using System.ComponentModel.DataAnnotations;

namespace PowderCoating.Application.DTOs.Company;

// ============================================================================
// LIST DTO - For Company Settings tab table
// ============================================================================
public class CustomItemTemplateListDto
{
    public int Id { get; set; }
    public string Name { get; set; } = string.Empty;
    public string? Description { get; set; }
    public string OutputMode { get; set; } = "FixedRate";
    public int FieldCount { get; set; }
    public decimal? DefaultRate { get; set; }
    public string? RateLabel { get; set; }
    public bool IsActive { get; set; }
    public int DisplayOrder { get; set; }
    public string? DiagramImagePath { get; set; }
}

// ============================================================================
// FULL DTO - For Edit modal and formula evaluation
// ============================================================================
public class CustomItemTemplateDto
{
    public int Id { get; set; }
    public string Name { get; set; } = string.Empty;
    public string? Description { get; set; }
    public string OutputMode { get; set; } = "FixedRate";
    public string FieldsJson { get; set; } = "[]";
    public string Formula { get; set; } = string.Empty;
    public decimal? DefaultRate { get; set; }
    public string? RateLabel { get; set; }
    public string? Notes { get; set; }
    public int DisplayOrder { get; set; }
    public bool IsActive { get; set; }
    public string? DiagramImagePath { get; set; }
}

// ============================================================================
// CREATE DTO
// ============================================================================
public class CreateCustomItemTemplateDto
{
    [Required]
    [StringLength(100)]
    public string Name { get; set; } = string.Empty;

    [StringLength(500)]
    public string? Description { get; set; }

    /// <summary>"FixedRate" or "SurfaceAreaSqFt"</summary>
    [Required]
    public string OutputMode { get; set; } = "FixedRate";

    /// <summary>JSON array of field definitions: [{name, label, unit, defaultValue}]</summary>
    [Required]
    public string FieldsJson { get; set; } = "[]";

    [Required]
    public string Formula { get; set; } = string.Empty;

    public decimal? DefaultRate { get; set; }

    [StringLength(50)]
    public string? RateLabel { get; set; }

    [StringLength(1000)]
    public string? Notes { get; set; }

    public int DisplayOrder { get; set; }
    public bool IsActive { get; set; } = true;
}

// ============================================================================
// UPDATE DTO
// ============================================================================
public class UpdateCustomItemTemplateDto
{
    public int Id { get; set; }

    [Required]
    [StringLength(100)]
    public string Name { get; set; } = string.Empty;

    [StringLength(500)]
    public string? Description { get; set; }

    [Required]
    public string OutputMode { get; set; } = "FixedRate";

    [Required]
    public string FieldsJson { get; set; } = "[]";

    [Required]
    public string Formula { get; set; } = string.Empty;

    public decimal? DefaultRate { get; set; }

    [StringLength(50)]
    public string? RateLabel { get; set; }

    [StringLength(1000)]
    public string? Notes { get; set; }

    public int DisplayOrder { get; set; }
    public bool IsActive { get; set; } = true;

    /// <summary>Existing diagram path — kept if no new file is uploaded.</summary>
    public string? DiagramImagePath { get; set; }
}

// ============================================================================
// WIZARD PICKER DTO - Lean DTO for populating the quote wizard template list
// ============================================================================
public class CustomItemTemplatePickerDto
{
    public int Id { get; set; }
    public string Name { get; set; } = string.Empty;
    public string? Description { get; set; }
    public string OutputMode { get; set; } = "FixedRate";
    public string FieldsJson { get; set; } = "[]";
    public string Formula { get; set; } = string.Empty;
    public decimal? DefaultRate { get; set; }
    public string? RateLabel { get; set; }
    public string? DiagramImagePath { get; set; }
}

// ============================================================================
// AI GENERATION DTOs
// ============================================================================
public class GenerateFormulaFromAiRequest
{
    [Required]
    public string Description { get; set; } = string.Empty;
}

public class GenerateFormulaFromAiResponse
{
    public bool Success { get; set; }
    public string? Error { get; set; }
    public string? Name { get; set; }
    public string? OutputMode { get; set; }
    public string? FieldsJson { get; set; }
    public string? Formula { get; set; }
    public decimal? DefaultRate { get; set; }
    public string? RateLabel { get; set; }
    public string? Reasoning { get; set; }

    /// <summary>Result of running the formula with any sample values found in the description.</summary>
    public decimal? VerificationResult { get; set; }
    public string? VerificationInputs { get; set; }
}

// ============================================================================
// FORMULA EVALUATION DTOs
// ============================================================================
public class EvaluateFormulaRequest
{
    [Required]
    public string Formula { get; set; } = string.Empty;

    /// <summary>JSON object of variable name → value pairs, e.g. {"box_l": 43, "rate": 0.05}</summary>
    [Required]
    public string VariablesJson { get; set; } = "{}";
}

public class EvaluateFormulaResponse
{
    public bool Success { get; set; }
    public decimal? Result { get; set; }
    public string? Error { get; set; }
}