from __future__ import annotations

import uuid
from datetime import datetime
from typing import Any

from sqlalchemy import (
    DateTime,
    ForeignKey,
    Index,
    Integer,
    JSON,
    LargeBinary,
    String,
    Text,
    UniqueConstraint,
)
from sqlalchemy.orm import Mapped, mapped_column

from govoplan_core.db.base import Base, TimestampMixin


def new_uuid() -> str:
    return str(uuid.uuid4())


class ConnectorTabularSource(Base, TimestampMixin):
    __tablename__ = "connector_tabular_sources"
    __table_args__ = (
        UniqueConstraint("tenant_id", "source_name", name="uq_connector_tabular_source_name"),
        Index("ix_connector_tabular_sources_tenant_status", "tenant_id", "status"),
        Index("ix_connector_tabular_sources_tenant_updated", "tenant_id", "updated_at"),
    )

    id: Mapped[str] = mapped_column(String(36), primary_key=True, default=new_uuid)
    tenant_id: Mapped[str] = mapped_column(String(36), nullable=False, index=True)
    provider: Mapped[str] = mapped_column(String(50), default="snapshot", nullable=False, index=True)
    source_name: Mapped[str] = mapped_column(String(120), nullable=False)
    name: Mapped[str] = mapped_column(String(300), nullable=False)
    description: Mapped[str | None] = mapped_column(Text)
    status: Mapped[str] = mapped_column(String(30), default="active", nullable=False, index=True)
    schema_version: Mapped[int] = mapped_column(Integer, default=1, nullable=False)
    schema_: Mapped[list[dict[str, Any]]] = mapped_column("schema", JSON, default=list, nullable=False)
    rows: Mapped[list[dict[str, Any]]] = mapped_column(JSON, default=list, nullable=False)
    fingerprint: Mapped[str] = mapped_column(String(64), nullable=False, index=True)
    row_count: Mapped[int] = mapped_column(Integer, nullable=False)
    byte_count: Mapped[int] = mapped_column(Integer, nullable=False)
    metadata_: Mapped[dict[str, Any]] = mapped_column("metadata", JSON, default=dict, nullable=False)
    created_by: Mapped[str | None] = mapped_column(String(255), nullable=True, index=True)
    updated_by: Mapped[str | None] = mapped_column(String(255), nullable=True, index=True)
    deleted_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True, index=True)


class ConnectorSanctionsAcquisitionRun(Base, TimestampMixin):
    __tablename__ = "connector_sanctions_acquisition_runs"
    __table_args__ = (
        Index(
            "ix_connector_sanctions_run_health",
            "tenant_id",
            "provider_id",
            "status",
            "started_at",
        ),
    )

    id: Mapped[str] = mapped_column(
        String(36),
        primary_key=True,
        default=new_uuid,
    )
    tenant_id: Mapped[str] = mapped_column(
        String(36),
        nullable=False,
        index=True,
    )
    provider_id: Mapped[str] = mapped_column(
        String(100),
        nullable=False,
        index=True,
    )
    source_id: Mapped[str] = mapped_column(
        String(200),
        nullable=False,
        index=True,
    )
    status: Mapped[str] = mapped_column(
        String(40),
        default="running",
        nullable=False,
        index=True,
    )
    attempt_count: Mapped[int] = mapped_column(
        Integer,
        default=0,
        nullable=False,
    )
    request_evidence: Mapped[dict[str, Any]] = mapped_column(
        JSON,
        default=dict,
        nullable=False,
    )
    response_evidence: Mapped[dict[str, Any]] = mapped_column(
        JSON,
        default=dict,
        nullable=False,
    )
    started_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True),
        nullable=False,
        index=True,
    )
    finished_at: Mapped[datetime | None] = mapped_column(
        DateTime(timezone=True),
        nullable=True,
    )
    snapshot_id: Mapped[str | None] = mapped_column(
        String(36),
        nullable=True,
        index=True,
    )
    error: Mapped[str | None] = mapped_column(
        Text,
        nullable=True,
    )
    created_by: Mapped[str | None] = mapped_column(
        String(255),
        nullable=True,
        index=True,
    )


class ConnectorSanctionsSnapshot(Base, TimestampMixin):
    __tablename__ = "connector_sanctions_snapshots"
    __table_args__ = (
        UniqueConstraint(
            "connector_run_id",
            name="uq_connector_sanctions_snapshot_run",
        ),
        Index(
            "ix_connector_sanctions_snapshot_source",
            "tenant_id",
            "provider_id",
            "acquired_at",
        ),
        Index(
            "ix_connector_sanctions_snapshot_version",
            "provider_id",
            "source_id",
            "source_version",
        ),
    )

    id: Mapped[str] = mapped_column(
        String(36),
        primary_key=True,
        default=new_uuid,
    )
    tenant_id: Mapped[str] = mapped_column(
        String(36),
        nullable=False,
        index=True,
    )
    provider_id: Mapped[str] = mapped_column(
        String(100),
        nullable=False,
        index=True,
    )
    publisher: Mapped[str] = mapped_column(
        String(300),
        nullable=False,
    )
    jurisdiction: Mapped[str] = mapped_column(
        String(100),
        nullable=False,
        index=True,
    )
    list_type: Mapped[str] = mapped_column(
        String(100),
        nullable=False,
        index=True,
    )
    source_id: Mapped[str] = mapped_column(
        String(200),
        nullable=False,
        index=True,
    )
    source_version: Mapped[str] = mapped_column(
        String(255),
        nullable=False,
        index=True,
    )
    publication_at: Mapped[datetime | None] = mapped_column(
        DateTime(timezone=True),
        nullable=True,
    )
    effective_at: Mapped[datetime | None] = mapped_column(
        DateTime(timezone=True),
        nullable=True,
    )
    acquired_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True),
        nullable=False,
        index=True,
    )
    source_url: Mapped[str | None] = mapped_column(
        String(1500),
        nullable=True,
    )
    content_type: Mapped[str] = mapped_column(
        String(200),
        nullable=False,
    )
    byte_count: Mapped[int] = mapped_column(
        Integer,
        nullable=False,
    )
    sha256: Mapped[str] = mapped_column(
        String(64),
        nullable=False,
        index=True,
    )
    signature_evidence: Mapped[dict[str, Any]] = mapped_column(
        JSON,
        default=dict,
        nullable=False,
    )
    parser_version: Mapped[str] = mapped_column(
        String(100),
        nullable=False,
    )
    licence_notes: Mapped[str | None] = mapped_column(
        Text,
        nullable=True,
    )
    trust_notes: Mapped[str | None] = mapped_column(
        Text,
        nullable=True,
    )
    connector_run_id: Mapped[str] = mapped_column(
        ForeignKey(
            "connector_sanctions_acquisition_runs.id",
            ondelete="RESTRICT",
        ),
        nullable=False,
        index=True,
    )
    transport_evidence: Mapped[dict[str, Any]] = mapped_column(
        JSON,
        default=dict,
        nullable=False,
    )
    raw_content: Mapped[bytes] = mapped_column(
        LargeBinary,
        nullable=False,
    )


__all__ = [
    "ConnectorSanctionsAcquisitionRun",
    "ConnectorSanctionsSnapshot",
    "ConnectorTabularSource",
    "new_uuid",
]