package service

import (
	"fmt"
	"github.com/linmadan/egglib-go/core/application"
	"github.com/linmadan/egglib-go/utils/tool_funs"
	"gitlab.fjmaimaimai.com/linmadan/mmm-worth/pkg/application/employee/command"
	"gitlab.fjmaimaimai.com/linmadan/mmm-worth/pkg/application/employee/query"
	"gitlab.fjmaimaimai.com/linmadan/mmm-worth/pkg/application/factory"
	"gitlab.fjmaimaimai.com/linmadan/mmm-worth/pkg/domain"
	"time"
)

// 员工服务
type EmployeeService struct {
}

// 创建新员工
func (employeeService *EmployeeService) CreateEmployee(createEmployeeCommand *command.CreateEmployeeCommand) (interface{}, error) {
	if err := createEmployeeCommand.ValidateCommand(); err != nil {
		return nil, application.ThrowError(application.ARG_ERROR, err.Error())
	}
	transactionContext, err := factory.CreateTransactionContext(nil)
	if err != nil {
		return nil, application.ThrowError(application.TRANSACTION_ERROR, err.Error())
	}
	if err := transactionContext.StartTransaction(); err != nil {
		return nil, application.ThrowError(application.TRANSACTION_ERROR, err.Error())
	}
	defer func() {
		transactionContext.RollbackTransaction()
	}()
	newEmployee := &domain.Employee{
		EmployeeInfo: &domain.EmployeeInfo{
			Uid:             createEmployeeCommand.Uid,
			EmployeeName:    createEmployeeCommand.EmployeeName,
			EmployeeAccount: createEmployeeCommand.EmployeeAccount,
		},
		SuMoney: 0,
		CreateTime: time.Now(),
	}
	var employeeRepository domain.EmployeeRepository
	if value, err := factory.CreateEmployeeRepository(map[string]interface{}{
		"transactionContext": transactionContext,
	}); err != nil {
		return nil, application.ThrowError(application.INTERNAL_SERVER_ERROR, err.Error())
	} else {
		employeeRepository = value
	}
	if employee, err := employeeRepository.Save(newEmployee); err != nil {
		return nil, application.ThrowError(application.INTERNAL_SERVER_ERROR, err.Error())
	} else {
		if err := transactionContext.CommitTransaction(); err != nil {
			return nil, application.ThrowError(application.TRANSACTION_ERROR, err.Error())
		}
		return employee, nil
	}
}

// 返回员工
func (employeeService *EmployeeService) GetEmployee(getEmployeeQuery *query.GetEmployeeQuery) (interface{}, error) {
	if err := getEmployeeQuery.ValidateQuery(); err != nil {
		return nil, application.ThrowError(application.ARG_ERROR, err.Error())
	}
	transactionContext, err := factory.CreateTransactionContext(nil)
	if err != nil {
		return nil, application.ThrowError(application.TRANSACTION_ERROR, err.Error())
	}
	if err := transactionContext.StartTransaction(); err != nil {
		return nil, application.ThrowError(application.TRANSACTION_ERROR, err.Error())
	}
	defer func() {
		transactionContext.RollbackTransaction()
	}()
	var employeeRepository domain.EmployeeRepository
	if value, err := factory.CreateEmployeeRepository(map[string]interface{}{
		"transactionContext": transactionContext,
	}); err != nil {
		return nil, application.ThrowError(application.INTERNAL_SERVER_ERROR, err.Error())
	} else {
		employeeRepository = value
	}
	employee, err := employeeRepository.FindOne(map[string]interface{}{"uid": getEmployeeQuery.Uid})
	if err != nil {
		return nil, application.ThrowError(application.INTERNAL_SERVER_ERROR, err.Error())
	}
	if employee == nil {
		return nil, application.ThrowError(application.RES_NO_FIND_ERROR, fmt.Sprintf("%s", string(getEmployeeQuery.Uid)))
	} else {
		if err := transactionContext.CommitTransaction(); err != nil {
			return nil, application.ThrowError(application.TRANSACTION_ERROR, err.Error())
		}
		return employee, nil
	}
}

// 更新员工
func (employeeService *EmployeeService) UpdateEmployee(updateEmployeeCommand *command.UpdateEmployeeCommand) (interface{}, error) {
	if err := updateEmployeeCommand.ValidateCommand(); err != nil {
		return nil, application.ThrowError(application.ARG_ERROR, err.Error())
	}
	transactionContext, err := factory.CreateTransactionContext(nil)
	if err != nil {
		return nil, application.ThrowError(application.TRANSACTION_ERROR, err.Error())
	}
	if err := transactionContext.StartTransaction(); err != nil {
		return nil, application.ThrowError(application.TRANSACTION_ERROR, err.Error())
	}
	defer func() {
		transactionContext.RollbackTransaction()
	}()
	var employeeRepository domain.EmployeeRepository
	if value, err := factory.CreateEmployeeRepository(map[string]interface{}{
		"transactionContext": transactionContext,
	}); err != nil {
		return nil, application.ThrowError(application.INTERNAL_SERVER_ERROR, err.Error())
	} else {
		employeeRepository = value
	}
	employee, err := employeeRepository.FindOne(map[string]interface{}{"uid": updateEmployeeCommand.Uid})
	if err != nil {
		return nil, application.ThrowError(application.INTERNAL_SERVER_ERROR, err.Error())
	}
	if employee == nil {
		return nil, application.ThrowError(application.RES_NO_FIND_ERROR, fmt.Sprintf("%s", string(updateEmployeeCommand.Uid)))
	}
	updateEmployeeCommand.CreateTime = time.Now()
	if err := employee.Update(tool_funs.SimpleStructToMap(updateEmployeeCommand)); err != nil {
		return nil, application.ThrowError(application.BUSINESS_ERROR, err.Error())
	}
	if employee, err := employeeRepository.Save(employee); err != nil {
		return nil, application.ThrowError(application.INTERNAL_SERVER_ERROR, err.Error())
	} else {
		if err := transactionContext.CommitTransaction(); err != nil {
			return nil, application.ThrowError(application.TRANSACTION_ERROR, err.Error())
		}
		return employee, nil
	}
}

// 移除员工
func (employeeService *EmployeeService) RemoveEmployee(removeEmployeeCommand *command.RemoveEmployeeCommand) (interface{}, error) {
	if err := removeEmployeeCommand.ValidateCommand(); err != nil {
		return nil, application.ThrowError(application.ARG_ERROR, err.Error())
	}
	transactionContext, err := factory.CreateTransactionContext(nil)
	if err != nil {
		return nil, application.ThrowError(application.TRANSACTION_ERROR, err.Error())
	}
	if err := transactionContext.StartTransaction(); err != nil {
		return nil, application.ThrowError(application.TRANSACTION_ERROR, err.Error())
	}
	defer func() {
		transactionContext.RollbackTransaction()
	}()
	var employeeRepository domain.EmployeeRepository
	if value, err := factory.CreateEmployeeRepository(map[string]interface{}{
		"transactionContext": transactionContext,
	}); err != nil {
		return nil, application.ThrowError(application.INTERNAL_SERVER_ERROR, err.Error())
	} else {
		employeeRepository = value
	}
	employee, err := employeeRepository.FindOne(map[string]interface{}{"uid": removeEmployeeCommand.Uid})
	if err != nil {
		return nil, application.ThrowError(application.INTERNAL_SERVER_ERROR, err.Error())
	}
	if employee == nil {
		return nil, application.ThrowError(application.RES_NO_FIND_ERROR, fmt.Sprintf("%s", string(removeEmployeeCommand.Uid)))
	}
	if employee, err := employeeRepository.Remove(employee); err != nil {
		return nil, application.ThrowError(application.INTERNAL_SERVER_ERROR, err.Error())
	} else {
		if err := transactionContext.CommitTransaction(); err != nil {
			return nil, application.ThrowError(application.TRANSACTION_ERROR, err.Error())
		}
		return employee, nil
	}
}

// 返回员工列表
func (employeeService *EmployeeService) ListEmployee(listEmployeeQuery *query.ListEmployeeQuery) (interface{}, error) {
	if err := listEmployeeQuery.ValidateQuery(); err != nil {
		return nil, application.ThrowError(application.ARG_ERROR, err.Error())
	}

	transactionContext, err := factory.CreateTransactionContext(nil)
	if err != nil {
		return nil, application.ThrowError(application.TRANSACTION_ERROR, err.Error())
	}
	if err := transactionContext.StartTransaction(); err != nil {
		return nil, application.ThrowError(application.TRANSACTION_ERROR, err.Error())
	}
	defer func() {
		transactionContext.RollbackTransaction()
	}()

	var employeeRepository domain.EmployeeRepository
	if value, err := factory.CreateEmployeeRepository(map[string]interface{}{
		"transactionContext": transactionContext,
	}); err != nil {
		return nil, application.ThrowError(application.INTERNAL_SERVER_ERROR, err.Error())
	} else {
		employeeRepository = value
	}

	if count, employees, err := employeeRepository.Find(map[string]interface{}{
		"companyId": listEmployeeQuery.CompanyId,
		"employeeNameMatch": listEmployeeQuery.EmployeeNameMatch,
		"offset": listEmployeeQuery.Offset,
		"limit": listEmployeeQuery.Limit,
	}); err != nil {
		return nil, application.ThrowError(application.INTERNAL_SERVER_ERROR, err.Error())
	} else {
		if err := transactionContext.CommitTransaction(); err != nil {
			return nil, application.ThrowError(application.TRANSACTION_ERROR, err.Error())
		}
		return map[string]interface{}{
			"count":     count,
			"employees": employees,
		}, nil
	}
}

func NewEmployeeService(options map[string]interface{}) *EmployeeService {
	newEmployeeService := &EmployeeService{}
	return newEmployeeService
}