// Copyright 2021 Drone IO, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package main

import (
	"context"
	"fmt"

	"github.com/drone/drone/cmd/drone-server/config"

	"github.com/go-redis/redis/v8"
	"github.com/google/wire"
)

// wire set for loading the external services.
var externalSet = wire.NewSet(
	provideRedisClient,
)

func provideRedisClient(config config.Config) (rdb *redis.Client, err error) {
	if config.Redis.ConnectionString == "" {
		return
	}

	options, err := redis.ParseURL(config.Redis.ConnectionString)
	if err != nil {
		return
	}

	rdb = redis.NewClient(options)

	_, err = rdb.Ping(context.Background()).Result()
	if err != nil {
		err = fmt.Errorf("redis not accessibe: %w", err)
		return
	}

	return
}