{% extends "controlpanel/base.html" %}
{% load static lucide %}

{% block heading %}RosterChief Platform Dashboard{% endblock heading %}
{% block subheading %}Welcome back {{ user.member.first_name }}!{% endblock subheading %}

{% block actions %}
    <a class="btn btn-primary gap-2" href="{% url 'controlpanel:club_create' %}">{% lucide "plus" size=16 %} Create new club</a>
{% endblock actions %}

{% block panel %}
    {% comment %}
        Needs attention first: these are the numbers that are supposed to be zero. A club with
        no current season cannot take a signup or schedule a match — and it fails silently,
        nothing errors — while an admin without a second factor is locked out of their own
        club. Both are work queues, not statistics. The vanity totals sit further down.
    {% endcomment %}
    <div class="mb-6 grid gap-4 sm:grid-cols-2 lg:grid-cols-4">
        <div class="card bg-base-100 shadow {% if attention.clubs_without_season %}border-l-4 border-warning{% endif %}">
            <div class="card-body p-4">
                <div class="flex items-center gap-2 text-sm opacity-70">{% lucide "calendar-x" size=16 %} No current season</div>
                <div class="text-3xl font-bold tabular-nums">{{ attention.clubs_without_season }}</div>
                <div class="text-xs opacity-60">Clubs that cannot take signups</div>
            </div>
        </div>
        <div class="card bg-base-100 shadow {% if attention.dormant_clubs %}border-l-4 border-warning{% endif %}">
            <div class="card-body p-4">
                <div class="flex items-center gap-2 text-sm opacity-70">{% lucide "moon-star" size=16 %} Dormant</div>
                <div class="text-3xl font-bold tabular-nums">{{ attention.dormant_clubs }}</div>
                <div class="text-xs opacity-60">Nothing scheduled in 30 days</div>
            </div>
        </div>
        <div class="card bg-base-100 shadow {% if attention.admins_pending_mfa %}border-l-4 border-error{% endif %}">
            <div class="card-body p-4">
                <div class="flex items-center gap-2 text-sm opacity-70">{% lucide "shield-alert" size=16 %} MFA pending</div>
                <div class="text-3xl font-bold tabular-nums">{{ attention.admins_pending_mfa }}</div>
                <div class="text-xs opacity-60">Admins locked out until they enrol</div>
            </div>
        </div>
        <div class="card bg-base-100 shadow {% if attention.dues_owed %}border-l-4 border-error{% endif %}">
            <div class="card-body p-4">
                {% comment %}
                    What the CLUBS owe US. Not to be confused with the club-shop money below,
                    which members owe their clubs and is never ours.
                {% endcomment %}
                <div class="flex items-center gap-2 text-sm opacity-70">{% lucide "receipt-euro" size=16 %} Dues owed</div>
                <div class="text-3xl font-bold tabular-nums">€{{ attention.dues_owed|floatformat:2 }}</div>
                <div class="text-xs opacity-60">
                    {{ attention.dues_in_grace }} in grace ·
                    <span class="{% if attention.dues_overdue %}font-semibold text-error{% endif %}">{{ attention.dues_overdue }} overdue</span>
                </div>
            </div>
        </div>
    </div>

    <div class="mb-6 grid gap-4 lg:grid-cols-2">
        <div class="card bg-base-100 shadow">
            <div class="card-body">
                <h2 class="card-title text-base">{% lucide "user-plus" size=18 %} Signups per month</h2>
                <p class="text-sm opacity-70">New members against returning ones, across every club.</p>
                <div class="h-56">
                    <canvas id="signups-chart"></canvas>
                </div>
            </div>
        </div>
        <div class="card bg-base-100 shadow">
            <div class="card-body">
                <h2 class="card-title text-base">{% lucide "receipt-euro" size=18 %} Platform dues per month</h2>
                <p class="text-sm opacity-70">What clubs paid us. Club-shop money is theirs, not ours.</p>
                <div class="h-56">
                    <canvas id="revenue-chart"></canvas>
                </div>
            </div>
        </div>
    </div>

    <div class="mb-6 grid gap-4 lg:grid-cols-2">
        <div class="card bg-base-100 shadow">
            <div class="card-body">
                <h2 class="card-title text-base">{% lucide "milestone" size=18 %} Onboarding</h2>
                <p class="text-sm opacity-70">Where clubs stall. One with no team or no events is a shell.</p>
                <div class="mt-2 space-y-3">
                    {% for step in funnel %}
                        <div>
                            <div class="mb-1 flex items-center justify-between text-sm">
                                <span class="flex items-center gap-2">{% lucide step.icon size=14 %} {{ step.label }}</span>
                                <span class="font-semibold tabular-nums">{{ step.count }}</span>
                            </div>
                            <progress class="progress progress-primary w-full" value="{{ step.count }}" max="{{ funnel.0.count }}"></progress>
                        </div>
                    {% endfor %}
                </div>
            </div>
        </div>

        <div class="card bg-base-100 shadow">
            <div class="card-body">
                <div class="flex items-center justify-between">
                    <h2 class="card-title text-base">{% lucide "toggle-right" size=18 %} Feature adoption</h2>
                    <a class="btn btn-ghost btn-xs" href="{% url 'controlpanel:features' %}">Manage</a>
                </div>
                <div class="overflow-x-auto">
                    <table class="table table-sm">
                        <tbody>
                            {% for flag in flags %}
                                <tr>
                                    <td class="font-mono font-medium">{{ flag.name }}</td>
                                    <td class="text-right">
                                        {% if flag.overridden %}
                                            {# `everyone` overrides club targeting, so the club count says nothing here. #}
                                            <span class="badge badge-sm {% if flag.everyone %}badge-success{% else %}badge-error{% endif %}">
                                                {% if flag.everyone %}On for all{% else %}Off everywhere{% endif %}
                                            </span>
                                        {% else %}
                                            <span class="tabular-nums">{{ flag.clubs }} / {{ totals.clubs }} clubs</span>
                                        {% endif %}
                                    </td>
                                </tr>
                            {% empty %}
                                <tr>
                                    <td class="text-center opacity-60">No features yet.</td>
                                </tr>
                            {% endfor %}
                        </tbody>
                    </table>
                </div>
            </div>
        </div>
    </div>

    <div class="stats mb-6 w-full bg-base-100 shadow">
        <div class="stat">
            <div class="stat-title">Active clubs</div>
            <div class="stat-value">{{ totals.clubs }}</div>
        </div>
        <div class="stat">
            <div class="stat-title">Archived</div>
            <div class="stat-value">{{ totals.archived_clubs }}</div>
        </div>
        <div class="stat">
            <div class="stat-title">Members</div>
            <div class="stat-value">{{ totals.members }}</div>
            <div class="stat-desc">{{ attention.members_without_login }} without a login</div>
        </div>
        <div class="stat">
            <div class="stat-title">Club admins</div>
            <div class="stat-value">{{ totals.admins }}</div>
        </div>
        <div class="stat">
            <div class="stat-title">Not billed</div>
            <div class="stat-value {% if attention.clubs_unbilled %}text-warning{% endif %}">{{ attention.clubs_unbilled }}</div>
            <div class="stat-desc">Clubs on no tier</div>
        </div>
    </div>

    <div class="card bg-base-100 shadow">
        <div class="card-body">
            <h2 class="card-title">Clubs</h2>
            {% include "controlpanel/_club_health_table.html" %}
        </div>
    </div>
{% endblock panel %}

{% block extra_body %}
    {{ charts|json_script:"chart-data" }}
    <script src="{% static 'js/chart.js' %}"></script>
    <script>
        (() => {
            const data = JSON.parse(document.getElementById("chart-data").textContent);

            // Chart.js paints to a canvas, so it cannot inherit daisyUI's colours the way the
            // rest of the page does — they are CSS variables. Read the computed values, and
            // rebuild when the theme attribute changes, or the charts keep the light palette
            // after a switch to dark.
            const css = (name, fallback) => getComputedStyle(document.documentElement).getPropertyValue(name).trim() || fallback;

            const render = () => {
                const ink = css("--color-base-content", "#333");
                const grid = "color-mix(in oklab, " + ink + " 15%, transparent)";

                // Locale-aware, so 1234.5 reads as "€ 1.234,50" rather than "€1,234.5". Two of
                // them: the axis is rounded to keep the labels short, but the tooltip keeps the
                // cents — rounding a euro amount someone is reading off a chart is a lie.
                const axisEuros = new Intl.NumberFormat("nl-BE", {style: "currency", currency: "EUR", maximumFractionDigits: 0});
                const exactEuros = new Intl.NumberFormat("nl-BE", {style: "currency", currency: "EUR", minimumFractionDigits: 2});

                const build = (id, label, series, colour, type, money) =>
                    new Chart(document.getElementById(id), {
                        type,
                        data: {
                            labels: series.map((point) => point.month),
                            datasets: [{label, data: series.map((point) => point.value), borderColor: colour, backgroundColor: colour, tension: 0.3}],
                        },
                        options: {
                            responsive: true,
                            maintainAspectRatio: false,
                            plugins: {
                                legend: {display: false},
                                // The tooltip carries the unit too: an axis in euros and a bare
                                // number on hover reads as two different quantities.
                                tooltip: money ? {callbacks: {label: (item) => exactEuros.format(item.parsed.y)}} : {},
                            },
                            scales: {
                                x: {ticks: {color: ink}, grid: {color: grid}},
                                y: {
                                    beginAtZero: true,
                                    grid: {color: grid},
                                    ticks: {color: ink, precision: 0, callback: money ? (value) => axisEuros.format(value) : undefined},
                                },
                            },
                        },
                    });

                // Stacked, so the bar height stays "signups this month" while the split shows
                // where they came from. New is per club: joining a second club is a new
                // membership there, even for someone who has been on the platform for years.
                const signups = new Chart(document.getElementById("signups-chart"), {
                    type: "bar",
                    data: {
                        labels: data.signups.map((point) => point.month),
                        datasets: [
                            { label: "New", data: data.signups.map((point) => point.new), backgroundColor: css("--color-primary", "#4f46e5") },
                            { label: "Returning", data: data.signups.map((point) => point.returning), backgroundColor: css("--color-accent", "#0ea5e9") },
                        ],
                    },
                    options: {
                        responsive: true,
                        maintainAspectRatio: false,
                        plugins: { legend: { position: "bottom", labels: { color: ink } } },
                        scales: {
                            x: { stacked: true, ticks: { color: ink }, grid: { color: grid } },
                            y: { stacked: true, beginAtZero: true, ticks: { color: ink, precision: 0 }, grid: { color: grid } },
                        },
                    },
                });

                return [signups, build("revenue-chart", "Dues", data.dues, css("--color-accent", "#0ea5e9"), "bar", true)];
            };

            let charts = render();

            // The theme toggle sets data-theme on <html>; "auto" removes it entirely, so watch
            // the attribute rather than listening for a click.
            new MutationObserver(() => {
                charts.forEach((chart) => chart.destroy());
                charts = render();
            }).observe(document.documentElement, {attributes: true, attributeFilter: ["data-theme"]});
        })();
    </script>
{% endblock extra_body %}