@model Rs_system.Models.ViewModels.RegistroCultoViewModel
@{
    ViewData["Title"] = "Editar Registro de Ofrendas";
}

<div class="d-flex justify-content-between align-items-center mb-4">
    <div>
        <h4 class="mb-1">Editar Registro de Ofrendas</h4>
        <p class="text-muted mb-0">Modificar registro del @Model.Fecha.ToString("dd/MM/yyyy")</p>
    </div>
    <a asp-action="Index" class="btn btn-outline-secondary">
        <i class="bi bi-arrow-left me-1"></i> Volver
    </a>
</div>

<form asp-action="Edit" method="post" id="ofrendaForm">
    <input type="hidden" asp-for="Id" />
    <div asp-validation-summary="ModelOnly" class="alert alert-danger"></div>

    <div class="row">
        <!-- Left Column: Basic Info -->
        <div class="col-lg-4">
            <div class="card-custom">
                <h6 class="mb-3"><i class="bi bi-calendar-event me-2"></i>Información del Culto</h6>
                
                <div class="mb-3">
                    <label asp-for="Fecha" class="form-label"></label>
                    <input asp-for="Fecha" class="form-control" type="date" />
                    <span asp-validation-for="Fecha" class="text-danger"></span>
                </div>
                
                <div class="mb-3">
                    <label asp-for="Observaciones" class="form-label"></label>
                    <textarea asp-for="Observaciones" class="form-control" rows="3" placeholder="Notas adicionales..."></textarea>
                    <span asp-validation-for="Observaciones" class="text-danger"></span>
                </div>
            </div>

            <!-- Summary -->
            <div class="card-custom mt-3">
                <h6 class="mb-3"><i class="bi bi-calculator me-2"></i>Resumen</h6>
                <div class="d-flex justify-content-between mb-2">
                    <span>Total Ofrendas:</span>
                    <strong id="totalOfrendas">$ 0.00</strong>
                </div>
                <div class="d-flex justify-content-between mb-2">
                    <span>Total Descuentos:</span>
                    <strong id="totalDescuentos" class="text-warning">$ 0.00</strong>
                </div>
                <hr>
                <div class="d-flex justify-content-between">
                    <span class="fw-bold">Monto Neto:</span>
                    <strong id="montoNeto" class="text-success fs-5">$ 0.00</strong>
                </div>
            </div>
        </div>

        <!-- Right Column: Offerings -->
        <div class="col-lg-8">
            <div class="card-custom">
                <div class="d-flex justify-content-between align-items-center mb-3">
                    <h6 class="mb-0"><i class="bi bi-cash-stack me-2"></i>Ofrendas</h6>
                    <button type="button" class="btn btn-sm btn-primary-custom" onclick="addOfrenda()">
                        <i class="bi bi-plus-lg me-1"></i> Agregar Ofrenda
                    </button>
                </div>
                
                <div id="ofrendasContainer">
                    <!-- Existing offerings will be loaded here -->
                </div>
                
                <div id="emptyState" class="text-center text-muted py-4" style="display: none;">
                    <i class="bi bi-plus-circle fs-1 d-block mb-2"></i>
                    Haga clic en "Agregar Ofrenda" para comenzar
                </div>
            </div>
        </div>
    </div>

    <div class="mt-4 text-end">
        <a asp-action="Index" class="btn btn-outline-secondary me-2">Cancelar</a>
        <button type="submit" class="btn btn-primary-custom">
            <i class="bi bi-check-lg me-1"></i> Guardar Cambios
        </button>
    </div>
</form>

<!-- Ofrenda Template -->
<template id="ofrendaTemplate">
    <div class="ofrenda-item card mb-3" data-index="0">
        <div class="card-header bg-light d-flex justify-content-between align-items-center py-2">
            <span class="fw-semibold">Ofrenda #<span class="ofrenda-number">1</span></span>
            <button type="button" class="btn btn-sm btn-outline-danger" onclick="removeOfrenda(this)">
                <i class="bi bi-trash"></i>
            </button>
        </div>
        <div class="card-body">
            <div class="row mb-3">
                <div class="col-md-6">
                    <label class="form-label">Concepto *</label>
                    <input type="text" name="Ofrendas[0].Concepto" class="form-control ofrenda-concepto" placeholder="Ej: Ofrenda general" required />
                </div>
                <div class="col-md-6">
                    <label class="form-label">Monto *</label>
                    <div class="input-group">
                        <span class="input-group-text">$</span>
                        <input type="number" step="0.01" min="0.01" name="Ofrendas[0].Monto" class="form-control ofrenda-monto" placeholder="0.00" required onchange="calculateTotals()" />
                    </div>
                </div>
            </div>
            
            <div class="descuentos-section">
                <div class="d-flex justify-content-between align-items-center mb-2">
                    <small class="text-muted"><i class="bi bi-dash-circle me-1"></i>Descuentos</small>
                    <button type="button" class="btn btn-sm btn-outline-warning" onclick="addDescuento(this)">
                        <i class="bi bi-plus"></i> Agregar Descuento
                    </button>
                </div>
                <div class="descuentos-container">
                    <!-- Descuentos will be added here -->
                </div>
            </div>
            
            <div class="mt-3 pt-2 border-top d-flex justify-content-end">
                <span class="text-muted me-2">Neto:</span>
                <strong class="ofrenda-neto text-success">$ 0.00</strong>
            </div>
        </div>
    </div>
</template>

<!-- Descuento Template -->
<template id="descuentoTemplate">
    <div class="descuento-item row g-2 mb-2">
        <div class="col-md-5">
            <input type="text" name="Ofrendas[0].Descuentos[0].Concepto" class="form-control form-control-sm descuento-concepto" placeholder="Concepto descuento" required />
        </div>
        <div class="col-md-5">
            <div class="input-group input-group-sm">
                <span class="input-group-text">$</span>
                <input type="number" step="0.01" min="0.01" name="Ofrendas[0].Descuentos[0].Monto" class="form-control descuento-monto" placeholder="0.00" required onchange="calculateTotals()" />
            </div>
        </div>
        <div class="col-md-2">
            <button type="button" class="btn btn-sm btn-outline-danger w-100" onclick="removeDescuento(this)">
                <i class="bi bi-x"></i>
            </button>
        </div>
    </div>
</template>

@section Scripts {
    <script>
        let ofrendaIndex = 0;
        
        // Existing data from model
        const existingData = @Html.Raw(System.Text.Json.JsonSerializer.Serialize(Model.Ofrendas));

        function addOfrenda(concepto = '', monto = 0, descuentos = []) {
            const container = document.getElementById('ofrendasContainer');
            const template = document.getElementById('ofrendaTemplate');
            const clone = template.content.cloneNode(true);
            
            // Update indices
            const ofrendaItem = clone.querySelector('.ofrenda-item');
            ofrendaItem.dataset.index = ofrendaIndex;
            ofrendaItem.querySelector('.ofrenda-number').textContent = ofrendaIndex + 1;
            
            // Update input names and values
            clone.querySelectorAll('[name]').forEach(input => {
                input.name = input.name.replace('[0]', `[${ofrendaIndex}]`);
            });
            
            // Set values
            clone.querySelector('.ofrenda-concepto').value = concepto;
            clone.querySelector('.ofrenda-monto').value = monto || '';
            
            container.appendChild(clone);
            
            // Add existing descuentos
            const addedItem = container.lastElementChild;
            descuentos.forEach(d => {
                addDescuentoToItem(addedItem, d.concepto, d.monto);
            });
            
            document.getElementById('emptyState').style.display = 'none';
            ofrendaIndex++;
            calculateTotals();
        }

        function removeOfrenda(btn) {
            btn.closest('.ofrenda-item').remove();
            updateOfrendaIndices();
            calculateTotals();
            
            if (document.querySelectorAll('.ofrenda-item').length === 0) {
                document.getElementById('emptyState').style.display = 'block';
            }
        }

        function addDescuento(btn) {
            addDescuentoToItem(btn.closest('.ofrenda-item'));
        }
        
        function addDescuentoToItem(ofrendaItem, concepto = '', monto = 0) {
            const ofrendaIdx = ofrendaItem.dataset.index;
            const container = ofrendaItem.querySelector('.descuentos-container');
            const descuentoIdx = container.querySelectorAll('.descuento-item').length;
            
            const template = document.getElementById('descuentoTemplate');
            const clone = template.content.cloneNode(true);
            
            // Update input names
            clone.querySelectorAll('[name]').forEach(input => {
                input.name = input.name.replace('Ofrendas[0]', `Ofrendas[${ofrendaIdx}]`);
                input.name = input.name.replace('Descuentos[0]', `Descuentos[${descuentoIdx}]`);
            });
            
            // Set values
            clone.querySelector('.descuento-concepto').value = concepto;
            clone.querySelector('.descuento-monto').value = monto || '';
            
            container.appendChild(clone);
            calculateTotals();
        }

        function removeDescuento(btn) {
            btn.closest('.descuento-item').remove();
            updateDescuentoIndices();
            calculateTotals();
        }

        function updateOfrendaIndices() {
            document.querySelectorAll('.ofrenda-item').forEach((item, idx) => {
                item.dataset.index = idx;
                item.querySelector('.ofrenda-number').textContent = idx + 1;
                
                item.querySelectorAll('[name^="Ofrendas["]').forEach(input => {
                    input.name = input.name.replace(/Ofrendas\[\d+\]/, `Ofrendas[${idx}]`);
                });
            });
            ofrendaIndex = document.querySelectorAll('.ofrenda-item').length;
        }

        function updateDescuentoIndices() {
            document.querySelectorAll('.ofrenda-item').forEach((ofrendaItem) => {
                ofrendaItem.querySelectorAll('.descuento-item').forEach((descItem, descIdx) => {
                    descItem.querySelectorAll('[name*="Descuentos["]').forEach(input => {
                        input.name = input.name.replace(/Descuentos\[\d+\]/, `Descuentos[${descIdx}]`);
                    });
                });
            });
        }

        function calculateTotals() {
            let totalOfrendas = 0;
            let totalDescuentos = 0;

            document.querySelectorAll('.ofrenda-item').forEach(item => {
                const monto = parseFloat(item.querySelector('.ofrenda-monto').value) || 0;
                let descuentosSum = 0;
                
                item.querySelectorAll('.descuento-monto').forEach(descInput => {
                    descuentosSum += parseFloat(descInput.value) || 0;
                });
                
                const neto = monto - descuentosSum;
                item.querySelector('.ofrenda-neto').textContent = `$ ${neto.toFixed(2)}`;
                
                totalOfrendas += monto;
                totalDescuentos += descuentosSum;
            });

            document.getElementById('totalOfrendas').textContent = `$ ${totalOfrendas.toFixed(2)}`;
            document.getElementById('totalDescuentos').textContent = `$ ${totalDescuentos.toFixed(2)}`;
            document.getElementById('montoNeto').textContent = `$ ${(totalOfrendas - totalDescuentos).toFixed(2)}`;
        }

        // Load existing data on page load
        document.addEventListener('DOMContentLoaded', function() {
            if (existingData && existingData.length > 0) {
                existingData.forEach(ofrenda => {
                    addOfrenda(
                        ofrenda.concepto,
                        ofrenda.monto,
                        ofrenda.descuentos.map(d => ({ concepto: d.concepto, monto: d.monto }))
                    );
                });
            } else {
                addOfrenda();
            }
        });
    </script>
}