function chooseCheckbox(el, callback) {
    if (!el) return;
    resetFieldError(el);

    let $parent = el.closest('.field_container');
    let $checkbox = $parent.querySelector('.checkbox')

    $checkbox.classList.toggle("checked");
    if (callback) callback($checkbox.classList.contains('checked'));
}

function getFormData(form, formData=new FormData()) {
    if (!form) return;
    let default_element_types = ['input', 'textarea', 'date'];

    let form_elements = getFormElements(form);
    if (!form_elements) return;

    for (let el of form_elements) {
        let $parent = el.closest('.field_container');
        let field_type = ''
        if ($parent) field_type = $parent.dataset.type;
        let name = $parent ? $parent.dataset.name : '';
        if (!name) name = el.name
        if (!name) name = el.dataset.name;
        let value = el.querySelector('input')? el.querySelector('input').value : ''
        if (!value && el.querySelector('textarea')) value = el.querySelector('textarea').value;

        if (field_type) {
            if (default_element_types.indexOf(field_type) > -1) {
                formData.append(name, value);
            } else if ($parent && !($parent.dataset.type in default_element_types)) {
                formData = addCustomDataToFormData($parent, formData)
            }
        } else {
            formData.append(name, value);
        }
    }

    return formData;
}

function getFormElements(form) {
    let form_elements = form.querySelectorAll('.field_container');

    return form_elements;
}

function addCustomDataToFormData(el, formData) {
    let name = el.dataset.name;
    switch (el.dataset.type) {
        case 'checkbox':
            let $checkbox = el.querySelector('.checkbox');
            let c_value = $checkbox.classList.contains('checked');
            if ($checkbox.dataset.value) c_value = $checkbox.dataset.value;

            if ($checkbox.classList.contains('checked')){
                if (formData.get(name) || formData.get(name) === false){
                    let previos_val = formData.get(name);
                    formData.delete(name);
                    formData.set(name, previos_val + "," + c_value);
                    break;
                }
            }
            if (typeof c_value === 'string'){
                if ($checkbox.classList.contains('checked')){
                    formData.append(name, c_value);
                    break;
                }
            } else {
                formData.append(name, c_value);
            }
            break;

        case 'radio':
            let $radio = el.querySelector('.radio.checked');
            if (!$radio){
                formData.append(name, '');
                break;
            }

            let r_value = $radio.closest(".cw_w_radio_inputs_radio_input").dataset.name;

            formData.append(name, r_value);
            break;

        case 'location':
            let $location = el.querySelector('input');
            let l_value = $location.dataset.id;

            formData.append(name, l_value);
            break;

        case 'select':
            let $select = el.querySelector('select');
            if (!$select) return;
            formData.append(name, $select.value);

    }
    return formData;
}

function getCargoTypesWTypeTransport (data) {
    let type_transport = data.type_transport;
    let owner_type = data.owner_type;
    let success_callback = data.success_callback;
    let error_callback = data.error_callback;

    if (!owner_type) return;

    let request_data = {
        type_transport: type_transport,
        owner_type: owner_type,
    }
    let formData = dataToFormData(request_data);

    let request = new api({
        url: '/routes/get_cargo_type_by_transport_type/',
        data: formData,
        data_type: 'formData',
        success: success_callback,
        error: error_callback,
    })

    request.ajaxRequest()
}

function getFormOwnerType(el){
    let form = el.closest('form');
    let owner_type = form.dataset.owner_type;

    return owner_type;
}

function dataToFormData(data) {
    let formData = new FormData();

    for (let key of Object.keys(data)) {
        formData.append(key, data[key]);
    }
    return formData;
}

function selectInputWContainer (el, callback) {
    if (!el) return;
    let $field = el.closest('.field_container');
    if (!$field) return;

    let $input = $field.querySelector('input');
    $input.focus()

    if (callback) callback(el);
}

function resetFieldError (el){
    if (!el) return;
    let $field = el.closest('.field_container');
    if (!$field) return;

    let $error = $field.querySelector('.error_container');
    if (!$error) return;

    if (!checkFieldEmpty($field)){
        $error.remove()
    }
}

function checkFieldEmpty($field) {
    if (!$field) return;
    let empty = true;

    switch ($field.dataset.type) {
        case 'checkbox':
            let $checkbox = $field.querySelector('.checkbox');
            let c_value = $checkbox.classList.contains('checked');
            if (c_value) empty = false;

            break;

        case 'radio':
            let $radio = $field.querySelector('.radio.checked');
            if ($radio) empty = false;

            break;

        case 'location':
            let $location = $field.querySelector('input');
            let l_value = $location.dataset.id;

            if (l_value) empty = false;
            break;

        case 'input':
            let $input = $field.querySelector('input');
            if ($input.value) empty = false;

            break;

        case 'textarea':
            let $textarea = $field.querySelector('textarea');
            if ($textarea.value) empty = false;

            break;

        case 'date':
            let $date = $field.querySelector('input');
            if ($date.value) empty = false;

            break;

        case 'select':
            let $select = el.querySelector('select');
            if (!$select) return;
            if ($select.value) empty = false;

            break;
    }
    return empty;
}

function getFormDataElValue($field) {
    if (!$field) return;

    switch ($field.dataset.type) {
        case 'checkbox':
            let $checkbox = $field.querySelector('.checkbox');
            let c_value = $checkbox.classList.contains('checked');
            return c_value;

        case 'radio':
            let $radio = $field.querySelector('.radio.checked');
            if ($radio){
                $radio = $radio.closest('.cw_w_radio_inputs_radio_input').dataset.name;
                return $radio
            } else {
                return ``
            }


        case 'location':
            let $location = $field.querySelector('input');
            let l_value = $location.dataset.id;

            return l_value;

        case 'input':
            let $input = $field.querySelector('input');

            return $input.value;

        case 'textarea':
            let $textarea = $field.querySelector('textarea');
            return $textarea.value;

        case 'date':
            let $date = $field.querySelector('input');
            return $date.value;

        case 'select':
            let $select = $field.querySelector('select');
            if (!$select) return;

            return $select.value;
    }
}

function formDataToQueryString (formData, forms) {
    let str = ``
    formData.forEach((index, name) => {
        let el = null;
        for (let i = 0; i < forms.length; i++) {
            let _el = forms[i].querySelector(`[data-name="${name}"]`)
            if (_el){
                el = _el;
                i = forms.length;
            }
        }

        if (!el) return;
        let value = getFormDataElValue(el);
        str+=`${name}=${value}&`;
    })

    return str;
}