"""
Host metrics model for storing system monitoring data.
"""

from datetime import datetime

from sqlalchemy import BigInteger, DateTime, Float, Integer, JSON
from sqlalchemy.orm import Mapped, mapped_column

from app.core.database import Base


class HostMetrics(Base):
    """Host system metrics - comprehensive monitoring."""

    __tablename__ = "host_metrics"

    id: Mapped[int] = mapped_column(primary_key=True)
    timestamp: Mapped[datetime] = mapped_column(DateTime(timezone=True), index=True)

    # CPU
    cpu_percent: Mapped[float] = mapped_column(Float, nullable=False)
    cpu_count: Mapped[int] = mapped_column(Integer, nullable=False)
    cpu_per_core: Mapped[list | None] = mapped_column(JSON)  # Per-core percentages
    cpu_steal: Mapped[float] = mapped_column(Float, nullable=False, default=0)  # VM steal time
    context_switches_per_sec: Mapped[int] = mapped_column(Integer, nullable=False, default=0)
    interrupts_per_sec: Mapped[int] = mapped_column(Integer, nullable=False, default=0)

    # Memory
    memory_total: Mapped[int] = mapped_column(BigInteger, nullable=False)
    memory_used: Mapped[int] = mapped_column(BigInteger, nullable=False)
    memory_percent: Mapped[float] = mapped_column(Float, nullable=False)
    memory_available: Mapped[int] = mapped_column(BigInteger, nullable=False)
    memory_buffers: Mapped[int] = mapped_column(BigInteger, nullable=False, default=0)
    memory_cached: Mapped[int] = mapped_column(BigInteger, nullable=False, default=0)
    swap_total: Mapped[int] = mapped_column(BigInteger, nullable=False, default=0)
    swap_used: Mapped[int] = mapped_column(BigInteger, nullable=False, default=0)
    swap_percent: Mapped[float] = mapped_column(Float, nullable=False, default=0)

    # Load Average
    load_1: Mapped[float] = mapped_column(Float, nullable=False)
    load_5: Mapped[float] = mapped_column(Float, nullable=False)
    load_15: Mapped[float] = mapped_column(Float, nullable=False)

    # Disk I/O - cumulative + rates
    disk_read_bytes: Mapped[int] = mapped_column(BigInteger, nullable=False)
    disk_write_bytes: Mapped[int] = mapped_column(BigInteger, nullable=False)
    disk_read_iops: Mapped[int] = mapped_column(Integer, nullable=False, default=0)  # Ops/sec
    disk_write_iops: Mapped[int] = mapped_column(Integer, nullable=False, default=0)
    disk_read_mbps: Mapped[float] = mapped_column(Float, nullable=False, default=0)  # MB/s
    disk_write_mbps: Mapped[float] = mapped_column(Float, nullable=False, default=0)
    disk_io_time_ms: Mapped[int] = mapped_column(BigInteger, nullable=False, default=0)  # Latency
    disk_usage_percent: Mapped[float] = mapped_column(Float, nullable=False)

    # Network - cumulative + rates
    net_sent_bytes: Mapped[int] = mapped_column(BigInteger, nullable=False)
    net_recv_bytes: Mapped[int] = mapped_column(BigInteger, nullable=False)
    net_in_mbps: Mapped[float] = mapped_column(Float, nullable=False, default=0)  # MB/s
    net_out_mbps: Mapped[float] = mapped_column(Float, nullable=False, default=0)
    net_packets_in_per_sec: Mapped[int] = mapped_column(Integer, nullable=False, default=0)
    net_packets_out_per_sec: Mapped[int] = mapped_column(Integer, nullable=False, default=0)
    net_errors_in: Mapped[int] = mapped_column(BigInteger, nullable=False, default=0)
    net_errors_out: Mapped[int] = mapped_column(BigInteger, nullable=False, default=0)
    net_drops_in: Mapped[int] = mapped_column(BigInteger, nullable=False, default=0)
    net_drops_out: Mapped[int] = mapped_column(BigInteger, nullable=False, default=0)

    # Processes
    process_count: Mapped[int] = mapped_column(Integer, nullable=False, default=0)
    thread_count: Mapped[int] = mapped_column(Integer, nullable=False, default=0)
    top_cpu_processes: Mapped[list | None] = mapped_column(JSON)  # Top 5 by CPU
    top_mem_processes: Mapped[list | None] = mapped_column(JSON)  # Top 5 by memory