package components

import "context"

type TwoFactorSetupData struct {
	QRCodeURL    string
	Secret       string
	BackupCodes  []string
	ErrorMessage string
}

templ TwoFactorSetup(ctx context.Context, data TwoFactorSetupData) {
	@LayoutWithContext("Two-Factor Authentication Setup", ctx) {
		<div class="min-h-screen bg-secondary-50 dark:bg-secondary-900 py-12">
			<div class="max-w-3xl mx-auto px-4 sm:px-6 lg:px-8">
				<div class="bg-white dark:bg-secondary-800 shadow rounded-lg p-6">
					<div class="text-center mb-8">
						<h2 class="text-3xl font-bold text-secondary-900 dark:text-secondary-100">Set Up Two-Factor Authentication</h2>
						<p class="mt-2 text-secondary-600 dark:text-secondary-400">Enhance your account security with 2FA</p>
					</div>

					if data.ErrorMessage != "" {
						<div class="bg-red-100 dark:bg-red-900 border border-red-400 dark:border-red-700 text-red-700 dark:text-red-300 px-4 py-3 rounded-lg mb-6" role="alert">
							<div class="flex items-center">
								<i class="fas fa-exclamation-circle mr-2"></i>
								<span class="block sm:inline">{ data.ErrorMessage }</span>
							</div>
						</div>
					}

					<div class="space-y-8">
						<div>
							<h3 class="text-xl font-semibold text-secondary-900 dark:text-secondary-100 mb-4">1. Scan QR Code</h3>
							<p class="text-secondary-600 dark:text-secondary-400 mb-4">
								Scan this QR code with your authenticator app (Google Authenticator, Authy, etc.)
							</p>
							<div class="flex justify-center mb-4">
								<img src={ data.QRCodeURL } alt="QR Code" class="border border-secondary-200 dark:border-secondary-700 rounded-lg p-2 bg-white"/>
							</div>
							<div class="text-center">
								<p class="text-sm text-secondary-600 dark:text-secondary-400">
									Can't scan the QR code? Use this code instead:
								</p>
								<code class="block mt-2 p-2 bg-secondary-100 dark:bg-secondary-700 rounded font-mono text-sm">
									{ data.Secret }
								</code>
							</div>
						</div>

						<div>
							<h3 class="text-xl font-semibold text-secondary-900 dark:text-secondary-100 mb-4">2. Verify Setup</h3>
							<form 
								method="POST"
								action="/profile/2fa/verify"
								class="space-y-4"
								x-data="{ code: '', loading: false }"
								@submit="loading = true">
								<div>
									<label for="code" class="block text-sm font-medium text-secondary-700 dark:text-secondary-300 mb-1">
										Enter the 6-digit code from your authenticator app
									</label>
									<input 
										type="text" 
										id="code"
										name="code"
										x-model="code"
										class="form-input block w-full"
										pattern="[0-9]*"
										inputmode="numeric"
										maxlength="6"
										required/>
								</div>
								<button 
									type="submit"
									class="btn-primary w-full"
									x-bind:disabled="code.length !== 6 || loading">
									<span x-show="!loading">Verify and Enable 2FA</span>
									<span x-show="loading" class="flex items-center justify-center">
										<svg class="animate-spin -ml-1 mr-3 h-5 w-5 text-white" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24">
											<circle class="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" stroke-width="4"></circle>
											<path class="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path>
										</svg>
										Verifying...
									</span>
								</button>
							</form>
						</div>

						if len(data.BackupCodes) > 0 {
							<div>
								<h3 class="text-xl font-semibold text-secondary-900 dark:text-secondary-100 mb-4">3. Save Backup Codes</h3>
								<p class="text-secondary-600 dark:text-secondary-400 mb-4">
									Store these backup codes in a safe place. You can use them to access your account if you lose your authenticator device.
								</p>
								<div class="grid grid-cols-2 gap-4 mb-4">
									for _, code := range data.BackupCodes {
										<div class="p-2 bg-secondary-100 dark:bg-secondary-700 rounded font-mono text-sm text-center">
											{ code }
										</div>
									}
								</div>
								<div class="text-center">
									<button 
										class="btn-secondary"
										onclick="downloadBackupCodes(this)">
										<i class="fas fa-download mr-2"></i>
										Download Backup Codes
									</button>
									<script>
										function downloadBackupCodes(button) {
											// Get backup codes from the displayed elements
											const codes = Array.from(
												document.querySelectorAll('.bg-secondary-100.dark\\:bg-secondary-700')
											).map(el => el.textContent.trim());
											
											// Create content for the file
											const content = 
												"2FA Backup Codes - Keep these safe!\n" +
												"=====================================\n\n" +
												codes.join("\n") +
												"\n\n" +
												"Generated: " + new Date().toISOString().split('T')[0] + "\n" +
												"These codes can be used to access your account if you lose access to your authenticator app.\n" +
												"Each code can only be used once. Keep these codes safe and secure.";
											
											// Create blob and download link
											const blob = new Blob([content], { type: 'text/plain' });
											const url = window.URL.createObjectURL(blob);
											const a = document.createElement('a');
											a.href = url;
											a.download = '2fa-backup-codes.txt';
											
											// Trigger download
											document.body.appendChild(a);
											a.click();
											
											// Cleanup
											window.URL.revokeObjectURL(url);
											document.body.removeChild(a);
										}
									</script>
								</div>
							</div>
						}
					</div>
				</div>
			</div>
		</div>
	}
}