<?php

namespace app\controller;

use Webman\Http\Request;
use Webman\Http\Response;
use app\service\ApprovalService;
use app\model\CompanyFeishuApp;
use app\model\User;
use app\model\UserFeishuApp;

/**
 * 飞书消息卡片回调控制器
 * 处理飞书卡片的 URL 验证和用户交互
 */
class FeishuCardController extends BaseController
{
    /**
     * 飞书卡片回调接口
     * 处理两种类型的请求：
     * 1. url_verification - URL 验证
     * 2. card.callback - 卡片按钮点击回调
     */
    public function callback(Request $request): Response
    {
        $body = $request->rawBody();
        $data = json_decode($body, true);

        error_log('📥 飞书卡片回调: ' . json_encode($data, JSON_UNESCAPED_UNICODE));

        if (!$data) {
            error_log('❌ 无效的 JSON 数据');
            return $this->json(['code' => -1, 'msg' => 'Invalid JSON']);
        }

        // 获取事件类型
        $eventType = $data['type'] ?? $data['header']['event_type'] ?? '';

        // URL 验证
        if ($eventType === 'url_verification') {
            return $this->handleUrlVerification($data);
        }

        // 卡片交互回调 - 兼容两种格式
        if ($eventType === 'card.callback' || $eventType === 'card.action.trigger') {
            return $this->handleCardCallback($data);
        }

        error_log('❌ 未知的回调类型: ' . $eventType);
        return $this->json(['code' => -1, 'msg' => 'Unknown callback type']);
    }

    /**
     * 处理 URL 验证请求
     * 飞书在配置回调地址时会先验证 URL 的有效性
     */
    private function handleUrlVerification(array $data): Response
    {
        $challenge = $data['challenge'] ?? '';

        if (!$challenge) {
            error_log('❌ URL 验证缺少 challenge');
            return $this->json(['code' => -1, 'msg' => 'Missing challenge']);
        }

        error_log('✅ URL 验证成功');

        // URL 验证需要直接返回 challenge，不用包装
        $response = json_encode(['challenge' => $challenge]);
        return response($response, 200, ['Content-Type' => 'application/json']);
    }

    /**
     * 处理卡片按钮点击回调
     * 支持两种格式：
     * 1. 简单格式: {type: 'card.callback', token: {...}, action: {...}, operator: {...}}
     * 2. 飞书实际格式: {header: {event_type: 'card.action.trigger'}, event: {operator: {...}, token: {...}, action: {...}}}
     */
    private function handleCardCallback(array $data): Response
    {
        try {
            // 兼容两种格式
            $isEventFormat = isset($data['header']['event_type']);

            if ($isEventFormat) {
                // 飞书实际格式: {header: {...}, event: {...}}
                $eventData = $data['event'] ?? [];
                $operator = $eventData['operator'] ?? [];
                $action = $eventData['action'] ?? [];
                // 从 header 获取 app_id 和 msg_token
                $appId = $data['header']['app_id'] ?? null;
                $msgToken = $eventData['token'] ?? null;
            } else {
                // 简单格式: {token: {...}, action: {...}, operator: {...}}
                $token = $data['token'] ?? [];
                $appId = $token['app_id'] ?? null;
                $operator = $data['operator'] ?? [];
                $action = $data['action'] ?? [];
                $msgToken = null;
            }

            if (!$appId) {
                error_log('❌ 缺少 app_id');
                return $this->errorCard('无效的应用');
            }

            // 查找飞书应用配置
            $feishuApp = CompanyFeishuApp::where('app_id', $appId)
                ->where('status', 1)
                ->first();

            if (!$feishuApp) {
                error_log('❌ 飞书应用不存在: ' . $appId);
                return $this->errorCard('应用配置不存在');
            }

            // 获取 action value 和 form value（表单提交时）
            $actionValue = $action['value'] ?? [];
            $formValue = $action['form_value'] ?? [];

            // 合并按钮值和表单值（表单值优先）
            $actionValue = array_merge($actionValue, $formValue);

            $openId = $operator['open_id'] ?? null;

            if (!$openId) {
                error_log('❌ 缺少 open_id');
                return $this->errorCard('无法识别用户');
            }

            // 根据 open_id 查找用户
            $userBinding = UserFeishuApp::where('feishu_open_id', $openId)
                ->where('company_id', $feishuApp->company_id)
                ->where('feishu_app_id', $feishuApp->id)
                ->first();

            if (!$userBinding) {
                error_log('❌ 用户未绑定飞书应用: open_id=' . $openId);
                return $this->errorCard('用户未登录，请先登录系统');
            }

            $user = User::find($userBinding->user_id);
            if (!$user || $user->status !== 1) {
                error_log('❌ 用户不存在或已禁用: user_id=' . ($userBinding->user_id ?? 'null'));
                return $this->errorCard('用户不存在或已被禁用');
            }

            // 处理不同类型的操作
            $actionType = $actionValue['action_type'] ?? '';

            error_log('🎯 卡片操作类型: ' . $actionType . ', user_id: ' . $user->id . ', msg_token: ' . ($msgToken ?? 'null'));

            switch ($actionType) {
                case 'approve':
                    return $this->handleApprove($user, $actionValue, $msgToken);

                case 'reject':
                    return $this->handleReject($user, $actionValue, $msgToken);

                default:
                    error_log('❌ 未知的操作类型: ' . $actionType);
                    return $this->errorCard('未知的操作类型');
            }

        } catch (\Exception $e) {
            error_log('❌ 处理卡片回调异常: ' . $e->getMessage());
            return $this->errorCard('处理失败: ' . $e->getMessage());
        }
    }

    /**
     * 处理审批通过
     */
    private function handleApprove(User $user, array $actionValue, ?string $msgToken = null): Response
    {
        $orderId = $actionValue['order_id'] ?? null;
        $remark = $actionValue['remark'] ?? ''; // 从表单获取备注

        if (!$orderId) {
            error_log('❌ 缺少 order_id');
            return $this->errorCard('缺少审批单ID');
        }

        try {
            $approvalService = new ApprovalService();

            // 检查用户是否有权限审批
            $order = \app\model\ApprovalOrder::find($orderId);
            if (!$order) {
                error_log('❌ 审批单不存在: order_id=' . $orderId);
                return $this->errorCard('审批单不存在');
            }

            error_log('📝 开始审批通过: order_id=' . $orderId . ', user_id=' . $user->id . ', remark=' . $remark);

            // 执行审批通过
            $approvalService->approve($orderId, $user->id, $remark);

            error_log('✅ 审批通过成功，准备返回卡片');
            $response = $this->successCard('审批通过', $this->buildApproveContent($user, $order, $remark));
            error_log('✅ 卡片响应已生成');
            return $response;

        } catch (\Exception $e) {
            error_log('❌ 审批通过异常: ' . $e->getMessage() . ', file: ' . $e->getFile() . ', line: ' . $e->getLine());
            return $this->errorCard('审批失败: ' . $e->getMessage());
        }
    }

    /**
     * 构建审批通过后的卡片内容
     */
    private function buildApproveContent(User $user, \app\model\ApprovalOrder $order, string $remark = ''): string
    {
        $applicant = \app\model\User::find($order->applicant_id);
        $applicantName = $applicant ? $applicant->name : '未知';

        // 获取订单类型名称
        $typeName = $order->type ?? '申请';

        $parts = [
            "{$user->name} 已通过该申请",
            "",
            "**申请人**: {$applicantName}",
            "**申请单号**: #{$order->id}",
            "**申请类型**: {$typeName}",
        ];

        // 如果有备注，添加备注
        if ($remark) {
            $parts[] = "**审批备注**: {$remark}";
        }

        // 如果有额外数据，添加更多细节
        if ($order->data) {
            $data = json_decode($order->data, true);
            if (is_array($data)) {
                // 添加一些关键信息
                if (!empty($data['reason'])) {
                    $parts[] = "**申请事由**: {$data['reason']}";
                }
                if (!empty($data['start_date'])) {
                    $parts[] = "**开始时间**: {$data['start_date']}";
                }
                if (!empty($data['end_date'])) {
                    $parts[] = "**结束时间**: {$data['end_date']}";
                }
            }
        }

        $parts[] = "";
        $parts[] = "_操作时间: " . date('Y-m-d H:i:s') . "_";

        return implode("\n", $parts);
    }

    /**
     * 处理审批拒绝
     */
    private function handleReject(User $user, array $actionValue, ?string $msgToken = null): Response
    {
        $orderId = $actionValue['order_id'] ?? null;
        $reason = $actionValue['remark'] ?? '已拒绝'; // 从表单获取备注，没有则用默认值

        if (!$orderId) {
            error_log('❌ 缺少 order_id');
            return $this->errorCard('缺少审批单ID');
        }

        try {
            $approvalService = new ApprovalService();

            // 检查用户是否有权限审批
            $order = \app\model\ApprovalOrder::find($orderId);
            if (!$order) {
                error_log('❌ 审批单不存在: order_id=' . $orderId);
                return $this->errorCard('审批单不存在');
            }

            error_log('📝 开始审批拒绝: order_id=' . $orderId . ', user_id=' . $user->id . ', reason=' . $reason);

            // 执行审批拒绝
            $approvalService->reject($orderId, $user->id, $reason);

            error_log('✅ 审批拒绝成功，准备返回卡片');
            $response = $this->successCard('已拒绝', $this->buildRejectContent($user, $order, $reason));
            error_log('✅ 卡片响应已生成');
            return $response;

        } catch (\Exception $e) {
            error_log('❌ 审批拒绝异常: ' . $e->getMessage() . ', file: ' . $e->getFile() . ', line: ' . $e->getLine());
            return $this->errorCard('审批失败: ' . $e->getMessage());
        }
    }

    /**
     * 构建拒绝成功后的卡片内容
     */
    private function buildRejectContent(User $user, \app\model\ApprovalOrder $order, string $reason): string
    {
        $applicant = \app\model\User::find($order->applicant_id);
        $applicantName = $applicant ? $applicant->name : '未知';

        $parts = [
            "{$user->name} 已拒绝该申请",
            "",
            "**申请人**: {$applicantName}",
            "**申请单号**: #{$order->id}",
        ];

        // 如果有拒绝原因，显示
        if ($reason && $reason !== '已拒绝') {
            $parts[] = "**拒绝原因**: {$reason}";
        }

        return implode("\n", $parts);
    }

    /**
     * 返回成功卡片（更新原卡片）
     * 飞书卡片回调响应格式：
     * https://open.feishu.cn/document/feishu-cards/card-callback-communication
     */
    private function successCard(string $title, string $content, ?string $msgToken = null): Response
    {
        // 检查内容是否已包含操作时间（如果包含时间戳则不再添加）
        $hasTime = strpos($content, '操作时间') !== false;

        $elements = [
            [
                'tag' => 'div',
                'text' => [
                    'content' => $content,
                    'tag' => 'lark_md',
                ],
            ],
        ];

        // 如果没有操作时间，添加
        if (!$hasTime) {
            $elements[] = [
                'tag' => 'div',
                'text' => [
                    'content' => '_操作时间: ' . date('Y-m-d H:i:s') . '_',
                    'tag' => 'lark_md',
                ],
            ];
        }

        $cardData = [
            'config' => [
                'wide_screen_mode' => false,
            ],
            'header' => [
                'title' => [
                    'content' => $title,
                    'tag' => 'plain_text',
                ],
                'template' => 'green',
            ],
            'elements' => $elements,
        ];

        // 飞书卡片回调的正确响应格式
        $response = [
            'toast' => [
                'type' => 'success',
                'content' => $title,
            ],
            'card' => [
                'type' => 'raw',
                'data' => $cardData,
            ],
        ];

        return $this->json($response);
    }

    /**
     * 返回错误卡片（更新原卡片显示错误）
     */
    private function errorCard(string $message, ?string $msgToken = null): Response
    {
        $cardData = [
            'config' => [
                'wide_screen_mode' => false,
            ],
            'header' => [
                'title' => [
                    'content' => '操作失败',
                    'tag' => 'plain_text',
                ],
                'template' => 'red',
            ],
            'elements' => [
                [
                    'tag' => 'div',
                    'text' => [
                        'content' => $message,
                        'tag' => 'lark_md',
                    ],
                ],
            ],
        ];

        $response = [
            'toast' => [
                'type' => 'error',
                'content' => '操作失败',
            ],
            'card' => [
                'type' => 'raw',
                'data' => $cardData,
            ],
        ];

        return $this->json($response);
    }

    /**
     * 返回 JSON 响应
     */
    private function json(array $data): Response
    {
        $json = json_encode($data, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);

        error_log('📤 飞书卡片响应: ' . $json);

        // 使用原始响应，确保没有任何额外包装
        return response($json, 200, [
            'Content-Type' => 'application/json; charset=utf-8',
        ]);
    }
}