// Copy to clipboard
function copyToClipboard(text) {
    navigator.clipboard.writeText(text).then(() => {
        // Show success feedback
        const btn = event.target;
        const originalText = btn.textContent;
        btn.textContent = '✓ Copied!';
        setTimeout(() => {
            btn.textContent = originalText;
        }, 2000);
    }).catch(err => {
        console.error('Failed to copy:', err);
    });
}

// Time ago helper (for client-side rendering)
function timeAgo(date) {
    const seconds = Math.floor((new Date() - new Date(date)) / 1000);

    const intervals = {
        year: 31536000,
        month: 2592000,
        week: 604800,
        day: 86400,
        hour: 3600,
        minute: 60,
        second: 1
    };

    for (const [name, secondsInInterval] of Object.entries(intervals)) {
        const interval = Math.floor(seconds / secondsInInterval);
        if (interval >= 1) {
            return interval === 1 ? `1 ${name} ago` : `${interval} ${name}s ago`;
        }
    }

    return 'just now';
}

// Update timestamps on page load and HTMX swaps
function updateTimestamps() {
    document.querySelectorAll('time[datetime]').forEach(el => {
        const date = el.getAttribute('datetime');
        if (date && !el.dataset.noUpdate) {
            const ago = timeAgo(date);
            if (el.textContent !== ago) {
                el.textContent = ago;
            }
        }
    });
}

// Initial timestamp update
document.addEventListener('DOMContentLoaded', updateTimestamps);

// Update timestamps after HTMX swaps
document.addEventListener('htmx:afterSwap', updateTimestamps);

// Update timestamps periodically
setInterval(updateTimestamps, 60000); // Every minute

// Toggle repository details (for images page)
function toggleRepo(name) {
    const details = document.getElementById('repo-' + name);
    const btn = document.getElementById('btn-' + name);

    if (details.style.display === 'none') {
        details.style.display = 'block';
        btn.textContent = '▲';
    } else {
        details.style.display = 'none';
        btn.textContent = '▼';
    }
}

// User dropdown menu
document.addEventListener('DOMContentLoaded', () => {
    const menuBtn = document.getElementById('user-menu-btn');
    const dropdownMenu = document.getElementById('user-dropdown-menu');

    if (menuBtn && dropdownMenu) {
        // Toggle dropdown on button click
        menuBtn.addEventListener('click', (e) => {
            e.stopPropagation();
            const isExpanded = menuBtn.getAttribute('aria-expanded') === 'true';

            if (isExpanded) {
                closeDropdown();
            } else {
                openDropdown();
            }
        });

        // Close dropdown when clicking outside
        document.addEventListener('click', (e) => {
            if (!menuBtn.contains(e.target) && !dropdownMenu.contains(e.target)) {
                closeDropdown();
            }
        });

        // Close dropdown on Escape key
        document.addEventListener('keydown', (e) => {
            if (e.key === 'Escape') {
                closeDropdown();
            }
        });

        function openDropdown() {
            menuBtn.setAttribute('aria-expanded', 'true');
            dropdownMenu.removeAttribute('hidden');
        }

        function closeDropdown() {
            menuBtn.setAttribute('aria-expanded', 'false');
            dropdownMenu.setAttribute('hidden', '');
        }
    }
});

// Toggle star on a repository
async function toggleStar(handle, repository) {
    const starBtn = document.getElementById('star-btn');
    const starIcon = document.getElementById('star-icon');
    const starCountEl = document.getElementById('star-count');

    if (!starBtn || !starIcon || !starCountEl) return;

    // Disable button during request
    starBtn.disabled = true;

    try {
        // Check current state
        const isStarred = starIcon.textContent === '★';
        const method = isStarred ? 'DELETE' : 'POST';
        const url = `/api/stars/${handle}/${repository}`;

        const response = await fetch(url, {
            method: method,
            credentials: 'include',
        });

        if (response.status === 401) {
            console.log('Not authenticated, redirecting to login');
            // Not authenticated, redirect to login
            window.location.href = '/auth/oauth/login';
            return;
        }

        if (!response.ok) {
            const errorText = await response.text();
            console.error(`Toggle star failed: ${response.status} ${response.statusText}`, errorText);
            throw new Error(`Failed to toggle star: ${errorText}`);
        }

        const data = await response.json();

        // Update UI optimistically
        if (data.starred) {
            starIcon.textContent = '★';
            starBtn.classList.add('starred');
            // Optimistically increment count
            const currentCount = parseInt(starCountEl.textContent) || 0;
            starCountEl.textContent = currentCount + 1;
        } else {
            starIcon.textContent = '☆';
            starBtn.classList.remove('starred');
            // Optimistically decrement count
            const currentCount = parseInt(starCountEl.textContent) || 0;
            starCountEl.textContent = Math.max(0, currentCount - 1);
        }

        // Don't fetch count immediately - trust the optimistic update
        // The actual count will be correct on next page load

    } catch (err) {
        console.error('Error toggling star:', err);
        alert(`Failed to toggle star: ${err.message}`);
    } finally {
        starBtn.disabled = false;
    }
}

// Load star status and count for current repository
async function loadStarStatus() {
    const starBtn = document.getElementById('star-btn');
    const starIcon = document.getElementById('star-icon');

    if (!starBtn || !starIcon) return; // Not on repository page

    // Extract handle and repository from button onclick attribute
    const onclick = starBtn.getAttribute('onclick');
    const match = onclick.match(/toggleStar\('([^']+)',\s*'([^']+)'\)/);
    if (!match) return;

    const handle = match[1];
    const repository = match[2];

    try {
        // Check if user has starred this repo
        const starResponse = await fetch(`/api/stars/${handle}/${repository}`, {
            credentials: 'include',
        });

        if (starResponse.ok) {
            const starData = await starResponse.json();
            console.log('Star status data:', starData);
            if (starData.starred) {
                starIcon.textContent = '★';
                starBtn.classList.add('starred');
            }
        } else {
            const errorText = await starResponse.text();
            console.error('Failed to load star status:', errorText);
        }

        // Load star count
        await loadStarCount(handle, repository);

    } catch (err) {
        console.error('Error loading star status:', err);
    }
}

// Load star count for a repository
async function loadStarCount(handle, repository) {
    const starCountEl = document.getElementById('star-count');
    if (!starCountEl) return;

    try {
        const statsResponse = await fetch(`/api/stats/${handle}/${repository}`, {
            credentials: 'include',
        });

        if (statsResponse.ok) {
            const stats = await statsResponse.json();
            console.log('Stats data:', stats);
            starCountEl.textContent = stats.star_count || 0;
        } else {
            const errorText = await statsResponse.text();
            console.error('Failed to load stats:', errorText);
        }
    } catch (err) {
        console.error('Error loading star count:', err);
    }
}