(function($) {

    var ingredientSearchEngine = new Bloodhound({
        initialize: false,
        datumTokenizer: function(datum) {
            return Bloodhound.tokenizers.whitespace(datum.name);
        },
        queryTokenizer: Bloodhound.tokenizers.whitespace,
        identify: function(datum) { return datum.id; },
        sorter: function(a, b) {
            if (a.name < b.name) {
                return -1;
            } else if (b.name < a.name) {
                return 1;
            } else {
                return 0;
            }
        },
        prefetch: {
            url: '/ingredients/prefetch.json',
            cache: false
        },
        remote: {
            url: '/ingredients/search.json?query=%QUERY',
            wildcard: '%QUERY'
        }
    });

    // var tagSearchEngine = new Bloodhound({
    //     initialize: false,
    //     datumTokenizer: function(datum) {
    //         return Bloodhound.tokenizers.whitespace(datum.name);
    //     },
    //     queryTokenizer: Bloodhound.tokenizers.whitespace,
    //     identify: function(datum) { return datum.id; },
    //     sorter: function(a, b) {
    //         if (a.name < b.name) {
    //             return -1;
    //         } else if (b.name < a.name) {
    //             return 1;
    //         } else {
    //             return 0;
    //         }
    //     },
    //     prefetch: {
    //         url: '/tags/prefetch.json',
    //         cache: false
    //     },
    //     remote: {
    //         url: '/tags/search.json?query=%QUERY',
    //         wildcard: '%QUERY'
    //     }
    // });

    function reorder($container) {
        $container.find("div.nested-fields").each(function(idx, editor) {
            var $editor = $(editor);
            $editor.find('input.sort_order').val(idx + 1).trigger("changed");
        })
    }


    function initializeIngredientEditor($container, ingredientSearchEngine) {
        // $container is either an element that contains many editors, or a single editor.
        var $editors = $container.find(".ingredient-typeahead").closest(".nested-fields");

        $editors.each(function(idx, elem) {
            var $editor = $(elem);
            var $ingredientId = $editor.find("input.ingredient_id");
            var $group = $editor.find("div.typeahead-group");

            $editor.find(".ingredient-typeahead").typeahead({},
                {
                    name: 'ingredients',
                    source: ingredientSearchEngine,
                    display: function(datum) {
                        return datum.name;
                    }
                });

            if ($ingredientId.val().length) {
                $group.addClass("has-success");
            }
        });
    }

    function ingredientItemPicked($typeahead, datum) {
        var $container = $typeahead.closest(".nested-fields");
        var $ingredientId = $container.find("input.ingredient_id");
        var $group = $container.find("div.typeahead-group");

        $ingredientId.val(datum.id);
        $typeahead.typeahead('val', datum.name);
        $group.addClass("has-success");
    }

    function ingredientNameChange($typeahead, ingredientSearchEngine) {
        var $container = $typeahead.closest(".nested-fields");
        var $ingredientId = $container.find("input.ingredient_id");
        var $group = $container.find("div.typeahead-group");

        var id = $ingredientId.val();
        var value = $typeahead.typeahead('val');

        if (id && id.length) {
            var found = ingredientSearchEngine.get([id]);
            if (found && found[0] && found[0].name != value) {
                // User has chosen something custom
                $ingredientId.val('');

                $group.removeClass("has-success");
            }
        }
    }

    function addIngredient(item) {
        $("#ingredient-list").one("cocoon:before-insert", function(e, $container) {
            var $ingredientId = $container.find("input.ingredient_id");
            var $name = $container.find("input.ingredient-typeahead");
            var $quantity = $container.find("input.quantity");
            var $units = $container.find("input.units");
            var $preparation = $container.find("input.preparation");

            $name.val(item.name);
            $ingredientId.val(item.ingredient_id);
            $units.val(item.units);
            $quantity.val(item.quantity);
            $preparation.val(item.preparation);
        });

        $("#addIngredientButton").trigger("click");
    }

    function getIngredients() {
        var data = [];
        $("#ingredient-list .ingredient-editor").each(function() {
            var $container = $(this);

            var $ingredientId = $container.find("input.ingredient_id");
            var $name = $container.find("input.ingredient-typeahead.tt-input");
            var $quantity = $container.find("input.quantity");
            var $units = $container.find("input.units");
            var $preparation = $container.find("input.preparation");

            data.push({ingredient_id: $ingredientId.val(), name: $name.typeahead("val"), quantity: $quantity.val(), units: $units.val(), preparation: $preparation.val()});
        });

        return data;
    }


    $(document).on("turbolinks:load", function() {

        var $ingredientList = $("#ingredient-list");
        var $tagInput = $("select.tag_names");
        var $stepInput = $("textarea#recipe_step_text");

        if ($ingredientList.length) {
            ingredientSearchEngine.initialize(false);
        }

        if ($stepInput.length) {
            CodeMirror.fromTextArea(
                $stepInput[0],
                {
                    mode: {
                        name: 'markdown',
                        strikethrough: true
                    },
                    // config tomfoolery to enable soft tabs
                    extraKeys: {
                        Tab: function(cm) {
                            if (cm.somethingSelected()) {
                                cm.indentSelection("add");
                                return;
                            }

                            if (cm.options.indentWithTabs)
                                cm.replaceSelection("\t", "end", "+input");
                            else
                                cm.execCommand("insertSoftTab");
                        },
                        "Shift-Tab": function(cm) {
                            cm.indentSelection("subtract");
                        }
                    },
                    indentUnit: 2,
                    tabSize: 2,
                    indentWithTabs: false,
                    lineWrapping: true,
                    lineNumbers: true
                }
            );
        }

        $tagInput.tagsinput({
            trimValue: true,
            confirmKeys: [9, 13, 32, 44] // tab, enter, space, comma
        });


        initializeIngredientEditor($ingredientList, ingredientSearchEngine);

        $ingredientList
            .on("cocoon:after-insert", function(e, item) {
                reorder($ingredientList);
                initializeIngredientEditor(item, ingredientSearchEngine);
            })
            .on("cocoon:after-remove", function(e, item) {
                if (item.find(".remove-button.existing").length) {
                    item.detach().appendTo("#deleted_ingredients");
                }
                reorder($ingredientList);
            })
            .on("typeahead:change", function(evt, value) {
                ingredientNameChange($(evt.target), ingredientSearchEngine);
            })
            .on("typeahead:select", function(evt, value) {
                ingredientItemPicked($(evt.target), value);
            })
            .on("typeahead:autocomplete", function(evt, value) {
                ingredientItemPicked($(evt.target), value);
            })
            .on("click", "button.ingredient_convert_btn", function(evt) {

            });

        $('#convert_modal')
            .on('show.bs.modal', function (event) {
                var $button = $(event.relatedTarget);
                var $modal = $(this);

                var $editor = $button.closest(".ingredient-editor");

                $modal.data('ingredient-editor', $editor);

                var $quantity = $editor.find("input.quantity");
                var $units = $editor.find("input.units");
                var $ingredientId = $editor.find("input.ingredient_id");

                var $modalQuantity = $modal.find("input.quantity");
                var $modalUnits = $modal.find("input.units");
                var $modalIngredientId = $modal.find("input.ingredient_id");

                $modalQuantity.val($quantity.val());
                $modalUnits.val($units.val());
                $modalIngredientId.val($ingredientId.val());
            })
            .on("ajax:success", "form", function(evt, data, status, xhr) {
                var $modal = $("#convert_modal");
                var $editor = $modal.data('ingredient-editor');

                if (data.success) {
                    var $quantity = $editor.find("input.quantity");
                    var $units = $editor.find("input.units");

                    var $modalOutUnits = $modal.find("input.output_units");

                    $quantity.val(data.output_quantity);
                    if ($modalOutUnits.val().length) {
                        $units.val($modalOutUnits.val());
                    }

                    $modal.modal('hide');
                } else {

                }

                $("#modal_form_container").replaceWith($(data.form_html));
            });

        var $bulkIngredientsModal = $("#bulk_ingredients_modal");
        var $ingredientBulkInput =  $("#ingredient_bulk_input");
        var $ingredientBulkList = $("#ingredient_bulk_parsed_list");
        autosize($ingredientBulkInput);

        var parseBulkIngredients = function() {
            var data = $ingredientBulkInput.val();
            $ingredientBulkList.empty();

            var parsed = [];
            var x;

            var lines = data.replace("\r", "").split("\n");

            var regex = /^(?:([\d\/.]+(?:\s+[\d\/]+)?)\s+)?(?:([\w-]+)(?:\s+of)?\s+)?([^,]*)(?:,\s*(.*))?$/i;

            var magicFunc = function(str) {
                if (str == "-") {
                    return "";
                } else {
                    return str;
                }
            };

            for (x = 0; x < lines.length; x++) {
                var line = lines[x].trim();
                if (line.length == 0) { continue; }

                var barIndex = line.lastIndexOf("|");
                var afterBar = null;

                if (barIndex >= 0) {
                    afterBar = line.slice(barIndex + 1);
                    line = line.slice(0, barIndex);
                }

                var match = line.match(regex);

                if (match) {
                    item = {quantity: magicFunc(match[1]), units: magicFunc(match[2]), name: magicFunc(match[3]), preparation: magicFunc(match[4])};
                    if (afterBar) {
                        item.name = item.name + ", " + item.preparation;
                        item.preparation = afterBar;
                    }
                    parsed.push(item);
                } else {
                    parsed.push(null);
                }
            }

            $bulkIngredientsModal.data("bulkData", parsed);

            for (x = 0; x < parsed.length; x++) {
                var item = parsed[x];
                if (item != null) {
                    $ingredientBulkList.append(
                        $("<tr />")
                            .append($("<td />").addClass("quantity").text(item.quantity))
                            .append($("<td />").addClass("units").text(item.units))
                            .append($("<td />").addClass("name").text(item.name))
                            .append($("<td />").addClass("preparation").text(item.preparation))
                    );
                } else {
                    $ingredientBulkList.append(
                        $("<tr />")
                            .append($("<td />").attr("colspan", "4").text("<Cannot Parse>"))
                    );
                }
            }
        };

        $bulkIngredientsModal
            .on('show.bs.modal', function (event) {
                var data = getIngredients();
                var x;
                var text = [];

                for (x = 0; x < data.length; x++) {
                    var item = data[x];

                    text.push(
                        item.quantity + " " +
                        (item.units || "-") + " " +
                        item.name +
                        (item.preparation ? (", " + item.preparation) : "")
                    );
                }

                $ingredientBulkInput.val(text.join("\n"));

                setTimeout(function() {
                    parseBulkIngredients();
                    autosize.update($ingredientBulkInput);
                }, 250);
            });

        $ingredientBulkInput.on('keyup', function() {
            parseBulkIngredients();
        });

        $("#bulkIngredientAddSubmit").on("click", function() {
            var parsed = $bulkIngredientsModal.data("bulkData");
            var x;

            $("#ingredient-list").find(".remove-button").trigger("click");

            if (parsed && parsed.length) {
                for (x = 0; x < parsed.length; x++) {
                    var item = parsed[x];
                    if (item) {
                        addIngredient(item)
                    }
                }
            }

            $bulkIngredientsModal.modal('hide')
        });

    });


})(jQuery);