// Console-based authentication
window.login = async (password) => {
	if (!password) {
		console.error('Usage: login("your-password")');
		return;
	}
	try {
		const res = await fetch('/api/auth/login', {
			method: 'POST',
			headers: { 'Content-Type': 'application/json' },
			body: JSON.stringify({ password })
		});
		const data = await res.json();
		if (res.ok) {
			console.log(data.firstTime ? 'Password set! Reloading...' : 'Logged in! Reloading...');
			setTimeout(() => location.reload(), 500);
		} else {
			console.error(data.error || 'Login failed');
		}
	} catch (err) {
		console.error('Login error:', err);
	}
};

window.logout = async () => {
	try {
		await fetch('/api/auth/logout', { method: 'POST' });
		console.log('Logged out! Reloading...');
		setTimeout(() => location.reload(), 500);
	} catch (err) {
		console.error('Logout error:', err);
	}
};

// Modal functions
function showAddModal() {
	document.getElementById('add-modal').classList.add('active');
}

function hideAddModal() {
	document.getElementById('add-modal').classList.remove('active');
}

function showEditModal() {
	document.getElementById('edit-modal').classList.add('active');
}

function hideEditModal() {
	document.getElementById('edit-modal').classList.remove('active');
}

// Tab switching
document.addEventListener('DOMContentLoaded', () => {
	const tabs = document.querySelectorAll('.modal-tabs .tab');
	tabs.forEach(tab => {
		tab.addEventListener('click', () => {
			const tabId = tab.dataset.tab;
			
			// Update tab buttons
			tabs.forEach(t => t.classList.remove('active'));
			tab.classList.add('active');
			
			// Update tab content
			document.querySelectorAll('.tab-content').forEach(c => c.classList.remove('active'));
			document.getElementById('tab-' + tabId).classList.add('active');
		});
	});
	
	// URL preview on input
	const urlInput = document.querySelector('#link-form input[name="url"]');
	if (urlInput) {
		let debounceTimer;
		urlInput.addEventListener('input', (e) => {
			clearTimeout(debounceTimer);
			debounceTimer = setTimeout(() => fetchPreview(e.target.value), 500);
		});
	}
});

// Fetch URL preview
async function fetchPreview(url) {
	const preview = document.getElementById('link-preview');
	if (!url) {
		preview.classList.remove('active');
		preview.innerHTML = '';
		return;
	}
	
	try {
		const res = await fetch('/api/preview', {
			method: 'POST',
			headers: { 'Content-Type': 'application/json' },
			body: JSON.stringify({ url })
		});
		
		if (!res.ok) {
			const data = await res.json();
			preview.innerHTML = `<div class="preview-error">${data.error || 'Failed to fetch preview'}</div>`;
			preview.classList.add('active');
			return;
		}
		
		const data = await res.json();
		preview.dataset.preview = JSON.stringify(data);
		
		let html = '';
		if (data.imageUrl) {
			html += `<img src="${escapeHtml(data.imageUrl)}" alt="Preview">`;
		}
		if (data.title) {
			html += `<div class="preview-title">${escapeHtml(data.title)}</div>`;
		}
		if (data.description) {
			html += `<div class="preview-description">${escapeHtml(data.description)}</div>`;
		}
		if (data.isEmbed) {
			html += `<div class="preview-badge">${escapeHtml(data.provider.toUpperCase())} VIDEO</div>`;
		}
		
		preview.innerHTML = html || '<div>No preview available</div>';
		preview.classList.add('active');
		
		// Auto-fill title if empty
		const titleInput = document.querySelector('#link-form input[name="title"]');
		if (titleInput && !titleInput.value && data.title) {
			titleInput.value = data.title;
		}
	} catch (err) {
		console.error('Preview error:', err);
		preview.innerHTML = '<div class="preview-error">Failed to fetch preview</div>';
		preview.classList.add('active');
	}
}

// Submit link form
async function submitLink(event) {
	event.preventDefault();
	const form = event.target;
	const url = form.url.value;
	const tags = form.tags.value ? form.tags.value.split(',').map(t => t.trim()).filter(Boolean) : [];
	
	// Get preview data
	const preview = document.getElementById('link-preview');
	const previewData = preview.dataset.preview ? JSON.parse(preview.dataset.preview) : {};
	
	// Use form values, falling back to preview data
	const title = form.title.value || previewData.title || null;
	const description = form.description.value || previewData.description || null;
	
	try {
		const body = {
			url,
			title,
			description,
			tags,
			imageUrl: previewData.imageUrl || null,
		};
		
		if (previewData.isEmbed) {
			body.provider = previewData.provider;
			body.videoId = previewData.videoId;
			body.embedHtml = previewData.embedHtml;
		}
		
		const res = await fetch('/api/items/from-link', {
			method: 'POST',
			headers: { 'Content-Type': 'application/json' },
			body: JSON.stringify(body)
		});
		
		if (res.ok) {
			location.reload();
		} else {
			const data = await res.json();
			alert(data.error || 'Failed to add item');
		}
	} catch (err) {
		console.error('Submit error:', err);
		alert('Failed to add item');
	}
	
	return false;
}

// Submit upload form
async function submitUpload(event) {
	event.preventDefault();
	const form = event.target;
	const formData = new FormData(form);
	
	try {
		const res = await fetch('/api/items/upload', {
			method: 'POST',
			body: formData
		});
		
		if (res.ok) {
			location.reload();
		} else {
			const data = await res.json();
			alert(data.error || 'Failed to upload');
		}
	} catch (err) {
		console.error('Upload error:', err);
		alert('Failed to upload');
	}
	
	return false;
}

// Submit quote form
async function submitQuote(event) {
	event.preventDefault();
	const form = event.target;
	const text = form.text.value;
	const source = form.source.value || null;
	const sourceUrl = form.sourceUrl.value || null;
	const tags = form.tags.value ? form.tags.value.split(',').map(t => t.trim()).filter(Boolean) : [];
	
	try {
		const res = await fetch('/api/items/quote', {
			method: 'POST',
			headers: { 'Content-Type': 'application/json' },
			body: JSON.stringify({ text, source, sourceUrl, tags })
		});
		
		if (res.ok) {
			location.reload();
		} else {
			const data = await res.json();
			alert(data.error || 'Failed to add quote');
		}
	} catch (err) {
		console.error('Submit error:', err);
		alert('Failed to add quote');
	}
	
	return false;
}

// Edit item
function editItem(id) {
	showEditModal();
}

// Submit edit form
async function submitEdit(event) {
	event.preventDefault();
	const form = event.target;
	const id = form.id.value;
	const title = form.title.value || null;
	const description = form.description.value || null;
	const linkUrl = form.linkUrl.value || null;
	const tags = form.tags.value ? form.tags.value.split(',').map(t => t.trim()).filter(Boolean) : [];
	
	try {
		const res = await fetch(`/api/items/${id}`, {
			method: 'PUT',
			headers: { 'Content-Type': 'application/json' },
			body: JSON.stringify({ title, description, linkUrl, tags })
		});
		
		if (res.ok) {
			location.reload();
		} else {
			const data = await res.json();
			alert(data.error || 'Failed to update');
		}
	} catch (err) {
		console.error('Update error:', err);
		alert('Failed to update');
	}
	
	return false;
}

// Refresh metadata
async function refreshMetadata(id) {
	try {
		// Fetch current item data
		const itemRes = await fetch(`/api/items/${id}`);
		if (!itemRes.ok) {
			alert('Failed to fetch item');
			return;
		}
		const item = await itemRes.json();
		
		if (!item.linkUrl) {
			alert('Item has no link URL');
			return;
		}
		
		// Fetch fresh metadata
		const previewRes = await fetch('/api/preview', {
			method: 'POST',
			headers: { 'Content-Type': 'application/json' },
			body: JSON.stringify({ url: item.linkUrl })
		});
		if (!previewRes.ok) {
			const data = await previewRes.json();
			alert(data.error || 'Failed to fetch metadata');
			return;
		}
		const preview = await previewRes.json();
		
		// Check if user has made manual edits
		const titleChanged = item.title && preview.title && item.title !== preview.title;
		const descChanged = item.description && preview.description && item.description !== preview.description;
		const imageChanged = item.thumbnailSourceUrl && preview.imageUrl && item.thumbnailSourceUrl !== preview.imageUrl;
		
		if (titleChanged || descChanged || imageChanged) {
			let msg = 'This will overwrite your changes:\n';
			if (titleChanged) msg += `\nTitle: "${item.title}" → "${preview.title}"`;
			if (descChanged) msg += `\nDescription will be replaced`;
			if (imageChanged) msg += `\nImage will be replaced`;
			msg += '\n\nContinue?';
			
			if (!confirm(msg)) return;
		}
		
		// Proceed with refresh
		const res = await fetch(`/api/items/${id}/refresh`, { method: 'POST' });
		
		if (res.ok) {
			location.reload();
		} else {
			const data = await res.json();
			alert(data.error || 'Failed to refresh');
		}
	} catch (err) {
		console.error('Refresh error:', err);
		alert('Failed to refresh');
	}
}

// Replace media
async function submitReplaceMedia(event, id) {
	event.preventDefault();
	const form = event.target;
	const formData = new FormData(form);
	
	try {
		const res = await fetch(`/api/items/${id}/media`, {
			method: 'POST',
			body: formData
		});
		
		if (res.ok) {
			location.reload();
		} else {
			const data = await res.json();
			alert(data.error || 'Failed to replace media');
		}
	} catch (err) {
		console.error('Replace media error:', err);
		alert('Failed to replace media');
	}
	
	return false;
}

// Delete item
async function deleteItem(id) {
	if (!confirm('Delete this item?')) return;
	
	try {
		const res = await fetch(`/api/items/${id}`, { method: 'DELETE' });
		
		if (res.ok) {
			location.href = '/';
		} else {
			const data = await res.json();
			alert(data.error || 'Failed to delete');
		}
	} catch (err) {
		console.error('Delete error:', err);
		alert('Failed to delete');
	}
}

// Play video (initial click to start)
function playVideo(overlay) {
	const container = overlay.parentElement;
	const video = container.querySelector('video');
	if (video) {
		video.play();
		overlay.remove();
		// Show controls on hover
		video.addEventListener('mouseenter', () => video.controls = true);
		video.addEventListener('mouseleave', () => video.controls = false);
	}
}

// Utility
function escapeHtml(str) {
	const div = document.createElement('div');
	div.textContent = str;
	return div.innerHTML;
}