using Distribution.Models;

namespace Distribution.Features.Stock;

// Shared pagination wrapper
public record PagedResponse<T>(int Page, int PageSize, int Total, List<T> Items);

// Balance
public record StockBalanceResponse(
    Guid ItemId,
    string ItemName,
    Guid LocationId,
    LocationType LocationType,
    decimal Quantity,
    DateTime UpdatedAt,
    string LocationName);

public record StockTotalResponse(
    Guid ItemId,
    string ItemName,
    decimal TotalQuantity,
    List<StockBalanceResponse> Breakdown);

// Movement
public record StockMovementResponse(
    Guid Id,
    Guid ItemId,
    string ItemName,
    Guid? FromLocationId,
    LocationType? FromLocationType,
    Guid? ToLocationId,
    LocationType? ToLocationType,
    decimal Quantity,
    MovementType Type,
    string? ReasonCode,
    Guid? ReferenceId,
    DateTime CreatedAt,
    Guid CreatedBy,
    string? FromLocationName,
    string? ToLocationName);

// Write requests
public record TransferRequest(
    Guid ItemId,
    Guid FromLocationId,
    LocationType FromLocationType,
    Guid ToLocationId,
    LocationType ToLocationType,
    decimal Quantity,
    Guid? ReferenceId);

public record DamageRequest(
    Guid ItemId,
    Guid LocationId,
    LocationType LocationType,
    decimal Quantity,
    string ReasonCode);

public record CustomerReturnRequest(
    Guid ItemId,
    Guid VehicleId,
    decimal Quantity,
    Guid? ReferenceId);

public record AdjustmentRequest(
    Guid ItemId,
    Guid LocationId,
    LocationType LocationType,
    decimal Quantity,
    string ReasonCode,
    // TEMPORARY: required while auth doesn't resolve a logged-in user server-side — see testbug.md #28.
    Guid? AdjustedByUserId = null);

// Movements are an immutable ledger — quantity, locations, and type can never change once recorded
// (the running stock balance is the sum of all movements). Only the free-text reason/note is editable.
public record UpdateMovementReasonRequest(string ReasonCode);