gruene-seele/resources/views/admin/inventory/stock-entries/_scripts.blade.php

<script>
    (function ($) {
        function toggleBlocks() {
            var t = $('#entry_type').val();
            var isIng = t === 'ingredient';
            $('#stock-entry-ingredient-block').toggle(isIng);
            $('#stock-entry-quality-block').toggle(isIng);
            $('#stock-entry-packaging-block').toggle(!isIng);
            $('#price-per-kg-block').toggle(isIng);
            $('#price-total-block').toggle(!isIng);
        }

        function initIngredientSelect2() {
            var $el = $('#ingredient_id');
            if ($el.data('select2')) {
                $el.select2('destroy');
            }
            $el.select2({
                theme: 'default',
                width: '100%',
                placeholder: '{{ __('Inhaltsstoff suchen…') }}',
                allowClear: true,
                ajax: {
                    url: $el.data('search-url'),
                    dataType: 'json',
                    delay: 250,
                    data: function (params) {
                        return {q: params.term || ''};
                    },
                    processResults: function (data) {
                        return {results: data.results || []};
                    },
                    cache: true
                },
                minimumInputLength: 1
            });
        }

        function initPackagingSelect2() {
            var $el = $('#packaging_item_id');
            if ($el.data('select2')) {
                $el.select2('destroy');
            }
            $el.select2({
                theme: 'default',
                width: '100%',
                placeholder: '{{ __('Verpackungsartikel suchen…') }}',
                allowClear: true,
                ajax: {
                    url: $el.data('search-url'),
                    dataType: 'json',
                    delay: 250,
                    data: function (params) {
                        return {
                            q: params.term || '',
                            entry_type: $('#entry_type').val()
                        };
                    },
                    processResults: function (data) {
                        return {results: data.results || []};
                    },
                    cache: true
                },
                minimumInputLength: 0
            });
        }

        // AP-42: aktuelle Dichte des gewählten Rohstoffs (aus dem AJAX-Ergebnis oder
        // — bei vorbelegtem Rohstoff — aus der data-density-Option).
        function currentDensity() {
            var sel = $('#ingredient_id').select2('data');
            if (sel && sel[0] && sel[0].density != null && sel[0].density !== '') {
                return parseFloat(sel[0].density);
            }
            var d = $('#ingredient_id option:selected').data('density');
            return (d != null && d !== '') ? parseFloat(d) : null;
        }

        function applyOrderedUnit() {
            var isIng = $('#entry_type').val() === 'ingredient';
            var $unit = $('#ordered_unit');
            // Einheit ist eigenes Pflichtfeld vor der Menge — nur bei Rohstoffen sichtbar
            // und nur dann required (ein verstecktes required-Feld blockiert das Absenden).
            $('#ordered-unit-wrap').toggle(isIng);
            $unit.prop('required', isIng);

            var density = isIng ? currentDensity() : null;
            var hasDensity = density != null && density > 0;
            $unit.find('option[value="ml"]').prop('disabled', !hasDensity);
            if (!hasDensity && $unit.val() === 'ml') {
                $unit.val('');
            }

            var $unitHint = $('#ordered-unit-hint');
            var $hint = $('#ordered-quantity-hint');
            var $preview = $('#ordered-quantity-preview');
            $preview.hide().text('');
            if (!isIng) {
                $hint.text('{{ __('Bei Verpackung in Stück.') }}');
                return;
            }

            if (!$('#ingredient_id').val()) {
                $unitHint.text('{{ __('Zuerst den Inhaltsstoff wählen — davon hängt ab, ob ml möglich ist.') }}');
            } else if (hasDensity) {
                $unitHint.text('{{ __('Dichte hinterlegt') }} (' + formatDensity(density) + ' g/ml) — {{ __('Erfassung in Gramm oder Milliliter möglich.') }}');
            } else {
                $unitHint.text('{{ __('Keine Dichte am Rohstoff hinterlegt — nur Gramm möglich. Für ml zuerst die Dichte pflegen.') }}');
            }

            var unit = $unit.val();
            if (unit === 'ml' && hasDensity) {
                $hint.text('{{ __('Erfassung in ml — der Bestand wird über die Dichte in Gramm gebucht.') }}');
                var ml = parseNumber($('#ordered_quantity').val());
                if (ml != null && ml > 0) {
                    // AP-42: Live-Vorschau der ml→g-Umrechnung direkt am Mengenfeld.
                    $preview.text(formatQuantity(ml) + ' ml × ' + formatDensity(density) + ' g/ml = ' + formatQuantity(ml * density) + ' g').show();
                }
            } else if (unit === 'gram') {
                $hint.text('{{ __('Erfassung in Gramm.') }}');
            } else {
                $hint.text('{{ __('Bitte zuerst oben die Einheit wählen.') }}');
            }
        }

        function parseNumber(value) {
            if (value === null || value === undefined) {
                return null;
            }
            // AP-53: gleiche Regel wie reFormatWawiNumber — Punkt mit 1–2 Stellen oder "0.xxx" = Komma.
            var raw = String(value).trim();
            var normalized = /^-?(\d+\.\d{1,2}|0\.\d{3})$/.test(raw) ? raw : raw.replace(/\./g, '').replace(',', '.');
            if (normalized === '' || isNaN(normalized)) {
                return null;
            }
            return parseFloat(normalized);
        }

        // Prüfung AP-53 (4.3): Mengen (3 Stellen), Preise (2 Stellen) und Dichte (4 Stellen) getrennt formatieren.
        function formatQuantity(value) {
            return Number(value).toLocaleString('de-DE', {minimumFractionDigits: 2, maximumFractionDigits: 3, useGrouping: false});
        }

        function formatPrice(value) {
            return Number(value).toFixed(2).replace('.', ',');
        }

        function formatDensity(value) {
            return Number(value).toLocaleString('de-DE', {minimumFractionDigits: 2, maximumFractionDigits: 4, useGrouping: false});
        }

        function currentFactor() {
            var percent = parseFloat($('#tax_rate_id option:selected').data('percent')) || 0;
            return 1 + percent / 100;
        }

        function recalcFromNet() {
            var net = parseNumber($('#price_per_kg').val());
            if (net === null) {
                return;
            }
            $('#price_per_kg_gross').val(formatPrice(net * currentFactor()));
        }

        function recalcFromGross() {
            var gross = parseNumber($('#price_per_kg_gross').val());
            if (gross === null) {
                return;
            }
            var factor = currentFactor();
            $('#price_per_kg').val(formatPrice(factor > 0 ? gross / factor : gross));
        }

        $(document).ready(function () {
            toggleBlocks();
            initIngredientSelect2();
            initPackagingSelect2();
            applyOrderedUnit();

            $('#entry_type').on('change', function () {
                toggleBlocks();
                applyOrderedUnit();
                $('#packaging_item_id').val(null).trigger('change');
                initPackagingSelect2();
            });
            $('#ingredient_id').on('change', applyOrderedUnit);
            $('#ordered_unit').on('change', applyOrderedUnit);
            $('#ordered_quantity').on('input', applyOrderedUnit);

            $('#price_per_kg').on('input', recalcFromNet);
            $('#price_per_kg_gross').on('input', recalcFromGross);
            $('#tax_rate_id').on('change', function () {
                if (parseNumber($('#price_per_kg').val()) !== null) {
                    recalcFromNet();
                } else {
                    recalcFromGross();
                }
            });
        });
    })(jQuery);
</script>