<?php

namespace app\service;

use app\model\User;
use app\model\Company;
use app\util\FeishuUtil;
use app\util\HttpClient;
use Exception;

/**
 * 飞书通知服务
 * 提供多种卡片类型的消息通知功能
 */
class FeishuNotificationService
{
    private ?int $companyId = null;
    private ?int $appId = null;

    /**
     * 设置当前操作的公司
     */
    public function setCompany(int $companyId): self
    {
        $this->companyId = $companyId;
        return $this;
    }

    /**
     * 设置飞书应用ID（支持多应用）
     */
    public function setApp(int $appId): self
    {
        $this->appId = $appId;
        return $this;
    }

    /**
     * 获取飞书应用配置
     */
    private function getAppConfig(): array
    {
        if (!$this->companyId) {
            throw new Exception('未设置公司ID');
        }

        if ($this->appId) {
            $app = \app\model\CompanyFeishuApp::find($this->appId);
            if (!$app || $app->status !== 1) {
                throw new Exception('飞书应用配置不存在');
            }
            return $app->toArray();
        }

        $app = \app\model\CompanyFeishuApp::where('company_id', $this->companyId)
            ->where('system_id', 1)
            ->where('status', 1)
            ->orderBy('sort')
            ->first();

        if (!$app) {
            throw new Exception('未配置飞书应用');
        }

        return $app->toArray();
    }

    /**
     * 获取 access_token
     */
    private function getAccessToken(): string
    {
        $app = $this->getAppConfig();
        return FeishuUtil::getAppAccessToken($app['id']);
    }

    /**
     * 发送审批通知
     *
     * @param array $params
     *   - user_id: 接收人ID
     *   - title: 通知标题
     *   - applicant: 申请人姓名
     *   - type: 申请类型
     *   - content: 申请内容摘要
     *   - url: 详情链接
     *   - approve_url: 通过按钮链接（可选）
     *   - reject_url: 拒绝按钮链接（可选）
     * @return bool
     */
    public function sendApprovalNotification(array $params): bool
    {
        $userId = $params['user_id'] ?? null;
        if (!$userId) {
            error_log('❌ sendApprovalNotification: 缺少 user_id');
            return false;
        }

        try {
            $user = User::find($userId);
            if (!$user || !$user->feishu_user_id) {
                error_log("❌ sendApprovalNotification: 用户不存在或未绑定飞书, user_id={$userId}");
                return false;
            }

            $card = $this->buildApprovalCard($params);
            return $this->sendMessage($user->feishu_user_id, $card);
        } catch (Exception $e) {
            error_log('❌ sendApprovalNotification 失败: ' . $e->getMessage());
            return false;
        }
    }

    /**
     * 发送系统通知
     *
     * @param array $params
     *   - user_ids: 接收人ID数组
     *   - title: 通知标题
     *   - content: 通知内容
     *   - url: 跳转链接（可选）
     * @return array 返回每个用户的发送结果
     */
    public function sendSystemNotification(array $params): array
    {
        $userIds = $params['user_ids'] ?? [];
        if (empty($userIds)) {
            error_log('❌ sendSystemNotification: 缺少 user_ids');
            return [];
        }

        $results = [];
        foreach ($userIds as $userId) {
            try {
                $user = User::find($userId);
                if (!$user || !$user->feishu_user_id) {
                    $results[$userId] = false;
                    continue;
                }

                $card = $this->buildSystemCard($params);
                $results[$userId] = $this->sendMessage($user->feishu_user_id, $card);
            } catch (Exception $e) {
                error_log("❌ sendSystemNotification 失败: user_id={$userId}, error=" . $e->getMessage());
                $results[$userId] = false;
            }
        }

        return $results;
    }

    /**
     * 发送提醒通知
     *
     * @param array $params
     *   - user_id: 接收人ID
     *   - title: 提醒标题
     *   - content: 提醒内容
     *   - level: 提醒级别 (info/warning/urgent)
     *   - url: 跳转链接（可选）
     * @return bool
     */
    public function sendReminderNotification(array $params): bool
    {
        $userId = $params['user_id'] ?? null;
        if (!$userId) {
            error_log('❌ sendReminderNotification: 缺少 user_id');
            return false;
        }

        try {
            $user = User::find($userId);
            if (!$user || !$user->feishu_user_id) {
                error_log("❌ sendReminderNotification: 用户不存在或未绑定飞书, user_id={$userId}");
                return false;
            }

            $card = $this->buildReminderCard($params);
            return $this->sendMessage($user->feishu_user_id, $card);
        } catch (Exception $e) {
            error_log('❌ sendReminderNotification 失败: ' . $e->getMessage());
            return false;
        }
    }

    /**
     * 批量发送通知
     *
     * @param array $params
     *   - user_ids: 接收人ID数组
     *   - type: 通知类型 (approval/system/reminder)
     *   - 其他参数根据类型不同而不同
     * @return array
     */
    public function sendBatchNotification(array $params): array
    {
        $userIds = $params['user_ids'] ?? [];
        $type = $params['type'] ?? 'system';

        $results = [];
        foreach ($userIds as $userId) {
            $notifyParams = array_merge($params, ['user_id' => $userId]);
            unset($notifyParams['user_ids']);

            switch ($type) {
                case 'approval':
                    $results[$userId] = $this->sendApprovalNotification($notifyParams);
                    break;
                case 'reminder':
                    $results[$userId] = $this->sendReminderNotification($notifyParams);
                    break;
                case 'system':
                default:
                    $results[$userId] = $this->sendSystemNotification(['user_ids' => [$userId]] + $params)[$userId] ?? false;
                    break;
            }
        }

        return $results;
    }

    /**
     * 构建审批通知卡片
     */
    private function buildApprovalCard(array $params): array
    {
        $title = $params['title'] ?? '新的审批申请';
        $applicant = $params['applicant'] ?? '未知';
        $type = $params['type'] ?? '申请';
        $content = $params['content'] ?? '';
        $url = $params['url'] ?? '';
        $approveUrl = $params['approve_url'] ?? '';
        $rejectUrl = $params['reject_url'] ?? '';

        $elements = [
            [
                'tag' => 'div',
                'fields' => [
                    [
                        'is_short' => true,
                        'text' => [
                            'content' => "**申请人**: {$applicant}",
                            'tag' => 'lark_md',
                        ],
                    ],
                    [
                        'is_short' => true,
                        'text' => [
                            'content' => "**申请类型**: {$type}",
                            'tag' => 'lark_md',
                        ],
                    ],
                ],
            ],
        ];

        if ($content) {
            $elements[] = [
                'tag' => 'div',
                'text' => [
                    'content' => "**申请内容**:\n{$content}",
                    'tag' => 'lark_md',
                ],
            ];
        }

        // 构建操作按钮
        $actions = [];

        if ($approveUrl) {
            $actions[] = [
                'tag' => 'button',
                'text' => [
                    'content' => '通过',
                    'tag' => 'plain_text',
                ],
                'type' => 'primary',
                'url' => $approveUrl,
            ];
        }

        if ($rejectUrl) {
            $actions[] = [
                'tag' => 'button',
                'text' => [
                    'content' => '拒绝',
                    'tag' => 'plain_text',
                ],
                'type' => 'default',
                'url' => $rejectUrl,
            ];
        }

        if ($url) {
            $actions[] = [
                'tag' => 'button',
                'text' => [
                    'content' => '查看详情',
                    'tag' => 'plain_text',
                ],
                'type' => 'default',
                'url' => $url,
            ];
        }

        if (!empty($actions)) {
            $elements[] = [
                'tag' => 'action',
                'actions' => $actions,
            ];
        }

        return [
            'header' => [
                'title' => [
                    'content' => "📋 {$title}",
                    'tag' => 'plain_text',
                ],
                'template' => 'blue',
            ],
            'elements' => $elements,
        ];
    }

    /**
     * 构建系统通知卡片
     */
    private function buildSystemCard(array $params): array
    {
        $title = $params['title'] ?? '系统通知';
        $content = $params['content'] ?? '';
        $url = $params['url'] ?? '';

        $elements = [];

        if ($content) {
            $elements[] = [
                'tag' => 'div',
                'text' => [
                    'content' => $content,
                    'tag' => 'plain_text',
                ],
            ];
        }

        if ($url) {
            $elements[] = [
                'tag' => 'action',
                'actions' => [
                    [
                        'tag' => 'button',
                        'text' => [
                            'content' => '查看详情',
                            'tag' => 'plain_text',
                        ],
                        'type' => 'default',
                        'url' => $url,
                    ],
                ],
            ];
        }

        return [
            'header' => [
                'title' => [
                    'content' => "🔔 {$title}",
                    'tag' => 'plain_text',
                ],
                'template' => 'gray',
            ],
            'elements' => $elements,
        ];
    }

    /**
     * 构建提醒通知卡片
     */
    private function buildReminderCard(array $params): array
    {
        $title = $params['title'] ?? '提醒';
        $content = $params['content'] ?? '';
        $level = $params['level'] ?? 'info'; // info, warning, urgent
        $url = $params['url'] ?? '';

        // 根据级别选择模板颜色
        $templateMap = [
            'info' => 'blue',
            'warning' => 'orange',
            'urgent' => 'red',
        ];
        $template = $templateMap[$level] ?? 'blue';

        // 根据级别选择图标
        $iconMap = [
            'info' => '💡',
            'warning' => '⚠️',
            'urgent' => '🚨',
        ];
        $icon = $iconMap[$level] ?? '💡';

        $elements = [];

        if ($content) {
            $elements[] = [
                'tag' => 'div',
                'text' => [
                    'content' => $content,
                    'tag' => 'plain_text',
                ],
            ];
        }

        if ($url) {
            $elements[] = [
                'tag' => 'action',
                'actions' => [
                    [
                        'tag' => 'button',
                        'text' => [
                            'content' => '查看',
                            'tag' => 'plain_text',
                        ],
                        'type' => 'primary',
                        'url' => $url,
                    ],
                ],
            ];
        }

        return [
            'header' => [
                'title' => [
                    'content' => "{$icon} {$title}",
                    'tag' => 'plain_text',
                ],
                'template' => $template,
            ],
            'elements' => $elements,
        ];
    }

    /**
     * 发送消息到飞书
     */
    private function sendMessage(string $feishuUserId, array $card): bool
    {
        try {
            $token = $this->getAccessToken();

            $response = HttpClient::httpPost(
                "https://open.feishu.cn/open-apis/message/v4/send_messages",
                [
                    'receive_id_type' => 'user_id',
                    'receive_id' => $feishuUserId,
                    'msg_type' => 'interactive',
                    'content' => json_encode(['card' => $card]),
                ],
                [
                    'Authorization: Bearer ' . $token,
                ]
            );

            $code = $response['code'] ?? -1;
            $success = $code === 0;

            if ($success) {
                error_log("✅ 飞书消息发送成功: feishu_user_id={$feishuUserId}");
            } else {
                error_log("❌ 飞书消息发送失败: feishu_user_id={$feishuUserId}, code={$code}, msg=" . ($response['msg'] ?? ''));
            }

            return $success;
        } catch (Exception $e) {
            error_log('❌ sendMessage 异常: ' . $e->getMessage());
            return false;
        }
    }
}