from pydantic import BaseModel, Field
from typing import Optional, List, Any, Dict
from enum import Enum


class LogLevel(str, Enum):
    INFO = "INFO"
    WARN = "WARN"
    ERROR = "ERROR"


class CommandStatus(str, Enum):
    PENDING = "pending"
    SUCCESS = "success"
    ERROR = "error"
    TIMEOUT = "timeout"


class MqttCommandRequest(BaseModel):
    cmd: str = Field(..., description="Command name: ping, playback, file_manager, relay_setup, clock_setup, system_info, system")
    contents: Dict[str, Any] = Field(default_factory=dict, description="Command payload contents")


class DeviceLogEntry(BaseModel):
    id: int
    device_serial: str
    level: str
    message: str
    device_timestamp: Optional[int] = None
    source: str = "log"
    received_at: str


class HeartbeatEntry(BaseModel):
    id: int
    device_serial: str
    device_id: Optional[str] = None
    firmware_version: Optional[str] = None
    ip_address: Optional[str] = None
    gateway: Optional[str] = None
    uptime_ms: Optional[int] = None
    uptime_display: Optional[str] = None
    rssi: Optional[int] = None
    free_heap: Optional[int] = None
    state: Optional[str] = None  # "idle" | "playing" | "paused" | "error" | "booting" (v2 firmware only)
    ok: Optional[bool] = None    # overall device health, independent of playback state (v2 firmware only)
    received_at: str


class CommandEntry(BaseModel):
    id: int
    device_serial: str
    command_name: str
    command_payload: Optional[str] = None
    status: str
    response_payload: Optional[str] = None
    sent_at: str
    responded_at: Optional[str] = None


class AlertEventEntry(BaseModel):
    id: int
    device_serial: str
    subsystem: str
    state: str
    message: Optional[str] = None
    occurred_at: str


class DeviceMqttStatus(BaseModel):
    device_serial: str
    online: bool
    last_heartbeat: Optional[HeartbeatEntry] = None
    seconds_since_heartbeat: Optional[int] = None
    last_alert_event: Optional[AlertEventEntry] = None


class MqttStatusResponse(BaseModel):
    devices: List[DeviceMqttStatus]
    broker_connected: bool = False


class LogListResponse(BaseModel):
    logs: List[DeviceLogEntry]
    total: int


class HeartbeatListResponse(BaseModel):
    heartbeats: List[HeartbeatEntry]
    total: int


class CommandListResponse(BaseModel):
    commands: List[CommandEntry]
    total: int


class CommandSendResponse(BaseModel):
    success: bool
    command_id: int
    message: str


class DeviceAlertEntry(BaseModel):
    device_serial: str
    subsystem: str
    state: str
    message: Optional[str] = None
    updated_at: str


class DeviceAlertsResponse(BaseModel):
    alerts: List[DeviceAlertEntry]


class AlertEventListResponse(BaseModel):
    events: List[AlertEventEntry]
    total: int


class BootEventEntry(BaseModel):
    id: int
    device_serial: str
    boot_count: Optional[int] = None
    reset_reason: Optional[str] = None
    is_fault: bool = False
    free_heap: Optional[int] = None
    crash_task: Optional[str] = None
    crash_pc: Optional[int] = None
    crash_exc_cause: Optional[int] = None
    crash_exc_vaddr: Optional[int] = None
    occurred_at: str


class BootEventListResponse(BaseModel):
    events: List[BootEventEntry]
    total: int


class PingSampleEntry(BaseModel):
    id: int
    device_serial: str
    rtt_ms: int
    sampled_at: str


class PingSampleListResponse(BaseModel):
    samples: List[PingSampleEntry]
    total: int


class DiagnosticsReportEntry(BaseModel):
    id: int
    device_serial: str
    cpu_temp_avg: Optional[float] = None
    cpu_temp_min: Optional[float] = None
    cpu_temp_max: Optional[float] = None
    cpu_temp_samples: Optional[int] = None
    wifi_reconnect_count: Optional[int] = None
    wifi_last_disconnect_reason: Optional[str] = None
    wifi_last_disconnect_uptime_ms: Optional[int] = None
    ota_current_version: Optional[str] = None
    ota_update_available: Optional[bool] = None
    ota_available_version: Optional[str] = None
    ota_last_check_uptime_ms: Optional[int] = None
    ota_last_error: Optional[str] = None
    stack_high_water: Optional[str] = None  # JSON-encoded string — see insert_diagnostics_report
    bell_strikes: Optional[str] = None      # JSON-encoded string, {"0": count, ...} — v2 firmware only
    bell_loads: Optional[str] = None        # JSON-encoded string, {"0": load, ...} — v2 firmware only
    cooling_active: Optional[bool] = None   # v2 firmware only
    received_at: str


class DiagnosticsReportListResponse(BaseModel):
    reports: List[DiagnosticsReportEntry]
    total: int


class DeviceReportEntry(BaseModel):
    """A control/reports event (currently only bell_overload) — see
    project-vesper's vesper_mqtt_topic_spec_v2.md. Console-side storage is
    intentionally light: history/audit only, not a real-time UI surface."""
    id: int
    device_serial: str
    report_type: str
    payload: Optional[str] = None  # JSON-encoded string
    occurred_at: str


class DeviceReportListResponse(BaseModel):
    reports: List[DeviceReportEntry]
    total: int


class LatestDiagnosticsEntry(BaseModel):
    device_serial: str
    cpu_temp_avg: Optional[float] = None
    received_at: str


class LatestPingEntry(BaseModel):
    device_serial: str
    rtt_ms: int
    sampled_at: str


class LatestMetricsResponse(BaseModel):
    diagnostics: List[LatestDiagnosticsEntry]
    pings: List[LatestPingEntry]