add drug dosages parsing, add postgres db

alembic/versions/2025_08_06_1933-c509dcf806d4_add_drug_table.py

@@ -0,0 +1,48 @@
+"""add drug table
+
+Revision ID: c509dcf806d4
+Revises: 
+Create Date: 2025-08-06 19:33:52.814812
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = 'c509dcf806d4'
+down_revision: Union[str, Sequence[str], None] = None
+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('drugs',
+    sa.Column('id', sa.BigInteger(), nullable=False),
+    sa.Column('name', sa.String(), nullable=False),
+    sa.Column('dosage', sa.Float(), nullable=False),
+    sa.Column('dosage_unit', sa.String(), nullable=False),
+    sa.Column('unit_price', sa.Float(), nullable=False),
+    sa.Column('description', sa.Text(), nullable=True),
+    sa.PrimaryKeyConstraint('id')
+    )
+    with op.batch_alter_table('drugs', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_drugs_id'), ['id'], unique=False)
+        batch_op.create_index(batch_op.f('ix_drugs_name'), ['name'], unique=False)
+
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('drugs', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_drugs_name'))
+        batch_op.drop_index(batch_op.f('ix_drugs_id'))
+
+    op.drop_table('drugs')
+    # ### end Alembic commands ###