using System;
using Autodesk.AutoCAD.Geometry;
using CadParamPluging.Cad;
using CadParamPluging.Common;
using CadParamPluging.Data;
using CadParamPluging.Domain.Models;

namespace CadParamPluging.Domain
{
    public static class DomainFacade
    {
        private static readonly ITemplateRepository TemplateRepository = new DefaultTemplateRepository();

        public static TemplateInfo SelectTemplate(TemplateParams templateParams)
        {
            var definition = TemplateRepository.FindTemplate(templateParams);

            if (definition == null)
            {
                throw new BusinessException("未找到匹配的模板，或匹配结果不唯一。");
            }

            return new TemplateInfo
            {
                Name = definition.Description ?? definition.FilePath,
                FilePath = definition.FilePath,
                Description = definition.Description
            };
        }

        public static void ValidateParameters(TemplateParams templateParams, DrawingParams drawingParams)
        {
            if (templateParams == null)
            {
                throw new BusinessException("模板参数不能为空。");
            }

            if (string.IsNullOrWhiteSpace(templateParams.ProjectType) ||
                string.IsNullOrWhiteSpace(templateParams.DrawingType))
            {
                throw new BusinessException("请填写项目类型和图纸类型。");
            }

            // 出图参数由不同模板决定，后续由模板对应的生成器做更精细的校验。
        }

        public static void DrawByParams(TemplateInfo template, DrawingParams drawingParams, CadDrawingService cadService)
        {
            if (template == null)
            {
                throw new ArgumentNullException(nameof(template));
            }

            if (cadService == null)
            {
                throw new ArgumentNullException(nameof(cadService));
            }

            var width = drawingParams?.Width ?? 0;
            var height = drawingParams?.Height ?? 0;

            if (width <= 0 || height <= 0)
            {
                width = width <= 0 ? 5000 : width;
                height = height <= 0 ? 3000 : height;
            }

            var p1 = new Point3d(0, 0, 0);
            var p2 = new Point3d(width, 0, 0);
            var p3 = new Point3d(width, height, 0);
            var p4 = new Point3d(0, height, 0);

            cadService.DrawLine(p1, p2);
            cadService.DrawLine(p2, p3);
            cadService.DrawLine(p3, p4);
            cadService.DrawLine(p4, p1);
        }
    }
}