{% comment %}
Main Tom Select template.

**Context Variables:**
- widget: Contains configuration, plugin settings, URLs, selected items, etc.

**Blocks:**
- block select_element: Override to change the way the <select> is included.
- block tomselect_init: Override to alter the TomSelect initialization logic, including event handlers, fetch calls, and callback methods.
- block tomselect_plugins: Insert or override plugin-related JS configuration.
- block tomselect_url_setup: Define the originalFirstUrl function for constructing the initial URL.
- block tomselect_config: Define the main TomSelect configuration object.
- block tomselect_render: Define the render object for customizing the appearance of options, items, and other elements.
- block tomselect_extra_js: Add custom JS at the end of initialization.

**Overriding Example:**
To override only the plugin configuration, you might create:
`templates/django_tomselect/tomselect.html`:

{% block tomselect_plugins %}
    // Your custom plugin code here
{% endblock tomselect_plugins %}
This will append your changes to the default configuration.

To completely replace initialization logic, you could:
{% block tomselect_init %}
    // Your entirely custom initialization code here
{% endblock tomselect_init %}
This will replace the original code block if you use `{% block ... %}{% endblock ... %}` without super.

You can also extend and call `{{ block.super }}` to augment existing logic.

{% endcomment %}

{% load i18n %}

{% include "django_tomselect/tomselect_setup.html" %}

{% block select_element %}
    {% include "django_tomselect/render/select.html" with widget=widget %}
{% endblock select_element %}

<script>
    {% block tomselect_init %}
        (function() {
            const elementId = '{% if "id" in widget.attrs.keys and widget.attrs.id %}{{ widget.attrs.id }}{% else %}{{ widget.name }}{% endif %}';
            const element = document.getElementById(elementId);
            if (!element) return;

            // Create a unique reset variable name based on the element ID
            const resetVarName = 'wasReset_' + elementId.replace(/-/g, '_');
            window[resetVarName] = false;

            function logCallback(data) {
                console.log("%c Received callback data:", "color:red;", data);
            }

            {% block tomselect_url_setup %}
                // Constructing the originalFirstUrl function based on query and filters
                var originalFirstUrl = function(query) {
                    var url = '{{ widget.autocomplete_url }}' + '?q=' + encodeURIComponent(query){% if 'autocomplete_params' in widget.keys and not widget.autocomplete_params == '' %} + '&{{ widget.autocomplete_params|safe }}'{% endif %};
                    {% if "dependent_field" in widget.keys %}
                        const dependentField = document.getElementById('id_{{ widget.dependent_field }}');
                        const dependentValue = dependentField ? dependentField.value : '';
                        url = `${url}&f='{{ widget.dependent_field }}__{{ widget.dependent_field_lookup }}=${dependentValue}'`;
                    {% endif %}
                    {% if "exclude_field" in widget.keys %}
                        const excludeField = document.getElementById('id_{{ widget.exclude_field }}');
                        const excludeValue = excludeField ? excludeField.value : '';
                        url = `${url}&e='{{ widget.exclude_field }}__{{ widget.exclude_field_lookup }}=${excludeValue}'`;
                    {% endif %}
                    return url;
                };
            {% endblock tomselect_url_setup %}

            {% block tomselect_config %}
                const config = {
                    valueField: '{{ widget.value_field }}',
                    labelField: '{{ widget.label_field }}',
                    searchField: [],
                    highlight: {% if widget.highlight %}true{% else %}false{% endif %},
                    openOnFocus: {% if widget.open_on_focus %}true{% else %}false{% endif %},
                    maxOptions: {% if widget.max_options %}{{ widget.max_options }}{% else %}null{% endif %},
                    preload: {% if widget.preload == "focus" %}'focus'{% elif widget.preload %}true{% else %}false{% endif %},
                    maxItems: {% if not widget.is_multiple %}1{% else %}{% if widget.max_items %}{{ widget.max_items }}{% else %}null{% endif %}{% endif %},
                    showValueField: {% if 'dropdown_header' in widget.plugins.keys and widget.plugins.dropdown_header.show_value_field %}true{% else %}false{% endif %},
                    create: {% if 'create' in widget.keys and widget.create %}true{% else %}false{% endif %},
                    resetVarName: resetVarName,
                    originalFirstUrl: originalFirstUrl,
                    {% if "dependent_field" in widget.keys %}
                        dependentField: 'id_{{ widget.dependent_field }}',
                    {% endif %}
                    {% if "exclude_field" in widget.keys %}
                        excludeField: 'id_{{ widget.exclude_field }}',
                    {% endif %}

                    {% block tomselect_plugins %}
                        plugins: {
                            {% if 'checkbox_options' in widget.plugins.keys and widget.plugins.checkbox_options %}
                                checkbox_options: true,
                            {% endif %}

                            {% if 'clear_button' in widget.plugins.keys %}
                                clear_button: {
                                    title: '{{ widget.plugins.clear_button.title }}',
                                    className: '{{ widget.plugins.clear_button.class_name }}'
                                },
                            {% endif %}

                            {% comment %} {% if 'dropdown_header' in widget.plugins.keys %}
                                dropdown_header: {
                                    title: '{{ widget.plugins.dropdown_header.title }}',
                                    header_class: '{{ widget.plugins.dropdown_header.header_class }}',
                                    title_row_class: '{{ widget.plugins.dropdown_header.title_row_class }}',
                                    label_class: '{{ widget.plugins.dropdown_header.label_class }}',
                                    value_field_label: '{{ widget.plugins.dropdown_header.value_field_label }}',
                                    label_field_label: '{{ widget.plugins.dropdown_header.label_field_label }}',
                                    label_col_class: '{{ widget.plugins.dropdown_header.label_col_class }}',
                                    show_value_field: {% if widget.plugins.dropdown_header.show_value_field %}true{% else %}false{% endif %},
                                    extra_columns: {{ widget.plugins.dropdown_header.extra_columns|safe }},
                                    extra_headers: {{ widget.plugins.dropdown_header.extra_headers|safe }},
                                    extra_values: {{ widget.plugins.dropdown_header.extra_values|safe }}
                                },
                            {% endif %} {% endcomment %}

                            {% if 'dropdown_header' in widget.plugins.keys %}
                                dropdown_header:{
                                    title: '{% if widget.plugins.dropdown_header.title %}{{ widget.plugins.dropdown_header.title }}{% else %}Select an option{% endif %}',
                                    headerClass: '{{ widget.plugins.dropdown_header.header_class }}',
                                    {% include "django_tomselect/render/dropdown_header.html" with widget=widget %}
                                },
                            {% endif %}


                            {% comment %} {% if 'dropdown_footer' in widget.plugins.keys %}
                                dropdown_footer: {
                                    title: '{{ widget.plugins.dropdown_footer.title }}',
                                    footer_class: '{{ widget.plugins.dropdown_footer.footer_class }}',
                                    create_view_label: '{{ widget.plugins.dropdown_footer.create_view_label }}',
                                    create_view_class: '{{ widget.plugins.dropdown_footer.create_view_class }}',
                                    list_view_label: '{{ widget.plugins.dropdown_footer.list_view_label }}',
                                    list_view_class: '{{ widget.plugins.dropdown_footer.list_view_class }}'
                                },
                            {% endif %} {% endcomment %}

                            {% if 'dropdown_footer' in widget.plugins.keys %}
                                dropdown_footer:{
                                    title: '{% if widget.plugins.dropdown_footer.title %}{{ widget.plugins.dropdown_footer.title }}{% else %}Select an option{% endif %}',
                                    footerClass: '{{ widget.plugins.dropdown_footer.footer_class }}',
                                    {% include "django_tomselect/render/dropdown_footer.html" with widget=widget %}
                                },
                            {% endif %}

                            {% if 'dropdown_input' in widget.plugins.keys and widget.plugins.dropdown_input %}
                                dropdown_input: true,
                            {% endif %}

                            {% if 'remove_button' in widget.plugins.keys %}
                                remove_button: {
                                    title: '{{ widget.plugins.remove_button.title }}',
                                    label: '{{ widget.plugins.remove_button.label|safe }}',
                                    className: '{{ widget.plugins.remove_button.class_name }}'
                                },
                            {% endif %}

                            virtual_scroll: true
                        },
                    {% endblock tomselect_plugins %}

                    {% if widget.value %}
                        onInitialize: function() {
                            {% for option in widget.selected_options %}
                                this.addOption({
                                    {{ widget.value_field }}: '{{ option.value }}',
                                    {{ widget.label_field }}: '{{ option.label }}',
                                    {% if "create_url" in option.keys %}create_url: '{{ option.create_url }}',{% endif %}
                                    {% if "detail_url" in option.keys %}detail_url: '{{ option.detail_url }}',{% endif %}
                                    {% if "update_url" in option.keys %}update_url: '{{ option.update_url }}',{% endif %}
                                    {% if "delete_url" in option.keys %}delete_url: '{{ option.delete_url }}',{% endif %}
                                });
                                this.addItem('{{ option.value }}');
                            {% endfor %}
                        },
                    {% endif %}

                    shouldLoad: function(query){
                        var shouldLoadValue;
                        if (this.settings.page && (!query.trim() || query === undefined)) {
                            shouldLoadValue = true;
                        } else {
                            shouldLoadValue = query.length >= {{ widget.minimum_query_length }};
                        }
                        return shouldLoadValue;
                    },

                    firstUrl: originalFirstUrl,

                    getUrl: function(query) {
                        var url = this.settings.pagination[query] || this.settings.firstUrl(query);
                        return url;
                    },

                    load: function(query, callback) {
                        var url = this.getUrl(query);
                        if (window[resetVarName] === true) {
                            url = originalFirstUrl(query);
                        }

                        fetch(url)
                            .then(response => response.json())
                            .then(json => {
                                if (json.has_more) {
                                    url = url.replace(/&p=\d+/g, '');
                                    {% if "dependent_field" in widget.keys or "exclude_field" in widget.keys %}
                                        if (window[resetVarName] === false) {
                                            this.setNextUrl(query, url + '&p=' + (json.page + 1));
                                        } else {
                                            window[resetVarName] = false;
                                            this.setNextUrl(query, url + '&p=1');
                                        }
                                    {% else %}
                                        this.setNextUrl(query, url + '&p=' + (json.page + 1));
                                    {% endif %}
                                }

                                const _scrollToOption = this.scrollToOption;
                                this.scrollToOption = () => {};
                                callback(json.results);
                                this.scrollToOption = _scrollToOption;
                            }).catch(() => {
                                console.log('%c Error loading data for {{ widget.name }}, url=', "color:red;", url);
                                callback();
                            })
                    },

                    {% block tomselect_render %}
                        render: {
                            {% with widget.attrs as attrs %}
                                {% if 'data_custom_rendering' in attrs.keys and attrs.data_custom_rendering|default:False %}
                                    option: function(data, escape) {
                                        return new Function('data', 'escape', 'return `' + {{ attrs.data_template_option|safe }} + '`')(data, escape);
                                    },
                                    item: function(data, escape) {
                                        return new Function('data', 'escape', 'return `' + {{ attrs.data_template_item|safe }} + '`')(data, escape);
                                    },
                                {% elif 'render' in attrs.keys %}
                                    {% if attrs.render.option|default:False %}
                                        option: function(data, escape) {
                                            {{ attrs.render.option|safe }}
                                        },
                                    {% endif %}
                                    {% if attrs.render.item|default:False %}
                                        item: function(data, escape) {
                                            {{ attrs.render.item|safe }}
                                        },
                                    {% endif %}
                                {% else %}
                                    {% include "django_tomselect/render/item.html" with widget=widget %}
                                    {% include "django_tomselect/render/option.html" with widget=widget %}
                                {% endif %}
                            {% endwith %}

                            {% include "django_tomselect/render/loading.html" with widget=widget %}
                            {% include "django_tomselect/render/loading_more.html" with widget=widget %}
                            {% include "django_tomselect/render/no_more_results.html" with widget=widget %}
                            {% include "django_tomselect/render/no_results.html" with widget=widget %}
                            {% include "django_tomselect/render/not_loading.html" with widget=widget %}
                            {% if 'create' in widget.keys and widget.create %}
                                {% include "django_tomselect/render/option_create.html" with widget=widget %}
                            {% endif %}
                        }
                    {% endblock tomselect_render %}

                };
            {% endblock tomselect_config %}

            {% if 'render' in widget.attrs.keys and widget.attrs.render %}
                element.addEventListener('option_add', function() {
                    // Ensure all selected data is preserved
                    this.items.forEach(item => {
                        this.options[item].selected = true;
                    });
                });

                element.addEventListener('load', function(data) {
                    // Ensure all loaded data is preserved
                    data.forEach(item => {
                        this.options[item.id] = item;
                    });
                });
            {% endif %}

            // Dependent/exclude field change handling
            var change_handler = function(value) {
                const tomSelect = element.tomselect;
                if (!tomSelect) return;

                tomSelect.clear();
                tomSelect.clearOptions();
                tomSelect.clearCache();
                tomSelect.settings.pagination = {};

                if (tomSelect.dropdown_content) {
                    tomSelect.dropdown_content.scrollTop = 0;
                }

                tomSelect.settings.firstUrl = originalFirstUrl;
                tomSelect.settings.setNextUrl = originalFirstUrl;
                tomSelect.clearPagination();
                tomSelect.load('', logCallback);

                window[resetVarName] = true;
            };

            // Mark the select as a TomSelect widget
            element.setAttribute('data-tomselect', 'true');

            {% if not widget.use_htmx %}
                document.addEventListener('DOMContentLoaded', () => {
                    window.djangoTomSelect.initialize(element, config);
                });
            {% else %}
                window.djangoTomSelect.initialize(element, config);
            {% endif %}
        })();
    {% endblock tomselect_init %}

    {% block tomselect_extra_js %}{% endblock tomselect_extra_js %}
</script>