✨ Config.AddOptions and Generator.MakeWithConfig

config.go

@@ -14,10 +14,18 @@ func NewConfig(options ...Option) Config {
 	conf := Config{
 		extension: ".txt",
 		separator: "_",
-		generator: uuidGen,
+		generator: UUID(nil),
 	}
 	for _, opt := range options {
 		opt(&conf)
 	}
 	return conf
 }
+
+// AddOptions creates a new Config with options added.
+func (c Config) AddOptions(options ...Option) Config {
+	for _, opt := range options {
+		opt(&c)
+	}
+	return c
+}

config_test.go

@@ -20,3 +20,12 @@ func TestNewConfWithOpts(t *testing.T) {
 	assert.Equal(t, "", c.extension)
 	assert.Equal(t, "foobar", c.prefix)
 }
+
+func TestConfAddOpts(t *testing.T) {
+	c := Config{original: "hi"}
+	c2 := c.AddOptions(WithOriginalSlug("Hello, my dear"), WithPrefix("yo"))
+	assert.Equal(t, "", c.prefix)
+	assert.Equal(t, "hi", c.original)
+	assert.Equal(t, "hello-my-dear", c2.original)
+	assert.Equal(t, "yo", c2.prefix)
+}

gen_rand.go

@@ -8,17 +8,44 @@ import (
 	"github.com/google/uuid"
 )
 
-func uuidGen(*Config) (string, error) {
-	u, err := uuid.NewRandom()
-	if err != nil {
-		return "", err
-	}
-	return u.String(), nil
+// UUIDer is an interface for generating UUIDs.
+// It is recommended that you use either the UUIDv4 or UUIDv7 variables.
+type UUIDer interface {
+	UUID() (uuid.UUID, error)
 }
 
-// UUID generates a UUIDv4.
-func UUID() Generator {
-	return uuidGen
+// UUIDFunc is a function that generates a UUID.
+type UUIDFunc func() (uuid.UUID, error)
+
+// UUID allows UUIDFunc to be used as a UUIDer.
+func (u UUIDFunc) UUID() (uuid.UUID, error) {
+	return u()
+}
+
+var (
+	// UUIDv1. You probably don't want to use this. It is included for completeness sake.
+	UUIDv1 = UUIDFunc(uuid.NewUUID)
+	// UUIDv4 is the default.
+	UUIDv4 = UUIDFunc(uuid.NewRandom)
+	// UUIDv6 is primarily a replacement for UUIDv1. You probably should use 4 or 7.
+	UUIDv6 = UUIDFunc(uuid.NewV6)
+	// UUIDv7 should be used if you want it sortable by time.
+	UUIDv7 = UUIDFunc(uuid.NewV7)
+)
+
+// UUID generates a UUID. If nil.is passed as an argument,
+// a UUIDv4 is generated.
+func UUID(u UUIDer) Generator {
+	if u == nil {
+		u = UUIDv4
+	}
+	return func(*Config) (string, error) {
+		uu, err := u.UUID()
+		if err != nil {
+			return "", err
+		}
+		return uu.String(), nil
+	}
 }
 
 type randConf struct {

gen_rand_examples_test.go

@@ -7,30 +7,34 @@ import (
 )
 
 func ExampleUUID() {
-	option := nomino.WithGenerator(nomino.UUID())
+	gen := nomino.UUID(nil)
 
-	str, _ := nomino.Make(nomino.NewConfig(option))
+	str, _ := gen.Make()
 	fmt.Println(str)
 
-	str, _ = nomino.Make(nomino.NewConfig(option))
+	str, _ = gen.Make()
+	fmt.Println(str)
+}
+
+func ExampleUUID_v7() {
+	gen := nomino.UUID(nomino.UUIDv7)
+
+	str, _ := gen.Make()
 	fmt.Println(str)
 
-	str, _ = nomino.Make(nomino.NewConfig(option))
+	str, _ = gen.Make()
+	fmt.Println(str)
+
+	str, _ = gen.Make()
 	fmt.Println(str)
 }
 
 func ExampleRandom() {
-	option := nomino.WithGenerator(nomino.Random())
-
-	str, _ := nomino.Make(nomino.NewConfig(option))
+	str, _ := nomino.Random().Make()
 	fmt.Println(str)
 }
 
 func ExampleRandomLength() {
-	option := nomino.WithGenerator(nomino.Random(
-		nomino.RandomLength(32),
-	))
-
-	str, _ := nomino.Make(nomino.NewConfig(option))
+	str, _ := nomino.Random(nomino.RandomLength(32)).Make()
 	fmt.Println(str)
 }

gen_rand_test.go

@@ -9,7 +9,7 @@ import (
 )
 
 func TestUUID(t *testing.T) {
-	st, err := UUID()(nil)
+	st, err := UUID(nil)(nil)
 	assert.NoError(t, err)
 	_, parseErr := uuid.Parse(st)
 	assert.NoError(t, parseErr)
@@ -25,7 +25,7 @@ func TestUUIDFail(t *testing.T) {
 	uuid.SetRand(badRead{})
 	defer uuid.SetRand(nil)
 
-	_, err := UUID()(nil)
+	_, err := UUID(nil)(nil)
 	assert.Equal(t, errors.New("sorry"), err)
 }
 

gen_ts_examples_test.go

@@ -9,8 +9,7 @@ import (
 
 func ExampleTimestamp() {
 	gen := nomino.Timestamp()
-	conf := nomino.NewConfig(nomino.WithGenerator(gen))
-	s, _ := nomino.Make(conf)
+	s, _ := gen.Make()
 	fmt.Println(s)
 }
 
@@ -18,8 +17,7 @@ func ExampleTimestampTime() {
 	tz, _ := time.LoadLocation("America/New_York")
 	ts := time.Date(2009, time.January, 20, 12, 5, 0, 0, tz)
 	gen := nomino.Timestamp(nomino.TimestampTime(ts))
-	conf := nomino.NewConfig(nomino.WithGenerator(gen))
-	s, _ := nomino.Make(conf)
+	s, _ := gen.Make()
 	fmt.Println(s)
 	// Output: 2009-01-20T12-05-00-0500.txt
 }
@@ -28,8 +26,7 @@ func ExampleTimestampFormat() {
 	tz, _ := time.LoadLocation("America/New_York")
 	ts := time.Date(2009, time.January, 20, 12, 5, 0, 0, tz)
 	gen := nomino.Timestamp(nomino.TimestampTime(ts), nomino.TimestampFormat("2006#01#02<>15|04|05-0700"))
-	conf := nomino.NewConfig(nomino.WithGenerator(gen))
-	s, _ := nomino.Make(conf)
+	s, _ := gen.Make()
 	fmt.Println(s)
 	// Output: 2009#01#20<>12|05|00-0500.txt
 }
@@ -38,8 +35,7 @@ func ExampleTimestampUTC() {
 	tz, _ := time.LoadLocation("America/New_York")
 	ts := time.Date(2009, time.January, 20, 12, 5, 0, 0, tz)
 	gen := nomino.Timestamp(nomino.TimestampTime(ts), nomino.TimestampUTC())
-	conf := nomino.NewConfig(nomino.WithGenerator(gen))
-	s, _ := nomino.Make(conf)
+	s, _ := gen.Make()
 	fmt.Println(s)
 	// Output: 2009-01-20T17-05-00.txt
 }

generators.go

@@ -10,10 +10,15 @@ import (
 // for example.
 type Generator func(conf *Config) (string, error)
 
-// Make allows you to generate a new string directly from a generator.
+// Make allows you to generate a new string directly from a Generator.
 func (g Generator) Make(opts ...Option) (string, error) {
-	opts = append(opts, WithGenerator(g))
-	return Make(NewConfig(opts...))
+	return g.MakeWithConfig(NewConfig(opts...))
+}
+
+// MakeWithConfig allows you to generate a new string directly from a Generator
+// with a pre-existing Config.
+func (g Generator) MakeWithConfig(c Config) (string, error) {
+	return Make(c.AddOptions(WithGenerator(g)))
 }
 
 // WithGenerator sets the specified generator