{% extends "base.html" %}
{% block title %}Timetable{% endblock %}
{% block nav_teacher_timetable %}active{% endblock %}

{% block content %}
<div class="page-header">
    <div>
        <h2><i class="fa-solid fa-calendar-days me-2"></i>Timetable</h2>
        <p class="text-muted mb-0">Weekly schedule for your programs</p>
    </div>
    {% if can_manage %}
    <a href="{% url 'portal:teacher_timetable_add' %}" class="btn btn-primary">
        <i class="fa-solid fa-plus me-1"></i> Add Entry
    </a>
    {% endif %}
</div>

<!-- Filters -->
<form method="get" class="portal-card mb-4">
    <div class="portal-card-body">
        <div class="row g-3 align-items-end">
            {% if programs.count > 1 %}
            <div class="col-md-3">
                <label class="form-label small fw-semibold">Program</label>
                <select name="program" class="form-select form-select-sm">
                    <option value="">All Programs</option>
                    {% for prog in programs %}
                    <option value="{{ prog.pk }}"
                        {% if current_program == prog.pk|stringformat:"s" %}selected{% endif %}>
                        {{ prog.name }}
                    </option>
                    {% endfor %}
                </select>
            </div>
            {% endif %}
            <div class="col-md-3">
                <label class="form-label small fw-semibold">Year Group</label>
                <select name="year" class="form-select form-select-sm">
                    <option value="">All Years</option>
                    {% for val, label in year_choices %}
                    <option value="{{ val }}" {% if current_year == val|stringformat:"s" %}selected{% endif %}>
                        {{ label }}
                    </option>
                    {% endfor %}
                </select>
            </div>
            <div class="col-md-3">
                <label class="form-label small fw-semibold">Term</label>
                <select name="term" class="form-select form-select-sm">
                    <option value="">All Terms</option>
                    {% for val, label in term_choices %}
                    <option value="{{ val }}" {% if current_term == val %}selected{% endif %}>{{ label }}</option>
                    {% endfor %}
                </select>
            </div>
            <div class="col-md-2">
                <label class="form-label small fw-semibold">Academic Year</label>
                <input type="text" name="academic_year" class="form-control form-control-sm"
                       placeholder="e.g. 2025/2026" value="{{ current_academic_year }}">
            </div>
            <div class="col-md-1 d-flex gap-1">
                <button type="submit" class="btn btn-primary btn-sm flex-grow-1">
                    <i class="fa-solid fa-filter"></i>
                </button>
                {% if current_term or current_academic_year or current_year or current_program %}
                <a href="{% url 'portal:teacher_timetable' %}" class="btn btn-outline-secondary btn-sm" title="Clear">
                    <i class="fa-solid fa-xmark"></i>
                </a>
                {% endif %}
            </div>
        </div>
    </div>
</form>

{% if program_timetables %}
    {% for pt in program_timetables %}
    <div class="mb-5">
        {% if program_timetables|length > 1 %}
        <h5 class="fw-bold mb-3" style="color: var(--color-primary);">
            <i class="fa-solid fa-layer-group me-2"></i>{{ pt.program.name }}
            <span class="text-muted fw-normal small ms-2">{{ pt.program.get_level_display }}</span>
        </h5>
        {% endif %}

        <div class="accordion" id="ttYearAccordion{{ pt.program.pk }}">
        {% for year_group in pt.groups %}
        {% with yi=forloop.counter %}
        <div class="accordion-item mb-3 border rounded overflow-hidden">
            <h2 class="accordion-header" id="ttYearHead{{ pt.program.pk }}_{{ yi }}">
                <button class="accordion-button fw-semibold{% if not forloop.first %} collapsed{% endif %}"
                        type="button" data-bs-toggle="collapse" data-bs-target="#ttYear{{ pt.program.pk }}_{{ yi }}"
                        aria-expanded="{% if forloop.first %}true{% else %}false{% endif %}"
                        aria-controls="ttYear{{ pt.program.pk }}_{{ yi }}">
                    <i class="fa-solid fa-users me-2"></i>{{ year_group.year_name }}
                </button>
            </h2>
            <div id="ttYear{{ pt.program.pk }}_{{ yi }}"
                 class="accordion-collapse collapse{% if forloop.first %} show{% endif %}"
                 aria-labelledby="ttYearHead{{ pt.program.pk }}_{{ yi }}"
                 data-bs-parent="#ttYearAccordion{{ pt.program.pk }}">
                <div class="accordion-body bg-light">
                    <div class="accordion" id="ttDayAccordion{{ pt.program.pk }}_{{ yi }}">
                    {% for day_group in year_group.days %}
                    <div class="accordion-item">
                        <h2 class="accordion-header" id="ttDayHead{{ pt.program.pk }}_{{ yi }}_{{ forloop.counter }}">
                            <button class="accordion-button{% if not forloop.first %} collapsed{% endif %}"
                                    type="button" data-bs-toggle="collapse"
                                    data-bs-target="#ttDay{{ pt.program.pk }}_{{ yi }}_{{ forloop.counter }}"
                                    aria-expanded="{% if forloop.first %}true{% else %}false{% endif %}"
                                    aria-controls="ttDay{{ pt.program.pk }}_{{ yi }}_{{ forloop.counter }}">
                                <i class="fa-solid fa-calendar-day me-2 text-muted"></i>
                                <span class="fw-semibold">{{ day_group.day_name }}</span>
                                <span class="badge bg-secondary ms-2">{{ day_group.entries|length }} slot{{ day_group.entries|length|pluralize }}</span>
                            </button>
                        </h2>
                        <div id="ttDay{{ pt.program.pk }}_{{ yi }}_{{ forloop.counter }}"
                             class="accordion-collapse collapse{% if forloop.first %} show{% endif %}"
                             data-bs-parent="#ttDayAccordion{{ pt.program.pk }}_{{ yi }}">
                            <div class="accordion-body p-0">
                                {% for entry in day_group.entries %}
                                <div class="d-flex align-items-center gap-3 px-3 py-3
                                    {% if not forloop.last %}border-bottom{% endif %}">
                                    <div class="text-center flex-shrink-0" style="min-width:80px;">
                                        <div class="fw-bold text-primary" style="font-size:0.9rem;">
                                            {{ entry.start_time|time:"H:i" }}
                                        </div>
                                        <div class="text-muted" style="font-size:0.75rem;">
                                            {{ entry.end_time|time:"H:i" }}
                                        </div>
                                    </div>
                                    <div style="width:3px;height:40px;background:var(--color-secondary);border-radius:2px;flex-shrink:0;"></div>
                                    <div class="flex-grow-1">
                                        <div class="fw-semibold">{{ entry.display_name }}</div>
                                        {% if entry.venue %}
                                        <div class="text-muted small">
                                            <i class="fa-solid fa-location-dot me-1"></i>{{ entry.venue }}
                                        </div>
                                        {% endif %}
                                    </div>
                                    <div class="text-muted small text-end">
                                        {{ entry.get_term_display }}<br>{{ entry.academic_year }}
                                    </div>
                                    <div class="d-flex gap-1 flex-shrink-0">
                                        <a href="{% url 'portal:teacher_timetable_edit' entry.pk %}"
                                           class="btn btn-xs btn-outline-secondary" title="Edit">
                                            <i class="fa-solid fa-pen"></i>
                                        </a>
                                        <a href="{% url 'portal:teacher_timetable_delete' entry.pk %}"
                                           class="btn btn-xs btn-outline-danger" title="Delete">
                                            <i class="fa-solid fa-trash"></i>
                                        </a>
                                    </div>
                                </div>
                                {% endfor %}
                            </div>
                        </div>
                    </div>
                    {% endfor %}
                    </div>
                </div>
            </div>
        </div>
        {% endwith %}
        {% endfor %}
        </div>
    </div>
    {% endfor %}
{% else %}
<div class="portal-card">
    <div class="portal-card-body text-center py-5 text-muted">
        <i class="fa-solid fa-calendar-xmark fa-2x mb-3 d-block"></i>
        <p class="mb-1">No timetable entries found.</p>
        <p class="small">Timetable will appear here once it is set up by the admin.</p>
    </div>
</div>
{% endif %}
{% endblock %}