package com.mosquito.project.permission;

import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;

import java.util.List;

/**
 * 用户权限控制器 - 处理用户角色分配
 */
@RestController
@RequestMapping("/api/users")
public class UserController {

    private final UserRoleRepository userRoleRepository;
    private final RoleRepository roleRepository;

    public UserController(UserRoleRepository userRoleRepository, RoleRepository roleRepository) {
        this.userRoleRepository = userRoleRepository;
        this.roleRepository = roleRepository;
    }

    /**
     * 获取用户角色
     */
    @GetMapping("/{userId}/roles")
    public ResponseEntity<List<String>> getUserRoles(@PathVariable Long userId) {
        List<Long> roleIds = userRoleRepository.findRoleIdsByUserId(userId);
        List<String> roleCodes = roleIds.stream()
                .map(id -> roleRepository.findById(id))
                .filter(java.util.Optional::isPresent)
                .map(java.util.Optional::get)
                .map(SysRole::getRoleCode)
                .toList();
        return ResponseEntity.ok(roleCodes);
    }

    /**
     * 分配角色给用户
     */
    @PostMapping("/{userId}/roles")
    public ResponseEntity<Void> assignRoles(@PathVariable Long userId, @RequestBody AssignRolesRequest request) {
        // 删除现有角色关联
        userRoleRepository.deleteByUserId(userId);

        // 创建新的角色关联
        for (Long roleId : request.getRoleIds()) {
            SysUserRole userRole = new SysUserRole();
            userRole.setUserId(userId);
            userRole.setRoleId(roleId);
            userRoleRepository.save(userRole);
        }

        return ResponseEntity.ok().build();
    }

    /**
     * 角色分配请求
     */
    public static class AssignRolesRequest {
        private List<Long> roleIds;

        public List<Long> getRoleIds() { return roleIds; }
        public void setRoleIds(List<Long> roleIds) { this.roleIds = roleIds; }
    }
}