"""Report-linked external conversations and idempotent chat turns."""

import sqlalchemy as sa
from alembic import op

revision = "20261028_0023"
down_revision = "20261008_0022"
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.create_table(
        "integration_conversations",
        sa.Column("id", sa.BigInteger(), primary_key=True, autoincrement=True),
        sa.Column("client_id", sa.String(64), nullable=False),
        sa.Column("report_request_id", sa.String(128), nullable=False),
        sa.Column("conversation_id", sa.BigInteger(), nullable=False),
        sa.Column("user_id", sa.BigInteger(), nullable=False),
        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
        sa.ForeignKeyConstraint(
            ["client_id", "report_request_id"],
            ["integration_assessments.client_id", "integration_assessments.request_id"],
            name="fk_integration_conversation_report",
            ondelete="CASCADE",
        ),
        sa.ForeignKeyConstraint(["conversation_id"], ["conversations.id"], ondelete="CASCADE"),
        sa.UniqueConstraint("client_id", "report_request_id", name="uq_integration_conversation_report"),
        sa.UniqueConstraint("conversation_id", name="uq_integration_conversation_thread"),
    )
    op.create_index("ix_integration_conversation_user", "integration_conversations", ["user_id"])

    op.create_table(
        "integration_conversation_requests",
        sa.Column("id", sa.BigInteger(), primary_key=True, autoincrement=True),
        sa.Column("client_id", sa.String(64), nullable=False),
        sa.Column("conversation_id", sa.BigInteger(), nullable=False),
        sa.Column("request_id", sa.String(128), nullable=False),
        sa.Column("user_id", sa.BigInteger(), nullable=False),
        sa.Column("content_hash", sa.String(64), nullable=False),
        sa.Column("status", sa.String(20), nullable=False),
        sa.Column("owner_token", sa.String(32), nullable=False),
        sa.Column("lease_until", sa.DateTime(timezone=True), nullable=False),
        sa.Column("user_message_id", sa.BigInteger()),
        sa.Column("assistant_message_id", sa.BigInteger()),
        sa.Column("error_message", sa.String(200)),
        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
        sa.Column("updated_at", sa.DateTime(timezone=True), nullable=False),
        sa.ForeignKeyConstraint(["conversation_id"], ["conversations.id"], ondelete="CASCADE"),
        sa.UniqueConstraint("client_id", "conversation_id", "request_id", name="uq_integration_conversation_request"),
    )
    op.create_index(
        "ix_integration_conversation_request_owner",
        "integration_conversation_requests",
        ["client_id", "conversation_id"],
    )


def downgrade() -> None:
    op.drop_table("integration_conversation_requests")
    op.drop_table("integration_conversations")