<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Log;

class UserRole extends Model
{

    protected $table = "user_roles";
    public $timestamps = false;

    /**
     * 配置用户的角色，当前的做法是，
     * 每次更新都先把userId匹配的数据全部标记删除
     * 然后批量插入新的配置的角色数据
     *
     * @param $uid
     * @param array $roles
     * @return array
     */
    public function AssignUserRoles($uid, array $roles)
    {
        if ($uid < 1) {
            return ["code" => INVALID_USER_ID];
        }

        // 删除当前用户所有的角色
        $this->where("user_id", $uid)->where("is_del", false)->update(["is_del" => true]);

        // 过滤掉无效的roleId
        $roleModel = new Role();
        $validRoles = $roleModel->select("id")->whereIn("id", $roles)->where("is_del", false)->get();
        $validRoleIds = [];
        foreach ($validRoles as $validRole) {
            array_push($validRoleIds, $validRole["id"]);
        }

        if (count($validRoleIds) < 1) {
            return ["code" => SUCCESS, "data" => ["roles" => []]];
        }

        // 重新添加用户角色新配置的角色数据
        $data = [];
        foreach ($validRoleIds as $role) {
            array_push($data, ["user_id" => $uid, "role_id" => $role]);
        }
        $this->insert($data);

//         查出批量插入的数据，并返回给前端
        $new_data = $this->select("id", "user_id", "role_id", "status")->where("user_id", $uid)->where("is_del", false)
            ->orderBy("role_id", "asc")->get();
        $rids = [];
        foreach ($new_data as $nd) {
            array_push($rids, $nd["role_id"]);
        }
        if (count($rids) > 0) {
            $role = new Role();
            $roleInfo = $role->LoadRoleByIds_KV($rids);
        }
        $result = ["roles" => $new_data, "roleInfo" => $roleInfo];

        return ["code" => SUCCESS, "data" => $result];
    }


    /**
     * 配置角色下的用户数据，当前的做法是，
     * 每次更新都先把roleId匹配的数据全部标记删除
     * 然后批量插入新的配置的用户数据
     *
     * @param $rid
     * @param array $userIds
     * @return array
     */
    public function AssignRoleUsers($rid, array $userIds)
    {
        if ($rid < 1) {
            return ["code" => INVALID_ROLE_ID];
        }

        // 删除当前角色所有的用户
        $this->where("role_id", $rid)->where("is_del", false)->update(["is_del" => true]);

        // 过滤掉无效的userId
        $userModel = new User();
        $validUsers = $userModel->select("id")->whereIn("id", $userIds)->where("is_del", false)->get();
        $validUids = [];
        foreach ($validUsers as $validUser) {
            array_push($validUids, $validUser["id"]);
        }
        if (count($validUids) < 1) {
            return ["code" => SUCCESS, "data" => ["users" => []]];
        }

        // 重新添加指定角色下的用户数据
        $data = [];
        foreach ($validUids as $userId) {
            array_push($data, ["user_id" => $userId, "role_id" => $rid]);
        }
        $this->insert($data);

        //查出批量插入的数据，并返回给前端
        $new_data = $this->select("id", "user_id", "role_id", "status")->where("role_id", $rid)->where("is_del", false)
            ->orderBy("user_id", "asc")->get();
        $uids = [];
        foreach ($new_data as $nd) {
            array_push($uids, $nd["user_id"]);
        }
        if (count($uids) > 0) {
            $user = new User();
            $userInfo = $user->ListUserByIds_KV($uids);
        }

        $result = ["users" => $new_data, "userInfo" => $userInfo];

        return ["code" => SUCCESS, "data" => $result];
    }

    public function LoadRoleByUid($uid)
    {
        $role = $this->select("user_id", "role_id", "status")
            ->where("user_id", $uid)
            ->where("is_del", false)
            ->first();

        return $role;
    }

    /**
     * 加载指定用户拥有的角色信息
     *
     * @param $uid
     * @return array
     */
    public function LoadRole($uid)
    {
        $roles = $this->select("id", "user_id", "role_id", "status")
            ->where("user_id", $uid)->where("is_del", false)->get();
        if (count($roles) == 0) {
            return ["code" => 0, "data" => []];
        }
        $roleIds = [];
        foreach ($roles as $role) {
            array_push($roleIds, $role["role_id"]);
        }

        // 加載角色的信息
        $role = new Role();
        $roleInfo = $role->LoadRoleByIds_KV($roleIds);

        $result = ["roleUsers" => $roles, "roleInfo" => $roleInfo];

        return ["code" => SUCCESS, "data" => $result];
    }

    /**
     * 根据角色id，列出用户-角色数据
     *
     * @param array $rids 多个角色id
     * @return array
     */
    public function LoadUsersWithRoles(array $rids)
    {
        $userRoles = $this->select("id", "user_id", "role_id", "status")
            ->whereIn("role_id", $rids)->where("is_del", false)
            ->get();
        if (count($userRoles) == 0) {
            return [];
        }
        // 根据不同角色收集各自的user_id,同时收集所有的用户id，用于查出用户信息
        $allUids = [];
        $roleUsers = [];
        foreach ($userRoles as $userRole) {
            $key = $userRole["role_id"];
            $userId = $userRole["user_id"];

            if (!key_exists($key, $roleUsers)) {
                $roleUsers[$key] = [];
            }
            $tmpUsers = $roleUsers[$key];
            array_push($tmpUsers, $userId);
            $roleUsers[$key] = $tmpUsers;
            array_push($allUids, $userId);
        }

        // 这个if正常情况下是不会进入的，前面已经有if了。
        if (count($allUids) == 0) {
            return [];
        }

        // load user info
        $userObj = new User();
        $userInfo = $userObj->ListUserByIds_KV($allUids);


        $result = [];
        // 每个角色分别收取自己拥有的用户信息
        foreach ($roleUsers as $roleId => $uids) {
            $tmpUsers = [];
            foreach ($uids as $uid) {
                if (!key_exists($uid, $userInfo)) {
                    continue;
                }
                array_push($tmpUsers, $userInfo[$uid]);
            }
            $result[$roleId] = $tmpUsers;
        }
        return $result;
    }
}