using System;
using System.Collections.Generic;

namespace Yavsc.Api.Client;

/// <summary>
/// A single billable line of an estimate, mirroring the JSON shape of
/// the server-side <c>Yavsc.Models.Billing.CommandLine</c> entity.
/// </summary>
public sealed class EstimateLineDto
{
    public long Id { get; set; }
    public string Name { get; set; } = string.Empty;
    public string Description { get; set; } = string.Empty;
    public int Count { get; set; } = 1;
    public decimal UnitaryCost { get; set; }
    public long EstimateId { get; set; }
    public string Currency { get; set; } = "EUR";
}

/// <summary>
/// Estimate payload exchanged with the <c>api/v1/estimate</c> routes
/// (<c>EstimateApiController</c>). <see cref="AttachedGraphics"/> and
/// <see cref="AttachedFiles"/> are always initialised: the server-side
/// entity reads them from non-nullable string properties and a null
/// list would break its serialisation.
/// </summary>
public sealed class EstimateDto
{
    public long Id { get; set; }
    public long? CommandId { get; set; }
    public string Title { get; set; } = string.Empty;
    public string Description { get; set; } = string.Empty;
    public List<EstimateLineDto> Bill { get; set; } = new();
    public List<string> AttachedGraphics { get; set; } = new();
    public List<string> AttachedFiles { get; set; } = new();
    public string? OwnerId { get; set; }
    public string ClientId { get; set; } = string.Empty;
    public string CommandType { get; set; } = string.Empty;
    public DateTime ProviderValidationDate { get; set; }
    public DateTime ClientValidationDate { get; set; }

    /// <summary>
    /// The provider's signature on this estimate, or null when the
    /// provider has not signed. Carries the PostIt wire-format
    /// <see cref="EstimateSignatureDto.Strokes"/> so the pad can
    /// repaint a previously drawn signature on reopen without a second
    /// round-trip.
    /// </summary>
    public EstimateSignatureDto? SignaturePro { get; set; }

    /// <summary>
    /// The client's signature on this estimate, or null when the
    /// client has not signed.
    /// </summary>
    public EstimateSignatureDto? SignatureClient { get; set; }
}

/// <summary>
/// One stored signature on an estimate, mirroring the JSON shape of
/// the server-side <c>Yavsc.Models.Billing.Signature</c> entity. The
/// <see cref="Strokes"/> are the same PostIt wire-format payload that
/// was captured and are loaded back into the pad unchanged. The side
/// (Pro/Client) is implicit in which property of
/// <see cref="EstimateDto"/> carries this DTO, so no <c>Type</c>
/// field is needed.
/// </summary>
public sealed class EstimateSignatureDto
{
    public long Id { get; set; }
    public long EstimateId { get; set; }
    public int CoordinateMax { get; set; }
    public DateTime CapturedAtUtc { get; set; }
    public int[]? Strokes { get; set; }
}

/// <summary>
/// Response of a successful estimate creation
/// (<c>Ok(new { estimate.Id, estimate.Bill })</c>).
/// </summary>
public sealed class EstimateCreatedDto
{
    public long Id { get; set; }
    public List<EstimateLineDto> Bill { get; set; } = new();
}