using FabWorks.Api.DTOs;
using FabWorks.Core.Data;
using FabWorks.Core.Models;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;

namespace FabWorks.Api.Controllers
{
    [ApiController]
    [Route("api/exports/{exportId}/bom-items")]
    public class BomItemsController : ControllerBase
    {
        private readonly FabWorksDbContext _db;

        public BomItemsController(FabWorksDbContext db) => _db = db;

        [HttpGet]
        public async Task<ActionResult<List<BomItemDto>>> GetByExport(int exportId)
        {
            var items = await _db.BomItems
                .Include(b => b.CutTemplate)
                .Include(b => b.FormProgram)
                .Where(b => b.ExportRecordId == exportId)
                .OrderBy(b => b.SortOrder)
                .ToListAsync();

            return items.Select(MapToDto).ToList();
        }

        [HttpPost]
        public async Task<ActionResult<BomItemDto>> Create(int exportId, BomItemDto dto)
        {
            var export = await _db.ExportRecords.FindAsync(exportId);
            if (export == null) return NotFound("Export record not found");

            var item = new BomItem
            {
                ExportRecordId = exportId,
                ItemNo = dto.ItemNo ?? "",
                PartNo = dto.PartNo ?? "",
                SortOrder = dto.SortOrder,
                Qty = dto.Qty,
                TotalQty = dto.TotalQty,
                Description = dto.Description ?? "",
                PartName = dto.PartName ?? "",
                ConfigurationName = dto.ConfigurationName ?? "",
                Material = dto.Material ?? ""
            };

            if (dto.CutTemplate != null)
            {
                item.CutTemplate = new CutTemplate
                {
                    DxfFilePath = dto.CutTemplate.DxfFilePath ?? "",
                    ContentHash = dto.CutTemplate.ContentHash,
                    Thickness = dto.CutTemplate.Thickness,
                    KFactor = dto.CutTemplate.KFactor,
                    DefaultBendRadius = dto.CutTemplate.DefaultBendRadius
                };
            }

            if (dto.FormProgram != null)
            {
                item.FormProgram = new FormProgram
                {
                    ProgramFilePath = dto.FormProgram.ProgramFilePath ?? "",
                    ContentHash = dto.FormProgram.ContentHash,
                    ProgramName = dto.FormProgram.ProgramName ?? "",
                    Thickness = dto.FormProgram.Thickness,
                    MaterialType = dto.FormProgram.MaterialType ?? "",
                    KFactor = dto.FormProgram.KFactor,
                    BendCount = dto.FormProgram.BendCount,
                    UpperToolNames = dto.FormProgram.UpperToolNames ?? "",
                    LowerToolNames = dto.FormProgram.LowerToolNames ?? "",
                    SetupNotes = dto.FormProgram.SetupNotes ?? ""
                };
            }

            _db.BomItems.Add(item);
            await _db.SaveChangesAsync();

            return CreatedAtAction(nameof(GetByExport), new { exportId }, MapToDto(item));
        }

        private static BomItemDto MapToDto(BomItem b) => new()
        {
            ID = b.ID,
            ItemNo = b.ItemNo,
            PartNo = b.PartNo,
            SortOrder = b.SortOrder,
            Qty = b.Qty,
            TotalQty = b.TotalQty,
            Description = b.Description,
            PartName = b.PartName,
            ConfigurationName = b.ConfigurationName,
            Material = b.Material,
            CutTemplate = b.CutTemplate == null ? null : new CutTemplateDto
            {
                Id = b.CutTemplate.Id,
                DxfFilePath = b.CutTemplate.DxfFilePath,
                ContentHash = b.CutTemplate.ContentHash,
                Thickness = b.CutTemplate.Thickness,
                KFactor = b.CutTemplate.KFactor,
                DefaultBendRadius = b.CutTemplate.DefaultBendRadius
            },
            FormProgram = b.FormProgram == null ? null : new FormProgramDto
            {
                Id = b.FormProgram.Id,
                ProgramFilePath = b.FormProgram.ProgramFilePath,
                ContentHash = b.FormProgram.ContentHash,
                ProgramName = b.FormProgram.ProgramName,
                Thickness = b.FormProgram.Thickness,
                MaterialType = b.FormProgram.MaterialType,
                KFactor = b.FormProgram.KFactor,
                BendCount = b.FormProgram.BendCount,
                UpperToolNames = b.FormProgram.UpperToolNames,
                LowerToolNames = b.FormProgram.LowerToolNames,
                SetupNotes = b.FormProgram.SetupNotes
            }
        };
    }
}