{% extends "base.html" %}
{% load i18n static review_extras %}

{% block head %}
    <link rel="stylesheet" href="{% review_static 'tcms_review/css/review.css' %}">
    <link rel="stylesheet" href="{% review_static 'tcms_review/vendor/c3.min.css' %}">
    <script src="{% review_static 'tcms_review/vendor/d3.min.js' %}"></script>
    <script src="{% review_static 'tcms_review/vendor/c3.min.js' %}"></script>
    <script src="{% review_static 'tcms_review/js/charts.js' %}" defer></script>
{% endblock %}

{% block title %}{% trans "Review statistics" %}{% endblock %}
{% block page_id %}page-review-stats{% endblock %}

{% block contents %}
<div class="container-fluid container-cards-pf">

    <ol class="breadcrumb">
        <li><a href="{% url 'core-views-index' %}">{% trans "Dashboard" %}</a></li>
        <li><a href="{% url 'review-list' %}">{% trans "Review requests" %}</a></li>
        <li class="active">{% trans "Statistics" %}</li>
    </ol>

    {# KPI strip — one card per key metric #}
    <div class="card-pf">
        <div class="card-pf-heading">
            <h2 class="card-pf-title">
                <i class="fa fa-tachometer" aria-hidden="true"></i>
                {% trans "KPI overview" %}
            </h2>
        </div>
        <div class="card-pf-body">
            <div class="review-aggregate" role="group" aria-label="{% trans 'Review KPIs' %}">
                <div class="aggregate-status-pf">
                    <div class="aggregate-status-pf-title">{% trans "Open requests" %}</div>
                    <div class="aggregate-status-pf-count">{{ open_requests }}</div>
                </div>
                <div class="aggregate-status-pf">
                    <div class="aggregate-status-pf-title">{% trans "Overdue" %}</div>
                    <div class="aggregate-status-pf-count {% if overdue_requests %}text-danger{% endif %}">
                        {{ overdue_requests }}
                    </div>
                </div>
                <div class="aggregate-status-pf">
                    <div class="aggregate-status-pf-title">{% trans "Approval rate" %}</div>
                    <div class="aggregate-status-pf-count">{{ approval_rate|floatformat:0 }}%</div>
                </div>
                <div class="aggregate-status-pf">
                    <div class="aggregate-status-pf-title">{% trans "New (30d)" %}</div>
                    <div class="aggregate-status-pf-count">{{ requests_last_30d }}</div>
                </div>
                <div class="aggregate-status-pf">
                    <div class="aggregate-status-pf-title">{% trans "Closed (30d)" %}</div>
                    <div class="aggregate-status-pf-count">{{ closed_last_30d }}</div>
                </div>
                <div class="aggregate-status-pf">
                    <div class="aggregate-status-pf-title">{% trans "Votes (30d)" %}</div>
                    <div class="aggregate-status-pf-count">{{ votes_last_30d }}</div>
                </div>
            </div>
        </div>
    </div>

    {# Review time overview #}
    <div class="card-pf">
        <div class="card-pf-heading">
            <h2 class="card-pf-title">
                <i class="fa fa-clock-o" aria-hidden="true"></i>
                {% trans "Review time overview" %}
            </h2>
        </div>
        <div class="card-pf-body">
            <div class="review-aggregate" role="group" aria-label="{% trans 'Review time KPIs' %}">
                <div class="aggregate-status-pf">
                    <div class="aggregate-status-pf-title">{% trans "Avg. time to decision" %}</div>
                    <div class="aggregate-status-pf-count">
                        {{ avg_time_to_decision|default:"—" }}
                    </div>
                </div>
                <div class="aggregate-status-pf">
                    <div class="aggregate-status-pf-title">{% trans "Median time to decision" %}</div>
                    <div class="aggregate-status-pf-count">
                        {{ median_time_to_decision|default:"—" }}
                    </div>
                </div>
                <div class="aggregate-status-pf">
                    <div class="aggregate-status-pf-title">{% trans "Fastest" %}</div>
                    <div class="aggregate-status-pf-count text-success">
                        {{ fastest_decision|default:"—" }}
                    </div>
                </div>
                <div class="aggregate-status-pf">
                    <div class="aggregate-status-pf-title">{% trans "Slowest" %}</div>
                    <div class="aggregate-status-pf-count text-warning">
                        {{ slowest_decision|default:"—" }}
                    </div>
                </div>
            </div>
        </div>
    </div>

    {# Aggregate counts #}
    <div class="card-pf">
        <div class="card-pf-heading">
            <h2 class="card-pf-title">
                <i class="fa fa-bar-chart" aria-hidden="true"></i>
                {% trans "Totals" %}
            </h2>
        </div>
        <div class="card-pf-body">
            <div class="review-aggregate" role="group">
                <div class="aggregate-status-pf">
                    <div class="aggregate-status-pf-title">{% trans "Total requests" %}</div>
                    <div class="aggregate-status-pf-count">{{ total_requests }}</div>
                </div>
                <div class="aggregate-status-pf">
                    <div class="aggregate-status-pf-title">{% trans "Total votes" %}</div>
                    <div class="aggregate-status-pf-count">{{ total_votes }}</div>
                </div>
                <div class="aggregate-status-pf">
                    <div class="aggregate-status-pf-title">{% trans "Cases reviewed" %}</div>
                    <div class="aggregate-status-pf-count">{{ total_items }}</div>
                </div>
            </div>
        </div>
    </div>

    {# Chart payload (consumed by charts.js) #}
    <script type="application/json" id="review-stats-payload">{{ chart_payload_json|safe }}</script>

    {# Charts #}
    <div class="row">
        <div class="col-md-6">
            <div class="card-pf">
                <div class="card-pf-heading">
                    <h3 class="card-pf-title">{% trans "Requests by state" %}</h3>
                </div>
                <div class="card-pf-body">
                    <div id="review-chart-state" style="height:280px;"></div>
                </div>
            </div>
        </div>
        <div class="col-md-6">
            <div class="card-pf">
                <div class="card-pf-heading">
                    <h3 class="card-pf-title">{% trans "Activity (last 30 days)" %}</h3>
                </div>
                <div class="card-pf-body">
                    <div id="review-chart-timeline" style="height:280px;"></div>
                </div>
            </div>
        </div>
    </div>

    <div class="row">
        <div class="col-md-6">
            <div class="card-pf">
                <div class="card-pf-heading">
                    <h3 class="card-pf-title">{% trans "Top reviewers" %}</h3>
                </div>
                <div class="card-pf-body">
                    <div id="review-chart-reviewers" style="height:280px;"></div>
                    {% if not top_reviewers %}
                    <p class="text-muted">{% trans "No votes cast yet." %}</p>
                    {% endif %}
                </div>
            </div>
        </div>
        <div class="col-md-6">
            <div class="card-pf">
                <div class="card-pf-heading">
                    <h3 class="card-pf-title">{% trans "Top requesters" %}</h3>
                </div>
                <div class="card-pf-body">
                    <div id="review-chart-requesters" style="height:280px;"></div>
                    {% if not top_requesters %}
                    <p class="text-muted">{% trans "No review requests yet." %}</p>
                    {% endif %}
                </div>
            </div>
        </div>
    </div>

    {# Detail tables (kept for copy/paste and a11y fallback) #}
    <div class="row">
        <div class="col-md-6">
            <div class="card-pf">
                <div class="card-pf-heading">
                    <h3 class="card-pf-title">{% trans "Requests by state (table)" %}</h3>
                </div>
                <div class="card-pf-body">
                    <div class="table-responsive">
                        <table class="table" aria-label="{% trans 'Requests by state' %}">
                            <thead><tr><th>{% trans "State" %}</th><th>{% trans "Count" %}</th></tr></thead>
                            <tbody>
                                {% for label, count in by_state.items %}
                                <tr>
                                    <td>{{ label }}</td>
                                    <td>{{ count }}</td>
                                </tr>
                                {% endfor %}
                            </tbody>
                        </table>
                    </div>
                </div>
            </div>
        </div>
        <div class="col-md-6">
            <div class="card-pf">
                <div class="card-pf-heading">
                    <h3 class="card-pf-title">{% trans "Top reviewers (table)" %}</h3>
                </div>
                <div class="card-pf-body">
                    {% if top_reviewers %}
                    <div class="table-responsive">
                        <table class="table" aria-label="{% trans 'Top reviewers' %}">
                            <thead><tr><th>{% trans "Reviewer" %}</th><th>{% trans "Votes cast" %}</th></tr></thead>
                            <tbody>
                                {% for row in top_reviewers %}
                                <tr>
                                    <td>{{ row.reviewer__username }}</td>
                                    <td>{{ row.vote_count }}</td>
                                </tr>
                                {% endfor %}
                            </tbody>
                        </table>
                    </div>
                    {% else %}
                    <p class="text-muted">{% trans "No votes cast yet." %}</p>
                    {% endif %}
                </div>
            </div>
        </div>
    </div>

</div>
{% endblock %}