/**
 * Shared list DataTable behavior (aligned with batch_list.php):
 * - Temporarily neutralize scroll defaults during init
 * - Force scrollX/Y/Collapse off, autoWidth/responsive false
 * - Sync horizontal scroll between scrollHead and scrollBody when present
 * - columns.adjust on draw, resize, and after first paint
 */
(function (window, $) {
    "use strict";
    if (typeof $ === "undefined" || !$ || !$.fn || !$.fn.DataTable) {
        return;
    }

    var _savedDefaults = null;

    window.nhanceListDataTableBeforeInit = function () {
        _savedDefaults = {
            scrollX: $.fn.dataTable.defaults.scrollX,
            scrollY: $.fn.dataTable.defaults.scrollY,
            scrollCollapse: $.fn.dataTable.defaults.scrollCollapse,
            bScrollCollapse: $.fn.dataTable.defaults.bScrollCollapse,
            sScrollX: $.fn.dataTable.defaults.sScrollX,
            sScrollY: $.fn.dataTable.defaults.sScrollY,
            sScrollXInner: $.fn.dataTable.defaults.sScrollXInner,
        };
        $.extend($.fn.dataTable.defaults, {
            scrollX: false,
            scrollY: false,
            scrollCollapse: false,
            bScrollCollapse: false,
            sScrollX: "",
            sScrollY: "",
            sScrollXInner: "",
        });
    };

    window.nhanceListDataTableAfterInit = function () {
        if (_savedDefaults) {
            $.extend($.fn.dataTable.defaults, _savedDefaults);
            _savedDefaults = null;
        }
    };

    window.nhanceListDataTableBaseInitComplete = function () {
        return function () {
            var api = this.api();
            var $wrap = $(api.table().container());
            var $body = $wrap.find(".dataTables_scrollBody");
            var $head = $wrap.find(".dataTables_scrollHead");
            if ($body.length && $head.length) {
                $body.off("scroll.nhanceListHScroll").on("scroll.nhanceListHScroll", function () {
                    $head.scrollLeft($(this).scrollLeft());
                });
                $head.off("scroll.nhanceListHScroll").on("scroll.nhanceListHScroll", function () {
                    $body.scrollLeft($(this).scrollLeft());
                });
            }
        };
    };

    /**
     * Merge page-specific DataTable options with batch_list-style list defaults.
     * User initComplete runs after base scroll sync.
     */
    window.nhanceMergeListDataTableOptions = function (userOptions) {
        userOptions = userOptions || {};
        var userInit = userOptions.initComplete;
        var merged = $.extend(true, {}, userOptions);
        /* DataTables maps these to oScroll *before* pb()/tb() runs. CamelCase alone is not enough if
           sScrollX/sScrollY were set via defaults, Hungarian options, or truthy strings. */
        merged.scrollX = false;
        merged.scrollY = false;
        merged.scrollCollapse = false;
        merged.sScrollX = "";
        merged.sScrollY = "";
        merged.sScrollXInner = "";
        merged.bScrollCollapse = false;
        merged.autoWidth = false;
        merged.responsive = false;
        if (merged.paging === undefined) {
            merged.paging = true;
        }
        var baseInit = window.nhanceListDataTableBaseInitComplete();
        merged.initComplete = function () {
            baseInit.call(this);
            if (typeof userInit === "function") {
                userInit.call(this);
            }
        };
        return merged;
    };

    window.nhanceListDataTableBindAdjust = function (dtApi) {
        if (!dtApi || !dtApi.on) {
            return;
        }
        var tid = $(dtApi.table().node()).attr("id") || "nhance_dt";
        var resizeNs = "resize.nhanceListDt_" + tid;

        dtApi.columns.adjust();
        dtApi.on("draw.dt", function () {
            dtApi.columns.adjust();
        });
        $(window).off(resizeNs).on(resizeNs, function () {
            dtApi.columns.adjust();
        });
        setTimeout(function () {
            dtApi.columns.adjust();
        }, 0);
    };
})(window, jQuery);