Iniital release of DosVault.
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106
migrations/versions/001_initial_schema.py
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106
migrations/versions/001_initial_schema.py
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"""Initial database schema
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Revision ID: 001
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Revises:
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Create Date: 2024-01-01 10:00:00.000000
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"""
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from alembic import op
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import sqlalchemy as sa
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from sqlalchemy.types import TypeDecorator
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from pathlib import Path
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# revision identifiers, used by Alembic.
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revision = '001'
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down_revision = None
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branch_labels = None
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depends_on = None
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# Define the PathType here since it's needed for the migration
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class PathType(TypeDecorator):
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impl = sa.String
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cache_ok = True
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def process_bind_param(self, value, dialect):
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return None if value is None else str(value)
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def process_result_value(self, value, dialect):
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return None if value is None else Path(value)
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def upgrade() -> None:
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# This represents the initial schema from the original system
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# The tables (tags, genre, game, metadata, metadata_genres, metadata_tags)
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# already exist in the database, so this migration is just for tracking
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# If running on a fresh database, these would create the tables:
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# Create tags table
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op.create_table('tags',
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sa.Column('id', sa.Integer(), nullable=False),
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sa.Column('name', sa.String(length=30), nullable=False),
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sa.PrimaryKeyConstraint('id', name=op.f('pk_tags'))
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)
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op.create_index('ix_tags_name', 'tags', ['name'], unique=True)
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# Create genre table
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op.create_table('genre',
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sa.Column('id', sa.Integer(), nullable=False),
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sa.Column('name', sa.String(length=30), nullable=False),
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sa.PrimaryKeyConstraint('id', name=op.f('pk_genre'))
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)
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op.create_index('ix_genre_name', 'genre', ['name'], unique=True)
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# Create game table
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op.create_table('game',
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sa.Column('id', sa.Integer(), nullable=False),
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sa.Column('title', sa.String(length=66), nullable=False),
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sa.Column('path', PathType(), nullable=False),
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sa.PrimaryKeyConstraint('id', name=op.f('pk_game')),
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sa.UniqueConstraint('path', name=op.f('uq_game_path'))
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)
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op.create_index('ix_game_title', 'game', ['title'])
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# Create metadata table
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op.create_table('metadata',
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sa.Column('id', sa.Integer(), nullable=False),
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sa.Column('game_id', sa.Integer(), nullable=False),
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sa.Column('title', sa.String(length=66), nullable=False),
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sa.Column('description', sa.String(), nullable=True),
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sa.Column('year', sa.Integer(), nullable=True),
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sa.Column('developer', sa.String(length=255), nullable=True),
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sa.Column('publisher', sa.String(length=255), nullable=True),
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sa.Column('players', sa.Integer(), nullable=True),
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sa.Column('cover_image', sa.String(), nullable=True),
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sa.Column('screenshot', sa.String(), nullable=True),
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sa.ForeignKeyConstraint(['game_id'], ['game.id'], name=op.f('fk_metadata_game_id_game'), ondelete='CASCADE'),
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sa.PrimaryKeyConstraint('id', name=op.f('pk_metadata')),
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sa.UniqueConstraint('game_id', name=op.f('uq_metadata_game_id'))
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)
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# Create association tables
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op.create_table('metadata_genres',
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sa.Column('metadata_id', sa.Integer(), nullable=False),
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sa.Column('genre_id', sa.Integer(), nullable=False),
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sa.ForeignKeyConstraint(['genre_id'], ['genre.id'], name=op.f('fk_metadata_genres_genre_id_genre'), ondelete='CASCADE'),
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sa.ForeignKeyConstraint(['metadata_id'], ['metadata.id'], name=op.f('fk_metadata_genres_metadata_id_metadata'), ondelete='CASCADE'),
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sa.PrimaryKeyConstraint('metadata_id', 'genre_id', name=op.f('pk_metadata_genres')),
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sa.UniqueConstraint('metadata_id', 'genre_id', name=op.f('uq_metadata_genres_metadata_id'))
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)
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op.create_table('metadata_tags',
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sa.Column('metadata_id', sa.Integer(), nullable=False),
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sa.Column('tag_id', sa.Integer(), nullable=False),
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sa.ForeignKeyConstraint(['metadata_id'], ['metadata.id'], name=op.f('fk_metadata_tags_metadata_id_metadata'), ondelete='CASCADE'),
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sa.ForeignKeyConstraint(['tag_id'], ['tags.id'], name=op.f('fk_metadata_tags_tag_id_tags'), ondelete='CASCADE'),
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sa.PrimaryKeyConstraint('metadata_id', 'tag_id', name=op.f('pk_metadata_tags')),
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sa.UniqueConstraint('metadata_id', 'tag_id', name=op.f('uq_metadata_tags_metadata_id'))
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)
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def downgrade() -> None:
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op.drop_table('metadata_tags')
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op.drop_table('metadata_genres')
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op.drop_table('metadata')
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op.drop_table('game')
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op.drop_table('genre')
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op.drop_table('tags')
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