✨ Load config from TOML

config/config.go

@@ -1,16 +1,16 @@
 package config
 
 type Config struct {
-	Name    string
-	Env     Env
-	BaseURL string
-	Conn    ConnSettings
+	Name    string       `toml:"name"`
+	Env     Env          `toml:"env"`
+	BaseURL string       `toml:"base_url"`
+	Conn    ConnSettings `toml:"conn"`
 }
 
 type ConnSettings struct {
-	Store              string
-	DSN                string
-	AdditionalSettings map[string]any
+	Store    string         `toml:"store"`
+	DSN      string         `toml:"dsn"`
+	Settings map[string]any `toml:"settings"`
 }
 
 func (c Config) Environment() Env {

config/load.go

@@ -0,0 +1,8 @@
+package config
+
+import "github.com/BurntSushi/toml"
+
+func LoadFromToml(path string) (c Config, err error) {
+	_, err = toml.DecodeFile(path, &c)
+	return
+}

config/load_test.go

@@ -0,0 +1,29 @@
+package config
+
+import (
+	"fmt"
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestLoadTomlMissing(t *testing.T) {
+	_, e := LoadFromToml("not-a-real-filee")
+	assert.Error(t, e)
+}
+
+func TestLoadTomlGood(t *testing.T) {
+	tmp, _ := os.CreateTemp("", "*.toml")
+	defer tmp.Close()
+	fmt.Fprintln(tmp, `name = "Cool"`)
+	fmt.Fprintln(tmp, "[conn]")
+	fmt.Fprintln(tmp, `store = "sqlite"`)
+	fmt.Fprintln(tmp, "[conn.settings]")
+	fmt.Fprintln(tmp, `num = 42`)
+	c, e := LoadFromToml(tmp.Name())
+	assert.NoError(t, e)
+	assert.Equal(t, "Cool", c.Name)
+	assert.Equal(t, "sqlite", c.Conn.Store)
+	assert.Equal(t, int64(42), c.Conn.Settings["num"])
+}