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feat: add session_ratings table and analytics indexes

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Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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chihlasm
2026-02-16 00:17:11 -05:00
parent 8e0ad74986
commit 3683d05616
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backend/alembic/versions/039_add_session_ratings_and_analytics_indexes.py Normal file
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"""Add session_ratings table and analytics indexes
Revision ID: 039
Revises: 038
Create Date: 2026-02-16
"""
from alembic import op
import sqlalchemy as sa
from sqlalchemy.dialects.postgresql import UUID
revision = '039'
down_revision = '038'
def upgrade():
# New session_ratings table for flow CSAT ratings
op.create_table(
'session_ratings',
sa.Column('id', UUID(as_uuid=True), server_default=sa.text('gen_random_uuid()'), primary_key=True),
sa.Column('session_id', UUID(as_uuid=True), sa.ForeignKey('sessions.id', ondelete='CASCADE'), nullable=False),
sa.Column('user_id', UUID(as_uuid=True), sa.ForeignKey('users.id', ondelete='CASCADE'), nullable=False),
sa.Column('tree_id', UUID(as_uuid=True), sa.ForeignKey('trees.id', ondelete='CASCADE'), nullable=False),
sa.Column('account_id', UUID(as_uuid=True), sa.ForeignKey('accounts.id', ondelete='CASCADE'), nullable=False),
sa.Column('rating', sa.Integer, nullable=False),
sa.Column('comment', sa.String(500), nullable=True),
sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('NOW()'), nullable=False),
sa.CheckConstraint('rating >= 1 AND rating <= 5', name='ck_session_ratings_rating_range'),
sa.UniqueConstraint('session_id', name='uq_session_ratings_session_id'),
)
# Analytics indexes
op.create_index('ix_session_ratings_tree_created', 'session_ratings', ['tree_id', 'created_at'])
op.create_index('ix_session_ratings_account_created', 'session_ratings', ['account_id', 'created_at'])
op.create_index('ix_sessions_completed', 'sessions', ['completed_at'])
op.create_index('ix_step_ratings_step_helpful', 'step_ratings', ['step_id', 'was_helpful'])
# Make step_ratings.rating column nullable (thumbs-only mode)
op.alter_column('step_ratings', 'rating', nullable=True)
def downgrade():
op.alter_column('step_ratings', 'rating', nullable=False)
op.drop_index('ix_step_ratings_step_helpful', 'step_ratings')
op.drop_index('ix_sessions_completed', 'sessions')
op.drop_index('ix_session_ratings_account_created', 'session_ratings')
op.drop_index('ix_session_ratings_tree_created', 'session_ratings')
op.drop_table('session_ratings')