<?php

namespace App\Service;

use Illuminate\Support\Facades\Redis;

class DrbService extends Service
{
    const RedisKey = 'DRBACCESSTOKENKEY';

    public function getAccessToken()
    {
        $token = Redis::get(self::RedisKey);
        if(! empty($token)) return [true, ['access_token' => $token]];

        $appKey = config('dingtalk.app_key');
        $appSecret = config('dingtalk.app_secret');
        $url = "https://api.dingtalk.com/v1.0/oauth2/accessToken";
        $resp = $this->curlOpen1($url, [
            'request' => 'post',
            'header'  => ['Content-Type: application/json'],
            'json'    => [
                "appKey"    => $appKey,
                "appSecret" => $appSecret
            ]
        ]);
        $res = json_decode($resp, true);
        $accessToken = $res['accessToken'] ?? "";
        $expires_in = $res['expires_in'] ?? 0;
        if(empty($accessToken)) return [false, 'AccessToken获取失败'];
        Redis::setex(self::RedisKey, $expires_in, $accessToken);

        return [true, ['access_token' => $accessToken]];
    }

    /**
     * 根据前端传来的免登 code 获取用户信息
     * @param string $code 前端 dd.getAuthCode 获取的 code
     * @return array [bool, data]  bool 表示成功与否，data 成功返回用户信息，失败返回错误信息
     */
    public function getUserByCode($data)
    {
        $code = $data['code'] ?? "";
        if (empty($code)) return [false, '钉钉授权code不能为空'];

        // 1. 获取 access_token
        [$success, $tokenData] = $this->getAccessToken();
        if (! $success) return [false, $tokenData]; // tokenData 是错误信息
        $accessToken = $tokenData['access_token'];

        // 2. 用 code 换取用户信息（v2 接口）
        $url = "https://oapi.dingtalk.com/topapi/v2/user/getuserinfo?access_token={$accessToken}";

        $resp = $this->curlOpen1($url, [
            'request' => 'post',
            'header'  => [
                "Content-Type: application/json",
            ],
            'json'    => [
                "code" => $code
            ]
        ]);

        $res = json_decode($resp, true);

        if (!isset($res['errcode'])) {
            return [false, '接口返回异常: ' . $resp];
        }

        if ($res['errcode'] !== 0) {
            return [false, '获取用户信息失败: ' . $res['errmsg']];
        }

        return [true, $res];
    }

    private function getManDetail($user){
        // 1. 获取 access_token
        [$success, $tokenData] = $this->getAccessToken();
        if (! $success) return [false, $tokenData]; // tokenData 是错误信息
        $accessToken = $tokenData['access_token'];

        // 3. 根据 userid 获取详细用户信息（包括部门）
        $urlDetail = "https://oapi.dingtalk.com/topapi/v2/user/get?access_token={$accessToken}";
        $respDetail = $this->curlOpen1($urlDetail, [
            'request' => 'post',
            'header'  => ["Content-Type: application/json"],
            'json'    => ["userid" => $user['userId']]
        ]);
        $detail = json_decode($respDetail, true);

        if (!isset($detail['errcode'])) return [false, '获取用户详情接口异常: ' . $respDetail];
        if ($detail['errcode'] !== 0) return [false, '获取用户详情失败: ' . $detail['errmsg']];
        if (empty($detail['result'])) return [false, '获取用户详情失败，结果为空'];

        // 返回完整用户信息
        return [true, $detail['result']];
    }

    public function createProcessInstance($data, $user)
    {
        if(empty($data['type'])) return [false, '单据类型不能为空'];
        $type = $data['type'];
        $userId = $user['userId'];
        [$success, $userDetail] = $this->getManDetail($user);
        if(!$success) return [false, $userDetail];

        // 1. 获取 access_token
        [$success, $tokenData] = $this->getAccessToken();
        if (!$success) return [false, $tokenData];
        $accessToken = $tokenData['access_token'];

        //获取模板id
        $code = $this->getModelCode($type);
        //获取模板数据
        $formData = $this->getFormData($data);

        //创建审批
        [$success, $msg] = $this->createFlow($accessToken, $code, $userId, $userDetail, $formData);
        if(! $success) return [false, $msg];

        //记录信息

        return [true, ''];
    }

    private function createFlow($accessToken, $code, $userId, $userDetail, $formData){
        // 2. 请求 URL
        $url = "https://oapi.dingtalk.com/topapi/processinstance/create?access_token={$accessToken}";

        // 3. 请求体
        $payload = [
            "process_code" => $code,            // 审批模板编码
            "originator_user_id" => $userId,    // 发起人 userId
            "dept_id" => $userDetail['dept_id_list'],               // 发起人部门 ID
            "form_component_values" => $formData, // 表单数据
        ];

        // 4. 发送请求
        $resp = $this->curlOpen1($url, [
            'request' => 'post',
            'header'  => [
                "Content-Type: application/json",
            ],
            'json'    => $payload
        ]);

        $res = json_decode($resp, true);

        if (!isset($res['errcode'])) {
            return [false, "接口返回异常: " . $resp];
        }

        if ($res['errcode'] !== 0) {
            return [false, "创建审批实例失败: " . $res['errmsg']];
        }

        return [true, $res['process_instance_id']];
    }

    private function getModelCode($type){
        if($type == 1){
            // 采购单
            $code = "PROC-61E1D916-C7BE-4DE2-9D25-63505D8573B1";
        }elseif ($type == 2){
            // 请购单
            $code = "PROC-4FECC44D-993C-48E3-8623-CDC75B467622";
        }else{
            // 付款单
            $code = "PROC-F6D0C212-D8C6-4662-9AFD-EA9DE85A1F14";
        }

        return $code;
    }

    private function getFormData($data){
        $model = [];

        $formData = [
            [
                "name"  => "订单日期",
                "value" => "2025-09-23" // 日期型字段，字符串 yyyy-MM-dd
            ],
            [
                "name"  => "订单编号",
                "value" => "PO20250923001"
            ],
            [
                "name"  => "业务类型",
                "value" => "标准采购"
            ],
            [
                "name"  => "供应商",
                "value" => "XX供应商有限公司"
            ],
            [
                "name"  => "制单人",
                "value" => "陈庆鹏"
            ],
            [
                "name"  => "表格",
                "value" => json_encode([
                    [
                        [
                            "name"  => "存货名称",
                            "value" => "打印机"
                        ],
                        [
                            "name"  => "数量",
                            "value" => "2"
                        ],
                        [
                            "name"  => "主计量单位",
                            "value" => "台"
                        ],
                        [
                            "name"  => "原币价税合计",
                            "value" => "3000"
                        ]
                    ],
                    [
                        [
                            "name"  => "存货名称",
                            "value" => "显示器"
                        ],
                        [
                            "name"  => "数量",
                            "value" => "5"
                        ],
                        [
                            "name"  => "主计量单位",
                            "value" => "个"
                        ],
                        [
                            "name"  => "原币价税合计",
                            "value" => "5000"
                        ]
                    ]
                ], JSON_UNESCAPED_UNICODE) // 表格必须是字符串化的 JSON 数组
            ]
        ];

        return $model;
    }

    private function recordDatabase($data, $user, $process_instance_id){

    }

    public function getTemplateFields($data)
    {
        $processCode = $data['code'] ?? "";
        if (empty($processCode)) {
            return [false, '模板编号 process_code 不能为空'];
        }

        [$ok, $tokenData] = $this->getAccessToken();
        if (! $ok) return [false, $tokenData];
        $accessToken = $tokenData['access_token'];

        // 注意这里是 GET，并且 processCode 是 query 参数
        $url = "https://api.dingtalk.com/v1.0/workflow/forms/schemas/processCodes?processCode={$processCode}";

        $resp = $this->curlOpen1($url, [
            'request' => 'get',
            'header'  => [
                "Content-Type: application/json",
                "x-acs-dingtalk-access-token: {$accessToken}"
            ],
        ]);

        $res = json_decode($resp, true);

        if (isset($res['schemas'])) {
            return [true, $res['schemas']];
        } else {
            return [false, $res];
        }
    }

    protected function curlOpen1($url, $config = [])
    {
        $default = [
            'post' => false,
            'request' => 'get',
            'header' => [],
            'json' => null,
            'timeout' => 30
        ];

        $arr = array_merge($default, $config);

        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_TIMEOUT, $arr['timeout']);
        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);

        if (!empty($arr['header'])) {
            curl_setopt($ch, CURLOPT_HTTPHEADER, $arr['header']);
        }

        if ($arr['post'] || $arr['request'] !== 'get') {
            curl_setopt($ch, CURLOPT_CUSTOMREQUEST, strtoupper($arr['request']));
            if ($arr['json'] !== null) {
                curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($arr['json'], JSON_UNESCAPED_UNICODE));
            }
        }

        $result = curl_exec($ch);
        if ($result === false) {
            $err = curl_error($ch);
            curl_close($ch);
            return json_encode(['error' => $err]);
        }

        curl_close($ch);
        return $result;
    }
}