{% extends 'base.html' %}
{% load static %}
{% load markdown %}

{% block title %}{{ project.title }} - Packs Site{% endblock %}

{% block content %}
<div class="project-header card">
    <div class="project-avatar">
        {% if project.thumbnail %}
            <img src="{{ project.thumbnail_url }}" alt="{{ project.title }}">
        {% else %}
            <div class="default-avatar large">{{ project.title|first|upper }}</div>
        {% endif %}
    </div>
    <div class="project-header-main">
        <div class="project-title-row">
            <h1>{{ project.title }}</h1>
            <span class="category-badge">{{ project.get_category_display }}</span>
            <span class="project-id-badge" title="Project ID">#{{ project.pk }}</span>
        </div>
        {% if project.summary %}<p class="project-summary">{{ project.summary }}</p>{% endif %}
        <div class="project-meta">
            <span class="project-owner"><i class="fas fa-user"></i>
                <a href="{% url 'profiles:user_profile' project.owner.username %}">{{ project.owner.username }}</a>
            </span>
            <span class="project-stat"><i class="fas fa-download"></i> {{ project.downloads }}</span>
            <span class="project-stat"><i class="fas fa-tag"></i> {{ versions|length }} version{{ versions|length|pluralize }}</span>
        </div>
        {% if can_edit %}
            <div class="project-actions">
                <a href="{% url 'library:version_upload' project.slug %}" class="btn btn-primary"><i class="fas fa-upload"></i> New version</a>
                <a href="{% url 'library:asset_upload' project.slug %}" class="btn btn-secondary"><i class="fas fa-images"></i> Add media</a>
                <a href="{% url 'library:project_edit' project.slug %}" class="btn btn-secondary"><i class="fas fa-pen"></i> Edit</a>
                {% if request.user == project.owner %}
                    <a href="{% url 'library:contributors' project.slug %}" class="btn btn-secondary"><i class="fas fa-users"></i> Contributors</a>
                    <a href="{% url 'library:project_delete' project.slug %}" class="btn btn-danger"><i class="fas fa-trash"></i></a>
                {% endif %}
            </div>
        {% endif %}
    </div>
</div>

{% if tags %}
    <div class="project-tags card">
        {% regroup tags by tag.category as tag_groups %}
        {% for group in tag_groups %}
            <div class="tag-group">
                <span class="tag-group-label">
                    <span class="tag-dot" style="background: {{ group.grouper.color }};"></span>
                    {{ group.grouper.name }}
                </span>
                {% for link in group.list %}
                    <a href="{% url 'library:browse' %}?tag={{ link.tag.name }}" class="tag-chip"
                       style="border-color: {{ group.grouper.color }}; color: {{ group.grouper.color }};">{{ link.tag.name }}</a>
                {% endfor %}
            </div>
        {% endfor %}
    </div>
{% endif %}

<div class="tab-bar" role="tablist">
    <button class="tab-btn active" data-tab="{% if project.category == 'guide' %}guide{% else %}description{% endif %}" role="tab">
        {% if project.category == 'guide' %}Guide{% else %}Description{% endif %}
    </button>
    <button class="tab-btn" data-tab="versions" role="tab">Versions</button>
    {% if project.category == 'modpack' %}<button class="tab-btn" data-tab="mods" role="tab">Mods</button>{% endif %}
    <button class="tab-btn" data-tab="gallery" role="tab">Gallery</button>
</div>

<section class="tab-panel active" id="tab-{% if project.category == 'guide' %}guide{% else %}description{% endif %}">
    <div class="card">
        {% if project.category == 'guide' %}
            <div class="guide-docs">
                {% if guide_docs %}
                    <div class="guide-switcher" role="tablist">
                        {% for doc in guide_docs %}
                            <button type="button" class="guide-switch-btn{% if forloop.first %} active{% endif %}"
                                    data-url="{% url 'library:guide_doc' project.slug doc.version.pk doc.file.uuid %}">{{ doc.filename }}</button>
                        {% endfor %}
                    </div>
                    <div class="markdown-body guide-content" id="guide-content">
                        <p class="empty-hint">Loading…</p>
                    </div>
                {% else %}
                    <p class="empty-hint">No guide documents uploaded yet.</p>
                {% endif %}
            </div>
        {% elif project.description %}
            <div class="markdown-body project-description">{{ project.description|markdown }}</div>
        {% else %}
            <p class="empty-hint">No description yet.</p>
        {% endif %}
    </div>
</section>

<section class="tab-panel" id="tab-versions">
    <div class="card">
        <h2><i class="fas fa-history"></i> Versions</h2>
        {% for version in versions %}
            <div class="version-row">
                <div class="version-info">
                    <div class="version-name-row">
                        <strong class="version-name">{{ version.version_name }}</strong>
                        {% if forloop.first %}<span class="latest-badge">latest</span>{% endif %}
                        {% if version.pack_format %}<span class="pack-format-badge">pack format {{ version.pack_format }}</span>{% endif %}
                    </div>
                    <span class="version-date"><i class="fas fa-clock"></i> {{ version.created_at|date:"M j, Y" }}</span>
                    <span class="version-downloads"><i class="fas fa-download"></i> {{ version.downloads }}</span>
                </div>
                {% if version.pack_description %}
                    <p class="pack-description"><i class="fas fa-info-circle"></i> {{ version.pack_description }}</p>
                {% endif %}
                {% if version.changelog %}
                    <div class="markdown-body version-changelog">{{ version.changelog|markdown }}</div>
                {% endif %}
                <div class="version-files">
                    {% for vf in version.files.all %}
                        <div class="version-file">
                            {% if vf.is_png %}
                                <img class="version-file-thumb" src="{% url 'library:file_request' vf.file.uuid %}" alt="{{ vf.filename }}">
                            {% elif vf.is_markdown %}
                                <i class="fas fa-file-lines version-file-icon"></i>
                            {% else %}
                                <i class="fas fa-file-archive version-file-icon"></i>
                            {% endif %}
                            <span class="version-file-name">{{ vf.filename }}</span>
                            <a class="btn btn-primary btn-sm" href="{% url 'library:version_file_download' project.slug version.pk vf.file.uuid %}" title="Download {{ vf.filename }}">
                                <i class="fas fa-download"></i>
                            </a>
                        </div>
                    {% endfor %}
                </div>
            </div>
        {% empty %}
            <p class="empty-hint">No versions yet.</p>
        {% endfor %}
    </div>
</section>

{% if project.category == 'modpack' %}
<section class="tab-panel" id="tab-mods">
    <div class="card">
        <h2><i class="fas fa-cubes"></i> Mods</h2>
        {% for version in versions %}
            {% if version.mods_manifest.files %}
                <div class="mods-version">
                    <h3>{{ version.version_name }} <span class="mods-source-badge">{{ version.mods_manifest.source }}</span></h3>
                    <ul class="mods-list">
                        {% for mod in version.mods_manifest.files %}
                            <li><i class="fas fa-cube"></i> {{ mod.name }}</li>
                        {% endfor %}
                    </ul>
                </div>
            {% endif %}
        {% empty %}
            <p class="empty-hint">No mods detected in the uploaded packs.</p>
        {% endfor %}
    </div>
</section>
{% endif %}

<section class="tab-panel" id="tab-gallery">
    <div class="card">
        <h2><i class="fas fa-images"></i> Gallery</h2>
        <div class="gallery-grid">
            {% for asset in assets %}
                <figure class="gallery-item">
                    {% if asset.is_video %}
                        <video controls preload="metadata" src="{{ asset.file_url }}"></video>
                    {% else %}
                        <a href="{{ asset.file_url }}" target="_blank"><img src="{{ asset.file_url }}" alt="{{ asset.caption }}"></a>
                    {% endif %}
                    {% if asset.caption %}<figcaption>{{ asset.caption }}</figcaption>{% endif %}
                    {% if can_edit %}
                        <a href="{% url 'library:asset_delete' project.slug asset.pk %}" class="gallery-delete" title="Delete media"><i class="fas fa-trash"></i></a>
                    {% endif %}
                </figure>
            {% empty %}
                <p class="empty-hint">No media yet.</p>
            {% endfor %}
        </div>
    </div>
</section>
{% endblock %}

{% block extra_js %}
<script>
(function () {
    const buttons = document.querySelectorAll('.tab-btn');
    buttons.forEach(btn => {
        btn.addEventListener('click', () => {
            buttons.forEach(b => b.classList.remove('active'));
            document.querySelectorAll('.tab-panel').forEach(p => p.classList.remove('active'));
            btn.classList.add('active');
            document.getElementById('tab-' + btn.dataset.tab).classList.add('active');
        });
    });

    // Gallery deletion without a page reload, behind a confirmation dialog.
    document.querySelectorAll('.gallery-delete').forEach(link => {
        link.addEventListener('click', (e) => {
            e.preventDefault();
            if (!confirm('Delete this media? This cannot be undone.')) return;
            const xhr = new XMLHttpRequest();
            xhr.open('POST', link.getAttribute('href'));
            xhr.setRequestHeader('X-CSRFToken', getCookie('csrftoken'));
            xhr.onload = function () {
                if (xhr.status === 200) {
                    const figure = link.closest('figure.gallery-item');
                    if (figure) figure.remove();
                } else {
                    alert('Could not delete media.');
                }
            };
            xhr.onerror = function () {
                alert('Network error while deleting media.');
            };
            xhr.send();
        });
    });

    // Guide document file-switcher (fetches + renders the selected .md).
    const guideContent = document.getElementById('guide-content');
    if (guideContent) {
        const guideBtns = document.querySelectorAll('.guide-switch-btn');
        function loadGuide(url) {
            guideContent.innerHTML = '<p class="empty-hint">Loading…</p>';
            fetch(url, { headers: { 'Accept': 'text/html' } })
                .then(r => { if (!r.ok) throw new Error('http'); return r.text(); })
                .then(html => { guideContent.innerHTML = html; })
                .catch(() => { guideContent.innerHTML = '<p class="empty-hint">Could not load this document.</p>'; });
        }
        guideBtns.forEach(btn => {
            btn.addEventListener('click', () => {
                guideBtns.forEach(b => b.classList.remove('active'));
                btn.classList.add('active');
                loadGuide(btn.dataset.url);
            });
        });
        const first = guideBtns[0];
        if (first) loadGuide(first.dataset.url);
    }
})();
</script>
{% endblock %}