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"""Put the default WMS server in the servers part, add some constrains

Revision ID: e7e03dedade3
Revises: daf738d5bae4
Create Date: 2016-08-26 14:39:21.984921
"""

from alembic import op, context

# revision identifiers, used by Alembic.
revision = 'e7e03dedade3'
down_revision = '8117bb9bba16'
branch_labels = None
depends_on = None


def upgrade():
    schema = context.get_context().config.get_main_option('schema')

    op.execute("""
        UPDATE "{schema}".ogc_server
        SET url = 'config://local/mapserv'
        WHERE url IS NULL
    """.format(schema=schema))

    op.alter_column('ogc_server', 'url', nullable=False, schema=schema)
    op.create_unique_constraint('name_unique_ogc_server', 'ogc_server', ['name'], schema=schema)
    op.alter_column('treeitem', 'name', nullable=False, schema=schema)
    op.create_unique_constraint(
        'type_name_unique_treeitem', 'treeitem', ['type', 'name'], schema=schema
    )


def downgrade():
    schema = context.get_context().config.get_main_option('schema')

    op.alter_column('ogc_server', 'url', nullable=True, schema=schema)
    op.drop_constraint('name_unique_ogc_server', 'ogc_server', schema=schema)
    op.alter_column('treeitem', 'name', nullable=True, schema=schema)
    op.drop_constraint('type_name_unique_treeitem', 'treeitem', schema=schema)

    op.execute("""
        UPDATE "{schema}".ogc_server
        SET url = NULL
        WHERE url = 'config://local/mapserv'
    """.format(schema=schema))
