package com.rongyichuang.role.service;

import com.rongyichuang.role.dto.response.RoleResponse;
import com.rongyichuang.role.entity.Role;
import com.rongyichuang.role.repository.RoleRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.format.DateTimeFormatter;
import java.util.List;
import java.util.Optional;
import java.util.stream.Collectors;

@Service
public class RoleService {
    
    @Autowired
    private RoleRepository roleRepository;
    
    private static final DateTimeFormatter DATE_FORMATTER = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
    
    /**
     * 获取所有启用状态的角色
     */
    public List<RoleResponse> getAllActiveRoles() {
        List<Role> roles = roleRepository.findAllActiveRoles();
        return roles.stream()
                .map(this::convertToResponse)
                .collect(Collectors.toList());
    }
    
    /**
     * 获取所有角色
     */
    public List<RoleResponse> getAllRoles() {
        List<Role> roles = roleRepository.findAll();
        return roles.stream()
                .map(this::convertToResponse)
                .collect(Collectors.toList());
    }
    
    /**
     * 根据ID获取角色
     */
    public Optional<RoleResponse> getRoleById(Long id) {
        Optional<Role> role = roleRepository.findById(id);
        return role.map(this::convertToResponse);
    }
    
    /**
     * 根据角色代码获取角色
     */
    public Optional<RoleResponse> getRoleByCode(String code) {
        Optional<Role> role = roleRepository.findByCode(code);
        return role.map(this::convertToResponse);
    }
    
    /**
     * 根据状态获取角色
     */
    public List<RoleResponse> getRolesByState(Integer state) {
        List<Role> roles = roleRepository.findByStateOrderById(state);
        return roles.stream()
                .map(this::convertToResponse)
                .collect(Collectors.toList());
    }
    
    /**
     * 根据名称模糊查询角色
     */
    public List<RoleResponse> searchRolesByName(String name) {
        List<Role> roles = roleRepository.findByNameContaining(name);
        return roles.stream()
                .map(this::convertToResponse)
                .collect(Collectors.toList());
    }
    
    /**
     * 将Role实体转换为RoleResponse
     */
    private RoleResponse convertToResponse(Role role) {
        RoleResponse response = new RoleResponse();
        response.setId(role.getId());
        response.setCode(role.getCode());
        response.setName(role.getName());
        response.setDescription(role.getDescription());
        response.setState(role.getState());
        
        if (role.getCreateTime() != null) {
            response.setCreateTime(role.getCreateTime().format(DATE_FORMATTER));
        }
        if (role.getUpdateTime() != null) {
            response.setUpdateTime(role.getUpdateTime().format(DATE_FORMATTER));
        }
        
        return response;
    }
}