"""Add mini_stories table

Revision ID: 20251209_mini_stories
Revises: 20251209_word_of_day
Create Date: 2024-12-09

"""
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 = '20251209_mini_stories'
down_revision: Union[str, None] = '20251209_word_of_day'
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    # Удаляем старую таблицу и enum если существуют
    op.execute("DROP TABLE IF EXISTS mini_stories CASCADE")
    op.execute("DROP TYPE IF EXISTS storygenre CASCADE")

    # Создаём enum через raw SQL
    op.execute("CREATE TYPE storygenre AS ENUM ('dialogue', 'news', 'story', 'letter', 'recipe')")

    # Создаём таблицу используя postgresql.ENUM с create_type=False
    story_genre = postgresql.ENUM('dialogue', 'news', 'story', 'letter', 'recipe', name='storygenre', create_type=False)

    op.create_table(
        'mini_stories',
        sa.Column('id', sa.Integer(), nullable=False),
        sa.Column('user_id', sa.Integer(), nullable=False),
        sa.Column('title', sa.String(length=255), nullable=False),
        sa.Column('content', sa.String(length=5000), nullable=False),
        sa.Column('genre', story_genre, nullable=False),
        sa.Column('learning_lang', sa.String(length=5), nullable=False),
        sa.Column('level', sa.String(length=5), nullable=False),
        sa.Column('word_count', sa.Integer(), nullable=True, server_default='0'),
        sa.Column('vocabulary', sa.JSON(), nullable=True),
        sa.Column('questions', sa.JSON(), nullable=True),
        sa.Column('is_completed', sa.Boolean(), nullable=True, server_default='false'),
        sa.Column('correct_answers', sa.Integer(), nullable=True, server_default='0'),
        sa.Column('created_at', sa.DateTime(), nullable=True),
        sa.PrimaryKeyConstraint('id')
    )
    op.create_index('ix_mini_stories_user_id', 'mini_stories', ['user_id'], unique=False)


def downgrade() -> None:
    op.drop_index('ix_mini_stories_user_id', table_name='mini_stories')
    op.drop_table('mini_stories')
    op.execute("DROP TYPE IF EXISTS storygenre CASCADE")