"""Add collections and collection_bills tables

Revision ID: 0015
Revises: 0014
"""
from alembic import op
import sqlalchemy as sa
from sqlalchemy.dialects import postgresql

revision = "0015"
down_revision = "0014"
branch_labels = None
depends_on = None


def upgrade():
    op.create_table(
        "collections",
        sa.Column("id", sa.Integer(), primary_key=True, autoincrement=True),
        sa.Column("user_id", sa.Integer(), sa.ForeignKey("users.id", ondelete="CASCADE"), nullable=False),
        sa.Column("name", sa.String(100), nullable=False),
        sa.Column("slug", sa.String(120), nullable=False),
        sa.Column("is_public", sa.Boolean(), nullable=False, server_default="false"),
        sa.Column(
            "share_token",
            postgresql.UUID(as_uuid=False),
            nullable=False,
            server_default=sa.text("gen_random_uuid()"),
        ),
        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.func.now()),
        sa.Column("updated_at", sa.DateTime(timezone=True), server_default=sa.func.now()),
        sa.UniqueConstraint("share_token", name="uq_collections_share_token"),
        sa.UniqueConstraint("user_id", "slug", name="uq_collections_user_slug"),
    )
    op.create_index("ix_collections_user_id", "collections", ["user_id"])
    op.create_index("ix_collections_share_token", "collections", ["share_token"])

    op.create_table(
        "collection_bills",
        sa.Column("id", sa.Integer(), primary_key=True, autoincrement=True),
        sa.Column("collection_id", sa.Integer(), sa.ForeignKey("collections.id", ondelete="CASCADE"), nullable=False),
        sa.Column("bill_id", sa.String(), sa.ForeignKey("bills.bill_id", ondelete="CASCADE"), nullable=False),
        sa.Column("added_at", sa.DateTime(timezone=True), server_default=sa.func.now()),
        sa.UniqueConstraint("collection_id", "bill_id", name="uq_collection_bills_collection_bill"),
    )
    op.create_index("ix_collection_bills_collection_id", "collection_bills", ["collection_id"])
    op.create_index("ix_collection_bills_bill_id", "collection_bills", ["bill_id"])


def downgrade():
    op.drop_table("collection_bills")
    op.drop_table("collections")