"""initial schema

Revision ID: 563ae5ac1d0d
Revises:
Create Date: 2026-07-18 14:41:47.620604

"""

from typing import Sequence, Union

import pgvector.sqlalchemy
import sqlalchemy as sa
from sqlalchemy.dialects import postgresql

from alembic import op

# revision identifiers, used by Alembic.
revision: str = "563ae5ac1d0d"
down_revision: Union[str, Sequence[str], None] = None
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    """Upgrade schema."""
    op.execute("CREATE EXTENSION IF NOT EXISTS vector")
    # ### commands auto generated by Alembic - please adjust! ###
    op.create_table(
        "departments",
        sa.Column("name", sa.String(length=200), nullable=False),
        sa.Column("id", sa.Uuid(), nullable=False),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("now()"),
            nullable=False,
        ),
        sa.Column(
            "updated_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("now()"),
            nullable=False,
        ),
        sa.PrimaryKeyConstraint("id"),
        sa.UniqueConstraint("name"),
    )
    op.create_table(
        "jobs",
        sa.Column("type", sa.String(length=100), nullable=False),
        sa.Column("payload", postgresql.JSONB(astext_type=sa.Text()), nullable=False),
        sa.Column(
            "status",
            sa.Enum(
                "pending",
                "running",
                "done",
                "failed",
                name="jobstatus",
                native_enum=False,
                length=32,
            ),
            nullable=False,
        ),
        sa.Column(
            "run_after",
            sa.DateTime(timezone=True),
            server_default=sa.text("now()"),
            nullable=False,
        ),
        sa.Column("attempts", sa.Integer(), nullable=False),
        sa.Column("last_error", sa.Text(), nullable=True),
        sa.Column("id", sa.Uuid(), nullable=False),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("now()"),
            nullable=False,
        ),
        sa.Column(
            "updated_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("now()"),
            nullable=False,
        ),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index(
        "ix_jobs_status_run_after", "jobs", ["status", "run_after"], unique=False
    )
    op.create_table(
        "templates",
        sa.Column("name", sa.String(length=200), nullable=False),
        sa.Column("version", sa.String(length=20), nullable=False),
        sa.Column("config", postgresql.JSONB(astext_type=sa.Text()), nullable=False),
        sa.Column("is_builtin", sa.Boolean(), nullable=False),
        sa.Column("id", sa.Uuid(), nullable=False),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("now()"),
            nullable=False,
        ),
        sa.Column(
            "updated_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("now()"),
            nullable=False,
        ),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_table(
        "users",
        sa.Column("email", sa.String(length=320), nullable=False),
        sa.Column("name", sa.String(length=200), nullable=False),
        sa.Column(
            "role",
            sa.Enum("member", "admin", name="userrole", native_enum=False, length=32),
            nullable=False,
        ),
        sa.Column("password_hash", sa.String(length=255), nullable=False),
        sa.Column("department_id", sa.Uuid(), nullable=True),
        sa.Column("id", sa.Uuid(), nullable=False),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("now()"),
            nullable=False,
        ),
        sa.Column(
            "updated_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("now()"),
            nullable=False,
        ),
        sa.ForeignKeyConstraint(
            ["department_id"], ["departments.id"], ondelete="SET NULL"
        ),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index(op.f("ix_users_email"), "users", ["email"], unique=True)
    op.create_table(
        "auth_sessions",
        sa.Column("user_id", sa.Uuid(), nullable=False),
        sa.Column("expires_at", sa.DateTime(timezone=True), nullable=False),
        sa.Column("id", sa.Uuid(), nullable=False),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("now()"),
            nullable=False,
        ),
        sa.Column(
            "updated_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("now()"),
            nullable=False,
        ),
        sa.ForeignKeyConstraint(["user_id"], ["users.id"], ondelete="CASCADE"),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index(
        op.f("ix_auth_sessions_user_id"), "auth_sessions", ["user_id"], unique=False
    )
    op.create_table(
        "documents",
        sa.Column("title", sa.String(length=500), nullable=False),
        sa.Column(
            "status",
            sa.Enum(
                "draft",
                "published",
                "archived",
                name="documentstatus",
                native_enum=False,
                length=32,
            ),
            nullable=False,
        ),
        sa.Column(
            "visibility",
            sa.Enum(
                "public",
                "department",
                "restricted",
                name="documentvisibility",
                native_enum=False,
                length=32,
            ),
            nullable=False,
        ),
        sa.Column("content_md", sa.Text(), nullable=False),
        sa.Column("meta", postgresql.JSONB(astext_type=sa.Text()), nullable=False),
        sa.Column("author_id", sa.Uuid(), nullable=True),
        sa.Column("department_id", sa.Uuid(), nullable=True),
        sa.Column("id", sa.Uuid(), nullable=False),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("now()"),
            nullable=False,
        ),
        sa.Column(
            "updated_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("now()"),
            nullable=False,
        ),
        sa.ForeignKeyConstraint(["author_id"], ["users.id"], ondelete="SET NULL"),
        sa.ForeignKeyConstraint(
            ["department_id"], ["departments.id"], ondelete="SET NULL"
        ),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_table(
        "chunks",
        sa.Column("document_id", sa.Uuid(), nullable=False),
        sa.Column("chunk_index", sa.Integer(), nullable=False),
        sa.Column("content", sa.Text(), nullable=False),
        sa.Column(
            "embedding", pgvector.sqlalchemy.vector.VECTOR(dim=1024), nullable=False
        ),
        sa.Column(
            "tsv",
            postgresql.TSVECTOR(),
            sa.Computed(
                "to_tsvector('german'::regconfig, "
                "content || ' ' || coalesce(meta->>'heading_path', ''))",
                persisted=True,
            ),
            nullable=True,
        ),
        sa.Column("meta", postgresql.JSONB(astext_type=sa.Text()), nullable=False),
        sa.Column("id", sa.Uuid(), nullable=False),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("now()"),
            nullable=False,
        ),
        sa.Column(
            "updated_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("now()"),
            nullable=False,
        ),
        sa.ForeignKeyConstraint(["document_id"], ["documents.id"], ondelete="CASCADE"),
        sa.PrimaryKeyConstraint("id"),
        sa.UniqueConstraint("document_id", "chunk_index"),
    )
    op.create_index(
        op.f("ix_chunks_document_id"), "chunks", ["document_id"], unique=False
    )
    op.create_index(
        "ix_chunks_embedding_hnsw",
        "chunks",
        ["embedding"],
        unique=False,
        postgresql_using="hnsw",
        postgresql_ops={"embedding": "vector_cosine_ops"},
    )
    op.create_index(
        "ix_chunks_tsv", "chunks", ["tsv"], unique=False, postgresql_using="gin"
    )
    op.create_table(
        "conversations",
        sa.Column(
            "mode",
            sa.Enum(
                "query",
                "insight",
                name="conversationmode",
                native_enum=False,
                length=32,
            ),
            nullable=False,
        ),
        sa.Column(
            "status",
            sa.Enum(
                "active",
                "completed",
                "abandoned",
                name="conversationstatus",
                native_enum=False,
                length=32,
            ),
            nullable=False,
        ),
        sa.Column("user_id", sa.Uuid(), nullable=False),
        sa.Column("id", sa.Uuid(), nullable=False),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("now()"),
            nullable=False,
        ),
        sa.Column(
            "updated_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("now()"),
            nullable=False,
        ),
        sa.ForeignKeyConstraint(["user_id"], ["users.id"], ondelete="CASCADE"),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index(
        op.f("ix_conversations_user_id"), "conversations", ["user_id"], unique=False
    )
    op.create_table(
        "doc_permissions",
        sa.Column("document_id", sa.Uuid(), nullable=False),
        sa.Column("department_id", sa.Uuid(), nullable=False),
        sa.Column(
            "level",
            sa.Enum("read", name="permissionlevel", native_enum=False, length=32),
            nullable=False,
        ),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("now()"),
            nullable=False,
        ),
        sa.Column(
            "updated_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("now()"),
            nullable=False,
        ),
        sa.ForeignKeyConstraint(
            ["department_id"], ["departments.id"], ondelete="CASCADE"
        ),
        sa.ForeignKeyConstraint(["document_id"], ["documents.id"], ondelete="CASCADE"),
        sa.PrimaryKeyConstraint("document_id", "department_id"),
    )
    op.create_table(
        "messages",
        sa.Column("conversation_id", sa.Uuid(), nullable=False),
        sa.Column(
            "role",
            sa.Enum(
                "user",
                "assistant",
                "system",
                name="messagerole",
                native_enum=False,
                length=32,
            ),
            nullable=False,
        ),
        sa.Column("content", sa.Text(), nullable=False),
        sa.Column("id", sa.Uuid(), nullable=False),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("now()"),
            nullable=False,
        ),
        sa.Column(
            "updated_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("now()"),
            nullable=False,
        ),
        sa.ForeignKeyConstraint(
            ["conversation_id"], ["conversations.id"], ondelete="CASCADE"
        ),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index(
        op.f("ix_messages_conversation_id"),
        "messages",
        ["conversation_id"],
        unique=False,
    )
    # ### end Alembic commands ###


def downgrade() -> None:
    """Downgrade schema."""
    # ### commands auto generated by Alembic - please adjust! ###
    op.drop_index(op.f("ix_messages_conversation_id"), table_name="messages")
    op.drop_table("messages")
    op.drop_table("doc_permissions")
    op.drop_index(op.f("ix_conversations_user_id"), table_name="conversations")
    op.drop_table("conversations")
    op.drop_index("ix_chunks_tsv", table_name="chunks", postgresql_using="gin")
    op.drop_index(
        "ix_chunks_embedding_hnsw",
        table_name="chunks",
        postgresql_using="hnsw",
        postgresql_ops={"embedding": "vector_cosine_ops"},
    )
    op.drop_index(op.f("ix_chunks_document_id"), table_name="chunks")
    op.drop_table("chunks")
    op.drop_table("documents")
    op.drop_index(op.f("ix_auth_sessions_user_id"), table_name="auth_sessions")
    op.drop_table("auth_sessions")
    op.drop_index(op.f("ix_users_email"), table_name="users")
    op.drop_table("users")
    op.drop_table("templates")
    op.drop_index("ix_jobs_status_run_after", table_name="jobs")
    op.drop_table("jobs")
    op.drop_table("departments")
    # ### end Alembic commands ###