using System.Text.Json.Serialization;

namespace SeaHaven.Services.DTOs
{
    public class VendorRosterDTO
    {
        public int CompanyId { get; set; }
        public string Name { get; set; } = string.Empty;
        public string? CompanyPhone { get; set; }
        public string? Email { get; set; }
        public string? Address { get; set; }
        public string? City { get; set; }
        public string? State { get; set; }
        public string? Zip { get; set; }
        public string? GoogleMapsUrl { get; set; }
        public string? Notes { get; set; }
        public int? AreaId { get; set; }
        public string? AreaName { get; set; }
        public string? RowVersion { get; set; }
        public List<VendorRosterTechnicianDTO> Technicians { get; set; } = new();
    }

    public class VendorRosterTechnicianDTO
    {
        public int? Id { get; set; }
        public string? ContactName { get; set; }
        public string? Phone { get; set; }
        public string? Email { get; set; }
        public string? PreferredContact { get; set; }
        public string? TradeSpecialties { get; set; }
        public bool IsActive { get; set; }
        public int TotalJobs { get; set; }
    }

    public class RosterTechnicianInputDTO
    {
        public int? Id { get; set; }
        public string? ContactName { get; set; }
        public string? Phone { get; set; }
        public string? Email { get; set; }
        public string? PreferredContact { get; set; }
        public string? TradeSpecialties { get; set; }
        public bool? IsActive { get; set; }
    }

    public class CreateVendorRosterDTO
    {
        public required string Name { get; set; }
        public string? CompanyPhone { get; set; }
        public string? Email { get; set; }
        public string? Address { get; set; }
        public string? City { get; set; }
        public string? State { get; set; }
        public string? Zip { get; set; }
        public string? GoogleMapsUrl { get; set; }
        public string? Notes { get; set; }

        // SH-278: optional Area id; null leaves the new company Unassigned. Assigning
        // an Area requires the Admin role.
        public int? AreaId { get; set; }
        public List<RosterTechnicianInputDTO> Technicians { get; set; } = new();
    }

    public class ReconcileVendorRosterDTO
    {
        public required string RowVersion { get; set; }
        public required string Name { get; set; }
        public string? CompanyPhone { get; set; }
        public string? Email { get; set; }
        public string? Address { get; set; }
        public string? City { get; set; }
        public string? State { get; set; }
        public string? Zip { get; set; }
        public string? GoogleMapsUrl { get; set; }
        public string? Notes { get; set; }

        // SH-278: an omitted areaId leaves the stored Area unchanged, so clients that
        // predate Area never clear it. An explicit null clears it to Unassigned.
        private int? _areaId;
        public int? AreaId
        {
            get => _areaId;
            set
            {
                _areaId = value;
                AreaIdProvided = true;
            }
        }

        [JsonIgnore]
        public bool AreaIdProvided { get; private set; }
        public List<RosterTechnicianInputDTO> Technicians { get; set; } = new();
    }

    // Partial, purely additive roster update (SH-250): technicians listed here are
    // inserted; any technician absent from the payload is never removed, soft-deleted
    // or deactivated. Company fields are optional; a null field means "unchanged".
    public class AddTechniciansVendorRosterDTO
    {
        public required string RowVersion { get; set; }
        public List<RosterTechnicianInputDTO> AddTechnicians { get; set; } = new();
        public VendorRosterCompanyFieldsDTO? CompanyFields { get; set; }
    }

    public class VendorRosterCompanyFieldsDTO
    {
        public string? Name { get; set; }
        public string? CompanyPhone { get; set; }
        public string? Email { get; set; }
        public string? Address { get; set; }
        public string? City { get; set; }
        public string? State { get; set; }
        public string? Zip { get; set; }
        public string? GoogleMapsUrl { get; set; }
        public string? Notes { get; set; }

        // SH-278: same presence semantics as ReconcileVendorRosterDTO.AreaId.
        private int? _areaId;
        public int? AreaId
        {
            get => _areaId;
            set
            {
                _areaId = value;
                AreaIdProvided = true;
            }
        }

        [JsonIgnore]
        public bool AreaIdProvided { get; private set; }
    }

    // SH-278: raised when a caller without the Admin role tries to change a vendor
    // company's Area. Mapped to a stable 403 by the API.
    public sealed class VendorAreaAssignmentForbiddenException : Exception
    {
        public VendorAreaAssignmentForbiddenException()
            : base("Only administrators can assign a vendor company Area.")
        {
        }
    }
}