{% extends 'base_dashboard.html' %}

{% block title %}{{ action|default:"Add" }} Lesson — Online LMS{% endblock %}

{% block extra_css %}
<style>
  .lf-section {
    font-size: .78rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: .07em; color: #1a56db;
    display: flex; align-items: center; gap: .5rem; margin-bottom: 1rem; margin-top: .25rem;
  }
  .lf-section::after { content: ''; flex: 1; height: 1px; background: #e5e7eb; }
  .lf-context-banner {
    background: linear-gradient(90deg, #eff6ff, #dbeafe);
    border-radius: .75rem; padding: .875rem 1.125rem;
    display: flex; align-items: center; gap: .75rem; margin-bottom: 1.5rem;
  }
  .lf-context-banner .lfcb-icon {
    width: 38px; height: 38px; border-radius: .5rem; background: #1a56db;
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: .95rem; flex-shrink: 0;
  }
</style>
{% endblock %}

{% block content %}
<div class="d-flex justify-content-between align-items-start mb-4">
    <div>
        <h4 class="fw-bold mb-1">{{ action|default:"Add" }} Lesson</h4>
        <p class="text-muted small mb-0">Add content, media, and meeting details for this lesson</p>
    </div>
    <a href="{% url 'courses:manage_course' pk=module.course.pk %}" class="btn btn-outline-secondary btn-sm">
        <i class="bi bi-arrow-left me-1"></i>Back to Course
    </a>
</div>

<!-- Context banner -->
<div class="lf-context-banner">
    <div class="lfcb-icon"><i class="bi bi-layers-fill"></i></div>
    <div>
        <div class="fw-semibold small text-dark">{{ module.course.title }}</div>
        <div class="text-muted" style="font-size:.75rem;">Module: <strong>{{ module.title }}</strong></div>
    </div>
</div>

<form method="post" enctype="multipart/form-data" novalidate>
{% csrf_token %}
{% if form.non_field_errors %}
<div class="alert alert-danger rounded-3 small mb-3">
    {% for error in form.non_field_errors %}<div>{{ error }}</div>{% endfor %}
</div>
{% endif %}

<div class="row g-4 align-items-start">

    <!-- ── Left: main content ──────────────────── -->
    <div class="col-lg-8">

        <!-- Basic Info -->
        <div class="card border-0 shadow-sm rounded-4 mb-4">
            <div class="card-body p-4">
                <div class="lf-section"><i class="bi bi-info-circle"></i>Basic Information</div>
                <div class="row g-3">
                    <div class="col-12">
                        <label class="form-label fw-medium small">Lesson Title <span class="text-danger">*</span></label>
                        {{ form.title }}
                        {% if form.title.errors %}<div class="text-danger small mt-1">{{ form.title.errors.0 }}</div>{% endif %}
                    </div>
                    <div class="col-md-4">
                        <label class="form-label fw-medium small">Display Order</label>
                        {{ form.order }}
                        {% if form.order.errors %}<div class="text-danger small mt-1">{{ form.order.errors.0 }}</div>{% endif %}
                        <div class="form-text small">Lower numbers appear first.</div>
                    </div>
                    <div class="col-md-8 d-flex align-items-end pb-1">
                        <div class="form-check">
                            {{ form.is_preview }}
                            <label class="form-check-label fw-medium small" for="{{ form.is_preview.id_for_label }}">Allow Free Preview</label>
                            <div class="form-text small">Non-enrolled visitors can view this lesson</div>
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <!-- Lesson Content -->
        <div class="card border-0 shadow-sm rounded-4 mb-4">
            <div class="card-body p-4">
                <div class="lf-section"><i class="bi bi-file-richtext"></i>Lesson Content</div>
                <label class="form-label fw-medium small">Content / Notes</label>
                {{ form.content }}
                {% if form.content.errors %}<div class="text-danger small mt-1">{{ form.content.errors.0 }}</div>{% endif %}
                <div class="form-text small">Supports plain text. Shown below the lesson video.</div>
            </div>
        </div>

        <!-- Media -->
        <div class="card border-0 shadow-sm rounded-4 mb-4">
            <div class="card-body p-4">
                <div class="lf-section"><i class="bi bi-play-btn"></i>Media &amp; Files</div>
                <div class="row g-3">
                    <div class="col-md-6">
                        <label class="form-label fw-medium small">Video URL <small class="text-muted fw-normal">(YouTube/Vimeo)</small></label>
                        {{ form.video_url }}
                        {% if form.video_url.errors %}<div class="text-danger small mt-1">{{ form.video_url.errors.0 }}</div>{% endif %}
                    </div>
                    <div class="col-md-6">
                        <label class="form-label fw-medium small">Upload Video File</label>
                        {{ form.video_file }}
                        {% if form.video_file.errors %}<div class="text-danger small mt-1">{{ form.video_file.errors.0 }}</div>{% endif %}
                    </div>
                    <div class="col-12">
                        <label class="form-label fw-medium small">Attachment <small class="text-muted fw-normal">(PDF, slides, etc.)</small></label>
                        {{ form.attachment }}
                        {% if form.attachment.errors %}<div class="text-danger small mt-1">{{ form.attachment.errors.0 }}</div>{% endif %}
                    </div>
                </div>
            </div>
        </div>

        <!-- Action buttons -->
        <div class="d-flex gap-2">
            <button type="submit" class="btn btn-primary px-4 fw-semibold">
                <i class="bi bi-check-circle me-2"></i>{{ action|default:"Add" }} Lesson
            </button>
            <a href="{% url 'courses:manage_course' pk=module.course.pk %}" class="btn btn-outline-secondary px-4">Cancel</a>
        </div>
    </div>

    <!-- ── Right: meeting sidebar ────────────────── -->
    <div class="col-lg-4">

        <!-- Online Meeting -->
        <div class="card border-0 shadow-sm rounded-4 mb-4">
            <div class="card-body p-4">
                <div class="lf-section"><i class="bi bi-camera-video"></i>Online Meeting</div>
                <div class="text-muted small mb-3" style="font-size:.78rem;">
                    Zoom, Google Meet, or Microsoft Teams
                </div>
                <div class="d-flex flex-column gap-3">
                    <div>
                        <label class="form-label fw-medium small">Meeting Link</label>
                        {{ form.meeting_link }}
                        {% if form.meeting_link.errors %}<div class="text-danger small mt-1">{{ form.meeting_link.errors.0 }}</div>{% endif %}
                        <div class="form-text small">Paste your invite link here.</div>
                    </div>
                    <div>
                        <label class="form-label fw-medium small">Meeting ID / User ID</label>
                        {{ form.meeting_id }}
                        {% if form.meeting_id.errors %}<div class="text-danger small mt-1">{{ form.meeting_id.errors.0 }}</div>{% endif %}
                    </div>
                    <div>
                        <label class="form-label fw-medium small">Meeting Password</label>
                        {{ form.meeting_password }}
                        {% if form.meeting_password.errors %}<div class="text-danger small mt-1">{{ form.meeting_password.errors.0 }}</div>{% endif %}
                    </div>
                </div>
            </div>
        </div>

        <!-- Tips -->
        <div class="card border-0 rounded-4" style="background:#eff6ff;">
            <div class="card-body p-4">
                <div class="fw-semibold small text-primary mb-2"><i class="bi bi-lightbulb me-1"></i>Tips</div>
                <ul class="mb-0 ps-3 small text-muted" style="line-height:1.8;">
                    <li>Use a video URL <em>or</em> upload a file, not both.</li>
                    <li>Enable <em>Free Preview</em> for introductory lessons.</li>
                    <li>Set <em>Order 0</em> for the first lesson in a module.</li>
                    <li>Meeting details are only shown to enrolled students.</li>
                </ul>
            </div>
        </div>
    </div>

</div>
</form>
{% endblock %}