"""
Core Constants
==============
ADR-027: Incident-Approval 同步架構

統一定義系統常量，避免散落各處的 magic numbers。

版本: v1.0
建立: 2026-03-26 (台北時區)
"""

# =============================================================================
# TTL Settings (秒)
# =============================================================================

# Working Memory TTL: 7 天
INCIDENT_TTL_SECONDS = 7 * 24 * 3600  # 604800
APPROVAL_TTL_SECONDS = 7 * 24 * 3600  # 604800

# Decision Token TTL: 24 小時
DECISION_TTL_SECONDS = 24 * 3600  # 86400

# =============================================================================
# Redis Key Prefixes
# =============================================================================

REDIS_KEY_INCIDENT = "incident:"
REDIS_KEY_APPROVAL = "approval:"
REDIS_KEY_PENDING = "pending_approvals"
REDIS_KEY_DECISION = "decision:"

# =============================================================================
# Status Mappings (ADR-027)
# =============================================================================

# Approval 狀態 → Incident 狀態
APPROVAL_TO_INCIDENT_STATUS = {
    "pending": "investigating",
    "approved": "resolved",
    "rejected": "rejected",
    "expired": "expired",
}

# Incident 狀態 → 是否活躍
INCIDENT_ACTIVE_STATUSES = frozenset({"investigating", "mitigating"})