesBusy.value = false;
}


const mailboxSharingEnabled = ref(false);

async function onChangeMailboxSharing(value) {
  const [error] = await mailModel.setMailboxSharing(value);
  if (error) {
    mailboxSharingEnabled.value = !value;
    return console.error(error);
  }
}


const virtualAllMailEnabled = ref(false);

async function onChangeVirtualAllMail(value) {
  const [error] = await mailModel.setVirtualAllMail(value);
  if (error) {
    virtualAllMailEnabled.value = !value;
    return console.error(error);
  }
}


const ftsEnabled = ref(false);
const hasMailServiceSufficientMemory = ref(false);

async function onChangeFts(value) {
  const [error] = await mailModel.setFtsConfig(value);
  if (error) {
    ftsEnabled.value = !value;
    return console.error(error);
  }
}


const spamFilterDialog = useTemplateRef('spamFilterDialog');
const spamFilterBusy = ref(false);
const spamFilterError = ref('');
const blocklist = ref([]);
const allowlist = ref([]);
const spamCustomConfig = ref('');

function onShowSpamFilterDialog() {
  spamFilterError.value = '';
  spamFilterBusy.value = false;

  spamFilterDialog.value.open();
}

async function onSubmitSpamFilter() {
  spamFilterError.value = '';
  spamFilterBusy.value = true;

  const block = blocklist.value.split('\n').filter((l) => { return l !== ''; });
  const allow = allowlist.value.split('\n').filter((l) => { return l !== ''; });

  let [error] = await mailModel.setSpamAcl(allow, block);
  if (error) {
    spamFilterError.value = error.body ? error.body.message : 'Internal error';
    spamFilterBusy.value = false;
    return console.error(error);
  }

  [error] = await mailModel.setSpamCustomConfig(spamCustomConfig.value);
  if (error) {
    spamFilterError.value = error.body ? error.body.message : 'Internal error';
    spamFilterBusy.value = false;
    return console.error(error);
  }

  spamFilterDialog.value.close();

  blocklist.value = block.join('\n');
  allowlist.value = allow.join('\n');
  spamFilterBusy.value = false;
}

onMounted(async () => {
  let [error, result] = await domainsModel.list();
  if (error) return console.error(error);

  domains.value = result;

  [error, result] = await mailModel.location();
  if (error) return console.error(error);
  locationDomain.value = result.domain;
  locationSubdomain.value = result.subdomain;
  currentLocationDomain.value = result.domain;
  currentLocationSubdomain.value = result.subdomain;

  [error, result] = await mailModel.mailboxSharing();
  if (error) return console.error(error);
  mailboxSharingEnabled.value = result;

  [error, result] = await mailModel.virtualAllMail();
  if (error) return console.error(error);
  virtualAllMailEnabled.value = result;

  [error, result] = await mailModel.maxEmailSize();
  if (error) return console.error(error);
  maxEmailSize.value = result;
  currentMaxEmailSize.value = result;

  [error, result] = await mailModel.dnsblConfig();
  if (error) return console.error(error);
  dnsblZones.value = result;
  dnsblZonesString.value = result.join('\n');

  [error, result] = await mailModel.spamCustomConfig();
  if (error) return console.error(error);
  spamCustomConfig.value = result;

  [error, result] = await mailModel.spamAcl();
  if (error) return console.error(error);
  allowlist.value = result.allowlist.join('\n');
  blocklist.value = result.blocklist.join('\n');

  [error, result] = await mailModel.ftsConfig();
  if (error) return console.error(error);
  ftsEnabled.value = result.enabled;

  [error, result] = await servicesModel.get('mail');
  if (error) return console.error(error);
  hasMailServiceSufficientMemory.value = result.config.memoryLimit >= 3221225472; // we need at least 3GB
});

</script>

<template>
  <div class="content">
    <InputDialog ref="inputDialog"/>

    <Dialog ref="aclDialog"
      :title="$t('emails.aclDialog.title')"
      :reject-label="dnsblZonesBusy ? '' : $t('main.dialog.cancel')"
       reject-style="secondary"
      :confirm-label="$t('main.dialog.save')"
      :confirm-busy="dnsblZonesBusy"
      @confirm="onSubmitAcl()"
    >
      <form @submit.prevent="onSubmitAcl()" autocomplete="off">
        <fieldset :disabled="dnsblZonesBusy">
          <input type="submit" style="display: none"/>

          <FormGroup>
            <label for="dnsblZonesInput">{{ $t('emails.aclDialog.dnsblZones') }} <sup><a href="https://docs.cloudron.io/email/#dnsbl" class="help" target="_blank"><i class="fa fa-question-circle"></i></a></sup></label>
            <p class="small">{{ $t('emails.aclDialog.dnsblZonesInfo') }}</p>
            <textarea id="dnsblZonesInput" v-model="dnsblZonesString" :placeholder="$t('emails.aclDialog.dnsblZonesPlaceholder')" rows="4"></textarea>
          </FormGroup>

          <div class="has-error" v-if="dnsblZonesError">{{ dnsblZonesError }}</div>
        </fieldset>
      </form>
    </Dialog>

    <Dialog ref="spamFilterDialog"
      :title="$t('emails.spamFilterDialog.title')"
      :reject-label="spamFilterBusy ? '' : $t('main.dialog.cancel')"
       reject-style="secondary"
      :confirm-label="$t('main.dialog.save')"
      :confirm-busy="spamFilterBusy"
      @confirm="onSubmitSpamFilter()"
    >
      <form @submit.prevent="onSubmitSpamFilter()" autocomplete="off">
        <fieldset :disabled="spamFilterBusy">
          <input type="submit" style="display: none"/>

          <FormGroup>
            <label for="blocklistInput">{{ $t('emails.spamFilterDialog.blacklisteAddresses') }}</label>
            <p class="small">{{ $t('emails.spamFilterDialog.blacklisteAddressesInfo') }}</p>
            <textarea id="blocklistInput" v-model="blocklist" :placeholder="$t('emails.spamFilterDialog.blacklisteAddressesPlaceholder')" rows="4"></textarea>
          </FormGroup>

          <FormGroup>
            <label for="customConfigInput">{{ $t('emails.spamFilterDialog.customRules') }} <sup><a href="https://docs.cloudron.io/email/#custom-spam-filtering-rules" class="help" target="_blank"><i class="fa fa-question-circle"></i></a></sup></label>
            <textarea id="customConfigInput" v-model="spamCustomConfig" :placeholder="$t('emails.spamFilterDialog.customRulesPlaceholder')" rows="4"></textarea>
          </FormGroup>

          <div class="has-error" v-if="spamFilterError">{{ spamFilterError }}</div>
        </fieldset>
      </form>
    </Dialog>

    <Section :title="$t('emails.settings.title')" :padding="false">
      <SettingsItem wrap>
        <FormGroup style="flex-grow: 1;">
          <label>{{ $t('emails.settings.location') }}</label>
          <div v-html="$t('emails.changeDomainDialog.description')"></div>
        </FormGroup>
        <div style="display: flex; gap: 6px; align-items: center; flex-wrap: wrap;">
          <InputGroup>
            <TextInput v-model="locationSubdomain" :disabled="locationChangeBusy"/>
            <SingleSelect v-model="locationDomain" :options="domains" option-key="domain" option-label="domain" :disabled="locationChangeBusy"/>
          </InputGroup>
          <Button tool @click="onChangeMailDomain()" :plain="(currentLocationSubdomain !== locationSubdomain || currentLocationDomain !== locationDomain) ? null : true" :disabled="locationChangeBusy || (currentLocationSubdomain === locationSubdomain && currentLocationDomain === locationDomain)">{{ $t('main.dialog.save') }}</Button>
        </div>
        <template #bottom v-if="locationChangeProgress">
          <ProgressBar :value="locationChangeProgress"/>
          <div style="padding-top: 6px">{{ locationChangeMessage }}</div>
        </template>
      </SettingsItem>

      <SettingsItem>
        <FormGroup>
          <label>{{ $t('emails.mailboxSharing.title') }}</label>
          <div>{{ $t('emails.mailboxSharing.description') }}</div>
        </FormGroup>
        <Switch v-model="mailboxSharingEnabled" @change="onChangeMailboxSharing"/>
      </SettingsItem>

      <SettingsItem>
        <FormGroup>
          <label>{{ $t('emails.settings.virtualAllMail') }}</label>
          <div v-html="$t('emails.changeVirtualAllMailDialog.description')"></div>
        </FormGroup>
        <Switch v-model="virtualAllMailEnabled" @change="onChangeVirtualAllMail"/>
      </SettingsItem>

      <SettingsItem wrap>
        <FormGroup>
          <label for="maxEmailSizeInput">{{ $t('emails.settings.maxMailSize') }}</label>
          <div v-html="$t('emails.changeMailSizeDialog.description')"></div>
        </FormGroup>
        <div style="display: flex; gap: 6px; align-items: center;">
          {{ prettyDecimalSize(maxEmailSize) }}
          <input style="width: 200px" type="range" id="maxEmailSizeInput" v-model="maxEmailSize" step="1000000" min="1000000" max="1000000000" :disabled="maxEmailSizeBusy" />
          <Button @click="onChangeMaxEmailSize()" tool :plain="currentMaxEmailSize !== maxEmailSize ? null : true" :loading="maxEmailSizeBusy" :disabled="maxEmailSizeBusy || currentMaxEmailSize === maxEmailSize">{{ $t('main.dialog.save') }}</Button>
        </div>
      </SettingsItem>

      <SettingsItem>
        <FormGroup>
          <label>{{ $t('emails.settings.solrFts') }}</label>
          <div v-html="$t('emails.solrConfig.description')"></div>
        </FormGroup>
        <Switch v-model="ftsEnabled" @change="onChangeFts" :disabled="!ftsEnabled && !hasMailServiceSufficientMemory"/>
      </SettingsItem>

      <SettingsItem>
        <FormGroup>
          <label>{{ $t('emails.settings.acl') }}</label>
          <div>{{ $t('emails.settings.aclOverview', { dnsblZonesCount: dnsblZones.length }) }}</div>
        </FormGroup>
        <div style="display: flex; align-items: center">
          <Button tool plain @click="onShowAclDialog()">{{ $t('main.dialog.edit') }}</Button>
        </div>
      </SettingsItem>

      <SettingsItem>
        <FormGroup>
          <label>{{ $t('emails.settings.spamFilter') }}</label>
          <div>{{ $t('emails.settings.spamFilterOverview', { blacklistCount: blocklist.length }) }}</div>
        </FormGroup>
        <div style="display: flex; align-items: center">
          <Button tool plain @click="onShowSpamFilterDialog()">{{ $t('main.dialog.edit') }}</Button>
        </div>
      </SettingsItem>

    </Section>
  </div>
</template>
