describe usage in script

.goreleaser.yaml

@@ -14,6 +14,7 @@ builds:
       - linux
       - windows
       - darwin
+    mod_timestamp: "{{ .CommitTimestamp }}"
 archives:
   - replacements:
       darwin: Darwin
@@ -21,6 +22,8 @@ archives:
       windows: Windows
       386: i386
       amd64: x86_64
+    format: binary
+    name_template: "{{ .ProjectName }}_{{ .Version }}_{{ .Os }}_{{ .Arch }}"
 checksum:
   name_template: 'checksums.txt'
 snapshot:

README.md

@@ -1,7 +1,7 @@
 # mullvad-best-server
 ![Build](https://github.com/bastiandoetsch/mullvad-best-server/actions/workflows/go.yml/badge.svg)
 
-Determines the mullvat.net wireguard server with the lowest latency. 
+Determines the mullvad.net server with the lowest latency. 
 
 ## Installation
 
@@ -30,3 +30,15 @@ The `-c` flag allows to give a country code. Else `ch` will be used.
 ## Background
 The program uses `https://api.mullvad.net/www/relays/<SERVER_TYPE/` to get the current server list, pings the ones with the right country
 and outputs the server with the lowest ping.
+
+## Integration into a script
+I use it on my router like this (yes, I know I could have done the whole thing with jq and shell scripting, but wanted to use go for maintainability).
+```
+#!/bin/sh
+set -e
+LATEST_RELEASE=$(curl -sSL https://api.github.com/repos/bastiandoetsch/mullvad-best-server/releases/latest | jq -r '.assets[]| .browser_download_url' | grep Linux_arm64)
+curl -sSL $LATEST_RELEASE > /root/mullvad-best-server
+chmod +x /root/mullvad-best-server
+/usr/bin/wg-quick down $(wg show|grep interface | cut -d: -f2)  || echo "nothing to shut down"
+/usr/bin/wg-quick up "mullvad-$(/root/mullvad-best-server -c de)"
+```

main.go

@@ -24,7 +24,7 @@ func main() {
 	flag.Parse()
 
 	servers := getServers(*typeFlag)
-	bestIndex := selectBestServerIndex(servers, countryFlag)
+	bestIndex := selectBestServerIndex(servers, *countryFlag)
 	best := servers[bestIndex]
 	log.Debug().Interface("server", best).Msg("Best latency server found.")
 	hostname := strings.TrimSuffix(best.Hostname, "-wireguard")
@@ -39,19 +39,11 @@ func main() {
 	}
 }
 
-func selectBestServerIndex(servers []server, country *string) int {
+func selectBestServerIndex(servers []server, country string) int {
 	best := servers[0].Hostname
 	bestIndex := -1
-	allowedCountries := map[string]string{}
-	if *country == "" {
-		allowedCountries["de"] = "1"
-		allowedCountries["ch"] = "1"
-		allowedCountries["at"] = "1"
-	} else {
-		allowedCountries[*country] = "1"
-	}
 	for i, server := range servers {
-		if server.Active && allowedCountries[server.CountryCode] != "" {
+		if server.Active && server.CountryCode == country {
 			duration, err := serverLatency(server)
 			if err == nil {
 				pings[server.Hostname] = duration