"""Add user authentication and enhance video fields

Revision ID: a3c56d47f42a
Revises: 1b18a0e65b0d
Create Date: 2025-11-26 14:22:55.689811

"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision: str = 'a3c56d47f42a'
down_revision: Union[str, Sequence[str], None] = '1b18a0e65b0d'
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('users',
    sa.Column('id', sa.Integer(), nullable=False),
    sa.Column('username', sa.String(length=80), nullable=False),
    sa.Column('email', sa.String(length=120), nullable=False),
    sa.Column('password_hash', sa.String(length=255), nullable=False),
    sa.Column('created_at', sa.DateTime(), nullable=False),
    sa.PrimaryKeyConstraint('id')
    )
    op.create_index(op.f('ix_users_email'), 'users', ['email'], unique=True)
    op.create_index(op.f('ix_users_username'), 'users', ['username'], unique=True)
    op.add_column('channels', sa.Column('user_id', sa.Integer(), nullable=False))
    op.add_column('channels', sa.Column('rss_url', sa.String(length=500), nullable=False))
    op.add_column('channels', sa.Column('last_fetched_at', sa.DateTime(), nullable=True))
    op.drop_index(op.f('ix_channels_channel_id'), table_name='channels')
    op.create_index(op.f('ix_channels_channel_id'), 'channels', ['channel_id'], unique=False)
    op.create_index('idx_user_channel', 'channels', ['user_id', 'channel_id'], unique=True)
    op.create_index(op.f('ix_channels_user_id'), 'channels', ['user_id'], unique=False)
    op.create_foreign_key(None, 'channels', 'users', ['user_id'], ['id'])
    op.drop_column('channels', 'last_fetched')
    op.add_column('video_entries', sa.Column('video_id', sa.String(length=50), nullable=False))
    op.add_column('video_entries', sa.Column('video_url', sa.String(length=500), nullable=False))
    op.add_column('video_entries', sa.Column('thumbnail_url', sa.String(length=500), nullable=True))
    op.add_column('video_entries', sa.Column('description', sa.Text(), nullable=True))
    op.add_column('video_entries', sa.Column('published_at', sa.DateTime(), nullable=False))
    op.create_index('idx_published_at', 'video_entries', ['published_at'], unique=False)
    op.create_index('idx_video_id_channel', 'video_entries', ['video_id', 'channel_id'], unique=True)
    op.create_index(op.f('ix_video_entries_published_at'), 'video_entries', ['published_at'], unique=False)
    op.create_index(op.f('ix_video_entries_video_id'), 'video_entries', ['video_id'], unique=False)
    op.create_index(op.f('ix_video_entries_video_url'), 'video_entries', ['video_url'], unique=False)
    op.drop_column('video_entries', 'link')
    # ### end Alembic commands ###


def downgrade() -> None:
    """Downgrade schema."""
    # ### commands auto generated by Alembic - please adjust! ###
    op.add_column('video_entries', sa.Column('link', sa.VARCHAR(length=500), nullable=False))
    op.drop_index(op.f('ix_video_entries_video_url'), table_name='video_entries')
    op.drop_index(op.f('ix_video_entries_video_id'), table_name='video_entries')
    op.drop_index(op.f('ix_video_entries_published_at'), table_name='video_entries')
    op.drop_index('idx_video_id_channel', table_name='video_entries')
    op.drop_index('idx_published_at', table_name='video_entries')
    op.drop_column('video_entries', 'published_at')
    op.drop_column('video_entries', 'description')
    op.drop_column('video_entries', 'thumbnail_url')
    op.drop_column('video_entries', 'video_url')
    op.drop_column('video_entries', 'video_id')
    op.add_column('channels', sa.Column('last_fetched', sa.DATETIME(), nullable=False))
    op.drop_constraint(None, 'channels', type_='foreignkey')
    op.drop_index(op.f('ix_channels_user_id'), table_name='channels')
    op.drop_index('idx_user_channel', table_name='channels')
    op.drop_index(op.f('ix_channels_channel_id'), table_name='channels')
    op.create_index(op.f('ix_channels_channel_id'), 'channels', ['channel_id'], unique=1)
    op.drop_column('channels', 'last_fetched_at')
    op.drop_column('channels', 'rss_url')
    op.drop_column('channels', 'user_id')
    op.drop_index(op.f('ix_users_username'), table_name='users')
    op.drop_index(op.f('ix_users_email'), table_name='users')
    op.drop_table('users')
    # ### end Alembic commands ###