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"""Update_deployment_configs

Previously we had bad deployment config validation

Revision ID: 54e844ebfbc3
Revises: 3177d36ea270
Create Date: 2016-07-24 14:53:39.323105

"""

from __future__ import annotations

from alembic import op
import sqlalchemy as sa

from rally import exceptions
from rally.common.db import sa_types


# revision identifiers, used by Alembic.
revision = "54e844ebfbc3"
down_revision = "3177d36ea270"
branch_labels = None
depends_on = None


deployments_helper = sa.Table(
    "deployments",
    sa.MetaData(),
    sa.Column("id", sa.Integer, primary_key=True, autoincrement=True),
    sa.Column(
        "config",
        sa_types.MutableJSONEncodedDict,
        default={},
        nullable=False,
    ),
)


def _check_user_entry(user: dict[str, str]) -> bool | None:
    """Fixes wrong format of users."""
    if "tenant_name" in user:
        keys = set(user.keys())
        if keys == {
            "username",
            "password",
            "tenant_name",
            "project_domain_name",
            "user_domain_name",
        }:
            if (
                user["user_domain_name"] == ""
                and user["project_domain_name"] == ""
            ):
                # it is credentials of keystone v2 and they were created
                # --fromenv
                del user["user_domain_name"]
                del user["project_domain_name"]
                return True
            else:
                # it looks like keystone v3 credentials
                user["project_name"] = user.pop("tenant_name")
                return True


def upgrade() -> None:
    connection = op.get_bind()
    for deployment in connection.execute(deployments_helper.select()):
        conf = deployment.config
        if conf["type"] != "ExistingCloud":
            continue

        should_update = False

        if _check_user_entry(conf["admin"]):
            should_update = True
        if "users" in conf:
            for user in conf["users"]:
                if _check_user_entry(user):
                    should_update = True

        if conf.get("endpoint_type") == "public":
            del conf["endpoint_type"]
            should_update = True

        if should_update:
            connection.execute(
                deployments_helper.update()
                .where(deployments_helper.c.id == deployment.id)
                .values(config=conf)
            )


def downgrade() -> None:
    raise exceptions.DowngradeNotSupported()
