feat(backend): config to set domain

1 files changed, 47 insertions, 1 deletions

diff --git a/backend/config.go b/backend/config.go
index b7624fd..98aeebe 100644
--- a/backend/config.go
+++ b/backend/config.go
@@ -1,3 +1,49 @@
 package backend
 
-type Config struct{}
+import (
+	"errors"
+	"log/slog"
+	"os"
+
+	"github.com/pelletier/go-toml/v2"
+)
+
+type Config struct {
+	Domain string `toml:"domain"`
+}
+
+func (c *Config) DefaultValues() {
+	c.Domain = "example.org"
+}
+
+func LoadConfig(path string) (*Config, bool) {
+	b, err := os.ReadFile(path)
+	var config Config
+	if err != nil {
+		if !errors.Is(err, os.ErrNotExist) {
+			slog.Error("reading config file", "error", err)
+			return nil, false
+		}
+		slog.Warn("config file not found", "path", path)
+		slog.Info("creating a new config file", "path", path)
+		config.DefaultValues()
+		b, err = toml.Marshal(&config)
+		if err != nil {
+			slog.Error("marshalling config file", "error", err)
+			return nil, false
+		}
+		err = os.WriteFile(path, b, 0660)
+		if err != nil {
+			slog.Error("writing config file", "error", err, "path", path)
+		} else {
+			slog.Info("config file created", "path", path)
+		}
+		return nil, false
+	}
+	err = toml.Unmarshal(b, &config)
+	if err != nil {
+		slog.Error("unmarshalling config file", "error", err)
+		return nil, false
+	}
+	return &config, true
+}