"""Initial PostGIS schema for Sprint 1 foundation."""

from alembic import op
import sqlalchemy as sa
from geoalchemy2 import Geometry

revision = "202601110001"
down_revision = None
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.execute("CREATE EXTENSION IF NOT EXISTS postgis")
    op.execute("CREATE EXTENSION IF NOT EXISTS postgis_topology")
    op.execute('CREATE EXTENSION IF NOT EXISTS "uuid-ossp"')

    op.create_table(
        "projects",
        sa.Column("id", sa.UUID(as_uuid=True), primary_key=True),
        sa.Column("name", sa.Text(), nullable=False),
        sa.Column("description", sa.Text(), nullable=True),
        sa.Column("region", sa.Text(), nullable=False, server_default="Kempen"),
        sa.Column("status", sa.Text(), nullable=False, server_default="active"),
        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.text("NOW()")),
        sa.Column("updated_at", sa.DateTime(timezone=True), server_default=sa.text("NOW()")),
    )

    op.create_table(
        "areas",
        sa.Column("id", sa.UUID(as_uuid=True), primary_key=True),
        sa.Column("project_id", sa.UUID(as_uuid=True), sa.ForeignKey("projects.id", ondelete="CASCADE"), nullable=False),
        sa.Column("name", sa.Text(), nullable=False),
        sa.Column("geometry", Geometry("MULTIPOLYGON", srid=4326), nullable=False),
        sa.Column("original_crs", sa.Text(), nullable=True),
        sa.Column("area_m2", sa.Float(), nullable=True),
        sa.Column("bbox", Geometry("POLYGON", srid=4326), nullable=True),
        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.text("NOW()")),
    )

    op.create_table(
        "datasets",
        sa.Column("id", sa.UUID(as_uuid=True), primary_key=True),
        sa.Column("project_id", sa.UUID(as_uuid=True), sa.ForeignKey("projects.id", ondelete="CASCADE"), nullable=False),
        sa.Column("area_id", sa.UUID(as_uuid=True), sa.ForeignKey("areas.id", ondelete="SET NULL"), nullable=True),
        sa.Column("name", sa.Text(), nullable=False),
        sa.Column("dataset_type", sa.Text(), nullable=False),
        sa.Column("source", sa.Text(), nullable=False),
        sa.Column("storage_path", sa.Text(), nullable=True),
        sa.Column("derived_from_dataset_id", sa.UUID(as_uuid=True), sa.ForeignKey("datasets.id", ondelete="SET NULL"), nullable=True),
        sa.Column("crs", sa.Text(), nullable=True),
        sa.Column("bounds_json", sa.JSON(), nullable=True),
        sa.Column("resolution_json", sa.JSON(), nullable=True),
        sa.Column("bands_json", sa.JSON(), nullable=True),
        sa.Column("metadata_json", sa.JSON(), nullable=True),
        sa.Column("status", sa.Text(), nullable=False, server_default="created"),
        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.text("NOW()")),
        sa.Column("updated_at", sa.DateTime(timezone=True), server_default=sa.text("NOW()")),
    )

    op.create_table(
        "dataset_versions",
        sa.Column("id", sa.UUID(as_uuid=True), primary_key=True),
        sa.Column("dataset_id", sa.UUID(as_uuid=True), sa.ForeignKey("datasets.id", ondelete="CASCADE"), nullable=False),
        sa.Column("version", sa.Integer(), nullable=False, server_default="1"),
        sa.Column("storage_path", sa.Text(), nullable=True),
        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.text("NOW()")),
    )

    op.create_table(
        "analysis_runs",
        sa.Column("id", sa.UUID(as_uuid=True), primary_key=True),
        sa.Column("project_id", sa.UUID(as_uuid=True), sa.ForeignKey("projects.id", ondelete="CASCADE"), nullable=False),
        sa.Column("area_id", sa.UUID(as_uuid=True), sa.ForeignKey("areas.id", ondelete="SET NULL"), nullable=True),
        sa.Column("analysis_type", sa.Text(), nullable=False),
        sa.Column("status", sa.Text(), nullable=False),
        sa.Column("parameters_json", sa.JSON(), nullable=False),
        sa.Column("started_at", sa.DateTime(timezone=True), nullable=True),
        sa.Column("finished_at", sa.DateTime(timezone=True), nullable=True),
        sa.Column("error_message", sa.Text(), nullable=True),
    )

    op.create_table(
        "exports",
        sa.Column("id", sa.UUID(as_uuid=True), primary_key=True),
        sa.Column("project_id", sa.UUID(as_uuid=True), sa.ForeignKey("projects.id", ondelete="CASCADE"), nullable=False),
        sa.Column("analysis_run_id", sa.UUID(as_uuid=True), sa.ForeignKey("analysis_runs.id", ondelete="SET NULL"), nullable=True),
        sa.Column("export_type", sa.Text(), nullable=False),
        sa.Column("storage_path", sa.Text(), nullable=False),
        sa.Column("metadata_json", sa.JSON(), nullable=True),
        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.text("NOW()")),
    )

    op.create_index("ix_areas_geometry", "areas", ["geometry"], postgresql_using="gist")
    op.create_index("ix_areas_project_id", "areas", ["project_id"])
    op.create_index("ix_datasets_project_id", "datasets", ["project_id"])


def downgrade() -> None:
    op.drop_index("ix_datasets_project_id", table_name="datasets")
    op.drop_index("ix_areas_project_id", table_name="areas")
    op.drop_index("ix_areas_geometry", table_name="areas", postgresql_using="gist")
    op.drop_table("exports")
    op.drop_table("analysis_runs")
    op.drop_table("dataset_versions")
    op.drop_table("datasets")
    op.drop_table("areas")
    op.drop_table("projects")