refactor: default config directory

cmd/autoscan/config.go

@@ -1,28 +1,34 @@
 package main
 
 import (
-	"github.com/kirsle/configdir"
-	"golang.org/x/sys/unix"
+	"fmt"
 	"os"
 	"path/filepath"
 )
 
-func defaultConfigPath() string {
-	// get binary path
-	bp := getBinaryPath()
-	if dirIsWriteable(bp) == nil {
-		return bp
+func defaultConfigDirectory(app string, filename string) string {
+	// binary path
+	bcd := getBinaryPath()
+	if _, err := os.Stat(filepath.Join(bcd, filename)); err == nil {
+		// there is a config file in the binary path
+		// so use this directory as the default
+		return bcd
 	}
 
-	// binary path is not write-able, use alternative path
-	cp := configdir.LocalConfig("autoscan")
-	if _, err := os.Stat(cp); os.IsNotExist(err) {
-		if e := os.MkdirAll(cp, os.ModePerm); e != nil {
-			panic("failed to create autoscan config directory")
+	// config dir
+	ucd, err := os.UserConfigDir()
+	if err != nil {
+		panic(fmt.Sprintf("userconfigdir: %v", err))
+	}
+
+	acd := filepath.Join(ucd, app)
+	if _, err := os.Stat(acd); os.IsNotExist(err) {
+		if err := os.MkdirAll(acd, os.ModePerm); err != nil {
+			panic(fmt.Sprintf("mkdirall: %v", err))
 		}
 	}
 
-	return cp
+	return acd
 }
 
 func getBinaryPath() string {
@@ -31,14 +37,9 @@ func getBinaryPath() string {
 	if err != nil {
 		// get current working dir
 		if dir, err = os.Getwd(); err != nil {
-			panic("failed to determine current binary location")
+			panic(fmt.Sprintf("getwd: %v", err))
 		}
 	}
 
 	return dir
-}
-
-func dirIsWriteable(dir string) error {
-	// credits: https://stackoverflow.com/questions/20026320/how-to-tell-if-folder-exists-and-is-writable
-	return unix.Access(dir, unix.W_OK)
-}
+}

cmd/autoscan/main.go

@@ -112,9 +112,9 @@ func main() {
 		}),
 		kong.Vars{
 			"version":       fmt.Sprintf("%s (%s@%s)", Version, GitCommit, Timestamp),
-			"config_file":   filepath.Join(defaultConfigPath(), "config.yml"),
-			"log_file":      filepath.Join(defaultConfigPath(), "activity.log"),
-			"database_file": filepath.Join(defaultConfigPath(), "autoscan.db"),
+			"config_file":   filepath.Join(defaultConfigDirectory("autoscan", "config.yml"), "config.yml"),
+			"log_file":      filepath.Join(defaultConfigDirectory("autoscan", "config.yml"), "activity.log"),
+			"database_file": filepath.Join(defaultConfigDirectory("autoscan", "config.yml"), "autoscan.db"),
 		},
 	)
 

go.mod

@@ -7,7 +7,6 @@ require (
 	github.com/alecthomas/kong v0.2.16
 	github.com/fsnotify/fsnotify v1.4.9
 	github.com/justinas/alice v1.2.0
-	github.com/kirsle/configdir v0.0.0-20170128060238-e45d2f54772f
 	github.com/l3uddz/bernard v0.5.1
 	github.com/m-rots/stubbs v1.1.0
 	github.com/mattn/go-sqlite3 v2.0.3+incompatible // indirect
@@ -18,7 +17,7 @@ require (
 	github.com/rs/zerolog v1.20.0
 	golang.org/x/mod v0.4.2 // indirect
 	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
-	golang.org/x/sys v0.0.0-20210313110737-8e9fff1a3a18
+	golang.org/x/sys v0.0.0-20210313110737-8e9fff1a3a18 // indirect
 	golang.org/x/time v0.0.0-20210220033141-f8bda1e9f3ba
 	golang.org/x/tools v0.1.0 // indirect
 	gopkg.in/natefinch/lumberjack.v2 v2.0.0 // indirect

go.sum

@@ -18,8 +18,6 @@ github.com/justinas/alice v1.2.0 h1:+MHSA/vccVCF4Uq37S42jwlkvI2Xzl7zTPCN5BnZNVo=
 github.com/justinas/alice v1.2.0/go.mod h1:fN5HRH/reO/zrUflLfTN43t3vXvKzvZIENsNEe7i7qA=
 github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 h1:Z9n2FFNUXsshfwJMBgNA0RU6/i7WVaAegv3PtuIHPMs=
 github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51/go.mod h1:CzGEWj7cYgsdH8dAjBGEr58BoE7ScuLd+fwFZ44+/x8=
-github.com/kirsle/configdir v0.0.0-20170128060238-e45d2f54772f h1:dKccXx7xA56UNqOcFIbuqFjAWPVtP688j5QMgmo6OHU=
-github.com/kirsle/configdir v0.0.0-20170128060238-e45d2f54772f/go.mod h1:4rEELDSfUAlBSyUjPG0JnaNGjf13JySHFeRdD/3dLP0=
 github.com/l3uddz/bernard v0.5.1 h1:PdkmJn44q4dmix1riBkrvnpb2LVvhyRLwIRhWoc05bo=
 github.com/l3uddz/bernard v0.5.1/go.mod h1:J2ad7LeQl+6Nxc8sGJ8HtQIsv9c9bk2jHxsBt9OIHpo=
 github.com/m-rots/stubbs v1.0.0/go.mod h1:iDS6z2oonw2UMo2l0S1WTPJ9git7FWU4YEo6fq7F2WU=