let currentDataset = [];
let currentTypes = [];
let originalEditedItem = {};

function initValuesFromPHPDump() {
    currentDataset = json_dump.articles; // json_dump is set using PHP
    currentTypes = json_dump.types;
    console.log(currentDataset);
    console.log(currentTypes);
    generateTable(currentTypes);
}


$(document).ready(function () {
    initValuesFromPHPDump();
    setEditFieldValues('', '', '');
});


function generateTable(dataset) {
    for (let i = 0; i < dataset.length; i++) {
        generateLine(dataset[i]);
    }
}

function generateLine(item) {
    $.selector_cache('#categoriesTable').append(
        '<tr id="row_' + item.id + '">' +
        '<td>' + item.id + '</td>' +
        '<td>' + item.name + '</td>' +
        '<td><span class="mdi mdi-' + item.icon + '"></span></td>' +
        '<td>' +
        '<button class="btn btn-danger" id="delete_' + item.id + '" onclick="deleteItem(this)"><i class="fas fa-times"></i></button>' +
        '<button class="btn btn-primary" id="edit_' + item.id + '" onclick="editItem(this)"><i class="fas fa-edit"></i></button>' +
        '</td>' +
        '</tr>'
    );
}

function addNewItem() {
    if (isItemInputFilled()) {
        let item = {
            id: $.selector_cache('#idInput').val(),
            name: $.selector_cache('#nameInput').val(),
            icon: $.selector_cache('#iconInput').val(),
        };
        if (isIdAvailable(item.id)) {
            updateExistingItemsType(originalEditedItem.id, item.id);
            setEditFieldValues('', '', '');
            currentTypes.push(item);
            generateLine(item);
        }
    }
}

function editItem(elem) {
    if (isItemInputEmpty()) {
        let id = elem.id.replace('edit_', '');
        let item = getTypeOfId(id);
        originalEditedItem = item;
        setEditFieldValues(item.id, item.name, item.icon);
        removeItemFromList(item); // Move the item in the edit fields
    }
}

function deleteItem(elem) {
    let id = elem.id.replace('delete_', '');
    let item = getTypeOfId(id);
    updateExistingItemsType(id, undefined);
    removeItemFromList(item);
}

function removeItemFromList(item) {
    currentTypes.splice(currentTypes.indexOf(item), 1);
    $('#row_' + item.id).remove();
}

function setEditFieldValues(id, name, icon) {
    $.selector_cache('#idInput').val(id);
    $.selector_cache('#nameInput').val(name);
    $.selector_cache('#iconInput').val(icon);
}

function updateExistingItemsType(oldTypeID, newTypeID) {
    for (let i = 0; i < currentDataset.length; i++) {
        for (let k = 0; k < currentDataset[i].type.length; k++) {
            if (currentDataset[i].type[k] === oldTypeID) {
                console.log(newTypeID);
                if (newTypeID !== undefined)
                    currentDataset[i].type[k] = newTypeID;
                else
                    currentDataset[i].type.splice(k, 1);
                break;
            }
        }
    }
}

function getTypeOfId(id) {
    let item = {};
    for (let i = 0; i < currentTypes.length; i++) {
        if (currentTypes[i].id === id) {
            item = currentTypes[i];
            break;
        }
    }
    return item;
}

function isIdAvailable(id) {
    let isAvailable = true;
    for (let i = 0; i < currentTypes.length; i++) {
        if (currentTypes[i].id === id) {
            isAvailable = false;
            break;
        }
    }
    return isAvailable;
}

function isItemInputEmpty() {
    return $.selector_cache('#idInput').val() === '' &&
        $.selector_cache('#nameInput').val() === '' &&
        $.selector_cache('#iconInput').val() === '';
}

function isItemInputFilled() {
    return $.selector_cache('#idInput').val() !== '' &&
        $.selector_cache('#nameInput').val() !== '' &&
        $.selector_cache('#iconInput').val() !== '';
}

function saveDataset() {
    SaveManager.saveData(currentTypes, currentDataset);
}