<?php

namespace App\Http\Controllers;

use App\Services\MessageSyncService;
use App\Services\EventConsumerSyncService;
use Illuminate\Http\Request;
use Illuminate\Http\JsonResponse;
use Illuminate\Validation\ValidationException;
use Carbon\Carbon;

class MessageSyncController extends Controller
{
    private MessageSyncService $messageSyncService;
    private EventConsumerSyncService $eventConsumerSyncService;

    public function __construct(
        MessageSyncService $messageSyncService,
        EventConsumerSyncService $eventConsumerSyncService
    ) {
        $this->messageSyncService = $messageSyncService;
        $this->eventConsumerSyncService = $eventConsumerSyncService;
    }


    /**
     * 批量查询消息数据
     */
    public function queryMessages(Request $request): JsonResponse
    {
        try {
            $request->validate([
                'message_ids' => 'required|array|min:1',
                'message_ids.*' => 'required|string|max:255',
            ]);

            $messageIds = array_filter(array_map('trim', $request->input('message_ids')));

            if (empty($messageIds)) {
                return response()->json([
                    'success' => false,
                    'message' => '请提供有效的消息ID列表'
                ], 400);
            }

            // 验证消息ID格式
            $validationErrors = $this->messageSyncService->validateMessageIds($messageIds);
            if (!empty($validationErrors)) {
                return response()->json([
                    'success' => false,
                    'message' => '消息ID格式验证失败',
                    'errors' => $validationErrors
                ], 400);
            }

            // 查询消息数据
            $messages = $this->messageSyncService->getMessagesByIds($messageIds);
            $stats = $this->messageSyncService->getMessageStats($messageIds);

            return response()->json([
                'success' => true,
                'data' => [
                    'messages' => $messages,
                    'stats' => $stats
                ]
            ]);

        } catch (ValidationException $e) {
            return response()->json([
                'success' => false,
                'message' => '请求参数验证失败',
                'errors' => $e->errors()
            ], 422);
        } catch (\Exception $e) {
            return response()->json([
                'success' => false,
                'message' => '查询消息失败: ' . $e->getMessage()
            ], 500);
        }
    }

    /**
     * 执行消息同步
     */
    public function syncMessages(Request $request): JsonResponse
    {
        try {
            $request->validate([
                'message_ids' => 'required|array|min:1',
                'message_ids.*' => 'required|string|max:255',
            ]);

            $messageIds = array_filter(array_map('trim', $request->input('message_ids')));

            if (empty($messageIds)) {
                return response()->json([
                    'success' => false,
                    'message' => '请提供有效的消息ID列表'
                ], 400);
            }

            // 验证消息ID格式
            $validationErrors = $this->messageSyncService->validateMessageIds($messageIds);
            if (!empty($validationErrors)) {
                return response()->json([
                    'success' => false,
                    'message' => '消息ID格式验证失败',
                    'errors' => $validationErrors
                ], 400);
            }

            // 执行同步
            $results = $this->messageSyncService->syncMessages($messageIds);

            // 统计同步结果
            $successCount = count(array_filter($results, fn($r) => $r['success']));
            $failureCount = count($results) - $successCount;

            return response()->json([
                'success' => true,
                'data' => [
                    'results' => $results,
                    'summary' => [
                        'total' => count($results),
                        'success' => $successCount,
                        'failure' => $failureCount
                    ]
                ]
            ]);

        } catch (ValidationException $e) {
            return response()->json([
                'success' => false,
                'message' => '请求参数验证失败',
                'errors' => $e->errors()
            ], 422);
        } catch (\Exception $e) {
            return response()->json([
                'success' => false,
                'message' => '消息同步失败: ' . $e->getMessage()
            ], 500);
        }
    }

    /**
     * 获取agent配置信息
     */
    public function getAgentConfig(): JsonResponse
    {
        try {
            $config = [
                'agent_url' => config('services.agent.url'),
                'timeout' => config('services.agent.timeout', 30),
            ];

            return response()->json([
                'success' => true,
                'data' => $config
            ]);
        } catch (\Exception $e) {
            return response()->json([
                'success' => false,
                'message' => '获取配置失败: ' . $e->getMessage()
            ], 500);
        }
    }

    /**
     * 测试数据库连接
     */
    public function testConnection(): JsonResponse
    {
        try {
            // 测试crmslave数据库连接
            $connection = \DB::connection('crmslave');
            $connection->getPdo();

            // 测试表是否存在
            $tableExists = $connection->getSchemaBuilder()->hasTable('system_publish_event');

            return response()->json([
                'success' => true,
                'data' => [
                    'connection' => 'ok',
                    'table_exists' => $tableExists
                ]
            ]);
        } catch (\Exception $e) {
            return response()->json([
                'success' => false,
                'message' => '数据库连接测试失败: ' . $e->getMessage()
            ], 500);
        }
    }

    /**
     * 对比CRM和Agent的事件消费者消息同步状态
     */
    public function compareEventConsumerSync(Request $request): JsonResponse
    {
        try {
            $request->validate([
                'start_time' => 'nullable|date_format:Y-m-d H:i:s',
                'end_time' => 'nullable|date_format:Y-m-d H:i:s',
                'message_name' => 'nullable|string|max:255',
                'exclude_messages' => 'nullable|array',
                'exclude_messages.*' => 'string|max:255',
            ]);

            $startTime = $request->input('start_time')
                ? Carbon::createFromFormat('Y-m-d H:i:s', $request->input('start_time'))
                : null;

            $endTime = $request->input('end_time')
                ? Carbon::createFromFormat('Y-m-d H:i:s', $request->input('end_time'))
                : null;

            $messageName = $request->input('message_name');
            $excludeMessages = $request->input('exclude_messages', []);

            $result = $this->eventConsumerSyncService->compareSyncStatus(
                $startTime,
                $endTime,
                $excludeMessages,
                $messageName
            );

            return response()->json([
                'success' => true,
                'data' => $result
            ]);

        } catch (ValidationException $e) {
            return response()->json([
                'success' => false,
                'message' => '请求参数验证失败',
                'errors' => $e->errors()
            ], 422);
        } catch (\Exception $e) {
            return response()->json([
                'success' => false,
                'message' => '对比消息同步状态失败: ' . $e->getMessage()
            ], 500);
        }
    }

    /**
     * 导出缺失的消息为Excel
     */
    public function exportMissingMessages(Request $request): JsonResponse
    {
        try {
            $request->validate([
                'start_time' => 'nullable|date_format:Y-m-d H:i:s',
                'end_time' => 'nullable|date_format:Y-m-d H:i:s',
                'exclude_messages' => 'nullable|array',
                'exclude_messages.*' => 'string|max:255',
            ]);

            $startTime = $request->input('start_time')
                ? Carbon::createFromFormat('Y-m-d H:i:s', $request->input('start_time'))
                : null;

            $endTime = $request->input('end_time')
                ? Carbon::createFromFormat('Y-m-d H:i:s', $request->input('end_time'))
                : null;

            $excludeMessages = $request->input('exclude_messages', []);

            $result = $this->eventConsumerSyncService->compareSyncStatus(
                $startTime,
                $endTime,
                $excludeMessages
            );

            $missingMessages = $result['missing_messages'];

            if (empty($missingMessages)) {
                return response()->json([
                    'success' => true,
                    'message' => '没有缺失的消息',
                    'data' => []
                ]);
            }

            // 生成CSV数据
            $csv = "msg_id,event_name,msg_body,created,updated\n";
            foreach ($missingMessages as $msg) {
                $csv .= sprintf(
                    '"%s","%s","%s","%s","%s"' . "\n",
                    $msg['msg_id'],
                    $msg['event_name'],
                    str_replace('"', '""', $msg['msg_body']),
                    $msg['created'],
                    $msg['updated']
                );
            }

            return response()->json([
                'success' => true,
                'data' => [
                    'csv' => $csv,
                    'filename' => 'missing_messages_' . date('YmdHis') . '.csv',
                    'count' => count($missingMessages)
                ]
            ]);

        } catch (ValidationException $e) {
            return response()->json([
                'success' => false,
                'message' => '请求参数验证失败',
                'errors' => $e->errors()
            ], 422);
        } catch (\Exception $e) {
            return response()->json([
                'success' => false,
                'message' => '导出消息失败: ' . $e->getMessage()
            ], 500);
        }
    }
}