package service

import (
	"context"

	"kra/internal/biz"
	"kra/internal/service/dto"
)

type OrganizationService struct{ uc *biz.OrganizationUsecase }

func NewOrganizationService(uc *biz.OrganizationUsecase) *OrganizationService {
	return &OrganizationService{uc: uc}
}

func departmentResponse(value *biz.Department) *dto.DepartmentResponse {
	children := make([]*dto.DepartmentResponse, 0, len(value.Children))
	for _, child := range value.Children {
		children = append(children, departmentResponse(child))
	}
	var leader any
	if value.Leader != nil {
		leader = convertUser(value.Leader)
	}
	return &dto.DepartmentResponse{ID: value.ID, CreatedAt: value.CreatedAt, UpdatedAt: value.UpdatedAt, DeletedAt: nil, Name: value.Name, ParentID: value.ParentID, Ancestors: value.Ancestors, Sort: value.Sort, LeaderID: value.LeaderID, Leader: leader, Status: value.Status, Children: children, NamePath: value.NamePath}
}

func departmentDomain(value *dto.DepartmentRequest) *biz.Department {
	return &biz.Department{ID: value.ID, Name: value.Name, ParentID: value.ParentID, Sort: value.Sort, LeaderID: value.LeaderID, Status: value.Status}
}

func (s *OrganizationService) Departments(ctx context.Context, name string) ([]*dto.DepartmentResponse, error) {
	items, err := s.uc.Departments(ctx, name)
	if err != nil {
		return nil, err
	}
	out := make([]*dto.DepartmentResponse, 0, len(items))
	for _, item := range items {
		out = append(out, departmentResponse(item))
	}
	return out, nil
}
func (s *OrganizationService) CreateDepartment(ctx context.Context, req *dto.DepartmentRequest) error {
	return s.uc.CreateDepartment(ctx, departmentDomain(req))
}
func (s *OrganizationService) UpdateDepartment(ctx context.Context, req *dto.DepartmentRequest) error {
	return s.uc.UpdateDepartment(ctx, departmentDomain(req))
}
func (s *OrganizationService) DeleteDepartment(ctx context.Context, id uint) error {
	return s.uc.DeleteDepartment(ctx, id)
}
func (s *OrganizationService) Department(ctx context.Context, id uint) (*dto.DepartmentResponse, error) {
	value, err := s.uc.Department(ctx, id)
	if err != nil {
		return nil, err
	}
	return departmentResponse(value), nil
}
func (s *OrganizationService) DepartmentUserIDs(ctx context.Context, id uint) ([]uint, error) {
	return s.uc.DepartmentUserIDs(ctx, id)
}
func (s *OrganizationService) SetDepartmentUsers(ctx context.Context, req *dto.SetDepartmentUsersRequest) error {
	return s.uc.SetDepartmentUsers(ctx, req.DepartmentID, req.UserIDs)
}
func (s *OrganizationService) SetUserDepartments(ctx context.Context, req *dto.SetUserDepartmentsRequest) error {
	return s.uc.SetUserDepartments(ctx, req.ID, req.DepartmentIDs, req.Primary)
}

func positionDomain(value *dto.PositionRequest) *biz.Position {
	return &biz.Position{ID: value.ID, Name: value.Name, Code: value.Code, Sort: value.Sort, Status: value.Status, Remark: value.Remark}
}
func positionResponse(value *biz.Position) *dto.PositionResponse {
	return &dto.PositionResponse{ID: value.ID, CreatedAt: value.CreatedAt, UpdatedAt: value.UpdatedAt, DeletedAt: nil, Name: value.Name, Code: value.Code, Sort: value.Sort, Status: value.Status, Remark: value.Remark}
}
func (s *OrganizationService) Positions(ctx context.Context, req *dto.PositionListRequest) ([]*dto.PositionResponse, int64, error) {
	items, total, err := s.uc.Positions(ctx, req.Page, req.PageSize, &biz.PositionListFilter{Name: req.Name, Code: req.Code, Status: req.Status})
	if err != nil {
		return nil, 0, err
	}
	out := make([]*dto.PositionResponse, 0, len(items))
	for _, item := range items {
		out = append(out, positionResponse(item))
	}
	return out, total, nil
}
func (s *OrganizationService) CreatePosition(ctx context.Context, req *dto.PositionRequest) error {
	return s.uc.CreatePosition(ctx, positionDomain(req))
}
func (s *OrganizationService) UpdatePosition(ctx context.Context, req *dto.PositionRequest) error {
	return s.uc.UpdatePosition(ctx, positionDomain(req))
}
func (s *OrganizationService) DeletePosition(ctx context.Context, id uint) error {
	return s.uc.DeletePosition(ctx, id)
}
func (s *OrganizationService) Position(ctx context.Context, id uint) (*dto.PositionResponse, error) {
	value, err := s.uc.Position(ctx, id)
	if err != nil {
		return nil, err
	}
	return positionResponse(value), nil
}
func (s *OrganizationService) PositionUserIDs(ctx context.Context, id uint) ([]uint, error) {
	return s.uc.PositionUserIDs(ctx, id)
}
func (s *OrganizationService) SetPositionUsers(ctx context.Context, req *dto.SetPositionUsersRequest) error {
	return s.uc.SetPositionUsers(ctx, req.PositionID, req.UserIDs)
}
func (s *OrganizationService) SetUserPositions(ctx context.Context, req *dto.SetUserPositionsRequest) error {
	return s.uc.SetUserPositions(ctx, req.ID, req.PositionIDs)
}