from datetime import datetime
from enum import Enum
from typing import Any, Dict, List
from pydantic import BaseModel

import uuid6
from pytz import timezone
from sqlalchemy import UUID, Boolean, Column, DateTime, ForeignKey, Integer, String, Text
from sqlalchemy.orm import relationship

from app.core.config import settings

from . import Base


class MapsetStatus(str, Enum):
    approved = "approved"
    rejected = "rejected"
    on_verification = "on_verification"
    on_process = "on_process"


class MapsetModel(Base):
    __tablename__ = "mapsets"

    id = Column(UUID(as_uuid=True), primary_key=True, index=True, default=uuid6.uuid7)
    name = Column(String(255), nullable=False)
    description = Column(Text, nullable=True)
    scale = Column(String(29), nullable=False)
    layer_url = Column(Text)
    layer_type = Column(String(20), nullable=True)
    metadata_url = Column(Text)
    category_id = Column(UUID(as_uuid=True), ForeignKey("categories.id"))
    classification_id = Column(UUID(as_uuid=True), ForeignKey("classifications.id"))
    regional_id = Column(UUID(as_uuid=True), ForeignKey("regionals.id"), nullable=True)
    projection_system_id = Column(UUID(as_uuid=True), ForeignKey("map_projection_systems.id"))
    producer_id = Column(UUID(as_uuid=True), ForeignKey("organizations.id"))
    status_validation = Column(String(20), nullable=True)
    data_status = Column(String(20), nullable=False)
    data_update_period = Column(String(20), nullable=False)
    data_version = Column(String(20), nullable=False)
    coverage_level = Column(String(20), nullable=True)
    coverage_area = Column(String(20), nullable=True)
    view_count = Column(Integer, default=0)
    download_count = Column(Integer, default=0)
    order = Column(Integer, default=0)
    is_popular = Column(Boolean, default=False)
    is_active = Column(Boolean, default=True)
    is_deleted = Column(Boolean, default=False)
    created_at = Column(DateTime(timezone=True), default=datetime.now(timezone(settings.TIMEZONE)))
    updated_at = Column(
        DateTime(timezone=True),
        default=datetime.now(timezone(settings.TIMEZONE)),
        onupdate=datetime.now(timezone(settings.TIMEZONE)),
    )
    created_by = Column(UUID(as_uuid=True), ForeignKey("users.id"))
    updated_by = Column(UUID(as_uuid=True), ForeignKey("users.id"))

    projection_system = relationship("MapProjectionSystemModel", uselist=False, lazy="selectin")
    classification = relationship("ClassificationModel", uselist=False, lazy="selectin")
    category = relationship("CategoryModel", uselist=False, lazy="selectin")
    regional = relationship("RegionalModel", uselist=False, lazy="selectin")
    source_usages = relationship("SourceUsageModel", back_populates="mapset", lazy="selectin")
    sources = relationship(
        "MapSourceModel",
        secondary="source_usages",
        primaryjoin="MapsetModel.id == SourceUsageModel.mapset_id",
        secondaryjoin="SourceUsageModel.source_id == MapSourceModel.id",
        lazy="selectin",
        viewonly=True,
    )
    producer = relationship("OrganizationModel", back_populates="mapsets", uselist=False, lazy="joined")

class MapsetFile(BaseModel):
    title: str
    path: str
    columns: List[str]
    author: Dict[str, Any]
    style: str