package com.haobang.config;

import lombok.Data;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

/**
 * syslog-serve 统一应用配置属性
 * 使用 Spring Boot 标准 @Value 机制，支持 docker-compose 环境变量覆盖
 */
@Data
@Component
public class AppProperties {

    // ========== Syslog 配置 ==========
    @Value("${syslog.tcp.port:514}")
    private int syslogTcpPort;

    @Value("${syslog.udp.port:515}")
    private int syslogUdpPort;

    @Value("${syslog.max.frame.length:6291456}")
    private int syslogMaxFrameLength;

    /** 所有接入方式共用的单条原文字节硬上限；0 表示不限制。 */
    @Value("${syslog.message.max-bytes:6291456}")
    private long syslogMessageMaxBytes;

    /** 达到该值投递大日志 Topic；0 表示关闭分流。 */
    @Value("${syslog.large-message.threshold-bytes:131072}")
    private long syslogLargeMessageThresholdBytes;

    @Value("${syslog.buffer.size:1024}")
    private int syslogBufferSize;

    @Value("${syslog.tcp.backlog:4096}")
    private int syslogTcpBacklog;

    @Value("${syslog.tcp.receive-buffer-bytes:4194304}")
    private int syslogTcpReceiveBufferBytes;

    @Value("${syslog.udp.receive-buffer-bytes:16777216}")
    private int syslogUdpReceiveBufferBytes;

    @Value("${syslog.charset:GBK}")
    private String syslogCharset;

    // ========== 接入 WAL 配置 ==========
    /** WAL 是 Kafka 接管前的可靠性边界，正式链路不允许关闭。 */
    @Value("${syslog.wal.enabled:true}")
    private boolean syslogWalEnabled;

    /** 必须挂载到宿主机持久化磁盘；兼容原归档目录环境变量。 */
    @Value("${syslog.wal.directory:${SYSLOG_WAL_DIRECTORY:${SYSLOG_RAW_ARCHIVE_DIRECTORY:/data/syslog-wal}}}")
    private String syslogWalDirectory;

    /** Netty 到 WAL 单写线程之间的有界队列。 */
    @Value("${syslog.wal.queue-capacity:10000}")
    private int syslogWalQueueCapacity;

    /** 队列与待 force 记录共用的内存字节预算；0 表示不限制。 */
    @Value("${syslog.wal.max-pending-bytes:268435456}")
    private long syslogWalMaxPendingBytes;

    @Value("${syslog.wal.high-watermark-percent:70}")
    private int syslogWalHighWatermarkPercent;

    @Value("${syslog.wal.low-watermark-percent:40}")
    private int syslogWalLowWatermarkPercent;

    @Value("${syslog.wal.retry-interval-ms:10}")
    private long syslogWalRetryIntervalMs;

    @Value("${syslog.wal.disk-retry-interval-ms:1000}")
    private long syslogWalDiskRetryIntervalMs;

    /** 累计记录数或时间达到任一条件即 force，Future 只在 force 后视为持久化。 */
    @Value("${syslog.wal.flush-records:200}")
    private int syslogWalFlushRecords;

    @Value("${syslog.wal.flush-interval-ms:200}")
    private long syslogWalFlushIntervalMs;

    @Value("${syslog.wal.segment-max-bytes:268435456}")
    private long syslogWalSegmentMaxBytes;

    /**
     * 已完成并确认投递的 WAL 分段保留天数，默认 2 天；0 表示不自动删除。
     * 启动时立即清理，运行期间随 checkpoint 推进最多每 30 分钟清理一次。
     */
    @Value("${syslog.wal.retention-days:2}")
    private int syslogWalRetentionDays;

    @Value("${syslog.wal.shutdown-timeout-ms:30000}")
    private long syslogWalShutdownTimeoutMs;

    /** ACK 游标允许批量刷盘；崩溃时最多重复投递该批，event_id 保证下游幂等。 */
    @Value("${syslog.wal.checkpoint-flush-records:200}")
    private int syslogWalCheckpointFlushRecords;

    @Value("${syslog.wal.checkpoint-flush-interval-ms:200}")
    private long syslogWalCheckpointFlushIntervalMs;

    /**
     * WAL 所在文件系统的使用率保护线。系统会把该百分比换算为剩余容量，
     * 再与 syslog.wal.min-free-bytes 比较，取较小值作为实际停止接入线。
     */
    @Value("${syslog.wal.disk-high-watermark-percent:90}")
    private int syslogWalDiskHighWatermarkPercent;

    /**
     * 实际停止接入线的容量上限，默认 10GiB。大磁盘最多预留 10GiB，
     * 小磁盘则按使用率保护线对应的更小剩余容量处理。
     */
    @Value("${syslog.wal.min-free-bytes:10737418240}")
    private long syslogWalMinFreeBytes;

    /** 兼容部署阶段关闭；开启后新接入事件必须以 WAL schema v3 固化 point_time_ns。 */
    @Value("${syslog.point-time.write-enabled:false}")
    private boolean syslogPointTimeWriteEnabled;

    // ========== WAL Dispatcher 配置 ==========
    @Value("${syslog.dispatch.worker-threads:4}")
    private int syslogDispatchWorkerThreads;

    @Value("${syslog.dispatch.max-inflight:5000}")
    private int syslogDispatchMaxInflight;

    /** Dispatcher 正文在途字节预算；0 表示不限制。 */
    @Value("${syslog.dispatch.max-inflight-bytes:268435456}")
    private long syslogDispatchMaxInflightBytes;

    @Value("${syslog.dispatch.retry-backoff-ms:1000}")
    private long syslogDispatchRetryBackoffMs;

    @Value("${syslog.dispatch.shutdown-timeout-ms:30000}")
    private long syslogDispatchShutdownTimeoutMs;

    @Value("${syslog.device-context.cache-ttl-ms:300000}")
    private long syslogDeviceContextCacheTtlMs;

    @Value("${syslog.status-log-interval-ms:60000}")
    private long syslogStatusLogIntervalMs;

    // ========== 旧 v1 原文归档精确导入（默认关闭） ==========
    @Value("${syslog.wal.legacy-import.enabled:false}")
    private boolean syslogWalLegacyImportEnabled;

    @Value("${syslog.wal.legacy-import.archive-directory:}")
    private String syslogWalLegacyImportArchiveDirectory;

    /** 一行可写一个 event_id，也可直接粘贴包含 event_id 的拒绝日志。 */
    @Value("${syslog.wal.legacy-import.event-id-file:}")
    private String syslogWalLegacyImportEventIdFile;

    // ========== App Service 配置（探针设备信息）==========
    @Value("${app.service.device_id:}")
    private String appServiceDeviceId;

    @Value("${app.service.device_name:}")
    private String appServiceDeviceName;

    @Value("${app.service.vendor:}")
    private String appServiceVendor;

    @Value("${app.service.product_name:}")
    private String appServiceProductName;

    @Value("${app.service.data_type:json}")
    private String appServiceDataType;

    @Value("${app.service.device_collect_id:1}")
    private int appServiceDeviceCollectId;

    @Value("${app.service.device_collect_name:DevCollect-01}")
    private String appServiceDeviceCollectName;

    // ========== Kafka Producer 配置 ==========
    @Value("${spring.kafka.producer.bootstrap-servers:localhost:9092}")
    private String kafkaProducerBootstrap;

    @Value("${spring.kafka.producer.topic:agent-syslog-topic}")
    private String kafkaProducerTopic;

    @Value("${spring.kafka.producer.large-topic:agent-syslog-topic.large}")
    private String kafkaProducerLargeTopic;

    @Value("${spring.kafka.producer.ack-timeout-ms:130000}")
    private long kafkaProducerAckTimeoutMs;

    // ========== SM4 加密配置 ==========
    @Value("${syslog.sm4.generateKey:}")
    private String sm4Key;
}