"""Add Lesson Reflections Table (Phase 5: Analytics)

Erstellt die lesson_reflections Tabelle fuer
Post-Lesson Reflexionen.

Revision ID: 005
Revises: 004
Create Date: 2026-01-15 18:00:00

"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa

# revision identifiers, used by Alembic.
revision: str = '005'
down_revision: Union[str, None] = '004'
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.create_table(
        'lesson_reflections',
        sa.Column('id', sa.String(36), primary_key=True),
        sa.Column('session_id', sa.String(36), sa.ForeignKey('lesson_sessions.id'), nullable=False, unique=True, index=True),
        sa.Column('teacher_id', sa.String(100), nullable=False, index=True),
        sa.Column('notes', sa.Text(), default=''),
        sa.Column('overall_rating', sa.Integer(), nullable=True),
        sa.Column('what_worked', sa.JSON(), default=list),
        sa.Column('improvements', sa.JSON(), default=list),
        sa.Column('notes_for_next_lesson', sa.Text(), default=''),
        sa.Column('created_at', sa.DateTime(), server_default=sa.func.now()),
        sa.Column('updated_at', sa.DateTime(), server_default=sa.func.now(), onupdate=sa.func.now()),
    )


def downgrade() -> None:
    op.drop_table('lesson_reflections')
