package testutil

import (
	"net"
	"net/url"
	"os"
	"time"

	"github.com/influxdb/influxdb/client"
)

var localhost = "localhost"

// GetLocalHost returns the DOCKER_HOST environment variable, parsing
// out any scheme or ports so that only the IP address is returned.
func GetLocalHost() string {
	if dockerHostVar := os.Getenv("DOCKER_HOST"); dockerHostVar != "" {
		u, err := url.Parse(dockerHostVar)
		if err != nil {
			return dockerHostVar
		}

		// split out the ip addr from the port
		host, _, err := net.SplitHostPort(u.Host)
		if err != nil {
			return dockerHostVar
		}

		return host
	}
	return localhost
}

// MockBatchPoints returns a mock BatchPoints object for using in unit tests
// of telegraf output sinks.
func MockBatchPoints() client.BatchPoints {
	var bp client.BatchPoints
	bp.Time = time.Now()
	bp.Tags = map[string]string{"tag1": "value1"}
	bp.Points = []client.Point{
		{
			Fields: map[string]interface{}{"value": 1.0},
		},
	}
	return bp
}