✨ Load config from file with defaults

config/default.go

@@ -0,0 +1,31 @@
+package config
+
+import (
+	"fmt"
+	"os"
+	fp "path/filepath"
+
+	"github.com/BurntSushi/toml"
+)
+
+const ConfigStr = `
+[input]
+ext = "txt"
+recurse = true
+path = "%s"
+
+[output]
+[output.stdout]
+enabled = true
+[output.stdout.config]
+json = false
+`
+
+func DefaultConfig() (Config, error) {
+	home, _ := os.UserHomeDir()
+	inDir := fp.Join(home, "my-log")
+	s := fmt.Sprintf(ConfigStr, inDir)
+	c := Config{}
+	_, err := toml.Decode(s, &c)
+	return c, err
+}

config/default_test.go

@@ -0,0 +1,18 @@
+package config
+
+import (
+	"os"
+	fp "path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestDefaultConfig(t *testing.T) {
+	home, _ := os.UserHomeDir()
+	inDir := fp.Join(home, "my-log")
+	c, err := DefaultConfig()
+	require.NoError(t, err)
+	assert.Equal(t, inDir, c.Input.Path)
+}

config/load.go

@@ -0,0 +1,26 @@
+package config
+
+import (
+	"os"
+	fp "path/filepath"
+
+	"github.com/BurntSushi/toml"
+)
+
+var ConfigPath string
+
+func init() {
+	conf, _ := os.UserConfigDir()
+	ConfigPath = fp.Join(conf, "my-log", "config.toml")
+}
+
+func Load() (Config, error) {
+	c, _ := DefaultConfig()
+	_, err := os.Stat(ConfigPath)
+	if os.IsNotExist(err) {
+		return c, nil
+	}
+	_, err = toml.DecodeFile(ConfigPath, &c)
+	// @todo get environ
+	return c, err
+}

config/load_test.go

@@ -0,0 +1,29 @@
+package config
+
+import (
+	"fmt"
+	"os"
+	//fp "path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestLoad(t *testing.T) {
+	f, _ := os.CreateTemp("", "test")
+	ConfigPath = f.Name()
+	fmt.Fprint(f, `[input]
+ext = "log"`)
+	c, err := Load()
+	require.NoError(t, err)
+	assert.Equal(t, "log", c.Input.Ext)
+}
+
+func TestLoadIgnoreMissingFile(t *testing.T) {
+	def, _ := DefaultConfig()
+	ConfigPath = "/not/a/real/file"
+	c, err := Load()
+	require.NoError(t, err)
+	assert.Equal(t, def, c)
+}

config/types.go

@@ -0,0 +1,17 @@
+package config
+
+type Config struct {
+	Input   Input
+	Outputs map[string]Output `toml:"output"`
+}
+
+type Input struct {
+	Path    string
+	Recurse bool
+	Ext     string
+}
+
+type Output struct {
+	Enabled bool
+	Config  map[string]any
+}