"""flow engine tables

Revision ID: 62ea9a5d8f9d
Revises: 
Create Date: 2026-09-06 22:27:07.129788

"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa
import sqlmodel


# revision identifiers, used by Alembic.
revision: str = '62ea9a5d8f9d'
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."""
    # ### commands auto generated by Alembic - please adjust! ###
    op.create_table('flow_definitions',
    sa.Column('id', sa.Uuid(), nullable=False),
    sa.Column('name', sqlmodel.sql.sqltypes.AutoString(length=200), nullable=False),
    sa.Column('description', sqlmodel.sql.sqltypes.AutoString(length=2000), nullable=False),
    sa.Column('status', sqlmodel.sql.sqltypes.AutoString(length=20), nullable=False),
    sa.Column('continuation_flow_id', sa.Uuid(), nullable=True),
    sa.Column('created_at', sa.DateTime(timezone=True), nullable=True),
    sa.ForeignKeyConstraint(['continuation_flow_id'], ['flow_definitions.id'], ),
    sa.PrimaryKeyConstraint('id')
    )
    op.create_index(op.f('ix_flow_definitions_name'), 'flow_definitions', ['name'], unique=True)
    op.create_table('flow_versions',
    sa.Column('id', sa.Uuid(), nullable=False),
    sa.Column('flow_id', sa.Uuid(), nullable=False),
    sa.Column('version_no', sa.Integer(), nullable=False),
    sa.Column('langflow_json', sa.JSON(), nullable=True),
    sa.Column('lfx_flow_id', sqlmodel.sql.sqltypes.AutoString(length=200), nullable=True),
    sa.Column('deployed_at', sa.DateTime(timezone=True), nullable=True),
    sa.Column('author', sqlmodel.sql.sqltypes.AutoString(length=200), nullable=False),
    sa.Column('created_at', sa.DateTime(timezone=True), nullable=True),
    sa.ForeignKeyConstraint(['flow_id'], ['flow_definitions.id'], ),
    sa.PrimaryKeyConstraint('id'),
    sa.UniqueConstraint('flow_id', 'version_no')
    )
    op.create_index(op.f('ix_flow_versions_flow_id'), 'flow_versions', ['flow_id'], unique=False)
    op.create_index(op.f('ix_flow_versions_version_no'), 'flow_versions', ['version_no'], unique=False)
    op.create_table('flow_runs',
    sa.Column('id', sa.Uuid(), nullable=False),
    sa.Column('version_id', sa.Uuid(), nullable=False),
    sa.Column('tenant_id', sqlmodel.sql.sqltypes.AutoString(length=200), nullable=False),
    sa.Column('status', sqlmodel.sql.sqltypes.AutoString(length=30), nullable=False),
    sa.Column('input', sa.JSON(), nullable=True),
    sa.Column('output', sa.JSON(), nullable=True),
    sa.Column('session_id', sqlmodel.sql.sqltypes.AutoString(length=200), nullable=True),
    sa.Column('created_at', sa.DateTime(timezone=True), nullable=True),
    sa.Column('finished_at', sa.DateTime(timezone=True), nullable=True),
    sa.ForeignKeyConstraint(['version_id'], ['flow_versions.id'], ),
    sa.PrimaryKeyConstraint('id')
    )
    op.create_index(op.f('ix_flow_runs_status'), 'flow_runs', ['status'], unique=False)
    op.create_index(op.f('ix_flow_runs_tenant_id'), 'flow_runs', ['tenant_id'], unique=False)
    op.create_index(op.f('ix_flow_runs_version_id'), 'flow_runs', ['version_id'], unique=False)
    op.create_table('approval_tasks',
    sa.Column('id', sa.Uuid(), nullable=False),
    sa.Column('run_id', sa.Uuid(), nullable=False),
    sa.Column('version_id', sa.Uuid(), nullable=False),
    sa.Column('tenant_id', sqlmodel.sql.sqltypes.AutoString(length=200), nullable=False),
    sa.Column('title', sqlmodel.sql.sqltypes.AutoString(length=500), nullable=False),
    sa.Column('payload', sa.JSON(), nullable=True),
    sa.Column('continuation_flow_id', sa.Uuid(), nullable=True),
    sa.Column('approver', sqlmodel.sql.sqltypes.AutoString(length=200), nullable=True),
    sa.Column('status', sqlmodel.sql.sqltypes.AutoString(length=20), nullable=False),
    sa.Column('decision_note', sqlmodel.sql.sqltypes.AutoString(length=2000), nullable=False),
    sa.Column('created_at', sa.DateTime(timezone=True), nullable=True),
    sa.Column('decided_at', sa.DateTime(timezone=True), nullable=True),
    sa.ForeignKeyConstraint(['run_id'], ['flow_runs.id'], ),
    sa.ForeignKeyConstraint(['version_id'], ['flow_versions.id'], ),
    sa.PrimaryKeyConstraint('id')
    )
    op.create_index(op.f('ix_approval_tasks_run_id'), 'approval_tasks', ['run_id'], unique=False)
    op.create_index(op.f('ix_approval_tasks_status'), 'approval_tasks', ['status'], unique=False)
    op.create_index(op.f('ix_approval_tasks_tenant_id'), 'approval_tasks', ['tenant_id'], unique=False)
    op.create_index(op.f('ix_approval_tasks_version_id'), 'approval_tasks', ['version_id'], unique=False)
    # ### end Alembic commands ###


def downgrade() -> None:
    """Downgrade schema."""
    # ### commands auto generated by Alembic - please adjust! ###
    op.drop_index(op.f('ix_approval_tasks_version_id'), table_name='approval_tasks')
    op.drop_index(op.f('ix_approval_tasks_tenant_id'), table_name='approval_tasks')
    op.drop_index(op.f('ix_approval_tasks_status'), table_name='approval_tasks')
    op.drop_index(op.f('ix_approval_tasks_run_id'), table_name='approval_tasks')
    op.drop_table('approval_tasks')
    op.drop_index(op.f('ix_flow_runs_version_id'), table_name='flow_runs')
    op.drop_index(op.f('ix_flow_runs_tenant_id'), table_name='flow_runs')
    op.drop_index(op.f('ix_flow_runs_status'), table_name='flow_runs')
    op.drop_table('flow_runs')
    op.drop_index(op.f('ix_flow_versions_version_no'), table_name='flow_versions')
    op.drop_index(op.f('ix_flow_versions_flow_id'), table_name='flow_versions')
    op.drop_table('flow_versions')
    op.drop_index(op.f('ix_flow_definitions_name'), table_name='flow_definitions')
    op.drop_table('flow_definitions')
    # ### end Alembic commands ###