"""Report Template and Report Instance models for the Report Generator plugin."""

from __future__ import annotations

import uuid

from sqlalchemy import ForeignKey, Index, String, Text
from sqlalchemy.dialects.postgresql import UUID as PGUUID
from sqlalchemy.orm import Mapped, mapped_column

from app.core.db import Base, TenantMixin


class ReportTemplate(Base, TenantMixin):
    """Report template entity — Jinja2 or SQL template, tenant-scoped, soft-deletable."""

    __tablename__ = "report_templates"
    __table_args__ = (
        Index("ix_report_templates_tenant", "tenant_id"),
        Index("ix_report_templates_name", "name"),
    )

    id: Mapped[uuid.UUID] = mapped_column(
        PGUUID(as_uuid=True), primary_key=True, default=uuid.uuid4
    )
    name: Mapped[str] = mapped_column(String(255), nullable=False)
    description: Mapped[str] = mapped_column(Text, nullable=False, default="")
    template_type: Mapped[str] = mapped_column(
        String(50), nullable=False, default="jinja2"
    )
    content: Mapped[str] = mapped_column(Text, nullable=False)
    output_format: Mapped[str] = mapped_column(
        String(50), nullable=False, default="csv"
    )
    created_by: Mapped[uuid.UUID] = mapped_column(PGUUID(as_uuid=True), nullable=False)


class ReportInstance(Base, TenantMixin):
    """Report instance entity — a generated report, tenant-scoped."""

    __tablename__ = "report_instances"
    __table_args__ = (
        Index("ix_report_instances_tenant", "tenant_id"),
        Index("ix_report_instances_template", "template_id"),
        Index("ix_report_instances_status", "status"),
    )

    id: Mapped[uuid.UUID] = mapped_column(
        PGUUID(as_uuid=True), primary_key=True, default=uuid.uuid4
    )
    template_id: Mapped[uuid.UUID] = mapped_column(
        PGUUID(as_uuid=True),
        ForeignKey("report_templates.id", ondelete="CASCADE"),
        nullable=False,
    )
    status: Mapped[str] = mapped_column(
        String(50), nullable=False, default="pending"
    )
    output_path: Mapped[str | None] = mapped_column(
        String(1024), nullable=True
    )
    error_message: Mapped[str | None] = mapped_column(Text, nullable=True)
    created_by: Mapped[uuid.UUID] = mapped_column(PGUUID(as_uuid=True), nullable=False)
