package service

import (
	"assets/consts/procurement"
	"assets/dao/procurement"
	"assets/model/dto/procurement"
	"assets/model/entity/procurement"
	"context"

	"github.com/gogf/gf/v2/errors/gerror"
	"go.mongodb.org/mongo-driver/v2/bson"
)

type supplier struct{}

// Supplier 供应商服务
var Supplier = new(supplier)

// CreateSupplier 创建供应商
func (s *supplier) CreateSupplier(ctx context.Context, req *dto.CreateSupplierReq) (*dto.CreateSupplierRes, error) {
	// 转换为实体
	_ = &entity.Supplier{
		Name:    req.Name,
		Code:    req.Code,
		Phone:   req.Phone,
		Mobile:  req.Mobile,
		Email:   req.Email,
		Address: req.Address,
		Status:  consts.SupplierStatus(1), // 默认活跃状态
	}

	// 保存到数据库
	ids, err := dao.Supplier.Insert(ctx, req)
	if err != nil {
		return nil, gerror.Wrap(err, "创建供应商失败")
	}

	var id *bson.ObjectID
	if len(ids) > 0 {
		if objectID, ok := ids[0].(bson.ObjectID); ok {
			id = &objectID
		}
	}

	return &dto.CreateSupplierRes{ID: id}, nil
}

// BatchCreateSuppliers 批量创建供应商
func (s *supplier) BatchCreateSuppliers(ctx context.Context, req *dto.BatchCreateSuppliersReq) (*dto.BatchCreateSuppliersRes, error) {
	// 保存到数据库
	ids, err := dao.Supplier.BatchInsert(ctx, req)
	if err != nil {
		return nil, gerror.Wrap(err, "批量创建供应商失败")
	}

	// 转换ID列表
	idList := make([]*bson.ObjectID, 0, len(ids))
	for _, id := range ids {
		if objectID, ok := id.(bson.ObjectID); ok {
			idList = append(idList, &objectID)
		}
	}

	return &dto.BatchCreateSuppliersRes{IDs: idList}, nil
}

// UpdateSupplier 更新供应商
func (s *supplier) UpdateSupplier(ctx context.Context, req *dto.UpdateSupplierReq) error {
	// 更新到数据库
	err := dao.Supplier.Update(ctx, req)
	if err != nil {
		return gerror.Wrap(err, "更新供应商失败")
	}

	return nil
}

// DeleteSupplier 删除供应商
func (s *supplier) DeleteSupplier(ctx context.Context, id *bson.ObjectID) error {
	return dao.Supplier.DeleteFake(ctx, id)
}

// GetSupplier 获取供应商详情
func (s *supplier) GetSupplier(ctx context.Context, id *bson.ObjectID) (*dto.GetSupplierRes, error) {
	supplier, err := dao.Supplier.GetOne(ctx, id)
	if err != nil {
		return nil, gerror.Wrap(err, "获取供应商失败")
	}

	// 转换为响应
	res := &dto.GetSupplierRes{
		ID:         supplier.Id,
		Name:       supplier.Name,
		Code:       supplier.Code,
		Phone:      supplier.Phone,
		Mobile:     supplier.Mobile,
		Email:      supplier.Email,
		Website:    supplier.Website,
		Address:    supplier.Address,
		Status:     supplier.Status,
		StatusText: consts.GetSupplierStatusText(supplier.Status),
		Rating:     supplier.Rating,
		CreatedAt:  supplier.CreatedAt.Format("2006-01-02 15:04:05"),
		UpdatedAt:  supplier.UpdatedAt.Format("2006-01-02 15:04:05"),
	}

	return res, nil
}

// ListSuppliers 获取供应商列表
func (s *supplier) ListSuppliers(ctx context.Context, req *dto.ListSuppliersReq) (*dto.ListSuppliersRes, error) {
	// 获取数据
	suppliers, total, err := dao.Supplier.List(ctx, req)
	if err != nil {
		return nil, gerror.Wrap(err, "获取供应商列表失败")
	}

	// 转换为响应
	listItems := make([]*dto.SupplierListItem, 0, len(suppliers))
	for _, supplier := range suppliers {
		listItems = append(listItems, &dto.SupplierListItem{
			ID:         supplier.Id,
			Name:       supplier.Name,
			Code:       supplier.Code,
			Phone:      supplier.Phone,
			Mobile:     supplier.Mobile,
			Email:      supplier.Email,
			Address:    supplier.Address,
			Status:     supplier.Status,
			StatusText: consts.GetSupplierStatusText(supplier.Status),
			Rating:     supplier.Rating,
			CreatedAt:  supplier.CreatedAt.Format("2006-01-02 15:04:05"),
			UpdatedAt:  supplier.UpdatedAt.Format("2006-01-02 15:04:05"),
		})
	}

	return &dto.ListSuppliersRes{
		List:  listItems,
		Total: total,
	}, nil
}

// GetSupplierOptions 获取供应商选项（用于下拉选择）
func (s *supplier) GetSupplierOptions(ctx context.Context) ([]*dto.SupplierListItem, error) {
	suppliers, err := dao.Supplier.FindActiveSuppliers(ctx)
	if err != nil {
		return nil, gerror.Wrap(err, "获取供应商选项失败")
	}

	options := make([]*dto.SupplierListItem, 0, len(suppliers))
	for _, supplier := range suppliers {
		options = append(options, &dto.SupplierListItem{
			ID:   supplier.Id,
			Name: supplier.Name,
			Code: supplier.Code,
		})
	}

	return options, nil
}

// GenerateTestData 生成测试数据
func (s *supplier) GenerateTestData(ctx context.Context) error {
	testData := &dto.BatchCreateSuppliersReq{}

	_, err := s.BatchCreateSuppliers(ctx, testData)
	if err != nil {
		return gerror.Wrap(err, "生成测试数据失败")
	}

	return nil
}