using System.ComponentModel.DataAnnotations;

namespace Lagerbestand.Models;

/// <summary>
/// Represents a task template that can be used to quickly create new tasks
/// </summary>
public class KanbanTaskTemplate
{
    public Guid Id { get; set; } = Guid.NewGuid();

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

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

    /// <summary>
    /// Title pattern for tasks created from this template
    /// Can include placeholders like {Kunde}
    /// </summary>
    [MaxLength(200)]
    public string TitlePattern { get; set; } = string.Empty;

    /// <summary>
    /// Default description for tasks
    /// </summary>
    public string? DefaultDescription { get; set; }

    /// <summary>
    /// Default column for tasks created from this template
    /// </summary>
    public Guid? DefaultColumnId { get; set; }

    /// <summary>
    /// Default priority for tasks
    /// </summary>
    public KanbanTaskPriority DefaultPriority { get; set; } = KanbanTaskPriority.Medium;

    /// <summary>
    /// Default estimated minutes
    /// </summary>
    public int? DefaultEstimatedMinutes { get; set; }

    /// <summary>
    /// Display order for templates
    /// </summary>
    public int SortOrder { get; set; }

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

    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
    public DateTime UpdatedAt { get; set; } = DateTime.UtcNow;

    // Navigation properties
    public virtual KanbanColumn? DefaultColumn { get; set; }
    public virtual ICollection<KanbanTaskTemplateTodo> Todos { get; set; } = new List<KanbanTaskTemplateTodo>();
    public virtual ICollection<KanbanTaskTemplateLabel> TemplateLabels { get; set; } = new List<KanbanTaskTemplateLabel>();
}

/// <summary>
/// Predefined todo item for a template
/// </summary>
public class KanbanTaskTemplateTodo
{
    public Guid Id { get; set; } = Guid.NewGuid();

    public Guid TemplateId { get; set; }

    [Required]
    [MaxLength(500)]
    public string Text { get; set; } = string.Empty;

    public int SortOrder { get; set; }

    // Navigation properties
    public virtual KanbanTaskTemplate? Template { get; set; }
}

/// <summary>
/// Default label for a template (many-to-many)
/// </summary>
public class KanbanTaskTemplateLabel
{
    public Guid TemplateId { get; set; }
    public Guid LabelId { get; set; }

    // Navigation properties
    public virtual KanbanTaskTemplate? Template { get; set; }
    public virtual KanbanLabel? Label { get; set; }
}