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/*
 * Copyright (c) 2020 Jens Reimann and others.
 *
 * See the NOTICE file(s) distributed with this work for additional
 * information regarding copyright ownership.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0
 *
 * SPDX-License-Identifier: EPL-2.0
 */
use crate::utils::UseOrCreate;

use k8s_openapi::api::core::v1::{Container, ResourceRequirements};
use k8s_openapi::apimachinery::pkg::api::resource::Quantity;

pub trait SetResources {
    fn set_resources<S1, S2, S3>(
        &mut self,
        resource_type: S1,
        request: Option<S2>,
        limit: Option<S3>,
    ) where
        S1: ToString,
        S2: ToString,
        S3: ToString;
}

impl SetResources for ResourceRequirements {
    fn set_resources<S1, S2, S3>(
        &mut self,
        resource_type: S1,
        request: Option<S2>,
        limit: Option<S3>,
    ) where
        S1: ToString,
        S2: ToString,
        S3: ToString,
    {
        self.requests.use_or_create(|requests| match request {
            Some(ref request) => {
                requests.insert(resource_type.to_string(), Quantity(request.to_string()))
            }

            None => requests.remove(&resource_type.to_string()),
        });
        self.limits.use_or_create(|limits| match limit {
            Some(ref limit) => {
                limits.insert(resource_type.to_string(), Quantity(limit.to_string()))
            }

            None => limits.remove(&resource_type.to_string()),
        });
    }
}

impl SetResources for Container {
    fn set_resources<S1, S2, S3>(
        &mut self,
        resource_type: S1,
        request: Option<S2>,
        limit: Option<S3>,
    ) where
        S1: ToString,
        S2: ToString,
        S3: ToString,
    {
        self.resources.use_or_create(|resources| {
            resources.set_resources(resource_type, request, limit);
        });
    }
}