from datetime import date, datetime
from enum import Enum
from typing import Any, Optional

from pydantic import BaseModel, EmailStr, Field, validator


class DroneRequestStatus(str, Enum):
    NEW = "NEW"
    APPROVED = "APPROVED"
    DENIED = "DENIED"
    CANCELED = "CANCELED"
    INFLIGHT = "INFLIGHT"
    COMPLETED = "COMPLETED"


class DroneRequestBase(BaseModel):
    operator_name: str = Field(..., max_length=128)
    operator_id: Optional[str] = Field(None, max_length=64)
    flight_date: Optional[date] = None
    estimated_takeoff_time: Optional[str] = Field(None, max_length=8)
    estimated_completion_time: Optional[str] = Field(None, max_length=8)
    maximum_elevation_ft_amsl: int = Field(..., ge=0)
    location_description: Optional[str] = None
    location_latitude: float = Field(..., ge=-90, le=90)
    location_longitude: float = Field(..., ge=-180, le=180)
    location_inside_frz: Optional[bool] = None
    flyer_name: Optional[str] = Field(None, max_length=128)
    flyer_id: Optional[str] = Field(None, max_length=64)
    email: EmailStr
    phone: Optional[str] = Field(None, max_length=32)
    notes: Optional[str] = None
    estimated_takeoff_at: datetime
    estimated_completion_at: datetime
    prototype_overlay: Optional[dict[str, Any]] = None

    @validator("operator_name")
    def validate_operator_name(cls, value):
        value = value.strip()
        if not value:
            raise ValueError("Operator name is required")
        return value

    @validator("location_inside_frz", pre=True)
    def parse_inside_frz(cls, value):
        if isinstance(value, str):
            normalized = value.strip().lower()
            if normalized in {"yes", "true", "1", "y"}:
                return True
            if normalized in {"no", "false", "0", "n"}:
                return False
        return value


class DroneRequestCreate(DroneRequestBase):
    pass


class DroneRequestUpdate(BaseModel):
    operator_name: Optional[str] = Field(None, max_length=128)
    operator_id: Optional[str] = Field(None, max_length=64)
    flyer_name: Optional[str] = Field(None, max_length=128)
    flyer_id: Optional[str] = Field(None, max_length=64)
    email: Optional[EmailStr] = None
    phone: Optional[str] = Field(None, max_length=32)
    flight_date: Optional[date] = None
    estimated_takeoff_time: Optional[str] = Field(None, max_length=8)
    estimated_completion_time: Optional[str] = Field(None, max_length=8)
    estimated_takeoff_at: Optional[datetime] = None
    estimated_completion_at: Optional[datetime] = None
    maximum_elevation_ft_amsl: Optional[int] = Field(None, ge=0)
    location_description: Optional[str] = None
    location_latitude: Optional[float] = Field(None, ge=-90, le=90)
    location_longitude: Optional[float] = Field(None, ge=-180, le=180)
    location_inside_frz: Optional[bool] = None
    notes: Optional[str] = None
    prototype_overlay: Optional[dict[str, Any]] = None
    operator_comments: Optional[str] = None


class DroneRequestStatusUpdate(BaseModel):
    status: DroneRequestStatus
    comment: Optional[str] = None


class DroneRequestComment(BaseModel):
    comment: str = Field(..., min_length=1)
    email_applicant: bool = True


class DroneRequest(DroneRequestBase):
    id: int
    reference_number: str
    status: DroneRequestStatus
    operator_comments: Optional[str] = None
    submitted_via: str
    submitted_ip: Optional[str] = None
    created_by: Optional[str] = None
    submitted_at: datetime
    updated_at: datetime
    status_changed_at: Optional[datetime] = None
    status_changed_by: Optional[str] = None

    class Config:
        from_attributes = True


class DroneRequestPublicSubmission(DroneRequest):
    request_id: str
    secure_link: str