config.py

"""
Configuration constants for the Predictive Routing Engine.
"""

# Scoring weights (original)
W_ETA: float = 0.7
W_CAPACITY: float = 0.3

# Updated scoring weights — Distance / Traffic / ER-Capacity
W_DISTANCE: float = 0.4
W_TRAFFIC: float = 0.3
W_ER_CAPACITY: float = 0.3

# Latency threshold (from spec Requirement 5)
LATENCY_THRESHOLD_MS: int = 200

# Poll intervals (seconds)
TRAFFIC_FEED_POLL_INTERVAL_S: int = 30
ER_CAPACITY_POLL_INTERVAL_S: int = 60
ROUTE_REEVALUATION_INTERVAL_S: int = 30

# TTL / Timeouts
TRAFFIC_SNAPSHOT_MAX_AGE_S: int = 30
ER_CAPACITY_UNKNOWN_THRESHOLD_S: int = 120
ROUTE_REPLACEMENT_THRESHOLD_S: int = 60
HEARTBEAT_INTERVAL_S: int = 5
HEARTBEAT_TIMEOUT_S: int = 15
DRIVER_DISCONNECT_TIMEOUT_S: int = 10
ROUTE_ACK_TIMEOUT_S: int = 5
ROUTE_RETRANSMIT_MAX_ATTEMPTS: int = 3
ROUTE_RETRANSMIT_INTERVAL_S: int = 5

# Cache
IN_MEMORY_CACHE_FALLBACK_S: int = 300  # 5 minutes

# Availability
TARGET_AVAILABILITY_PERCENT: float = 99.9
FAILOVER_RESTORE_S: int = 30
MAX_CONCURRENT_INCIDENTS: int = 500

# Audit
AUDIT_LOG_RETENTION_DAYS: int = 90
AUDIT_PERSIST_TIMEOUT_MS: int = 500
AUDIT_RETRY_MAX: int = 3

# Database
DATABASE_URL: str = "sqlite+aiosqlite:///./swiftpath.db"

# Time-of-day congestion multipliers for calculate_predictive_eta
TIME_OF_DAY_CONGESTION: dict = {
    "night": 0.8,          # 00:00-06:00
    "morning_rush": 1.8,   # 06:00-09:00
    "midday": 1.0,         # 09:00-16:00
    "evening_rush": 1.7,   # 16:00-19:00
    "evening": 0.9,        # 19:00-00:00
}