shoc-backend/SeaHaven.Services/Implementation/UpliftNotificationMessage.cs

using Data.SeaHavenIndustries;

namespace SeaHaven.Services.Implementation
{
    /// <summary>
    /// Builds uplift notification email content. Shared by the synchronous request path
    /// and the lifecycle sweep so content stays consistent without duplication.
    /// </summary>
    public static class UpliftNotificationMessage
    {
        public static (string Subject, string Body) BuildInitial(Dispatch dispatch, DispatchUpliftRequest req, string vendorName, string frontendBase)
        {
            var dispatchNum = System.Net.WebUtility.HtmlEncode(dispatch.DispatchNumber ?? "");
            var vendor = System.Net.WebUtility.HtmlEncode(vendorName);
            var reason = System.Net.WebUtility.HtmlEncode(req.VendorReason ?? "(no reason provided)");
            var tierText = req.RequiredTier == 2 ? "Tier 2 (Manager approval required)" : "Tier 1";

            var subject = $"[Uplift Request] {dispatch.DispatchNumber} — {vendorName} requests ${req.RequestedNTE:F2} (was ${req.CurrentNTE ?? 0m:F2})";
            var body = $@"
                    <h2>Vendor Uplift Request</h2>
                    <p><strong>Dispatch:</strong> {dispatchNum}</p>
                    <p><strong>Vendor:</strong> {vendor}</p>
                    <table style='border-collapse:collapse;font-family:Arial,sans-serif;'>
                        <tr><td style='padding:4px 10px;'><strong>Current NTE</strong></td><td style='padding:4px 10px;'>${req.CurrentNTE ?? 0m:F2}</td></tr>
                        <tr><td style='padding:4px 10px;'><strong>Requested NTE</strong></td><td style='padding:4px 10px;'>${req.RequestedNTE:F2}</td></tr>
                        <tr><td style='padding:4px 10px;'><strong>Delta</strong></td><td style='padding:4px 10px;'>${(req.RequestedNTE - (req.CurrentNTE ?? 0m)):F2}</td></tr>
                        <tr><td style='padding:4px 10px;'><strong>Required Approval</strong></td><td style='padding:4px 10px;'>{tierText}</td></tr>
                    </table>
                    <h3>Vendor Reason</h3>
                    <p>{reason}</p>
                    {ReviewLink(dispatch, frontendBase)}";
            return (subject, body);
        }

        public static (string Subject, string Body) BuildEscalation(Dispatch dispatch, DispatchUpliftRequest req, string vendorName, string frontendBase)
        {
            var dispatchNum = System.Net.WebUtility.HtmlEncode(dispatch.DispatchNumber ?? "");
            var vendor = System.Net.WebUtility.HtmlEncode(vendorName);
            var tierText = req.RequiredTier == 2 ? "Tier 2 (Manager approval required)" : "Tier 1";

            var subject = $"[Escalation] Uplift request awaiting decision — {dispatch.DispatchNumber} ({vendorName})";
            var body = $@"
                    <h2>Uplift Request Escalation</h2>
                    <p>An uplift request is still awaiting a decision and has passed the escalation threshold.</p>
                    <p><strong>Dispatch:</strong> {dispatchNum}</p>
                    <p><strong>Vendor:</strong> {vendor}</p>
                    <table style='border-collapse:collapse;font-family:Arial,sans-serif;'>
                        <tr><td style='padding:4px 10px;'><strong>Current NTE</strong></td><td style='padding:4px 10px;'>${req.CurrentNTE ?? 0m:F2}</td></tr>
                        <tr><td style='padding:4px 10px;'><strong>Requested NTE</strong></td><td style='padding:4px 10px;'>${req.RequestedNTE:F2}</td></tr>
                        <tr><td style='padding:4px 10px;'><strong>Required Approval</strong></td><td style='padding:4px 10px;'>{tierText}</td></tr>
                    </table>
                    {ReviewLink(dispatch, frontendBase)}";
            return (subject, body);
        }

        private static string ReviewLink(Dispatch dispatch, string frontendBase)
        {
            var link = dispatch.WorkOrderId.HasValue
                ? $"{frontendBase.TrimEnd('/')}/workorders/{dispatch.WorkOrderId.Value}"
                : frontendBase;
            return $"<div style='margin:20px 0;'><a href='{link}' style='display:inline-block;padding:10px 22px;background:#2563eb;color:white;text-decoration:none;border-radius:6px;font-weight:bold;'>Review in SHOC</a></div>";
        }
    }
}