namespace SeaHaven.DataServices.Models;

/// <summary>
/// Server-derived feed scope. <see cref="AccountId"/> null is org-wide;
/// <see cref="DispatcherId"/> null means every dispatcher's work orders.
/// </summary>
public sealed record NotificationFeedScope(int? AccountId, string? DispatcherId);

public sealed class UnassignedWorkOrdersSummary
{
    public int Count { get; init; }
    public DateTime? LatestCreatedAt { get; init; }
}

public sealed class NotificationWorkOrderCandidate
{
    public int Id { get; init; }
    public string? Number { get; init; }
    public DateTime ScheduledDate { get; init; }
}

/// <summary>A bounded slice of candidates plus the unbounded total they were taken from.</summary>
public sealed class NotificationCandidatePage
{
    public int Total { get; init; }
    public IReadOnlyList<NotificationWorkOrderCandidate> Items { get; init; } = Array.Empty<NotificationWorkOrderCandidate>();
}

/// <summary>
/// Server-derived scope for items addressed to one person: <see cref="UserId"/> is the signed-in
/// user from claims and <see cref="AccountId"/> null is org-wide.
/// </summary>
public sealed record NotificationPersonalScope(int? AccountId, string UserId);

/// <summary>An open work order assigned to the user, with when and by whom it was last assigned.</summary>
public sealed class NotificationAssignmentCandidate
{
    public int WorkOrderId { get; init; }
    public string? Number { get; init; }
    public DateTime AssignedAt { get; init; }
    public string? AssignedBy { get; init; }
}

public sealed class NotificationCommentCandidate
{
    public int CommentId { get; init; }
    public int WorkOrderId { get; init; }
    public string? WorkOrderNumber { get; init; }
    public string? AuthorFirstName { get; init; }
    public string? AuthorLastName { get; init; }
    /// <summary>Free-text author for comments with no user (email sync, vendor portal).</summary>
    public string? Commenter { get; init; }
    public string? Text { get; init; }
    public DateTime CreatedAt { get; init; }
}

public sealed class NotificationUpliftDecisionCandidate
{
    public int UpliftId { get; init; }
    public int WorkOrderId { get; init; }
    public string? WorkOrderNumber { get; init; }
    public string Status { get; init; } = "";
    public decimal Amount { get; init; }
    public string? DecisionNote { get; init; }
    public DateTime DecidedAt { get; init; }
}

/// <summary>
/// Per SEV level, the latest work-order creation time that has reached a response-window threshold.
/// The business service computes them; the query only compares creation times.
/// </summary>
public sealed record NotificationSlaCutoffs(DateTime Sev1, DateTime Sev2, DateTime Sev3, DateTime Sev4, DateTime Sev5);

/// <summary>
/// The work-order audit entry that records an SLA breach acknowledgement: who (UserId), when (CreatedAt)
/// and the SEV level whose deadline was missed (NewValue). It is also what keeps the breach out of the feed.
/// </summary>
public static class SlaBreachAcknowledgementAudit
{
    public const string FieldName = "SlaBreachAcknowledged";
}

/// <summary>An open Reactive/Emergency work order with a SEV 1–5 level and a creation time.</summary>
public sealed class NotificationSlaCandidate
{
    public int Id { get; init; }
    public string? Number { get; init; }
    public string Severity { get; init; } = "";
    public DateTime CreatedAt { get; init; }
    /// <summary>A breach of the work order's current severity has already been acknowledged.</summary>
    public bool BreachAcknowledged { get; init; }
}

public sealed class NotificationSlaCandidates
{
    /// <summary>Every work order past half its window but not past the whole window.</summary>
    public IReadOnlyList<NotificationSlaCandidate> AtRisk { get; init; } = Array.Empty<NotificationSlaCandidate>();
    /// <summary>Unacknowledged breaches: the newest slice, plus the unbounded total.</summary>
    public IReadOnlyList<NotificationSlaCandidate> Breached { get; init; } = Array.Empty<NotificationSlaCandidate>();
    public int BreachedTotal { get; init; }
}