<!-- (C) 2022 - ntop.org     -->
<template>
    <slot name="custom_header2"></slot>
    <div ref="table_container" :id="id">
        <Loading v-if="loading"></Loading>
        <div class="button-group mb-2"> <!-- TableHeader -->
            <div style="float:left;margin-top:0.5rem;">
                <label>
                    Show
                    <select v-model="per_page" @change="change_per_page">
                        <option v-for="pp in per_page_options" :value="pp">{{ pp }}</option>
                    </select>
                    Entries
                </label>
            </div>
            <div style="text-align:right;" class="form-group ">
            </div>

            <div style="text-align:right;" class="form-group ">
                <slot name="custom_header"></slot>

                <div v-if="enable_search" class="d-inline">
                    <label>{{ _i18n('search') }}:
                        <input type="search" v-model="map_search" @input="on_change_map_search" class="">
                    </label>
                </div>

                <button class="btn btn-link me-1" type="button" @click="reset_column_size">
                    <i class="fas fa-columns"></i>
                </button>
                <button class="btn btn-link me-1" type="button" @click="refresh_table()">
                    <i class="fas fa-refresh"></i>
                </button>
                <div v-if="show_autorefresh > 0" class="d-inline-block">
                    <Switch v-model:value="enable_autorefresh" class="me-2 mt-1" :title="autorefresh_title" style=""
                        @change_value="update_autorefresh">
                    </Switch>
                </div>

                <Dropdown :id="id + '_dropdown'" ref="dropdown"> <!-- Dropdown columns -->
                    <template v-slot:title>
                        <i class="fas fa-eye"></i>
                    </template>
                    <template v-slot:menu>
                        <div v-for="col in columns_wrap" class="form-check form-switch ms-1">
                            <input class="form-check-input" style="cursor:pointer;" :checked="col.visible == true"
                                @click="change_columns_visibility(col)" type="checkbox" :id="get_col_id(col)">
                            <label class="form-check-label" :for="get_col_id(col)" v-html="print_column_name(col.data)">
                            </label>
                        </div>
                    </template>
                </Dropdown> <!-- Dropdown columns -->
            </div>
        </div> <!-- TableHeader -->

        <div :key="table_key" style="overflow:auto;width:100%;"> <!-- Table -->
            <div v-if="display_message == true" class="centered-message">
                <span v-html="message_to_display"></span>
            </div>
            <table ref="table" class="table table-striped table-bordered ml-0 mr-0 mb-0 ntopng-table"
                :class="[(display_message || loading) ? 'ntopng-gray-out' : '']" data-resizable="true"
                :data-resizable-columns-id="id"> <!-- Table -->
                <thead>
                    <tr>
                        <template v-for="(col, col_index) in columns_wrap">
                            <th v-if="col.visible" scope="col" :class="{ 'pointer': col.sortable, 'unset': !col.sortable, }"
                                style="white-space: nowrap;" @click="change_column_sort(col, col_index)"
                                :data-resizable-column-id="get_column_id(col.data)">
                                <div style="display:flex;">
                                    <span v-html="print_column_name(col.data)" class="wrap-column"></span>
                                    <!-- <i v-show="col.sort == 0" class="fa fa-fw fa-sort"></i> -->

                                    <i v-show="col.sort == 1 && col.sortable" class="fa fa-fw fa-sort-up"></i>
                                    <i v-show="col.sort == 2 && col.sortable" class="fa fa-fw fa-sort-down"></i>
                                </div>
                            </th>
                        </template>
                    </tr>
                </thead>
                <tbody>
                    <tr v-if="!changing_column_visibility && !changing_rows" v-for="row in active_rows">
                        <template v-for="(col, col_index) in columns_wrap">
                            <td v-if="col.visible" scope="col" class="">
                                <div v-if="print_html_row != null && print_html_row(col.data, row, true) != null"
                                    :class="col.classes" class="wrap-column" :style="col.style"
                                    v-html="print_html_row(col.data, row)">
                                </div>
                                <div :style="col.style" style="" class="wrap-column margin-sm" :class="col.classes">
                                    <VueNode :key="row"
                                        v-if="print_vue_node_row != null && print_vue_node_row(col.data, row, vue_obj, true) != null"
                                        :content="print_vue_node_row(col.data, row, vue_obj)"></VueNode>
                                </div>
                            </td>
                        </template>
                    </tr>
                    <tr v-if="display_empty_rows && active_rows.length < per_page"
                        v-for="index in (per_page - active_rows.length)">
                        <template v-for="(col, col_index) in columns_wrap">
                            <td style="" class="" v-if="col.visible" scope="col">
                                <div class="wrap-column"></div>
                            </td>
                        </template>
                    </tr>
                </tbody>
            </table> <!-- Table -->
        </div> <!-- Table div-->

        <div>
            <SelectTablePage ref="select_table_page" :key="select_pages_key" :total_rows="total_rows" :per_page="per_page"
                @change_active_page="change_active_page">
            </SelectTablePage>
        </div>

        <div v-if="query_info != null" class="mt-2">
            <div class="text-end">
                <small style="" class="query text-end"><span class="records">{{ query_info.num_records_processed
                }}</span>.</small>
            </div>
            <div class="text-start">
                <small id="historical_flows_table-query-time" style="" class="query">Query performed in <span
                        class="seconds">{{ (query_info.query_duration_msec / 1000).toFixed(3) }}</span> seconds. <span
                        id="historical_flows_table-query" style="cursor: pointer;" class="badge bg-secondary"
                        :title=query_info.query @click="copy_query_into_clipboard"
                        ref="query_info_sql_button">SQL</span></small>
            </div>
        </div>
    </div>
</template>

<script setup>
import { ref, onMounted, computed, watch, nextTick } from "vue";
import { h } from 'vue';
import { ntopng_utility, ntopng_url_manager } from "../services/context/ntopng_globals_services.js";
import { default as Dropdown } from "./dropdown.vue";
import { default as SelectTablePage } from "./select_table_page.vue";
import { default as VueNode } from "./vue_node.vue";
import { default as Loading } from "./loading.vue";
import { default as Switch } from "./switch.vue";

/* rows_loaded, is emitted every time the rows are loaded,
 * loaded,      is emitted when the table is loaded (mounted)
 */
const emit = defineEmits(['custom_event', 'loaded', 'rows_loaded']);
const vue_obj = {
    emit,
    h,
    nextTick,
};

const props = defineProps({
    id: String,
    columns: Array,
    get_rows: Function, // async (active_page: number, per_page: number, columns_wrap: any[], search_map: string, first_get_rows: boolean) => { total_rows: number, rows: any[], query_info: { query_duration_msec: number, num_records_processed: string, query: string } }
    get_column_id: Function,
    print_column_name: Function,
    print_html_row: Function,
    print_vue_node_row: Function,
    f_is_column_sortable: Function,
    f_sort_rows: Function,
    f_get_column_classes: Function,
    f_get_column_style: Function,
    enable_search: Boolean,
    display_empty_rows: Boolean,
    show_autorefresh: Number, // autorefresh seconds, if null or 0 autorefresh switch will not showed
    default_sort: Object, // { column_id: string, sort: number (0, 1, 2) }
    csrf: String,
    paging: Boolean,
    display_message: Boolean,
    message_to_display: String,
});

const _i18n = (t) => i18n(t);

const show_table = ref(true);
const table_container = ref(null);
const table = ref(null);
const dropdown = ref(null);
const rows_html_element = ref([]);
let active_page = 0;
let rows = [];
const columns_wrap = ref([]);
const active_rows = ref([]);
const total_rows = ref(0);
const per_page_options = [10, 20, 40, 50, 80, 100];
const per_page = ref(10);
const store = window.store;
const map_search = ref("");

const select_table_page = ref(null);
const loading = ref(false);
const query_info = ref(null);
const query_info_sql_button = ref(null);
const changing_column_visibility = ref(false);
const changing_rows = ref(false);
const enable_autorefresh = ref(false);

onMounted(async () => {
    if (props.columns != null) {
        load_table();
    }
});

const autorefresh_title = computed(() => {
    if (props.show_autorefresh == null || props.show_autorefresh <= 0) {
        return "";
    }
    let text = _i18n("table.autorefresh");
    return text.replace("%time", props.show_autorefresh);
});

watch(() => [props.id, props.columns], (cur_value, old_value) => {
    load_table();
}, { flush: 'pre' });

function get_col_id(col) {
    if(col != null && col.id != null) {
        return col.id;
    } else {
        return "toggle-Begin";
    }
}
async function load_table() {
    await set_columns_wrap();
    await set_rows();
    set_columns_resizable();
    await nextTick();
    dropdown.value.load_menu();
    emit("loaded");
}

let autorefresh_interval;
function update_autorefresh() {
    if (enable_autorefresh.value == false) {
        clearInterval(autorefresh_interval);
        return;
    }
    autorefresh_interval = setInterval(() => {
        change_active_page();
    }, props.show_autorefresh * 1000);
}

async function change_columns_visibility(col) {
    changing_column_visibility.value = true;
    col.visible = !col.visible;
    if (props.paging) {
        await set_rows();
    }
    // redraw_table();
    await redraw_table_resizable();
    await set_columns_visibility();
    // set_columns_resizable();
    changing_column_visibility.value = false;
}

async function redraw_table_resizable() {
    await redraw_table();
    set_columns_resizable();
}

const table_key = ref(0);
async function redraw_table() {
    table_key.value += 1;
    await nextTick();
}

function set_columns_resizable() {
    let options = {
        // selector: table.value,
        // padding: 0,
        store: store,
        minWidth: 32,
        // padding: -50,
        // maxWidth: 150,
    };
    $(table.value).resizableColumns(options);
    // $(table.value).css('width', '100%');
}

async function get_columns_visibility_dict() {
    if (props.csrf == null) { return {}; }
    const params = { table_id: props.id };
    const url_params = ntopng_url_manager.obj_to_url_params(params);
    const url = `${http_prefix}/lua/rest/v2/get/tables/user_columns_config.lua?${url_params}`;
    let columns_visible = await ntopng_utility.http_request(url);
    let columns_visible_dict = {};
    columns_visible.forEach((c) => {
        columns_visible_dict[c.id] = c;
    });
    return columns_visible_dict;
}

async function set_columns_visibility() {
    if (props.csrf == null) { return; }
    let params = { table_id: props.id, visible_columns_ids: [], csrf: props.csrf };
    params.visible_columns_ids = columns_wrap.value.map((c, i) => {
        return {
            id: c.id,
            visible: c.visible,
            order: c.order,
            sort: c.sort,
        };
    });
    const url = `${http_prefix}/lua/rest/v2/add/tables/user_columns_config.lua`;
    await ntopng_utility.http_post_request(url, params);
}

async function set_columns_wrap() {
    let cols_visibility_dict = await get_columns_visibility_dict();
    let is_table_not_sorted = true;
    for (let id in cols_visibility_dict) {
        is_table_not_sorted &= (cols_visibility_dict[id]?.sort);
    }
    columns_wrap.value = props.columns.map((c, i) => {
        let classes = [];
        let style = "";
        if (props.f_get_column_classes != null) {
            classes = props.f_get_column_classes(c);
        }
        if (props.f_get_column_style != null) {
            style = props.f_get_column_style(c);
        }
        let id = props.get_column_id(c);
        let col_opt = cols_visibility_dict[id];
        let sort = col_opt?.sort;
        if (is_table_not_sorted == true && sort == null && props.default_sort != null && id == props.default_sort.column_id) {
            sort = props.default_sort.sort;
        } else if (col_opt?.sort) {
            sort = col_opt?.sort;
        } else {
            sort = 0;
        }
        return {
            id,
            visible: col_opt?.visible == null || col_opt?.visible == true,
            sort: sort,
            sortable: is_column_sortable(c),
            order: col_opt?.order || i,
            classes,
            style,
            data: c,
        };
    });
    await set_columns_visibility();
}

async function reset_column_size() {
    props.columns.forEach((c) => {
        let id = `${props.id}-${props.get_column_id(c)}`;
        store.remove(id);
    });
    await redraw_table_resizable();
}

function change_per_page() {
    redraw_select_pages();
    change_active_page(0);
}

const select_pages_key = ref(0);
function redraw_select_pages() {
    select_pages_key.value += 1;
}

const table_content_id = ref(0);
function refresh_table_content() {
    table_content_id.value += 1;
}

async function change_active_page(new_active_page) {
    if (new_active_page != null) {
        active_page = new_active_page;
    }
    if (active_page == null) {
        active_page = 0;
    }
    if (props.paging == true || force_refresh) {
        await set_rows();
    } else {
        set_active_rows();
    }
    refresh_table_content();
}

async function change_column_sort(col, col_index) {
    if (!col.sortable) {
        return;
    }
    col.sort = (col.sort + 1) % 3;
    columns_wrap.value.filter((c, i) => i != col_index).forEach((c) => c.sort = 0);
    if (col.sort == 0) { return; }
    if (props.paging) {
        await set_rows();
    } else {
        set_active_rows();
    }
    await set_columns_visibility();
}

function get_sort_function() {
    if (props.f_sort_rows != null) {
        return props.f_sort_rows;
    }
    return (col, r0, r1) => {
        let r0_col = props.print_html_row(col.data, r0);
        let r1_col = props.print_html_row(col.data, r1);
        if (col.sort == 1) {
            return r0_col.localeCompare(r1_col);
        }
        return r1_col.localeCompare(r0_col);
    };
}

let force_refresh = false;
let force_disable_loading = false;

/* ********************************************* */

/*  Function used to reload the table contents, 
    set disable_loading to true if no loading is needed and
    consequently do not jump to the first page, but
    just reload the current page
*/
async function refresh_table(disable_loading) {
    /* NOTE: first refresh_table is called then set_rows */
    force_refresh = true;
    force_disable_loading = disable_loading || false;

    if(force_disable_loading) {
        /* In case of disabled loading, reload the same page */
        select_table_page.value.change_active_page();
    } else {
        /* Otherwise reload from page 1 */
        select_table_page.value.change_active_page(0, 0);
    }
    await nextTick();

    /* Reset the refresh/loading params */
    force_refresh = false;
    force_disable_loading = false;
}

/* ********************************************* */

let first_get_rows = true;
async function set_rows() {
    // changing_rows.value = true;
    loading.value = true && !force_disable_loading;
    let res = await props.get_rows(active_page, per_page.value, columns_wrap.value, map_search.value, first_get_rows);
    query_info.value = null;
    if (res.query_info != null) {
        query_info.value = res.query_info;
    }
    first_get_rows = false;
    total_rows.value = res.rows.length;
    if (props.paging == true) {
        total_rows.value = res.total_rows;
    }
    rows = res.rows;
    set_active_rows();
    loading.value = false;
    emit('rows_loaded', res);
}

function is_column_sortable(col) {
    if (props.f_is_column_sortable != null) {
        return props.f_is_column_sortable(col);
    }
    return true;
}

function set_active_rows() {
    let start_row_index = 0;
    if (props.paging == false) {
        start_row_index = active_page * per_page.value;
    }
    if (props.paging == false) {
        let f_sort = get_sort_function();
        let col_to_sort = get_column_to_sort();
        rows = rows.sort((r0, r1) => {
            return f_sort(col_to_sort, r0, r1);
        });
    }
    active_rows.value = rows.slice(start_row_index, start_row_index + per_page.value);
}

function get_column_to_sort() {
    let col_to_sort = columns_wrap.value.find((c) => c.sort != 0);
    return col_to_sort;
}

let map_search_change_timeout;
async function on_change_map_search() {
    let timeout = 1000;
    if (map_search_change_timeout != null) {
        clearTimeout(map_search_change_timeout);
    } else {
        timeout = 0;
    }
    map_search_change_timeout = setTimeout(async () => {
        await set_rows();
        map_search_change_timeout = null;
    }, timeout);

}

function copy_query_into_clipboard($event) {
    NtopUtils.copyToClipboard(query_info.value.query, query_info_sql_button.value);
}

function get_columns_defs() {
    return columns_wrap.value;
}

function get_rows_num() {
    return total_rows.value;
}

defineExpose({ load_table, refresh_table, get_columns_defs, get_rows_num });

</script>

<style scoped>
.sticky {
    position: sticky;
    left: 0;
    background-color: white;
}

.wrap-column {
    text-overflow: ellipsis;
    white-space: nowrap;
    overflow: hidden;
    width: 100%;
}

.pointer {
    cursor: pointer;
}

.unset {
    cursor: unset;
}

.link-button {
    color: var(--bs-dropdown-link-color);
    cursor: pointer;
}

.link-disabled {
    pointer-events: none;
    color: #ccc;
}

td {
    height: 2.5rem;
}

.margin-sm {
    margin-bottom: -0.25rem;
    margin-top: -0.25rem;
}
</style>
