<?php

declare(strict_types=1);

namespace app\common\library;

use app\common\model\MallDailyPush;
use app\common\model\MallUserAsset;
use ba\Random;
use RuntimeException;
use support\think\Db;
use Throwable;

/**
 * 将 daily_push_*.log 中保存的第三方原始推送幂等回放到业务表。
 */
class MallDailyPushLogReplay
{
    private const QUERY_CHUNK_SIZE = 1000;

    /**
     * @return array<string, mixed>
     */
    public function replay(string $logFile, bool $dryRun = false): array
    {
        $stats = $this->newStats($logFile, $dryRun);
        $records = $this->parseRecords($logFile, $stats);
        $stats['unique_members'] = count($records);

        [$dailyMap, $assetByPlayxId, $assetByUsername] = $this->preloadExistingData($records);
        $ratios = MallPlayxRatios::get();
        $returnRatio = floatval($ratios['return_ratio'] ?? 0);
        $unlockRatio = floatval($ratios['unlock_ratio'] ?? 0);
        [$backupHandle, $backupPath] = $this->openBackup($dryRun);
        $stats['backup_file'] = $backupPath;

        try {
            foreach ($records as $key => $record) {
                try {
                    $daily = $dailyMap[$key] ?? null;
                    $asset = $assetByPlayxId[$record['user_id']]
                        ?? ($record['username'] !== '' ? ($assetByUsername[$record['username']] ?? null) : null);

                    $result = $this->replayRecord(
                        $record,
                        $daily,
                        $asset,
                        $returnRatio,
                        $unlockRatio,
                        $dryRun,
                        $backupHandle,
                        $stats
                    );
                    if ($result['daily']) {
                        $dailyMap[$key] = $result['daily'];
                    }
                    if ($result['asset']) {
                        $assetByPlayxId[$record['user_id']] = $result['asset'];
                        if ($record['username'] !== '') {
                            $assetByUsername[$record['username']] = $result['asset'];
                        }
                    }
                } catch (Throwable $e) {
                    $stats['failed_members']++;
                    $this->appendError($stats, 'user_id=' . $record['user_id'] . '：' . $e->getMessage());
                }
            }
        } finally {
            if (is_resource($backupHandle)) {
                fclose($backupHandle);
            }
        }

        return $stats;
    }

    /**
     * @return array<string, mixed>
     */
    private function newStats(string $logFile, bool $dryRun): array
    {
        return [
            'dry_run' => $dryRun,
            'log_file' => $logFile,
            'backup_file' => '',
            'lines' => 0,
            'members' => 0,
            'unique_members' => 0,
            'daily_created' => 0,
            'daily_updated' => 0,
            'daily_unchanged' => 0,
            'assets_created' => 0,
            'assets_updated' => 0,
            'locked_points_delta' => 0,
            'invalid_lines' => 0,
            'failed_members' => 0,
            'errors' => [],
        ];
    }

    /**
     * @param array<string, mixed> $stats
     * @return array<string, array<string, mixed>>
     */
    private function parseRecords(string $logFile, array &$stats): array
    {
        if (!is_file($logFile) || !is_readable($logFile)) {
            throw new RuntimeException('日志文件不存在或不可读：' . $logFile);
        }
        $handle = fopen($logFile, 'rb');
        if ($handle === false) {
            throw new RuntimeException('无法打开日志文件：' . $logFile);
        }

        $records = [];
        try {
            while (($line = fgets($handle)) !== false) {
                $line = trim($line);
                if ($line === '') {
                    continue;
                }
                $stats['lines']++;
                $entry = json_decode($line, true);
                $raw = is_array($entry) ? strval($entry['raw'] ?? '') : '';
                $payload = $raw !== '' ? json_decode($raw, true) : null;
                if (!is_array($payload) || !isset($payload['report_date'], $payload['member']) || !is_array($payload['member'])) {
                    $stats['invalid_lines']++;
                    $this->appendError($stats, '第 ' . strval($stats['lines']) . ' 行格式无效');
                    continue;
                }

                $date = $this->resolveDate($payload['report_date']);
                if ($date === '') {
                    $stats['invalid_lines']++;
                    $this->appendError($stats, '第 ' . strval($stats['lines']) . ' 行 report_date 无效');
                    continue;
                }
                $entryTime = strtotime(strval($entry['time'] ?? ''));
                $createTime = $entryTime === false ? time() : $entryTime;

                foreach ($payload['member'] as $member) {
                    $stats['members']++;
                    if (!is_array($member)) {
                        $stats['failed_members']++;
                        continue;
                    }
                    $userId = trim(strval($member['member_id'] ?? ''));
                    if ($userId === '') {
                        $stats['failed_members']++;
                        $this->appendError($stats, '第 ' . strval($stats['lines']) . ' 行存在空 member_id');
                        continue;
                    }
                    $key = $date . '|' . $userId;
                    $records[$key] = [
                        'user_id' => $userId,
                        'date' => $date,
                        'username' => trim(strval($member['login'] ?? '')),
                        'phone' => trim(strval($member['phone'] ?? ($member['mobile'] ?? ''))),
                        'yesterday_win_loss_net' => $this->numericValue($member, ['yesterday_total_wl', 'yesterday_total_w']),
                        'yesterday_total_deposit' => $this->numericValue($member, ['yesterday_total_deposit']),
                        'lifetime_total_deposit' => $this->numericValue($member, ['ltv_deposit', 'lty_deposit']),
                        'lifetime_total_withdraw' => $this->numericValue($member, ['ltv_withdrawal', 'lty_withdrawal']),
                        'create_time' => $createTime,
                    ];
                }
            }
        } finally {
            fclose($handle);
        }
        return $records;
    }

    /**
     * @param array<string, array<string, mixed>> $records
     * @return array{0:array<string,MallDailyPush>,1:array<string,MallUserAsset>,2:array<string,MallUserAsset>}
     */
    private function preloadExistingData(array $records): array
    {
        $idsByDate = [];
        $userIds = [];
        $usernames = [];
        foreach ($records as $record) {
            $date = $record['date'];
            $userId = $record['user_id'];
            $idsByDate[$date][$userId] = true;
            $userIds[$userId] = true;
            if ($record['username'] !== '') {
                $usernames[$record['username']] = true;
            }
        }

        $dailyMap = [];
        foreach ($idsByDate as $date => $ids) {
            foreach (array_chunk(array_keys($ids), self::QUERY_CHUNK_SIZE) as $idChunk) {
                $rows = MallDailyPush::where('date', $date)->whereIn('user_id', $idChunk)->select();
                foreach ($rows as $row) {
                    /** @var MallDailyPush $row */
                    $dailyMap[$date . '|' . strval($row->user_id)] = $row;
                }
            }
        }

        $assetByPlayxId = [];
        foreach (array_chunk(array_keys($userIds), self::QUERY_CHUNK_SIZE) as $idChunk) {
            $rows = MallUserAsset::whereIn('playx_user_id', $idChunk)->select();
            foreach ($rows as $row) {
                $assetByPlayxId[strval($row->playx_user_id)] = $row;
            }
        }

        $assetByUsername = [];
        foreach (array_chunk(array_keys($usernames), self::QUERY_CHUNK_SIZE) as $usernameChunk) {
            $rows = MallUserAsset::whereIn('username', $usernameChunk)->select();
            foreach ($rows as $row) {
                $assetByUsername[strval($row->username)] = $row;
            }
        }

        return [$dailyMap, $assetByPlayxId, $assetByUsername];
    }

    /**
     * @return array{0:mixed,1:string}
     */
    private function openBackup(bool $dryRun): array
    {
        if ($dryRun) {
            return [null, ''];
        }
        $backupDir = runtime_path('backup/daily_push_replay');
        if (!is_dir($backupDir) && !mkdir($backupDir, 0755, true) && !is_dir($backupDir)) {
            throw new RuntimeException('无法创建回放备份目录');
        }
        $path = $backupDir . DIRECTORY_SEPARATOR . 'before_replay_' . date('Ymd_His') . '.jsonl';
        $handle = fopen($path, 'wb');
        if ($handle === false) {
            throw new RuntimeException('无法创建回放备份文件');
        }
        return [$handle, $path];
    }

    /**
     * @param array<string, mixed> $record
     * @param resource|null $backupHandle
     * @param array<string, mixed> $stats
     * @return array{daily:?MallDailyPush,asset:?MallUserAsset}
     */
    private function replayRecord(
        array $record,
        ?MallDailyPush $daily,
        ?MallUserAsset $asset,
        float $returnRatio,
        float $unlockRatio,
        bool $dryRun,
        $backupHandle,
        array &$stats
    ): array {
        $oldWinLossNet = $daily ? floatval($daily->yesterday_win_loss_net ?? 0) : 0.0;
        $lockedDelta = $this->lockedContribution($record['yesterday_win_loss_net'], $returnRatio)
            - $this->lockedContribution($oldWinLossNet, $returnRatio);
        $todayLimit = intval(round($record['yesterday_total_deposit'] * $unlockRatio));
        $dailyData = [
            'user_id' => $record['user_id'],
            'date' => $record['date'],
            'username' => $record['username'],
            'yesterday_win_loss_net' => $record['yesterday_win_loss_net'],
            'yesterday_total_deposit' => $record['yesterday_total_deposit'],
            'lifetime_total_deposit' => $record['lifetime_total_deposit'],
            'lifetime_total_withdraw' => $record['lifetime_total_withdraw'],
        ];
        $dailyChanged = !$daily || $this->dailyHasChanges($daily, $dailyData);
        $this->countDailyChange($stats, $daily, $dailyChanged);

        $assetWillCreate = !$asset;
        $assetWillUpdate = $assetWillCreate
            || trim(strval($asset->playx_user_id ?? '')) !== $record['user_id']
            || $lockedDelta !== 0
            || ($record['username'] !== '' && trim(strval($asset->username ?? '')) !== $record['username'])
            || ($record['phone'] !== '' && trim(strval($asset->phone ?? '')) === '')
            || $this->shouldUpdateDailyLimit($asset, $record['date'], $todayLimit);
        if ($assetWillCreate) {
            $stats['assets_created']++;
        } elseif ($assetWillUpdate) {
            $stats['assets_updated']++;
        }
        $stats['locked_points_delta'] += $lockedDelta;

        if ($dryRun) {
            return ['daily' => $daily, 'asset' => $asset];
        }
        if (!$dailyChanged && !$assetWillUpdate) {
            return ['daily' => $daily, 'asset' => $asset];
        }

        $this->writeBackup($backupHandle, $record['date'] . '|' . $record['user_id'], $daily, $asset);
        Db::startTrans();
        try {
            if ($daily) {
                if ($dailyChanged) {
                    $daily->save($dailyData);
                }
            } else {
                $dailyData['create_time'] = $record['create_time'];
                $daily = MallDailyPush::create($dailyData);
            }

            if (!$asset) {
                $effectiveUsername = $record['username'] !== '' ? $record['username'] : 'playx_' . $record['user_id'];
                $asset = MallUserAsset::create([
                    'playx_user_id' => $record['user_id'],
                    'username' => $effectiveUsername,
                    'phone' => $record['phone'],
                    'password' => hash_password(Random::build('alnum', 16)),
                    'admin_id' => 0,
                    'locked_points' => 0,
                    'available_points' => 0,
                    'today_limit' => 0,
                    'today_claimed' => 0,
                    'today_limit_date' => null,
                    'create_time' => $record['create_time'],
                    'update_time' => time(),
                ]);
                if (!$asset) {
                    throw new RuntimeException('创建用户资产失败');
                }
                /** @var MallUserAsset $asset */
            } elseif ($assetWillUpdate) {
                $asset->playx_user_id = $record['user_id'];
                if ($record['username'] !== '') {
                    $asset->username = $record['username'];
                }
                if ($record['phone'] !== '' && trim(strval($asset->phone ?? '')) === '') {
                    $asset->phone = $record['phone'];
                }
            }

            if ($assetWillUpdate) {
                if ($lockedDelta !== 0) {
                    $asset->locked_points = max(0, intval($asset->locked_points ?? 0) + $lockedDelta);
                }
                $this->applyDailyLimit($asset, $record['date'], $todayLimit);
                $asset->save();
            }
            Db::commit();
        } catch (Throwable $e) {
            Db::rollback();
            throw $e;
        }

        return ['daily' => $daily, 'asset' => $asset];
    }

    /**
     * @param array<string, mixed> $stats
     */
    private function countDailyChange(array &$stats, ?MallDailyPush $daily, bool $changed): void
    {
        if (!$daily) {
            $stats['daily_created']++;
        } elseif ($changed) {
            $stats['daily_updated']++;
        } else {
            $stats['daily_unchanged']++;
        }
    }

    /**
     * @param array<string, mixed> $member
     * @param array<int, string> $keys
     */
    private function numericValue(array $member, array $keys): float
    {
        foreach ($keys as $key) {
            if (array_key_exists($key, $member) && is_numeric($member[$key])) {
                return round(floatval($member[$key]), 2);
            }
        }
        return 0.0;
    }

    private function resolveDate(mixed $reportDate): string
    {
        if (is_numeric($reportDate)) {
            $timestamp = intval($reportDate);
            return $timestamp > 0 ? date('Y-m-d', $timestamp) : '';
        }
        $date = trim(strval($reportDate));
        $parsed = \DateTime::createFromFormat('Y-m-d', $date);
        return $parsed && $parsed->format('Y-m-d') === $date ? $date : '';
    }

    private function lockedContribution(float $winLossNet, float $returnRatio): int
    {
        return $winLossNet < 0 ? intval(round(abs($winLossNet) * $returnRatio)) : 0;
    }

    /**
     * @param array<string, mixed> $dailyData
     */
    private function dailyHasChanges(MallDailyPush $daily, array $dailyData): bool
    {
        if (trim(strval($daily->username ?? '')) !== $dailyData['username']) {
            return true;
        }
        foreach ([
            'yesterday_win_loss_net',
            'yesterday_total_deposit',
            'lifetime_total_deposit',
            'lifetime_total_withdraw',
        ] as $field) {
            if (abs(floatval($daily->$field ?? 0) - floatval($dailyData[$field])) > 0.000001) {
                return true;
            }
        }
        return false;
    }

    private function shouldUpdateDailyLimit(?MallUserAsset $asset, string $date, int $todayLimit): bool
    {
        if (!$asset) {
            return true;
        }
        $currentDate = trim(strval($asset->today_limit_date ?? ''));
        if ($currentDate !== '' && $currentDate > $date) {
            return false;
        }
        return $currentDate !== $date || intval($asset->today_limit ?? 0) !== $todayLimit;
    }

    private function applyDailyLimit(MallUserAsset $asset, string $date, int $todayLimit): void
    {
        $currentDate = trim(strval($asset->today_limit_date ?? ''));
        if ($currentDate !== '' && $currentDate > $date) {
            return;
        }
        if ($currentDate !== $date) {
            $asset->today_claimed = 0;
            $asset->today_limit_date = $date;
        }
        $asset->today_limit = $todayLimit;
    }

    /**
     * @param resource|null $handle
     */
    private function writeBackup($handle, string $key, ?MallDailyPush $daily, ?MallUserAsset $asset): void
    {
        if (!is_resource($handle)) {
            return;
        }
        $assetData = null;
        if ($asset) {
            $assetData = [
                'id' => $asset->id,
                'playx_user_id' => $asset->playx_user_id,
                'username' => $asset->username,
                'phone' => $asset->phone,
                'locked_points' => $asset->locked_points,
                'today_limit' => $asset->today_limit,
                'today_claimed' => $asset->today_claimed,
                'today_limit_date' => $asset->today_limit_date,
                'update_time' => $asset->update_time,
            ];
        }
        fwrite($handle, json_encode([
            'key' => $key,
            'daily_push' => $daily ? $daily->toArray() : null,
            'user_asset' => $assetData,
        ], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES) . PHP_EOL);
    }

    /**
     * @param array<string, mixed> $stats
     */
    private function appendError(array &$stats, string $message): void
    {
        if (count($stats['errors']) < 100) {
            $stats['errors'][] = $message;
        }
    }
}