{% extends "base.html" %}
{% block title %}Supervision - Utilisateurs{% endblock %}

{% block content %}
<div class="d-flex justify-content-between align-items-center mb-3">
    <h4 class="mb-0"><i class="bi bi-people"></i> Utilisateurs Amadea</h4>
    <span id="last-update" class="text-muted small"></span>
</div>

<div id="alert-zone"></div>

<!-- Graphique d'activite horaire -->
<div class="card mb-3">
    <div class="card-header d-flex justify-content-between align-items-center">
        <h6 class="mb-0"><i class="bi bi-bar-chart"></i> Utilisateurs actifs par heure</h6>
        <select id="period-select" class="form-select form-select-sm" style="width: auto;">
            <option value="today">Aujourd'hui</option>
            <option value="7days">7 derniers jours</option>
        </select>
    </div>
    <div class="card-body">
        <div style="display: flex; gap: 6px;">
            <div id="chart-yaxis"
                 style="display: flex; flex-direction: column; justify-content: space-between;
                        align-items: flex-end; width: 20px; height: 100px; flex-shrink: 0;">
            </div>
            <div style="flex: 1; min-width: 0;">
                <div id="chart-container"
                     style="height: 100px; display: flex; align-items: flex-end; gap: 3px;">
                </div>
                <div id="chart-labels" style="display: flex; gap: 3px; margin-top: 4px;"></div>
            </div>
        </div>
        <div id="chart-hint" class="d-none mt-2">
            <small class="text-muted"><i class="bi bi-hand-index"></i> Cliquez sur une barre pour voir les utilisateurs de ce jour.</small>
        </div>
        <div id="chart-unavailable" class="d-none">
            <div class="alert alert-info mb-0">
                <i class="bi bi-info-circle"></i>
                Les donnees historiques des jours precedents ne sont pas disponibles (fichiers archives).
            </div>
        </div>
    </div>
</div>

<!-- Tableau utilisateurs -->
<div class="card">
    <div class="card-header">
        <h6 class="mb-0" id="table-title"><i class="bi bi-person-lines-fill"></i> Utilisateurs connectes aujourd'hui</h6>
    </div>
    <div class="card-body p-0">
        <table class="table table-hover mb-0">
            <thead>
                <tr id="table-headers">
                    <th>Utilisateur</th>
                    <th>Statut</th>
                    <th>Derniere action</th>
                    <th>Actions (24h)</th>
                    <th>Depuis</th>
                </tr>
            </thead>
            <tbody id="users-tbody"></tbody>
        </table>
    </div>
</div>
{% endblock %}

{% block scripts %}
<script>
var STATUS_CONFIG = {
    actif:      { badge: 'bg-success',          label: 'ACTIF' },
    inactif:    { badge: 'bg-warning text-dark', label: 'INACTIF' },
    deconnecte: { badge: 'bg-secondary',         label: 'DECONNECTE' },
};

var currentHourly  = [];
var currentPeriod  = 'today';
var selectedBarEl  = null;
var lastTodayUsers = [];

/* --- Graphique CSS pur --- */

function renderYAxis(max) {
    var yaxis = document.getElementById('chart-yaxis');
    yaxis.textContent = '';
    var values = [max, Math.round(max / 2), 0];
    values.forEach(function(v) {
        var lbl = document.createElement('div');
        lbl.style.fontSize   = '0.6rem';
        lbl.style.color      = '#6c757d';
        lbl.style.lineHeight = '1';
        lbl.textContent = v;
        yaxis.appendChild(lbl);
    });
}

function renderChart(data, options) {
    var container = document.getElementById('chart-container');
    var labelsEl  = document.getElementById('chart-labels');
    var unavail   = document.getElementById('chart-unavailable');

    container.style.display = 'flex';
    labelsEl.style.display  = 'flex';
    unavail.classList.add('d-none');
    container.textContent = '';
    labelsEl.textContent  = '';
    selectedBarEl = null;

    if (!data || data.length === 0) {
        renderYAxis(0);
        var msg = document.createElement('span');
        msg.className   = 'text-muted small';
        msg.textContent = 'Aucune donnee disponible.';
        container.appendChild(msg);
        return;
    }

    var max = 1;
    data.forEach(function(d) { if ((d.count || 0) > max) max = d.count; });
    renderYAxis(max);

    data.forEach(function(item) {
        var count     = item.count || 0;
        var heightPct = count > 0 ? Math.max((count / max) * 100, 6) : 0;

        var bar = document.createElement('div');
        bar.style.flex         = '1';
        bar.style.minWidth     = '14px';
        bar.style.height       = heightPct + '%';
        bar.style.background   = '#0d6efd';
        bar.style.borderRadius = '3px 3px 0 0';
        bar.style.opacity      = count > 0 ? '1' : '0.15';
        bar.style.transition   = 'height 0.3s';
        bar.title = item.hour !== undefined
            ? item.hour + 'h : ' + count + ' utilisateur(s)'
            : item.date + ' : ' + count + ' utilisateur(s)';

        if (options && options.onBarClick && item.date !== undefined) {
            bar.style.cursor = 'pointer';
            (function(capturedItem, capturedBar) {
                capturedBar.addEventListener('click', function() {
                    if (selectedBarEl) {
                        selectedBarEl.style.background = '#0d6efd';
                        selectedBarEl.style.outline    = '';
                    }
                    capturedBar.style.background = '#0a58ca';
                    capturedBar.style.outline    = '2px solid #0a3fa8';
                    selectedBarEl = capturedBar;
                    options.onBarClick(capturedItem);
                });
            })(item, bar);
        }

        container.appendChild(bar);

        var lbl = document.createElement('div');
        lbl.style.flex      = '1';
        lbl.style.minWidth  = '14px';
        lbl.style.textAlign = 'center';
        lbl.style.fontSize  = '0.6rem';
        lbl.style.color     = '#6c757d';
        lbl.style.overflow  = 'hidden';
        if (item.hour !== undefined) {
            lbl.textContent = item.hour % 3 === 0 ? item.hour + 'h' : '';
        } else {
            var d = new Date(item.date);
            lbl.textContent = d.getUTCDate() + '/' + (d.getUTCMonth() + 1);
        }
        labelsEl.appendChild(lbl);
    });
}

function renderWeekly(weekly) {
    var unavail   = document.getElementById('chart-unavailable');
    var container = document.getElementById('chart-container');
    var labelsEl  = document.getElementById('chart-labels');
    var hint      = document.getElementById('chart-hint');

    var allNull = weekly.every(function(d) { return d.count === null; });
    if (allNull) {
        container.style.display = 'none';
        labelsEl.style.display  = 'none';
        hint.classList.add('d-none');
        document.getElementById('chart-yaxis').textContent = '';
        unavail.classList.remove('d-none');
        return;
    }

    hint.classList.remove('d-none');
    renderChart(
        weekly.map(function(d) {
            return { date: d.date, count: d.count === null ? 0 : d.count };
        }),
        {
            onBarClick: function(item) {
                loadDayUsers(item.date);
            }
        }
    );
}

/* --- Tableau --- */

function setTableMode(mode, dateLabel) {
    var title  = document.getElementById('table-title');
    var thead  = document.getElementById('table-headers');
    if (mode === 'today') {
        title.innerHTML  = '<i class="bi bi-person-lines-fill"></i> Utilisateurs connectes aujourd\'hui';
        thead.innerHTML  = '<th>Utilisateur</th><th>Statut</th><th>Derniere action</th><th>Actions (24h)</th><th>Depuis</th>';
    } else {
        title.innerHTML  = '<i class="bi bi-person-lines-fill"></i> Utilisateurs &mdash; ' + (dateLabel || '');
        thead.innerHTML  = '<th>Utilisateur</th><th>Derniere utilisation</th><th>Actions (jour)</th><th>Duree de presence</th>';
    }
}

function renderTable(users) {
    var tbody = document.getElementById('users-tbody');
    tbody.textContent = '';

    if (!users || users.length === 0) {
        var tr = document.createElement('tr');
        var td = document.createElement('td');
        td.colSpan   = 5;
        td.className = 'text-center text-muted py-3';
        td.textContent = "Aucun utilisateur detecte aujourd'hui.";
        tr.appendChild(td);
        tbody.appendChild(tr);
        return;
    }

    users.forEach(function(u) {
        var sc = STATUS_CONFIG[u.status] || { badge: 'bg-secondary', label: (u.status || '').toUpperCase() };
        var tr = document.createElement('tr');

        var tdUser = document.createElement('td');
        var strong = document.createElement('strong');
        strong.textContent = u.login || '';
        tdUser.appendChild(strong);
        tr.appendChild(tdUser);

        var tdStatus = document.createElement('td');
        var badge    = document.createElement('span');
        badge.className   = 'badge ' + sc.badge;
        badge.textContent = sc.label;
        tdStatus.appendChild(badge);
        tr.appendChild(tdStatus);

        var tdAction = document.createElement('td');
        tdAction.textContent = u.last_action_time || '\u2014';
        if (u.last_action_label) {
            var small = document.createElement('small');
            small.className   = 'text-muted d-block';
            small.textContent = u.last_action_label;
            tdAction.appendChild(small);
        }
        tr.appendChild(tdAction);

        var tdCount = document.createElement('td');
        tdCount.textContent = String(u.action_count_24h || 0);
        tr.appendChild(tdCount);

        var tdSince = document.createElement('td');
        tdSince.textContent = u.connected_since || '\u2014';
        tr.appendChild(tdSince);

        tbody.appendChild(tr);
    });
}

function renderDayTable(users, dateStr) {
    setTableMode('day', dateStr);
    var tbody = document.getElementById('users-tbody');
    tbody.textContent = '';

    if (!users || users.length === 0) {
        var tr = document.createElement('tr');
        var td = document.createElement('td');
        td.colSpan   = 4;
        td.className = 'text-center text-muted py-3';
        td.textContent = 'Aucun utilisateur detecte ce jour.';
        tr.appendChild(td);
        tbody.appendChild(tr);
        return;
    }

    users.forEach(function(u) {
        var tr = document.createElement('tr');

        var tdUser = document.createElement('td');
        var strong = document.createElement('strong');
        strong.textContent = u.login || '';
        tdUser.appendChild(strong);
        tr.appendChild(tdUser);

        var tdAction = document.createElement('td');
        tdAction.textContent = u.last_action_time || '\u2014';
        if (u.last_action_label) {
            var small = document.createElement('small');
            small.className   = 'text-muted d-block';
            small.textContent = u.last_action_label;
            tdAction.appendChild(small);
        }
        tr.appendChild(tdAction);

        var tdCount = document.createElement('td');
        tdCount.textContent = String(u.action_count || 0);
        tr.appendChild(tdCount);

        var tdDuration = document.createElement('td');
        tdDuration.textContent = u.duration || '\u2014';
        tr.appendChild(tdDuration);

        tbody.appendChild(tr);
    });
}

function loadDayUsers(date) {
    fetch('/api/users/day/' + date)
        .then(function(r) { return r.json(); })
        .then(function(data) {
            if (data.error) { showAlert('warning', data.error); return; }
            clearAlert();
            renderDayTable(data.users || [], date);
        })
        .catch(function() {});
}

/* --- Alertes --- */

function showAlert(type, message) {
    var zone = document.getElementById('alert-zone');
    zone.textContent = '';
    var div  = document.createElement('div');
    div.className = 'alert alert-' + type;
    var icon = document.createElement('i');
    icon.className = 'bi bi-exclamation-triangle me-1';
    div.appendChild(icon);
    div.appendChild(document.createTextNode(message));
    zone.appendChild(div);
}

function clearAlert() {
    document.getElementById('alert-zone').textContent = '';
}

/* --- Refresh --- */

function refreshUsers() {
    fetch('/api/users')
        .then(function(r) { return r.json(); })
        .then(function(data) {
            if (data.error) {
                showAlert('warning', data.error);
                if (currentPeriod === 'today') { renderTable([]); renderChart([]); }
                return;
            }
            if (data.no_files) {
                showAlert('info', "Aucun log disponible pour aujourd'hui.");
                if (currentPeriod === 'today') { renderTable([]); renderChart([]); }
                return;
            }
            clearAlert();
            lastTodayUsers = data.users || [];
            currentHourly  = data.hourly || [];
            if (currentPeriod === 'today') {
                setTableMode('today');
                renderTable(lastTodayUsers);
                renderChart(currentHourly);
            }
            document.getElementById('last-update').textContent =
                'Mis a jour : ' + new Date().toLocaleTimeString('fr-FR');
        })
        .catch(function() {});
}

document.getElementById('period-select').addEventListener('change', function() {
    currentPeriod = this.value;
    var hint = document.getElementById('chart-hint');
    if (currentPeriod === 'today') {
        hint.classList.add('d-none');
        document.getElementById('chart-container').style.display = 'flex';
        document.getElementById('chart-labels').style.display    = 'flex';
        document.getElementById('chart-unavailable').classList.add('d-none');
        setTableMode('today');
        renderTable(lastTodayUsers);
        renderChart(currentHourly);
    } else {
        fetch('/api/users/activity/weekly')
            .then(function(r) { return r.json(); })
            .then(function(data) { renderWeekly(data.weekly || []); })
            .catch(function() {});
    }
});

refreshUsers();
setInterval(refreshUsers, 30000);
</script>
{% endblock %}