require('./locale');

require('../css/cover.css');
require('../css/site.css');

import {
    checkIfAuth,
    clearLoginState,
    getLoginState,
    resetCheckAuth,
    setloginStateChangeEvent
} from './common';

import {
    clearDuplicatedHistory,
    deleteServerHistory,
    getHistory,
    getStorageHistory,
    parseHistory,
    parseServerToHistory,
    parseStorageToHistory,
    postHistoryToServer,
    removeHistory,
    saveHistory,
    saveStorageHistoryToServer
} from './history';

import { saveAs } from 'file-saver';
import List from 'list.js';
import S from 'string';

import Cover from './views/Cover';
import Vue from 'vue';

new Vue({
    el: '#cover-app',
    render: (h) => h(Cover)
})

const options = {
    valueNames: ['id', 'text', 'timestamp', 'fromNow', 'time', 'tags', 'pinned'],
    item: '<li class="col-xs-12 col-sm-6 col-md-6 col-lg-4">\
            <span class="id" style="display:none;"></span>\
            <a href="#">\
                <div class="item">\
                    <div class="ui-history-pin fa fa-thumb-tack fa-fw"></div>\
                    <div class="ui-history-close fa fa-close fa-fw" data-toggle="modal" data-target=".delete-modal"></div>\
                    <div class="content">\
                        <h4 class="text"></h4>\
                        <p>\
                            <i><i class="fa fa-clock-o"></i> visited </i><i class="fromNow"></i>\
                            <br>\
                            <i class="timestamp" style="display:none;"></i>\
                            <i class="time"></i>\
                        </p>\
                        <p class="tags"></p>\
                    </div>\
                </div>\
            </a>\
           </li>',
    page: 18,
    plugins: [
        ListPagination({
            outerWindow: 1
        })
    ]
};
const historyList = new List('history', options);

migrateHistoryFromTempCallback = pageInit;
setloginStateChangeEvent(pageInit);

pageInit();

function pageInit() {
    checkIfAuth(
        data => {
            $('.ui-signin').hide();
            $('.ui-or').hide();
            $('.ui-welcome').show();
            if (data.photo) $('.ui-avatar').prop('src', data.photo).show();
            else $('.ui-avatar').prop('src', '').hide();
            $('.ui-name').html(data.name);
            $('.ui-signout').show();
            $(".ui-history").click();
            parseServerToHistory(historyList, parseHistoryCallback);
        },
        () => {
            $('.ui-signin').show();
            $('.ui-or').show();
            $('.ui-welcome').hide();
            $('.ui-avatar').prop('src', '').hide();
            $('.ui-name').html('');
            $('.ui-signout').hide();
            parseStorageToHistory(historyList, parseHistoryCallback);
        }
    );
}

$(".masthead-nav li").click(function () {
    $(this).siblings().removeClass("active");
    $(this).addClass("active");
});

$(".ui-home").click(() => {
    if (!$("#home").is(':visible')) {
        $(".section:visible").hide();
        $("#home").fadeIn();
    }
});

$(".ui-history").click(() => {
    if (!$("#history").is(':visible')) {
        $(".section:visible").hide();
        $("#history").fadeIn();
    }
});

function checkHistoryList() {
    if ($("#history-list").children().length > 0) {
        $('.pagination').show();
        $(".ui-nohistory").hide();
        $(".ui-import-from-browser").hide();
    } else if ($("#history-list").children().length == 0) {
        $('.pagination').hide();
        $(".ui-nohistory").slideDown();
        getStorageHistory(data => {
            if (data && data.length > 0 && getLoginState() && historyList.items.length == 0) {
                $(".ui-import-from-browser").slideDown();
            }
        });
    }
}

function parseHistoryCallback(list, notehistory) {
    checkHistoryList();
    //sort by pinned then timestamp
    list.sort('', {
        sortFunction(a, b) {
            const notea = a.values();
            const noteb = b.values();
            if (notea.pinned && !noteb.pinned) {
                return -1;
            } else if (!notea.pinned && noteb.pinned) {
                return 1;
            } else {
                if (notea.timestamp > noteb.timestamp) {
                    return -1;
                } else if (notea.timestamp < noteb.timestamp) {
                    return 1;
                } else {
                    return 0;
                }
            }
        }
    });
    // parse filter tags
    const filtertags = [];
    for (let i = 0, l = list.items.length; i < l; i++) {
        const tags = list.items[i]._values.tags;
        if (tags && tags.length > 0) {
            for (let j = 0; j < tags.length; j++) {
                //push info filtertags if not found
                let found = false;
                if (filtertags.includes(tags[j]))
                    found = true;
                if (!found)
                    filtertags.push(tags[j]);
            }
        }
    }
    buildTagsFilter(filtertags);
}

// update items whenever list updated
historyList.on('updated', e => {
    for (let i = 0, l = e.items.length; i < l; i++) {
        const item = e.items[i];
        if (item.visible()) {
            const itemEl = $(item.elm);
            const values = item._values;
            const a = itemEl.find("a");
            const pin = itemEl.find(".ui-history-pin");
            const tagsEl = itemEl.find(".tags");
            //parse link to element a
            a.attr('href', `${serverurl}/${values.id}`);
            //parse pinned
            if (values.pinned) {
                pin.addClass('active');
            } else {
                pin.removeClass('active');
            }
            //parse tags
            const tags = values.tags;
            if (tags && tags.length > 0 && tagsEl.children().length <= 0) {
                const labels = [];
                for (let j = 0; j < tags.length; j++) {
                    //push into the item label
                    labels.push(`<span class='label label-default'>${tags[j]}</span>`);
                }
                tagsEl.html(labels.join(' '));
            }
        }
    }
    $(".ui-history-close").off('click');
    $(".ui-history-close").on('click', historyCloseClick);
    $(".ui-history-pin").off('click');
    $(".ui-history-pin").on('click', historyPinClick);
});

function historyCloseClick(e) {
    e.preventDefault();
    const id = $(this).closest("a").siblings("span").html();
    const value = historyList.get('id', id)[0]._values;
    $('.ui-delete-modal-msg').text('Do you really want to delete below history?');
    $('.ui-delete-modal-item').html(`<i class="fa fa-file-text"></i> ${value.text}<br><i class="fa fa-clock-o"></i> ${value.time}`);
    clearHistory = false;
    deleteId = id;
}

function historyPinClick(e) {
    e.preventDefault();
    const $this = $(this);
    const id = $this.closest("a").siblings("span").html();
    const item = historyList.get('id', id)[0];
    const values = item._values;
    let pinned = values.pinned;
    if (!values.pinned) {
        pinned = true;
        item._values.pinned = true;
    } else {
        pinned = false;
        item._values.pinned = false;
    }
    checkIfAuth(() => {
        postHistoryToServer(id, {
            pinned
        }, (err, result) => {
            if (!err) {
                if (pinned)
                    $this.addClass('active');
                else
                    $this.removeClass('active');
            }
        });
    }, () => {
        getHistory(notehistory => {
            for(let i = 0; i < notehistory.length; i++) {
                if (notehistory[i].id == id) {
                    notehistory[i].pinned = pinned;
                    break;
                }
            }
            saveHistory(notehistory);
            if (pinned)
                $this.addClass('active');
            else
                $this.removeClass('active');
        });
    });
}

//auto update item fromNow every minutes
setInterval(updateItemFromNow, 60000);

function updateItemFromNow() {
    const items = $('.item').toArray();
    for (let i = 0; i < items.length; i++) {
        const item = $(items[i]);
        const timestamp = parseInt(item.find('.timestamp').text());
        item.find('.fromNow').text(moment(timestamp).fromNow());
    }
}

var clearHistory = false;
var deleteId = null;

function deleteHistory() {
    checkIfAuth(() => {
        deleteServerHistory(deleteId, (err, result) => {
            if (!err) {
                if (clearHistory) {
                    historyList.clear();
                    checkHistoryList();
                } else {
                    historyList.remove('id', deleteId);
                    checkHistoryList();
                }
            }
            $('.delete-modal').modal('hide');
            deleteId = null;
            clearHistory = false;
        });
    }, () => {
        if (clearHistory) {
            saveHistory([]);
            historyList.clear();
            checkHistoryList();
            deleteId = null;
        } else {
            if (!deleteId) return;
            getHistory(notehistory => {
                const newnotehistory = removeHistory(deleteId, notehistory);
                saveHistory(newnotehistory);
                historyList.remove('id', deleteId);
                checkHistoryList();
                deleteId = null;
            });
        }
        $('.delete-modal').modal('hide');
        clearHistory = false;
    });
}

$(".ui-delete-modal-confirm").click(() => {
    deleteHistory();
});

$(".ui-import-from-browser").click(() => {
    saveStorageHistoryToServer(() => {
        parseStorageToHistory(historyList, parseHistoryCallback);
    });
});

$(".ui-save-history").click(() => {
    getHistory(data => {
        const history = JSON.stringify(data);
        const blob = new Blob([history], {
            type: "application/json;charset=utf-8"
        });
        saveAs(blob, `hackmd_history_${moment().format('YYYYMMDDHHmmss')}`);
    });
});

$(".ui-open-history").bind("change", e => {
    const files = e.target.files || e.dataTransfer.files;
    const file = files[0];
    const reader = new FileReader();
    reader.onload = () => {
        const notehistory = JSON.parse(reader.result);
        //console.log(notehistory);
        if (!reader.result) return;
        getHistory(data => {
            let mergedata = data.concat(notehistory);
            mergedata = clearDuplicatedHistory(mergedata);
            saveHistory(mergedata);
            parseHistory(historyList, parseHistoryCallback);
        });
        $(".ui-open-history").replaceWith($(".ui-open-history").val('').clone(true));
    };
    reader.readAsText(file);
});

$(".ui-clear-history").click(() => {
    $('.ui-delete-modal-msg').text('Do you really want to clear all history?');
    $('.ui-delete-modal-item').html('There is no turning back.');
    clearHistory = true;
    deleteId = null;
});

$(".ui-refresh-history").click(() => {
    const lastTags = $(".ui-use-tags").select2('val');
    $(".ui-use-tags").select2('val', '');
    historyList.filter();
    const lastKeyword = $('.search').val();
    $('.search').val('');
    historyList.search();
    $('#history-list').slideUp('fast');
    $('.pagination').slideUp('fast');

    resetCheckAuth();
    historyList.clear();
    parseHistory(historyList, (list, notehistory) => {
        parseHistoryCallback(list, notehistory);
        $(".ui-use-tags").select2('val', lastTags);
        $(".ui-use-tags").trigger('change');
        historyList.search(lastKeyword);
        $('.search').val(lastKeyword);
        checkHistoryList();
        $('#history-list').slideDown('fast');
        $('.pagination').slideDown('fast');
    });
});

$(".ui-logout").click(() => {
    clearLoginState();
    location.href = `${serverurl}/logout`;
});

let filtertags = [];
$(".ui-use-tags").select2({
    placeholder: $(".ui-use-tags").attr('placeholder'),
    multiple: true,
    data() {
        return {
            results: filtertags
        };
    }
});
$('.select2-input').css('width', 'inherit');
buildTagsFilter([]);

function buildTagsFilter(tags) {
    for (let i = 0; i < tags.length; i++)
        tags[i] = {
            id: i,
            text: S(tags[i]).unescapeHTML().s
        };
    filtertags = tags;
}
$(".ui-use-tags").on('change', function () {
    const tags = [];
    const data = $(this).select2('data');
    for (let i = 0; i < data.length; i++)
        tags.push(data[i].text);
    if (tags.length > 0) {
        historyList.filter(item => {
            const values = item.values();
            if (!values.tags) return false;
            let found = false;
            for (let i = 0; i < tags.length; i++) {
                if (values.tags.includes(tags[i])) {
                    found = true;
                    break;
                }
            }
            return found;
        });
    } else {
        historyList.filter();
    }
    checkHistoryList();
});

$('.search').keyup(() => {
    checkHistoryList();
});