{{-- Part E §1 — Earned Value Analysis (SPI/CPI remarks follow Result value; extended metrics by report type) --}}
@push('stylesheets')
<style>
    .report-e1-eva__toolbar { display: flex; justify-content: flex-end; align-items: center; gap: 0.5rem; margin-bottom: 0.75rem; flex-wrap: wrap; }
    .report-eva-calc-modal .modal-body { max-height: calc(100vh - 12rem); overflow-y: auto; }
    .report-eva-calc-modal .report-eva-calc-hint { font-size: 0.8125rem; }
    .report-e1-row--negative .report-e1-result-input,
    .report-e1-row--negative .report-e1-legend-cell,
    .report-e1-row--negative .report-e1-legend-cell .report-e1-conditional-remark,
    .report-e1-row--negative .report-e1-legend-cell p {
        color: #c00000 !important;
    }
</style>
@endpush
@php
    use App\Models\ReportSubSectorChecklistItem;
    use App\Support\MecReportType;

    $e1Base = 'report.part_e.earned_value_analysis.rows';
    $evaReportType = (string) ($reportType ?? request()->query('report_type', ''));
    $itemsAll = isset($subSectorChecklistItemsEarnedValueAnalysis)
        ? collect($subSectorChecklistItemsEarnedValueAnalysis)
        : collect();
    $items = ReportSubSectorChecklistItem::filterEarnedValueAnalysisItems($itemsAll, $evaReportType);
    $isPmrEva = MecReportType::isPmr($evaReportType);

    $rowsOld = report_wizard_rows('part_e.earned_value_analysis.rows', [], $reportPayload ?? null);
    $evaRowsByItemId = [];
    if (is_array($rowsOld)) {
        foreach ($rowsOld as $savedRow) {
            if (! is_array($savedRow)) {
                continue;
            }
            $itemId = (int) ($savedRow['report_sub_sector_checklist_item_id'] ?? 0);
            if ($itemId > 0) {
                $evaRowsByItemId[$itemId] = $savedRow;
            }
        }
    }

    $evaParseResult = static function (?string $s): ?float {
        if ($s === null || trim((string) $s) === '') {
            return null;
        }
        $t = str_replace([' ', ','], ['', '.'], trim((string) $s));
        if ($t === '' || ! is_numeric($t)) {
            return null;
        }

        return (float) $t;
    };

    $evaSpiRemarkHtml = static function (?float $n): string {
        if ($n === null) {
            return '<span class="text-muted">Enter a numeric result to show the matching remark.</span>';
        }
        if (abs($n - 1.0) < 1e-6) {
            return '<p class="mb-0">The Scheme is exactly on schedule.</p>';
        }
        if ($n > 1.0) {
            return '<p class="mb-0">The Scheme is ahead of schedule, completing more work than planned.</p>';
        }

        return '<p class="mb-0">The Scheme is behind schedule, completing less work than planned.</p>';
    };

    $evaCpiRemarkHtml = static function (?float $n): string {
        if ($n === null) {
            return '<span class="text-muted">Enter a numeric result to show the matching remark.</span>';
        }
        if ($n > 1.0) {
            return '<p class="mb-0">The Scheme is under budget and performing efficiently.</p>';
        }
        if (abs($n - 1.0) < 1e-6) {
            return '<p class="mb-0">The Scheme is exactly on budget.</p>';
        }

        return '<p class="mb-0">The Scheme is over budget, spending more than planned.</p>';
    };

    $evaFixedRemark = static function (int $ord): string {
        return match ($ord) {
            1 => 'Budgeted Cost of Work Scheduled',
            2 => 'Budgeted Cost of Work Performed',
            3 => 'Actual cost of work performed (same unit as PV/EV)',
            6 => 'Positive = underrun, negative = overrun',
            7 => 'Positive = ahead of schedule, negative = behind',
            8 => 'Forecast total cost at project completion',
            9 => 'Performance needed to meet original BAC',
            10 => 'Performance needed to meet forecasted EAC',
            default => '',
        };
    };

    $reportEvaCalcJsI18n = [
        'errBac' => __('Enter a valid project cost (BAC) greater than zero.'),
        'errPhys' => __('Enter physical progress between 0 and 100%.'),
        'errDuration' => __('Enter total planned duration in months (greater than zero).'),
        'errStart' => __('Select the project start date.'),
        'errAc' => __('Enter actual cost (ACWP) as zero or greater.'),
        'errEtcNew' => __('Revised ETC is required when EAC Method 4 is selected.'),
        'errInvalidDates' => __('Invalid date(s).'),
        'errAssessBeforeStart' => __('Assessment date cannot be earlier than the start date.'),
        'checkInputs' => __('Check inputs'),
        'swalSuccessTitle' => __('EVA updated'),
        'swalSuccessText' => $isPmrEva
            ? __('Earned value metrics (including variances, EAC, and TCPI) were filled from the calculator.')
            : __('Earned value metrics, EAC, and TCPI were filled from the calculator.'),
    ];
@endphp

<div class="report-e1-eva" id="report-e1-root" data-eva-pmr="{{ $isPmrEva ? '1' : '0' }}">
    <div class="report-b1-shell report-qc-shell">
        <div class="report-b1-card-body report-qc-card-body">
            @if ($items->isEmpty())
                <p class="text-muted small mb-0">Earned Value Analysis catalog is empty. Run <code class="small">php artisan migrate</code> (or seed <code class="small">ReportSubSectorChecklistSeeder</code>).</p>
            @else
                <div class="report-e1-eva__toolbar">
                    <button type="button" class="btn btn-sm btn-outline-primary" id="report-eva-open-modal" data-toggle="modal" data-target="#report-eva-calculator-modal">
                        <i class="fas fa-calculator mr-1" aria-hidden="true"></i>{{ __('Calculate EVA') }}
                    </button>
                </div>
                <div class="report-b1-table-wrap report-c2-ssc-table-wrap">
                    <div class="table-responsive">
                        <table class="table report-b1-data-table report-qc-table report-c2-ssc-table mb-0">
                            <thead>
                                <tr>
                                    <th scope="col">Items</th>
                                    <th scope="col">Result</th>
                                    <th scope="col">Remarks</th>
                                </tr>
                            </thead>
                            <tbody>
                                @foreach ($items as $rIdx => $it)
                                    @php
                                        $row = $evaRowsByItemId[(int) $it->id] ?? ((is_array($rowsOld) && isset($rowsOld[$rIdx])) ? $rowsOld[$rIdx] : []);
                                        $result = old($e1Base.'.'.$rIdx.'.result', $row['result'] ?? '');
                                        $dotBase = $e1Base.'.'.$rIdx.'.';
                                        $ord = (int) $it->sort_order;
                                        $metricKey = ReportSubSectorChecklistItem::earnedValueMetricKeyForSortOrder($ord);
                                        $n = $evaParseResult((string) $result);
                                        $resultIsNeg = \App\Services\ReportPreviewPresenter::earnedValueResultIsNegative($result, $ord);
                                    @endphp
                                    <tr class="report-qc-data-row report-e1-fixed-row{{ $resultIsNeg ? ' report-e1-row--negative' : '' }}" data-sort-order="{{ $it->sort_order }}">
                                        <td class="report-b1-td align-middle">
                                            <input type="hidden" name="report[part_e][earned_value_analysis][rows][{{ $rIdx }}][report_sub_sector_checklist_item_id]" value="{{ $it->id }}">
                                            <span class="mb-0">{{ $it->name }}</span>
                                        </td>
                                        <td class="report-b1-td align-middle">
                                            <input
                                                type="number"
                                                name="report[part_e][earned_value_analysis][rows][{{ $rIdx }}][result]"
                                                value="{{ $result }}"
                                                class="form-control form-control-sm report-b1-input report-e1-result-input @error($dotBase.'result') is-invalid @enderror"
                                                aria-label="Result for {{ $it->name }}"
                                                autocomplete="off"
                                                inputmode="decimal"
                                                step="any"
                                                title="{{ __('Enter a number only.') }}"
                                                @if ($metricKey)
                                                    data-report-e1-metric="{{ $metricKey }}"
                                                @endif
                                            >
                                            @error($dotBase.'result')
                                                <span class="invalid-feedback d-block">{{ $message }}</span>
                                            @enderror
                                        </td>
                                        <td class="report-b1-td report-e1-legend-cell align-middle small">
                                            @switch($ord)
                                                @case(4)
                                                    <div class="report-e1-conditional-remark" data-report-e1-remark="spi">{!! $evaSpiRemarkHtml($n) !!}</div>
                                                    @break
                                                @case(5)
                                                    <div class="report-e1-conditional-remark" data-report-e1-remark="cpi">{!! $evaCpiRemarkHtml($n) !!}</div>
                                                    @break
                                                @default
                                                    @php $fixedRm = $evaFixedRemark($ord); @endphp
                                                    @if ($fixedRm !== '')
                                                        {{ $fixedRm }}
                                                    @else
                                                        <span class="text-muted">—</span>
                                                    @endif
                                            @endswitch
                                        </td>
                                    </tr>
                                @endforeach
                            </tbody>
                        </table>
                    </div>
                </div>
            @endif
        </div>
    </div>
</div>

@if (! $items->isEmpty())
<div class="modal fade report-eva-calc-modal" id="report-eva-calculator-modal" tabindex="-1" role="dialog" aria-labelledby="report-eva-calculator-modal-title" aria-hidden="true">
    <div class="modal-dialog modal-lg" role="document">
        <div class="modal-content">
            <div class="modal-header bg-primary">
                <h5 class="modal-title text-white" id="report-eva-calculator-modal-title">
                    <i class="fas fa-calculator mr-2" aria-hidden="true"></i>{{ __('Earned value calculator') }}
                </h5>
                <button type="button" class="close text-white" data-dismiss="modal" aria-label="{{ __('Close') }}">
                    <span aria-hidden="true">&times;</span>
                </button>
            </div>
            <div class="modal-body">
                @include('reports.partials.eva-calculator-modal-fields', ['evaCalcIdPrefix' => 'report-eva-calc'])
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-secondary" data-dismiss="modal">{{ __('Cancel') }}</button>
                <button type="button" class="btn btn-primary" id="report-eva-calc-apply">
                    <i class="fas fa-check mr-1" aria-hidden="true"></i>{{ __('Calculate') }}
                </button>
            </div>
        </div>
    </div>
</div>
@endif

@push('scripts')
@include('reports.partials.eva-compute-engine')
<script>
(function () {
    var root = document.getElementById('report-e1-root');
    if (!root) return;

    var EVA_CALC_I18N = @json($reportEvaCalcJsI18n);
    var isPmr = root.getAttribute('data-eva-pmr') === '1';

    function parseResult(val) {
        if (val == null || String(val).trim() === '') return null;
        var t = String(val).trim().replace(/\s/g, '').replace(/,/g, '.');
        if (t === '') return null;
        var n = parseFloat(t);
        return Number.isFinite(n) ? n : null;
    }

    function nearOne(n) {
        return Math.abs(n - 1.0) < 1e-6;
    }

    function spiHtml(n) {
        if (n === null) {
            return '<span class="text-muted">Enter a numeric result to show the matching remark.</span>';
        }
        if (nearOne(n)) {
            return '<p class="mb-0">The Scheme is exactly on schedule.</p>';
        }
        if (n > 1.0) {
            return '<p class="mb-0">The Scheme is ahead of schedule, completing more work than planned.</p>';
        }
        return '<p class="mb-0">The Scheme is behind schedule, completing less work than planned.</p>';
    }

    function cpiHtml(n) {
        if (n === null) {
            return '<span class="text-muted">Enter a numeric result to show the matching remark.</span>';
        }
        if (n > 1.0) {
            return '<p class="mb-0">The Scheme is under budget and performing efficiently.</p>';
        }
        if (nearOne(n)) {
            return '<p class="mb-0">The Scheme is exactly on budget.</p>';
        }
        return '<p class="mb-0">The Scheme is over budget, spending more than planned.</p>';
    }

    function applyNegativeRowStyle(input) {
        var tr = input.closest('tr');
        if (!tr) return;
        var n = parseResult(input.value);
        var ord = parseInt(tr.getAttribute('data-sort-order') || '0', 10);
        tr.classList.toggle('report-e1-row--negative', n !== null && n < 1 && ord !== 1);
    }

    function syncRemark(input) {
        var metric = input.getAttribute('data-report-e1-metric');
        var tr = input.closest('tr');
        if (!tr) return;
        if (metric === 'spi' || metric === 'cpi') {
            var cell = tr.querySelector('.report-e1-conditional-remark[data-report-e1-remark="' + metric + '"]');
            if (cell) {
                var n = parseResult(input.value);
                cell.innerHTML = metric === 'spi' ? spiHtml(n) : cpiHtml(n);
            }
        }
        applyNegativeRowStyle(input);
    }

    root.querySelectorAll('input.report-e1-result-input').forEach(function (input) {
        applyNegativeRowStyle(input);
        input.addEventListener('input', function () { syncRemark(input); });
        input.addEventListener('change', function () { syncRemark(input); });
    });

    function setMetricValue(metric, num, decimals) {
        var inp = root.querySelector('input.report-e1-result-input[data-report-e1-metric="' + metric + '"]');
        if (!inp) return;
        inp.value = (window.MecEvaEngine && window.MecEvaEngine.formatNum)
            ? window.MecEvaEngine.formatNum(num, decimals)
            : (Number.isFinite(num) ? Number(num).toFixed(decimals) : '');
        inp.dispatchEvent(new Event('input', { bubbles: true }));
        inp.dispatchEvent(new Event('change', { bubbles: true }));
    }

    function showCalcErrors(errors) {
        var msg = (errors || []).join(' ');
        if (typeof Swal !== 'undefined') {
            Swal.fire({ icon: 'warning', title: EVA_CALC_I18N.checkInputs, text: msg });
        } else {
            window.alert(msg);
        }
    }

    function syncEtcNewVisibility() {
        var eacm = document.getElementById('report-eva-calc-eacm');
        var wrap = document.getElementById('report-eva-calc-etcnew-wrap');
        if (!eacm || !wrap) return;
        wrap.style.display = String(eacm.value) === '4' ? '' : 'none';
    }

    var calcModal = document.getElementById('report-eva-calculator-modal');
    var btnApply = document.getElementById('report-eva-calc-apply');
    var eacmEl = document.getElementById('report-eva-calc-eacm');
    if (eacmEl) {
        eacmEl.addEventListener('change', syncEtcNewVisibility);
        syncEtcNewVisibility();
    }
    if (calcModal && btnApply) {
        if (window.jQuery) {
            window.jQuery(calcModal).on('shown.bs.modal', function () {
                var assess = document.getElementById('report-eva-calc-assess');
                if (assess && !String(assess.value || '').trim()) {
                    assess.value = new Date().toISOString().slice(0, 10);
                }
                syncEtcNewVisibility();
            });
        }
        btnApply.addEventListener('click', function () {
            if (!window.MecEvaEngine) {
                showCalcErrors(['Calculator engine failed to load.']);
                return;
            }
            var out = window.MecEvaEngine.compute({
                bac: document.getElementById('report-eva-calc-bac').value,
                phys: document.getElementById('report-eva-calc-physical').value,
                pd: document.getElementById('report-eva-calc-duration').value,
                ac: document.getElementById('report-eva-calc-ac').value,
                start: document.getElementById('report-eva-calc-start').value,
                assess: document.getElementById('report-eva-calc-assess').value,
                eacMethod: document.getElementById('report-eva-calc-eacm').value,
                etcNew: document.getElementById('report-eva-calc-etcnew').value
            }, EVA_CALC_I18N);
            if (!out.ok) {
                showCalcErrors(out.errors || []);
                return;
            }
            setMetricValue('pv', out.pv, 2);
            setMetricValue('ev', out.ev, 2);
            setMetricValue('ac', out.ac, 2);
            setMetricValue('spi', out.spi, 3);
            setMetricValue('cpi', out.cpi, 3);
            if (isPmr) {
                setMetricValue('cv', out.cv, 2);
                setMetricValue('sv', out.sv, 2);
            }
            setMetricValue('eac', out.eac, 2);
            setMetricValue('tcpi_bac', out.tcpiBac, 3);
            if (isPmr) {
                setMetricValue('tcpi_eac', out.tcpiEac, 3);
            }

            var spiIn = root.querySelector('input.report-e1-result-input[data-report-e1-metric="spi"]');
            var cpiIn = root.querySelector('input.report-e1-result-input[data-report-e1-metric="cpi"]');
            if (spiIn) syncRemark(spiIn);
            if (cpiIn) syncRemark(cpiIn);

            if (window.jQuery) {
                window.jQuery(calcModal).modal('hide');
            } else {
                calcModal.classList.remove('show');
                calcModal.style.display = 'none';
                document.body.classList.remove('modal-open');
                var back = document.querySelector('.modal-backdrop');
                if (back) back.parentNode.removeChild(back);
            }

            if (typeof Swal !== 'undefined') {
                Swal.fire({
                    icon: 'success',
                    title: EVA_CALC_I18N.swalSuccessTitle,
                    text: EVA_CALC_I18N.swalSuccessText,
                    timer: 2600,
                    showConfirmButton: false
                });
            }
        });
    }
})();
</script>
@endpush