{% extends "layout.html" %}
{% block main %}

<div class="bg-[#F2EFEB] min-h-[calc(100vh-6.5rem)] py-8">
    <div class="container mx-auto px-4">
        <!-- Header & Search -->
        <div class="flex flex-col md:flex-row justify-between items-stretch md:items-center gap-4 mb-8">
            <h1 class="text-3xl font-display font-black uppercase tracking-tighter text-[#111111]">Video Library</h1>

            <!-- Bulk-action bar (visible in select mode only) -->
            <div id="bulk-bar" class="hidden w-full md:w-auto items-center justify-between md:justify-end gap-2 border border-[#111111] bg-white p-2">
                <button type="button" onclick="selectAll()"
                        class="btn-ghost-neo h-10">
                    <i data-lucide="check-square" class="w-4 h-4 mr-1"></i>
                    <span id="select-all-label">Select All</span>
                </button>
                <button type="button" onclick="cancelSelectMode()"
                        class="btn-ghost-neo h-10">
                    Cancel
                </button>
                <button id="bulk-delete-btn" type="button" onclick="confirmBulkDelete()"
                        class="btn-danger-neo text-sm h-10">
                    <i data-lucide="trash-2" class="w-4 h-4 mr-1"></i>
                    Delete (<span id="selection-count">0</span>)
                </button>
            </div>

            <!-- Normal toolbar (hidden in select mode) -->
            <div id="normal-toolbar" class="flex items-center gap-2 w-full md:w-auto">
                <button type="button" onclick="toggleSelectMode()"
                        class="btn-ghost-neo shrink-0" style="height: 3rem; min-height: 3rem;">
                    <i data-lucide="check-square" class="w-4 h-4 mr-1"></i>
                    Select
                </button>
                <div class="relative w-full md:w-72">
                    <i data-lucide="search" class="absolute left-3 top-1/2 -translate-y-1/2 w-4 h-4 text-[#111111]/40"></i>
                    <input type="text"
                           class="searchFilter input-neo w-full pl-10"
                           style="height: 3rem;"
                           placeholder="Search videos..."
                           onkeyup="searchFilter()">
                </div>
            </div>
        </div>

        <!-- Video Grid -->
        <div class="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-3 xl:grid-cols-4 gap-6" id="videos">
            <!-- Videos will be injected here -->
        </div>

        <!-- Empty State -->
        <div id="empty-state" class="hidden flex flex-col items-center justify-center py-20 text-[#111111]/30">
            <i data-lucide="video-off" class="w-16 h-16 mb-4"></i>
            <p class="text-lg font-mono uppercase tracking-wider">No videos found</p>
        </div>
    </div>
</div>

<!-- Video Player Modal -->
<dialog id="player_modal" class="modal modal-bottom sm:modal-middle">
    <div class="modal-box bg-white border border-[#111111] max-w-2xl p-0 overflow-hidden">
        <div class="flex justify-between items-center px-4 py-3 border-b border-[#111111]">
            <h3 id="player_title" class="font-mono text-sm text-[#111111] truncate pr-4 uppercase"></h3>
            <button type="button" onclick="closePlayer()" class="btn-ghost-neo p-1">
                <i data-lucide="x" class="w-4 h-4"></i>
            </button>
        </div>
        <video id="player_video" class="w-full bg-black" controls playsinline></video>
    </div>
    <form method="dialog" class="modal-backdrop"><button>close</button></form>
</dialog>

<!-- Delete Confirmation Modal -->
<dialog id="delete_modal" class="modal">
    <div class="modal-box bg-white border border-[#111111]">
        <div class="flex items-center gap-3 mb-3">
            <i data-lucide="triangle-alert" class="w-5 h-5 text-[#DE6C56] shrink-0"></i>
            <h3 class="font-display font-black uppercase tracking-tighter text-lg text-[#111111]">Delete Video?</h3>
        </div>
        <p id="delete-modal-msg" class="text-[#111111]/60 mb-6 text-sm font-mono"></p>
        <div class="modal-action mt-0">
            <form method="dialog">
                <button class="btn-ghost-neo">Cancel</button>
            </form>
            <button type="button" class="btn-danger-neo text-sm" onclick="executeDelete()">
                <i data-lucide="trash-2" class="w-4 h-4 mr-1"></i>
                Delete
            </button>
        </div>
    </div>
    <form method="dialog" class="modal-backdrop"><button>close</button></form>
</dialog>

<script>
    const intervals = [
        { label: 'year', seconds: 31536000 },
        { label: 'month', seconds: 2592000 },
        { label: 'day', seconds: 86400 },
        { label: 'hour', seconds: 3600 },
        { label: 'minute', seconds: 60 },
        { label: 'second', seconds: 1 }
    ];

    function timeSince(date) {
        const seconds = Math.floor((Date.now() / 1000 - date));
        const interval = intervals.find(i => i.seconds <= seconds) || intervals[intervals.length - 1];
        const count = Math.floor(seconds / interval.seconds);
        return `${count} ${interval.label}${count !== 1 ? 's' : ''} ago`;
    }

    function categoryLabel(subreddit) {
        if (!subreddit) return "";
        if (subreddit === "threads") return "Threads";
        return `r/${subreddit}`;
    }

    function sourceUrl(subreddit, id) {
        if (subreddit === "threads") {
            return `https://www.threads.net/post/${id}`;
        }
        return `https://www.reddit.com/r/${subreddit}/comments/${id}/`;
    }

    function checkTitle(reddit_title, filename) {
        const file = filename.slice(0, -4);
        return reddit_title === file ? reddit_title : file;
    }

    // Escape arbitrary strings for safe embedding inside HTML attributes
    function h(str) {
        return String(str ?? '')
            .replace(/&/g, '&amp;')
            .replace(/"/g, '&quot;')
            .replace(/</g, '&lt;')
            .replace(/>/g, '&gt;');
    }

    async function loadVideos() {
        try {
            const response = await fetch("videos.json");
            const data = await response.json();
            data.sort((b, a) => a['time'] - b['time']);

            const container = document.getElementById('videos');
            container.innerHTML = data.map(v => {
                const title = checkTitle(v.reddit_title, v.filename);
                return `
                <div class="video-card group bg-white border border-[#111111] relative hover:border-[#DE6C56] transition-colors duration-200 flex flex-col min-h-[23.25rem]"
                     data-video-id="${h(v.id)}">

                    <!-- Checkbox overlay (shown in select mode) -->
                    <div class="select-overlay hidden absolute top-3 right-3 z-10 pointer-events-none">
                        <input type="checkbox" class="card-checkbox w-5 h-5 pointer-events-auto accent-[#DE6C56]" />
                    </div>

                    <button type="button"
                            class="play-btn aspect-video w-full bg-[#111111]/5 flex items-center justify-center relative overflow-hidden cursor-pointer border-b border-[#111111]"
                            data-video-id="${h(v.id)}"
                            data-video-title="${h(title)}">
                        <i data-lucide="play-circle" class="w-12 h-12 text-[#111111]/30 group-hover:text-[#DE6C56] transition-colors"></i>
                        <div class="absolute top-3 left-3">
                            <span class="inline-block bg-white border border-[#111111] text-[#111111] font-mono text-[10px] uppercase tracking-wider px-2 py-0.5">
                                ${h(categoryLabel(v.subreddit))}
                            </span>
                        </div>
                    </button>

                    <div class="p-4 flex flex-col flex-1">
                        <h3 class="text-[#111111] font-mono text-sm font-medium line-clamp-2 break-words mb-4 min-h-10" title="${h(title)}">
                            ${h(title)}
                        </h3>

                        <div class="flex items-center justify-between gap-2 mt-auto">
                            <div class="flex gap-1">
                                <a href="${h(sourceUrl(v.subreddit, v.id))}" target="_blank"
                                   class="btn-ghost-neo p-2"
                                   title="View Source">
                                    <i data-lucide="external-link" class="w-4 h-4"></i>
                                </a>
                                <a href="/video/${encodeURIComponent(v.id)}?download=1" download
                                   class="btn-ghost-neo p-2"
                                   title="Download">
                                    <i data-lucide="download" class="w-4 h-4"></i>
                                </a>
                            </div>

                            <div class="flex gap-1">
                                <button class="btn-ghost-neo p-2 copy-btn"
                                        data-copy="${h(sourceUrl(v.subreddit, v.id))}"
                                        title="Copy Link">
                                    <i data-lucide="link" class="w-4 h-4"></i>
                                </button>
                                <button class="btn-ghost-neo p-2 hover:text-[#DE6C56] delete-btn"
                                        data-video-id="${h(v.id)}"
                                        title="Delete">
                                    <i data-lucide="trash-2" class="w-4 h-4"></i>
                                </button>
                            </div>
                        </div>

                        <div class="mt-4 pt-4 border-t border-[#111111]/20 flex justify-between items-center">
                            <span class="text-[10px] uppercase tracking-wider text-[#111111]/40 font-mono">
                                ${timeSince(v.time)}
                            </span>
                        </div>
                    </div>
                </div>`;
            }).join('');

            // Wire play buttons — in select mode, toggle checkbox instead of playing
            container.querySelectorAll('.play-btn').forEach(btn => {
                btn.addEventListener('click', () => {
                    if (selectMode) {
                        const card = btn.closest('.video-card');
                        const cb = card.querySelector('.card-checkbox');
                        cb.checked = !cb.checked;
                        updateSelectionCount();
                    } else {
                        openPlayer(`/video/${encodeURIComponent(btn.dataset.videoId)}`, btn.dataset.videoTitle);
                    }
                });
            });

            // Wire copy buttons
            container.querySelectorAll('.copy-btn').forEach(btn => {
                btn.addEventListener('click', () => {
                    navigator.clipboard.writeText(btn.dataset.copy).then(() => {
                        const orig = btn.innerHTML;
                        btn.innerHTML = '<i data-lucide="check" class="w-4 h-4 text-[#4ADE80]"></i>';
                        lucide.createIcons();
                        setTimeout(() => { btn.innerHTML = orig; lucide.createIcons(); }, 2000);
                    });
                });
            });

            // Wire single-delete buttons
            container.querySelectorAll('.delete-btn').forEach(btn => {
                btn.addEventListener('click', () => confirmSingleDelete(btn.dataset.videoId));
            });

            // Wire checkboxes to update the bulk-delete counter
            container.querySelectorAll('.card-checkbox').forEach(cb => {
                cb.addEventListener('change', updateSelectionCount);
            });

            // Re-init icons
            lucide.createIcons();
        } catch (error) {
            console.error("Error loading videos:", error);
        }
    }

    // ── Select mode ────────────────────────────────────────────────────────────
    let selectMode = false;
    let pendingDeleteIds = [];

    function toggleSelectMode() {
        selectMode = true;
        document.getElementById('bulk-bar').classList.remove('hidden');
        document.getElementById('bulk-bar').classList.add('flex');
        document.getElementById('normal-toolbar').classList.add('hidden');
        document.querySelectorAll('.select-overlay').forEach(el => el.classList.remove('hidden'));
        document.querySelectorAll('.card-checkbox').forEach(cb => cb.checked = false);
        updateSelectionCount();
        lucide.createIcons();
    }

    function cancelSelectMode() {
        selectMode = false;
        document.getElementById('bulk-bar').classList.add('hidden');
        document.getElementById('bulk-bar').classList.remove('flex');
        document.getElementById('normal-toolbar').classList.remove('hidden');
        document.querySelectorAll('.select-overlay').forEach(el => el.classList.add('hidden'));
        document.querySelectorAll('.card-checkbox').forEach(cb => cb.checked = false);
        updateSelectionCount();
    }

    function selectAll() {
        const checkboxes = document.querySelectorAll('.card-checkbox');
        const allChecked = [...checkboxes].every(cb => cb.checked);
        checkboxes.forEach(cb => cb.checked = !allChecked);
        document.getElementById('select-all-label').textContent = allChecked ? 'Select All' : 'Deselect All';
        updateSelectionCount();
    }

    function updateSelectionCount() {
        const count = document.querySelectorAll('.card-checkbox:checked').length;
        document.getElementById('selection-count').textContent = count;
        document.getElementById('bulk-delete-btn').disabled = count === 0;
    }

    function getSelectedIds() {
        return [...document.querySelectorAll('.card-checkbox:checked')]
            .map(cb => cb.closest('.video-card').dataset.videoId);
    }

    // ── Delete confirmation ─────────────────────────────────────────────────
    function confirmBulkDelete() {
        pendingDeleteIds = getSelectedIds();
        if (!pendingDeleteIds.length) return;
        const n = pendingDeleteIds.length;
        document.getElementById('delete-modal-msg').textContent =
            `Are you sure you want to delete ${n} video${n !== 1 ? 's' : ''}? This cannot be undone.`;
        document.getElementById('delete_modal').showModal();
    }

    function confirmSingleDelete(videoId) {
        pendingDeleteIds = [videoId];
        document.getElementById('delete-modal-msg').textContent =
            'Are you sure you want to delete this video? This cannot be undone.';
        document.getElementById('delete_modal').showModal();
    }

    async function executeDelete() {
        document.getElementById('delete_modal').close();
        if (!pendingDeleteIds.length) return;

        const ids = [...pendingDeleteIds];
        pendingDeleteIds = [];

        try {
            await fetch('/videos/delete', {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({ ids })
            });
        } catch (err) {
            console.error('Delete request failed:', err);
        }

        // Remove cards from DOM regardless (optimistic UI)
        ids.forEach(id => {
            const card = document.querySelector(`.video-card[data-video-id="${CSS.escape(id)}"]`);
            if (card) card.remove();
        });

        // Show empty state if nothing remains
        const remaining = document.querySelectorAll('.video-card:not(.hidden)').length;
        document.getElementById('empty-state').classList.toggle('hidden', remaining > 0);

        if (selectMode) cancelSelectMode();
    }

    function searchFilter() {
        const query = document.querySelector(".searchFilter") ? document.querySelector(".searchFilter").value.toLowerCase() : '';
        const cards = document.querySelectorAll(".video-card");
        let visibleCount = 0;

        cards.forEach(card => {
            const text = card.textContent.toLowerCase();
            const matches = text.includes(query);
            card.classList.toggle('hidden', !matches);
            if (matches) visibleCount++;
        });

        document.getElementById('empty-state').classList.toggle('hidden', visibleCount > 0);
    }

    function openPlayer(src, title) {
        const modal = document.getElementById('player_modal');
        const video = document.getElementById('player_video');
        const titleEl = document.getElementById('player_title');
        titleEl.textContent = title || '';
        video.src = src;
        modal.showModal();
        video.play().catch(() => {});
    }

    function closePlayer() {
        const modal = document.getElementById('player_modal');
        const video = document.getElementById('player_video');
        video.pause();
        video.removeAttribute('src');
        video.load();
        modal.close();
    }

    document.getElementById('player_modal').addEventListener('close', () => {
        const video = document.getElementById('player_video');
        video.pause();
        video.removeAttribute('src');
        video.load();
    });

    document.addEventListener('DOMContentLoaded', loadVideos);
</script>

{% endblock %}