package constants

import (
	"fmt"
	"time"
)

// 轮询观测入库异步化（add-polling-async-ingest）：调网关与入库分离，入库单独发消息、单独消费。

// 入库 NSQ topic。
const (
	// NSQCardIngestTopic 轮询观测入库消息（卡状态、流量、实名）。
	NSQCardIngestTopic = "card.ingest"
	// NSQCardCollectionTopic 流量采集记录消息（成功表与失败表），由批量消费者攒批写入。
	NSQCardCollectionTopic = "card.collection"
)

// 入库模式（受控系统配置 polling.ingest.mode）。
const (
	PollingIngestModeSync  = "sync"  // 轮询步骤在卡任务内同步入库（回退模式）
	PollingIngestModeAsync = "async" // 轮询步骤只调网关并发布入库消息
)

// 入库相关受控系统配置键（module = polling）。
const (
	SystemConfigPollingIngestMode       = "polling.ingest.mode"
	SystemConfigPollingIngestAlertDepth = "polling.ingest.alert_depth"
	SystemConfigPollingIngestPauseDepth = "polling.ingest.pause_depth"
)

// 入库运行默认值。
const (
	PollingIngestDefaultConcurrency    = 30
	PollingIngestDefaultTimeout        = 30 * time.Second
	PollingCollectionDefaultBatchSize  = 200
	PollingCollectionFlushInterval     = time.Second
	PollingCollectionMaxInFlight       = 500
	PollingIngestDefaultAlertDepth     = 200000
	PollingIngestDefaultPauseDepth     = 500000
	PollingIngestDoneTTL               = 48 * time.Hour
	PollingIngestErrorLogFromAttempt   = 10
	PollingIngestLagAlert              = 10 * time.Minute
	PollingIngestMonitorInterval       = time.Minute
	PollingIngestConnReserve           = 20
	PollingIngestCollectionWriters     = 1
	PollingFlowEvaluatedFallbackTTL    = 30 * time.Minute
	PollingPriorityIndexRebuildEvery   = 30 * time.Second
	PollingPriorityIndexRecentTTL      = 2 * time.Minute
	PollingPriorityIndexReadyTTL       = 2 * time.Minute
	PollingScopeCacheTTL               = 30 * time.Second
	PollingCarrierResetDayCacheTTL     = time.Minute
	PollingTierQueryTimeout            = 2 * time.Second
	PollingIngestSyncCollectionTimeout = 10 * time.Second
)

// PollingIngestRetryDelays 是入库可重试错误的延迟重投序列；超过序列长度后取最后一项，不设次数上限。
var PollingIngestRetryDelays = []time.Duration{
	5 * time.Second, 15 * time.Second, 30 * time.Second, time.Minute, 2 * time.Minute, 5 * time.Minute,
}

// RedisPollingIngestDoneKey 入库已处理标记（String，TTL 48h），按采集 ID 去重。
func RedisPollingIngestDoneKey(observationID string) string {
	return "polling:ingest:done:" + observationID
}

// RedisPollingFlowEvaluatedKey 流量入库产生增量或跨月后的评估标记（String，TTL=套餐检查间隔），套餐步骤据此跳过。
func RedisPollingFlowEvaluatedKey(cardID uint) string {
	return fmt.Sprintf("polling:flow_evaluated:%d", cardID)
}

// RedisPollingIngestPausedKey 入库积压超过反压阈值时置位（String），分发器暂停领取新卡任务。
const RedisPollingIngestPausedKey = "polling:ingest:paused"

// 有活动优先轮询项的卡索引：member = "card_id:task_type"。
const (
	// RedisPollingPriorityActiveKey 活动优先项索引（SET）。
	RedisPollingPriorityActiveKey = "polling:priority:active"
	// RedisPollingPriorityRecentKey 最近入队的优先项（SET，短 TTL），重建索引时并入，避免重建期间漏掉新项。
	RedisPollingPriorityRecentKey = "polling:priority:recent"
	// RedisPollingPriorityReadyKey 索引已由重建任务建立（String，TTL）；不存在时轮询步骤回退查库。
	RedisPollingPriorityReadyKey = "polling:priority:ready"
	// RedisPollingPriorityRebuildKey 重建过程使用的临时 key。
	RedisPollingPriorityRebuildKey = "polling:priority:active:rebuild"
)

// PollingPriorityIndexMember 返回活动优先项索引成员。
func PollingPriorityIndexMember(cardID uint, taskType string) string {
	return fmt.Sprintf("%d:%s", cardID, taskType)
}