@using PowderCoating.Core.Enums
@using PowderCoating.Web.Controllers
@model RevenueDashboardViewModel

@section Styles {
<style>
    [data-bs-theme="dark"] .card-header.bg-white { background-color: var(--bs-card-cap-bg) !important; }
</style>
}

@{
    ViewData["Title"] = "Revenue Dashboard";
}

<div class="container-fluid py-3">
    <div class="d-flex align-items-center justify-content-between mb-3">
        <h4 class="mb-0">
            <i class="bi bi-graph-up-arrow me-2 text-primary"></i>Revenue Dashboard
        </h4>
        <small class="text-muted">Based on active paying companies &amp; plan pricing</small>
    </div>

    @* ── Top KPI cards ── *@
    <div class="row g-3 mb-3">
        <div class="col-6 col-md-3">
            <div class="card border-0 shadow-sm h-100 border-start border-4 border-primary">
                <div class="card-body">
                    <div class="small text-muted mb-1">Monthly Recurring Revenue</div>
                    <div class="fs-3 fw-bold text-primary">@Model.Mrr.ToString("C0")</div>
                    <div class="small text-muted">MRR</div>
                </div>
            </div>
        </div>
        <div class="col-6 col-md-3">
            <div class="card border-0 shadow-sm h-100 border-start border-4 border-success">
                <div class="card-body">
                    <div class="small text-muted mb-1">Annual Recurring Revenue</div>
                    <div class="fs-3 fw-bold text-success">@Model.Arr.ToString("C0")</div>
                    <div class="small text-muted">ARR (MRR × 12)</div>
                </div>
            </div>
        </div>
        <div class="col-6 col-md-3">
            <div class="card border-0 shadow-sm h-100 border-start border-4 border-info">
                <div class="card-body">
                    <div class="small text-muted mb-1">Avg Revenue / Company</div>
                    <div class="fs-3 fw-bold text-info">@Model.AvgRevenuePerCompany.ToString("C0")</div>
                    <div class="small text-muted">ARPC per month</div>
                </div>
            </div>
        </div>
        <div class="col-6 col-md-3">
            <div class="card border-0 shadow-sm h-100 border-start border-4" style="border-color:#6f42c1!important">
                <div class="card-body">
                    <div class="small text-muted mb-1">Stripe-Managed</div>
                    <div class="fs-3 fw-bold" style="color:#6f42c1">@Model.StripeManaged</div>
                    <div class="small text-muted">companies on Stripe billing</div>
                </div>
            </div>
        </div>
    </div>

    <div class="row g-3 mb-3">
        @* ── Company Status Breakdown ── *@
        <div class="col-md-4">
            <div class="card shadow-sm h-100">
                <div class="card-header fw-semibold py-2">Company Status</div>
                <div class="card-body p-0">
                    <table class="table table-sm mb-0">
                        <tbody>
                            <tr>
                                <td><span class="badge bg-success">Active</span></td>
                                <td class="fw-bold">@Model.ActiveCount</td>
                            </tr>
                            <tr>
                                <td><span class="badge bg-warning text-dark">Grace Period</span></td>
                                <td class="fw-bold">@Model.GracePeriodCount</td>
                            </tr>
                            <tr>
                                <td><span class="badge bg-danger">Expired</span></td>
                                <td class="fw-bold">@Model.ExpiredCount</td>
                            </tr>
                            <tr>
                                <td><span class="badge bg-secondary">Canceled / Inactive</span></td>
                                <td class="fw-bold">@Model.CanceledCount</td>
                            </tr>
                            <tr>
                                <td><span class="badge bg-info text-dark">Comped</span></td>
                                <td class="fw-bold">@Model.CompedCount</td>
                            </tr>
                            <tr class="table-light">
                                <td class="fw-semibold">Total</td>
                                <td class="fw-bold">@Model.TotalCompanies</td>
                            </tr>
                        </tbody>
                    </table>
                </div>
            </div>
        </div>

        @* ── Month-over-Month ── *@
        <div class="col-md-4">
            <div class="card shadow-sm h-100">
                <div class="card-header fw-semibold py-2">Month-over-Month</div>
                <div class="card-body">
                    <div class="row text-center g-2">
                        <div class="col-4">
                            <div class="fs-4 fw-bold text-success">+@Model.NewThisMonth</div>
                            <div class="small text-muted">New this month</div>
                        </div>
                        <div class="col-4">
                            <div class="fs-4 fw-bold text-secondary">@Model.NewLastMonth</div>
                            <div class="small text-muted">New last month</div>
                        </div>
                        <div class="col-4">
                            <div class="fs-4 fw-bold text-danger">@Model.ChurnThisMonth</div>
                            <div class="small text-muted">Churn this month</div>
                        </div>
                    </div>
                    <hr class="my-2">
                    <div class="text-center">
                        <div class="fs-5 fw-bold @(Model.NewThisMonth - Model.ChurnThisMonth >= 0 ? "text-success" : "text-danger")">
                            @(Model.NewThisMonth - Model.ChurnThisMonth >= 0 ? "+" : "")@(Model.NewThisMonth - Model.ChurnThisMonth) net
                        </div>
                        <div class="small text-muted">Net company growth this month</div>
                    </div>
                </div>
            </div>
        </div>

        @* ── Plan Distribution ── *@
        <div class="col-md-4">
            <div class="card shadow-sm h-100">
                <div class="card-header fw-semibold py-2">Revenue by Plan</div>
                <div class="card-body p-0">
                    @if (!Model.PlanDistribution.Any())
                    {
                        <div class="p-3 text-muted small">No paying companies on record.</div>
                    }
                    else
                    {
                        <table class="table table-sm mb-0">
                            <thead class="table-light">
                                <tr>
                                    <th>Plan</th>
                                    <th class="text-center">Co.</th>
                                    <th class="text-end">MRR</th>
                                </tr>
                            </thead>
                            <tbody>
                                @foreach (var row in Model.PlanDistribution)
                                {
                                    <tr>
                                        <td class="small">@row.PlanName</td>
                                        <td class="text-center small">@row.CompanyCount</td>
                                        <td class="text-end small fw-semibold">@row.Revenue.ToString("C0")</td>
                                    </tr>
                                }
                            </tbody>
                        </table>
                    }
                </div>
            </div>
        </div>
    </div>

    @* ── MRR Trend Chart ── *@
    <div class="card shadow-sm mb-3">
        <div class="card-header fw-semibold py-2">
            Estimated MRR Trend &mdash; Last 12 Months
            <small class="text-muted fw-normal ms-2">(approximation based on current plan prices × active companies)</small>
        </div>
        <div class="card-body">
            <canvas id="mrrChart" height="80"></canvas>
        </div>
    </div>

    @* ── Subscription Alerts ── *@
    @if (Model.SubscriptionAlerts.Any())
    {
        <div class="card shadow-sm">
            <div class="card-header fw-semibold py-2 text-warning">
                <i class="bi bi-exclamation-triangle me-1"></i>Subscriptions Needing Attention
            </div>
            <div class="table-responsive">
                <table class="table table-sm table-hover mb-0">
                    <thead class="table-light">
                        <tr>
                            <th>Company</th>
                            <th>Plan</th>
                            <th>Status</th>
                            <th>End Date</th>
                            <th>Days</th>
                            <th></th>
                        </tr>
                    </thead>
                    <tbody>
                        @foreach (var alert in Model.SubscriptionAlerts)
                        {
                            var statusClass = alert.Status switch
                            {
                                SubscriptionStatus.GracePeriod => "warning text-dark",
                                SubscriptionStatus.Expired => "danger",
                                _ => "info text-dark"
                            };
                            var daysText = alert.DaysUntilExpiry < 0
                                ? $"{Math.Abs(alert.DaysUntilExpiry)}d overdue"
                                : $"in {alert.DaysUntilExpiry}d";
                            <tr>
                                <td class="small fw-semibold">@alert.CompanyName</td>
                                <td class="small">@alert.PlanName</td>
                                <td><span class="badge bg-@statusClass">@alert.Status</span></td>
                                <td class="small">@Html.Raw(alert.EndDate?.ToString("MM/dd/yyyy") ?? "&mdash;")</td>
                                <td class="small @(alert.DaysUntilExpiry < 0 ? "text-danger" : "text-warning")">@daysText</td>
                                <td>
                                    <a asp-controller="SubscriptionManagement" asp-action="Manage"
                                       asp-route-id="@alert.Id" class="btn btn-outline-secondary btn-sm py-0">Manage</a>
                                </td>
                            </tr>
                        }
                    </tbody>
                </table>
            </div>

            <!-- Mobile card view &mdash; shown on screens < 992px (table-responsive hidden by mobile-cards.css) -->
            <div class="mobile-card-view">
                <div class="mobile-card-list">
                    @foreach (var alert in Model.SubscriptionAlerts)
                    {
                        var alertStatusClass = alert.Status switch
                        {
                            SubscriptionStatus.GracePeriod => "warning text-dark",
                            SubscriptionStatus.Expired => "danger",
                            _ => "info text-dark"
                        };
                        var alertDaysText = alert.DaysUntilExpiry < 0
                            ? $"{Math.Abs(alert.DaysUntilExpiry)}d overdue"
                            : $"in {alert.DaysUntilExpiry}d";
                        <a href="@Url.Action("Manage", "SubscriptionManagement", new { id = alert.Id })" class="mobile-data-card text-decoration-none">
                            <div class="mobile-card-header">
                                <div class="mobile-card-icon bg-warning"><i class="bi bi-exclamation-triangle"></i></div>
                                <div class="mobile-card-title">
                                    <h6>@alert.CompanyName</h6>
                                    <small class="text-muted">@alert.PlanName</small>
                                </div>
                                <span class="badge bg-@alertStatusClass">@alert.Status</span>
                            </div>
                            <div class="mobile-card-body">
                                <div class="mobile-card-row">
                                    <span class="mobile-card-label">End Date</span>
                                    <span class="mobile-card-value">@Html.Raw(alert.EndDate?.ToString("MM/dd/yyyy") ?? "&mdash;")</span>
                                </div>
                                <div class="mobile-card-row">
                                    <span class="mobile-card-label">Days</span>
                                    <span class="mobile-card-value @(alert.DaysUntilExpiry < 0 ? "text-danger" : "text-warning")">@alertDaysText</span>
                                </div>
                            </div>
                            <div class="mobile-card-footer">
                                <span class="btn btn-sm btn-outline-secondary">Manage →</span>
                            </div>
                        </a>
                    }
                </div>
            </div>
        </div>
    }
</div>

@section Scripts {
<script src="~/lib/chartjs/chart.umd.min.js"></script>
<script>
(function () {
    const labels = @Html.Raw(System.Text.Json.JsonSerializer.Serialize(Model.TrendMonths.Select(t => t.Month)));
    const mrrData = @Html.Raw(System.Text.Json.JsonSerializer.Serialize(Model.TrendMonths.Select(t => t.Mrr)));

    new Chart(document.getElementById('mrrChart'), {
        type: 'line',
        data: {
            labels,
            datasets: [{
                label: 'MRR ($)',
                data: mrrData,
                borderColor: '#0d6efd',
                backgroundColor: 'rgba(13,110,253,0.1)',
                fill: true,
                tension: 0.3,
                pointRadius: 4,
                pointHoverRadius: 6
            }]
        },
        options: {
            responsive: true,
            plugins: {
                legend: { display: false },
                tooltip: {
                    callbacks: {
                        label: ctx => '$' + ctx.parsed.y.toLocaleString('en-US', { minimumFractionDigits: 0 })
                    }
                }
            },
            scales: {
                y: {
                    beginAtZero: true,
                    ticks: {
                        callback: v => '$' + v.toLocaleString()
                    }
                }
            }
        }
    });
})();
</script>
}