<template>
    <f7-page :ptr="!sortable" @ptr:refresh="reload" @page:afterin="onPageAfterIn">
        <f7-navbar>
            <f7-nav-left :class="{ 'disabled': loading }" :back-link="tt('Back')" v-if="!sortable"></f7-nav-left>
            <f7-nav-left v-else-if="sortable">
                <f7-link icon-f7="xmark" :class="{ 'disabled': displayOrderSaving }" @click="cancelSort"></f7-link>
            </f7-nav-left>
            <f7-nav-title :title="templateType === TemplateType.Schedule.type ? tt('Scheduled Transactions') : tt('Transaction Templates')"></f7-nav-title>
            <f7-nav-right :class="{ 'navbar-compact-icons': true, 'disabled': loading }">
                <f7-link icon-f7="ellipsis" :class="{ 'disabled': !templates.length || sortable }" @click="showMoreActionSheet = true"></f7-link>
                <f7-link icon-f7="plus" :href="'/template/add?templateType=' + templateType" v-if="!sortable"></f7-link>
                <f7-link icon-f7="checkmark_alt" :class="{ 'disabled': displayOrderSaving || !displayOrderModified }" @click="saveSortResult" v-else-if="sortable"></f7-link>
            </f7-nav-right>
        </f7-navbar>

        <f7-list strong inset dividers class="margin-top skeleton-text" v-if="loading">
            <f7-list-item title="Template Name"
                          :key="itemIdx" v-for="itemIdx in [ 1, 2, 3 ]">
                <template #media>
                    <f7-icon f7="app_fill"></f7-icon>
                </template>
            </f7-list-item>
        </f7-list>

        <f7-list strong inset dividers class="margin-top" v-if="!loading && noAvailableTemplate">
            <f7-list-item :title="tt('No available template')"
                          :footer="tt('Once you add templates, you can long-press the Add button on the home page to quickly add a new transaction')"
                          v-if="templateType === TemplateType.Normal.type"></f7-list-item>
            <f7-list-item :title="tt('No available scheduled transactions')" v-else-if="templateType === TemplateType.Schedule.type"></f7-list-item>
            <f7-list-item :title="tt('No available template')" v-else></f7-list-item>
        </f7-list>

        <f7-list strong inset dividers sortable class="margin-top template-list"
                 :sortable-enabled="sortable"
                 v-if="!loading"
                 @sortable:sort="onSort">
            <f7-list-item swipeout
                          :class="{ 'actual-first-child': template.id === firstShowingId, 'actual-last-child': template.id === lastShowingId }"
                          :id="getTemplateDomId(template)"
                          :title="template.name"
                          :key="template.id"
                          v-for="template in templates"
                          v-show="showHidden || !template.hidden"
                          @taphold="setSortable()">
                <template #media>
                    <f7-icon :f7="templateType === TemplateType.Schedule.type ? 'clock' : 'doc_plaintext'">
                        <f7-badge color="gray" class="right-bottom-icon" v-if="template.hidden">
                            <f7-icon f7="eye_slash_fill"></f7-icon>
                        </f7-badge>
                    </f7-icon>
                </template>
                <f7-swipeout-actions :left="textDirection === TextDirection.LTR"
                                     :right="textDirection === TextDirection.RTL"
                                     v-if="sortable">
                    <f7-swipeout-button :color="template.hidden ? 'blue' : 'gray'" class="padding-horizontal"
                                        overswipe close @click="hide(template, !template.hidden)">
                        <f7-icon :f7="template.hidden ? 'eye' : 'eye_slash'"></f7-icon>
                    </f7-swipeout-button>
                </f7-swipeout-actions>
                <f7-swipeout-actions :left="textDirection === TextDirection.RTL"
                                     :right="textDirection === TextDirection.LTR"
                                     v-if="!sortable">
                    <f7-swipeout-button color="orange" close :text="tt('Edit')" @click="edit(template)"></f7-swipeout-button>
                    <f7-swipeout-button color="red" class="padding-horizontal" @click="remove(template, false)">
                        <f7-icon f7="trash"></f7-icon>
                    </f7-swipeout-button>
                </f7-swipeout-actions>
            </f7-list-item>
        </f7-list>

        <f7-actions close-by-outside-click close-on-escape :opened="showMoreActionSheet" @actions:closed="showMoreActionSheet = false">
            <f7-actions-group>
                <f7-actions-button :class="{ 'disabled': !templates || templates.length < 2 }" @click="setSortable()">{{ tt('Sort') }}</f7-actions-button>
                <f7-actions-button v-if="!showHidden" @click="showHidden = true">{{ tt('Show Hidden Transaction Templates') }}</f7-actions-button>
                <f7-actions-button v-if="showHidden" @click="showHidden = false">{{ tt('Hide Hidden Transaction Templates') }}</f7-actions-button>
            </f7-actions-group>
            <f7-actions-group>
                <f7-actions-button bold close>{{ tt('Cancel') }}</f7-actions-button>
            </f7-actions-group>
        </f7-actions>

        <f7-actions close-by-outside-click close-on-escape :opened="showDeleteActionSheet" @actions:closed="showDeleteActionSheet = false">
            <f7-actions-group>
                <f7-actions-label>{{ tt('Are you sure you want to delete this template?') }}</f7-actions-label>
                <f7-actions-button color="red" @click="remove(templateToDelete, true)">{{ tt('Delete') }}</f7-actions-button>
            </f7-actions-group>
            <f7-actions-group>
                <f7-actions-button bold close>{{ tt('Cancel') }}</f7-actions-button>
            </f7-actions-group>
        </f7-actions>
    </f7-page>
</template>

<script setup lang="ts">
import { ref, computed } from 'vue';
import type { Router } from 'framework7/types';

import { useI18n } from '@/locales/helpers.ts';
import { useI18nUIComponents, showLoading, hideLoading, onSwipeoutDeleted } from '@/lib/ui/mobile.ts';

import { useTransactionTemplatesStore } from '@/stores/transactionTemplate.ts';

import { TextDirection } from '@/core/text.ts';
import { TemplateType } from '@/core/template.ts';
import { TransactionTemplate } from '@/models/transaction_template.ts';

import { isDefined } from '@/lib/common.ts';
import {
    isNoAvailableTemplate,
    getFirstShowingId,
    getLastShowingId
} from '@/lib/template.ts';

const props = defineProps<{
    f7route: Router.Route;
    f7router: Router.Router;
}>();

const { tt, getCurrentLanguageTextDirection } = useI18n();
const { showAlert, showToast, routeBackOnError } = useI18nUIComponents();

const transactionTemplatesStore = useTransactionTemplatesStore();

const templateType = ref<number>(TemplateType.Normal.type);
const loading = ref<boolean>(true);
const loadingError = ref<unknown | null>(null);
const showHidden = ref<boolean>(false);
const sortable = ref<boolean>(false);
const templateToDelete = ref<TransactionTemplate | null>(null);
const showMoreActionSheet = ref<boolean>(false);
const showDeleteActionSheet = ref<boolean>(false);
const displayOrderModified = ref<boolean>(false);
const displayOrderSaving = ref<boolean>(false);

const textDirection = computed<TextDirection>(() => getCurrentLanguageTextDirection());
const templates = computed<TransactionTemplate[]>(() => transactionTemplatesStore.allTransactionTemplates[templateType.value] || []);
const firstShowingId = computed<string | null>(() => getFirstShowingId(templates.value, showHidden.value));
const lastShowingId = computed<string | null>(() => getLastShowingId(templates.value, showHidden.value));
const noAvailableTemplate = computed<boolean>(() => isNoAvailableTemplate(templates.value, showHidden.value));

function getTemplateDomId(template: TransactionTemplate): string {
    return 'template_' + template.id;
}

function parseTemplateIdFromDomId(domId: string): string | null {
    if (!domId || domId.indexOf('template_') !== 0) {
        return null;
    }

    return domId.substring(9); // template_
}

function init(): void {
    if (props.f7route.path === '/template/list') {
        templateType.value = TemplateType.Normal.type;
    } else if (props.f7route.path === '/schedule/list') {
        templateType.value = TemplateType.Schedule.type;
    }

    loading.value = true;

    transactionTemplatesStore.loadAllTemplates({
        templateType: templateType.value,
        force: false
    }).then(() => {
        loading.value = false;
    }).catch(error => {
        if (error.processed) {
            loading.value = false;
        } else {
            loadingError.value = error;
            showToast(error.message || error);
        }
    });
}

function reload(done?: () => void): void {
    if (sortable.value) {
        done?.();
        return;
    }

    const force = !!done;

    transactionTemplatesStore.loadAllTemplates({
        templateType: templateType.value,
        force: force
    }).then(() => {
        done?.();

        if (force) {
            showToast('Template list has been updated');
        }
    }).catch(error => {
        done?.();

        if (!error.processed) {
            showToast(error.message || error);
        }
    });
}

function edit(template: TransactionTemplate): void {
    props.f7router.navigate(`/template/edit?id=${template.id}&templateType=${template.templateType}`);
}

function hide(template: TransactionTemplate, hidden: boolean): void {
    showLoading();

    transactionTemplatesStore.hideTemplate({
        template: template,
        hidden: hidden
    }).then(() => {
        hideLoading();
    }).catch(error => {
        hideLoading();

        if (!error.processed) {
            showToast(error.message || error);
        }
    });
}

function remove(template: TransactionTemplate | null, confirm: boolean): void {
    if (!template) {
        showAlert('An error occurred');
        return;
    }

    if (!confirm) {
        templateToDelete.value = template;
        showDeleteActionSheet.value = true;
        return;
    }

    showDeleteActionSheet.value = false;
    templateToDelete.value = null;
    showLoading();

    transactionTemplatesStore.deleteTemplate({
        template: template,
        beforeResolve: (done) => {
            onSwipeoutDeleted(getTemplateDomId(template), done);
        }
    }).then(() => {
        hideLoading();
    }).catch(error => {
        hideLoading();

        if (!error.processed) {
            showToast(error.message || error);
        }
    });
}

function setSortable(): void {
    if (sortable.value) {
        return;
    }

    showHidden.value = true;
    sortable.value = true;
    displayOrderModified.value = false;
}

function saveSortResult(): void {
    if (!displayOrderModified.value) {
        showHidden.value = false;
        sortable.value = false;
        return;
    }

    displayOrderSaving.value = true;
    showLoading();

    transactionTemplatesStore.updateTemplateDisplayOrders({
        templateType: templateType.value
    }).then(() => {
        displayOrderSaving.value = false;
        hideLoading();

        showHidden.value = false;
        sortable.value = false;
        displayOrderModified.value = false;
    }).catch(error => {
        displayOrderSaving.value = false;
        hideLoading();

        if (!error.processed) {
            showToast(error.message || error);
        }
    });
}

function cancelSort(): void {
    if (!displayOrderModified.value) {
        showHidden.value = false;
        sortable.value = false;
        return;
    }

    displayOrderSaving.value = true;
    showLoading();

    transactionTemplatesStore.loadAllTemplates({
        templateType: templateType.value,
        force: false
    }).then(() => {
        displayOrderSaving.value = false;
        hideLoading();

        showHidden.value = false;
        sortable.value = false;
        displayOrderModified.value = false;
    }).catch(error => {
        displayOrderSaving.value = false;
        hideLoading();

        if (!error.processed) {
            showToast(error.message || error);
        }
    });
}

function onSort(event: { el: { id: string }; from: number; to: number }): void {
    if (!event || !event.el || !event.el.id) {
        showToast('Unable to move template');
        return;
    }

    const id = parseTemplateIdFromDomId(event.el.id);

    if (!id) {
        showToast('Unable to move template');
        return;
    }

    transactionTemplatesStore.changeTemplateDisplayOrder({
        templateType: templateType.value,
        templateId: id,
        from: event.from,
        to: event.to
    }).then(() => {
        displayOrderModified.value = true;
    }).catch(error => {
        showToast(error.message || error);
    });
}

function onPageAfterIn(): void {
    if ((!isDefined(transactionTemplatesStore.transactionTemplateListStatesInvalid[templateType.value]) || transactionTemplatesStore.transactionTemplateListStatesInvalid[templateType.value]) && !loading.value) {
        reload();
    }

    routeBackOnError(props.f7router, loadingError);
}

init();
</script>

<style>
.template-list {
    --f7-list-item-footer-font-size: var(--ebk-large-footer-font-size);
}

.template-list .item-footer {
    padding-top: 4px;
}
</style>
