"""Update InterviewSession model to use proper enum

Revision ID: 4d04e6e32445
Revises: 96ffcf34e1de
Create Date: 2025-09-02 20:10:52.321402

"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa
from sqlalchemy.dialects import postgresql

# revision identifiers, used by Alembic.
revision: str = '4d04e6e32445'
down_revision: Union[str, Sequence[str], None] = '96ffcf34e1de'
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    """Upgrade schema."""
    # Recreate interview_sessions table with proper enum (enum already exists)
    op.drop_index(op.f('ix_interview_sessions_id'), table_name='interview_sessions')
    op.drop_table('interview_sessions')
    
    # Create table with existing enum type
    op.create_table('interview_sessions',
        sa.Column('id', sa.Integer(), nullable=False),
        sa.Column('resume_id', sa.Integer(), nullable=False),
        sa.Column('room_name', sa.String(length=255), nullable=False),
        sa.Column('status', postgresql.ENUM('created', 'active', 'completed', 'failed', name='interviewstatus', create_type=False), nullable=False),
        sa.Column('transcript', sa.Text(), nullable=True),
        sa.Column('ai_feedback', sa.Text(), nullable=True),
        sa.Column('started_at', sa.DateTime(), nullable=False),
        sa.Column('completed_at', sa.DateTime(), nullable=True),
        sa.ForeignKeyConstraint(['resume_id'], ['resume.id'], ),
        sa.PrimaryKeyConstraint('id'),
        sa.UniqueConstraint('room_name')
    )
    op.create_index(op.f('ix_interview_sessions_id'), 'interview_sessions', ['id'], unique=False)


def downgrade() -> None:
    """Downgrade schema."""
    op.drop_index(op.f('ix_interview_sessions_id'), table_name='interview_sessions')
    op.drop_table('interview_sessions')
    
    # Recreate old table structure  
    op.create_table('interview_sessions',
        sa.Column('id', sa.Integer(), nullable=False),
        sa.Column('resume_id', sa.Integer(), nullable=False),
        sa.Column('room_name', sa.String(length=255), nullable=False),
        sa.Column('status', sa.String(length=50), nullable=False),
        sa.Column('transcript', sa.Text(), nullable=True),
        sa.Column('ai_feedback', sa.Text(), nullable=True),
        sa.Column('started_at', sa.DateTime(), nullable=False),
        sa.Column('completed_at', sa.DateTime(), nullable=True),
        sa.ForeignKeyConstraint(['resume_id'], ['resume.id'], ),
        sa.PrimaryKeyConstraint('id'),
        sa.UniqueConstraint('room_name')
    )
    op.create_index(op.f('ix_interview_sessions_id'), 'interview_sessions', ['id'], unique=False)