package views

import (
	"fmt"
	"whereismymoney/internal/models"
)

templ RecurringTransactions(userName string, rules []models.RecurrenceRule) {
	@Layout("Wiederkehrende Transaktionen - WhereIsMyMoney") {
		@Navigation(userName)
		
		<!-- Main Content -->
		<div class="min-h-screen bg-gray-50">
			<div class="max-w-7xl mx-auto py-6 sm:px-6 lg:px-8">
				<div class="px-4 py-6 sm:px-0">
					<!-- Header -->
					<div class="mb-8">
						<h1 class="text-3xl font-bold text-gray-900">Wiederkehrende Transaktionen</h1>
						<p class="mt-2 text-gray-600">Verwalten Sie Ihre regelmäßigen Ein- und Ausgaben</p>
					</div>

					<!-- Regeln Liste -->
					<div class="bg-white rounded-lg shadow">
						<div class="px-6 py-4 border-b border-gray-200">
							<h3 class="text-lg font-medium text-gray-900">Ihre wiederkehrenden Transaktionen</h3>
						</div>
						
						if len(rules) == 0 {
							<div class="px-6 py-8 text-center">
								<p class="text-gray-500">Noch keine wiederkehrenden Transaktionen vorhanden.</p>
							</div>
						} else {
							<div class="divide-y divide-gray-200">
								for _, rule := range rules {
									<div class="px-6 py-4" data-rule-id={ fmt.Sprintf("%d", rule.ID) }>
										<div class="flex justify-between items-start">
											<div class="flex-1">
												<div class="flex items-center space-x-3">
													<h4 class="text-lg font-medium text-gray-900">{ rule.Description }</h4>
													if rule.IsActive {
														<span class="inline-flex items-center px-2.5 py-0.5 rounded-full text-xs font-medium bg-green-100 text-green-800">
															Aktiv
														</span>
													} else {
														<span class="inline-flex items-center px-2.5 py-0.5 rounded-full text-xs font-medium bg-red-100 text-red-800">
															Inaktiv
														</span>
													}
												</div>
												
												<div class="mt-2 flex items-center space-x-6 text-sm text-gray-500">
													<div class="flex items-center">
														<span class="font-medium">Betrag:</span>
														if rule.Type == "income" {
															<span class="ml-1 text-green-600 font-semibold">+€{ fmt.Sprintf("%.2f", rule.Amount) }</span>
														} else {
															<span class="ml-1 text-red-600 font-semibold">-€{ fmt.Sprintf("%.2f", rule.Amount) }</span>
														}
													</div>
													
													<div class="flex items-center">
														<span class="font-medium">Intervall:</span>
														<span class="ml-1">
															switch rule.Interval {
																case "daily":
																	if rule.IntervalCount == 1 {
																		Täglich
																	} else {
																		Alle { fmt.Sprintf("%d", rule.IntervalCount) } Tage
																	}
																case "weekly":
																	if rule.IntervalCount == 1 {
																		Wöchentlich
																	} else {
																		Alle { fmt.Sprintf("%d", rule.IntervalCount) } Wochen
																	}
																case "monthly":
																	if rule.IntervalCount == 1 {
																		Monatlich
																	} else {
																		Alle { fmt.Sprintf("%d", rule.IntervalCount) } Monate
																	}
																case "yearly":
																	if rule.IntervalCount == 1 {
																		Jährlich
																	} else {
																		Alle { fmt.Sprintf("%d", rule.IntervalCount) } Jahre
																	}
																default:
																	{ rule.Interval }
															}
														</span>
													</div>
													
													if rule.Category != nil {
														<div class="flex items-center">
															<span class="font-medium">Kategorie:</span>
															<span class="ml-1">{ rule.Category.Name }</span>
														</div>
													}
													
													<div class="flex items-center">
														<span class="font-medium">Start:</span>
														<span class="ml-1">{ rule.StartDate.Format("02.01.2006") }</span>
													</div>
													
													if rule.EndDate != nil {
														<div class="flex items-center">
															<span class="font-medium">Ende:</span>
															<span class="ml-1">{ rule.EndDate.Format("02.01.2006") }</span>
														</div>
													}
												</div>
											</div>
											
											<div class="flex items-center space-x-2 ml-4">
												<button 
													class="edit-rule-btn inline-flex items-center px-3 py-1 border border-gray-300 shadow-sm text-sm font-medium rounded-md text-gray-700 bg-white hover:bg-gray-50 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-indigo-500"
													data-rule-id={ fmt.Sprintf("%d", rule.ID) }
													data-description={ rule.Description }
													data-amount={ fmt.Sprintf("%.2f", rule.Amount) }
													data-type={ rule.Type }
													data-interval={ rule.Interval }
													data-start-date={ rule.StartDate.Format("2006-01-02") }
													if rule.EndDate != nil {
														data-end-date={ rule.EndDate.Format("2006-01-02") }
													}
												>
													Bearbeiten
												</button>
												
												<button 
													class="toggle-rule-btn inline-flex items-center px-3 py-1 border border-gray-300 shadow-sm text-sm font-medium rounded-md text-gray-700 bg-white hover:bg-gray-50 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-indigo-500"
													data-rule-id={ fmt.Sprintf("%d", rule.ID) }
													data-active={ fmt.Sprintf("%t", rule.IsActive) }
												>
													if rule.IsActive {
														Deaktivieren
													} else {
														Aktivieren
													}
												</button>
												
												<button 
													class="delete-rule-btn inline-flex items-center px-3 py-1 border border-red-300 shadow-sm text-sm font-medium rounded-md text-red-700 bg-white hover:bg-red-50 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-red-500"
													data-rule-id={ fmt.Sprintf("%d", rule.ID) }
												>
													Löschen
												</button>
											</div>
										</div>
									</div>
								}
							</div>
						}
					</div>

					<!-- Edit Modal (wird per JavaScript eingeblendet) -->
					<div id="editModal" class="fixed inset-0 bg-gray-600 bg-opacity-50 overflow-y-auto h-full w-full hidden">
						<div class="relative top-20 mx-auto p-5 border w-96 shadow-lg rounded-md bg-white">
							<div class="mt-3">
								<h3 class="text-lg font-medium text-gray-900 mb-4">Wiederkehrende Transaktion bearbeiten</h3>
								
								<form id="editForm">
									<div class="space-y-4">
										<div>
											<label class="block text-sm font-medium text-gray-700">Beschreibung</label>
											<input type="text" id="editDescription" class="mt-1 block w-full border-gray-300 rounded-md shadow-sm focus:ring-indigo-500 focus:border-indigo-500">
										</div>
										
										<div>
											<label class="block text-sm font-medium text-gray-700">Betrag (€)</label>
											<input type="number" step="0.01" id="editAmount" class="mt-1 block w-full border-gray-300 rounded-md shadow-sm focus:ring-indigo-500 focus:border-indigo-500">
										</div>
										
										<div>
											<label class="block text-sm font-medium text-gray-700">Typ</label>
											<select id="editType" class="mt-1 block w-full border-gray-300 rounded-md shadow-sm focus:ring-indigo-500 focus:border-indigo-500">
												<option value="income">Einnahme</option>
												<option value="expense">Ausgabe</option>
											</select>
										</div>
										
										<div>
											<label class="block text-sm font-medium text-gray-700">Intervall</label>
											<select id="editInterval" class="mt-1 block w-full border-gray-300 rounded-md shadow-sm focus:ring-indigo-500 focus:border-indigo-500">
												<option value="daily">Täglich</option>
												<option value="weekly">Wöchentlich</option>
												<option value="monthly">Monatlich</option>
												<option value="yearly">Jährlich</option>
											</select>
										</div>
										
										<div>
											<label class="block text-sm font-medium text-gray-700">Startdatum</label>
											<input type="date" id="editStartDate" class="mt-1 block w-full border-gray-300 rounded-md shadow-sm focus:ring-indigo-500 focus:border-indigo-500">
										</div>
										
										<div>
											<label class="block text-sm font-medium text-gray-700">Enddatum (optional)</label>
											<input type="date" id="editEndDate" class="mt-1 block w-full border-gray-300 rounded-md shadow-sm focus:ring-indigo-500 focus:border-indigo-500">
											<p class="mt-1 text-sm text-gray-500">Leer lassen für unbegrenzte Laufzeit</p>
										</div>
									</div>
									
									<div class="flex justify-end space-x-3 mt-6">
										<button type="button" id="cancelEdit" class="px-4 py-2 text-sm font-medium text-gray-700 bg-gray-300 rounded-md hover:bg-gray-400">
											Abbrechen
										</button>
										<button type="submit" class="px-4 py-2 text-sm font-medium text-white bg-indigo-600 rounded-md hover:bg-indigo-700">
											Speichern
										</button>
									</div>
								</form>
							</div>
						</div>
					</div>

					<!-- JavaScript für Interaktionen -->
					<script>
						document.addEventListener('DOMContentLoaded', function() {
							// Edit Modal Funktionalität
							const modal = document.getElementById('editModal');
							const editForm = document.getElementById('editForm');
							const cancelBtn = document.getElementById('cancelEdit');
							let currentRuleId = null;

							// Edit Button Event Listener
							document.querySelectorAll('.edit-rule-btn').forEach(btn => {
								btn.addEventListener('click', function() {
									currentRuleId = this.dataset.ruleId;
									
									// Formular mit aktuellen Werten füllen
									document.getElementById('editDescription').value = this.dataset.description;
									document.getElementById('editAmount').value = this.dataset.amount;
									document.getElementById('editType').value = this.dataset.type;
									document.getElementById('editInterval').value = this.dataset.interval;
									document.getElementById('editStartDate').value = this.dataset.startDate;
									document.getElementById('editEndDate').value = this.dataset.endDate || '';
									
									modal.classList.remove('hidden');
								});
							});

							// Cancel Button
							cancelBtn.addEventListener('click', function() {
								modal.classList.add('hidden');
							});

							// Form Submit
							editForm.addEventListener('submit', function(e) {
								e.preventDefault();
								
								const formData = {
									description: document.getElementById('editDescription').value,
									amount: parseFloat(document.getElementById('editAmount').value),
									type: document.getElementById('editType').value,
									interval: document.getElementById('editInterval').value,
									start_date: document.getElementById('editStartDate').value,
									end_date: document.getElementById('editEndDate').value
								};

								fetch(`/api/recurring-rules/${currentRuleId}`, {
									method: 'PUT',
									headers: {
										'Content-Type': 'application/json',
									},
									body: JSON.stringify(formData)
								})
								.then(response => response.json())
								.then(data => {
									if (data.success) {
										location.reload();
									} else {
										alert('Fehler beim Speichern: ' + (data.error || 'Unbekannter Fehler'));
									}
								})
								.catch(error => {
									alert('Fehler: ' + error.message);
								});
							});

							// Toggle Button Event Listener
							document.querySelectorAll('.toggle-rule-btn').forEach(btn => {
								btn.addEventListener('click', function() {
									const ruleId = this.dataset.ruleId;
									
									fetch(`/transactions/recurring/${ruleId}/toggle`, {
										method: 'POST'
									})
									.then(response => response.json())
									.then(data => {
										if (data.success) {
											location.reload();
										}
									});
								});
							});

							// Delete Button Event Listener
							document.querySelectorAll('.delete-rule-btn').forEach(btn => {
								btn.addEventListener('click', function() {
									if (confirm('Sind Sie sicher, dass Sie diese wiederkehrende Transaktion löschen möchten?')) {
										const ruleId = this.dataset.ruleId;
										
										fetch(`/api/recurring-rules/${ruleId}`, {
											method: 'DELETE'
										})
										.then(response => response.json())
										.then(data => {
											if (data.success) {
												location.reload();
											}
										});
									}
								});
							});
						});
					</script>
				</div>
			</div>
		</div>
	}
}