gunner

go.mod

@@ -0,0 +1,11 @@
+module git.asdf.cafe/abs3nt/gunner
+
+go 1.22.0
+
+require (
+	github.com/cristalhq/aconfig v0.18.5
+	github.com/cristalhq/aconfig/aconfigdotenv v0.17.1
+	sigs.k8s.io/yaml v1.4.0
+)
+
+require github.com/joho/godotenv v1.4.0 // indirect

go.sum

@@ -0,0 +1,13 @@
+github.com/cristalhq/aconfig v0.17.0/go.mod h1:NXaRp+1e6bkO4dJn+wZ71xyaihMDYPtCSvEhMTm/H3E=
+github.com/cristalhq/aconfig v0.18.5 h1:QqXH/Gy2c4QUQJTV2BN8UAuL/rqZ3IwhvxeC8OgzquA=
+github.com/cristalhq/aconfig v0.18.5/go.mod h1:NXaRp+1e6bkO4dJn+wZ71xyaihMDYPtCSvEhMTm/H3E=
+github.com/cristalhq/aconfig/aconfigdotenv v0.17.1 h1:HG2ql5fGe4FLL2fUv6o+o0YRyF1mWEcYkNfWGWD82k4=
+github.com/cristalhq/aconfig/aconfigdotenv v0.17.1/go.mod h1:gQIKkh+HkVcODvMNz/cLbH65Pk9b0r4tfolCOsI8G9I=
+github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
+github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
+github.com/joho/godotenv v1.4.0 h1:3l4+N6zfMWnkbPEXKng2o2/MR5mSwTrBih4ZEkkz1lg=
+github.com/joho/godotenv v1.4.0/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+sigs.k8s.io/yaml v1.4.0 h1:Mk1wCc2gy/F0THH0TAp1QYyJNzRm2KCLy3o5ASXVI5E=
+sigs.k8s.io/yaml v1.4.0/go.mod h1:Ejl7/uTz7PSA4eKMyQCUTnhZYNmLIl+5c2lQPGR2BPY=

gun.go

@@ -0,0 +1,52 @@
+package gun
+
+import (
+	"os"
+	"path"
+
+	"github.com/cristalhq/aconfig"
+	"github.com/cristalhq/aconfig/aconfigdotenv"
+
+	"git.asdf.cafe/abs3nt/gunner/src/yaml"
+)
+
+func LoadApp(i any, appName string) {
+	yamlDecoder := yaml.New()
+	dotenvDecoder := aconfigdotenv.New()
+	configDir, err := os.UserConfigDir()
+	if err != nil {
+		homeDir, err := os.UserHomeDir()
+		if err != nil {
+			panic(err)
+		}
+		configDir = path.Join(homeDir, ".config")
+	}
+
+	filePath := path.Join(configDir, appName)
+
+	loader := aconfig.LoaderFor(i, aconfig.Config{
+		AllowUnknownFields: true,
+		AllowUnknownEnvs:   true,
+		AllowUnknownFlags:  true,
+		SkipFlags:          true,
+		DontGenerateTags:   true,
+		MergeFiles:         true,
+		EnvPrefix:          appName,
+		FlagPrefix:         appName,
+		Files: []string{
+			path.Join(filePath, appName+".yml"),
+			path.Join(filePath, appName+".yaml"),
+			path.Join(filePath, appName+".json"),
+			path.Join(filePath, ".env"),
+		},
+		FileDecoders: map[string]aconfig.FileDecoder{
+			".yaml": yamlDecoder,
+			".yml":  yamlDecoder,
+			".json": yamlDecoder,
+			".env":  dotenvDecoder,
+		},
+	})
+	if err := loader.Load(); err != nil {
+		panic(err)
+	}
+}

src/yaml/yaml.go

@@ -0,0 +1,38 @@
+package yaml
+
+import (
+	"io/fs"
+
+	"sigs.k8s.io/yaml"
+)
+
+// Decoder of YAML files for aconfig.
+type Decoder struct {
+	fsys fs.FS
+}
+
+// New YAML decoder for aconfig.
+func New() *Decoder { return &Decoder{} }
+
+// Format of the decoder.
+func (d *Decoder) Format() string {
+	return "yaml"
+}
+
+// DecodeFile implements aconfig.FileDecoder.
+func (d *Decoder) DecodeFile(filename string) (map[string]interface{}, error) {
+	b, err := fs.ReadFile(d.fsys, filename)
+	if err != nil {
+		return nil, err
+	}
+	var raw map[string]interface{}
+	if err := yaml.Unmarshal(b, &raw); err != nil {
+		return nil, err
+	}
+	return raw, nil
+}
+
+// DecodeFile implements aconfig.FileDecoder.
+func (d *Decoder) Init(fsys fs.FS) {
+	d.fsys = fsys
+}