// Copyright 2021 The Casdoor Authors. All Rights Reserved.
//
// 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 conf

import (
	"fmt"
	"os"
	"runtime"
	"strconv"
	"strings"

	"github.com/astaxie/beego"
)

func GetConfigString(key string) string {
	if value, ok := os.LookupEnv(key); ok {
		return value
	}
	return beego.AppConfig.String(key)
}

func GetConfigBool(key string) (bool, error) {
	value := GetConfigString(key)
	if value == "true" {
		return true, nil
	} else if value == "false" {
		return false, nil
	}
	return false, fmt.Errorf("value %s cannot be converted into bool", value)
}

func GetConfigInt64(key string) (int64, error) {
	value := GetConfigString(key)
	num, err := strconv.ParseInt(value, 10, 64)
	return num, err
}

func init() {
	// this array contains the beego configuration items that may be modified via env
	presetConfigItems := []string{"httpport", "appname"}
	for _, key := range presetConfigItems {
		if value, ok := os.LookupEnv(key); ok {
			beego.AppConfig.Set(key, value)
		}
	}
}

func GetBeegoConfDataSourceName() string {
	dataSourceName := GetConfigString("dataSourceName")

	runningInDocker := os.Getenv("RUNNING_IN_DOCKER")
	if runningInDocker == "true" {
		// https://stackoverflow.com/questions/48546124/what-is-linux-equivalent-of-host-docker-internal
		if runtime.GOOS == "linux" {
			dataSourceName = strings.ReplaceAll(dataSourceName, "localhost", "172.17.0.1")
		} else {
			dataSourceName = strings.ReplaceAll(dataSourceName, "localhost", "host.docker.internal")
		}
	}

	return dataSourceName
}