add go-enum toolkit

Makefile

@@ -117,11 +117,15 @@ test:
 pre-commit: fmt
 	@go mod tidy
 
+.PHONY: install-tools
+install-tools: install-protobuf-plugins
+	@go install github.com/abice/go-enum@latest
+
 .PHONY: install-protobuf-plugins
 install-protobuf-plugins:
-	@go install github.com/bufbuild/buf/cmd/buf@v1.28.1
-	@go install github.com/bufbuild/buf/cmd/protoc-gen-buf-breaking@v1.28.1
-	@go install github.com/bufbuild/buf/cmd/protoc-gen-buf-lint@v1.28.1
+	@go install github.com/bufbuild/buf/cmd/buf@latest
+	@go install github.com/bufbuild/buf/cmd/protoc-gen-buf-breaking@latest
+	@go install github.com/bufbuild/buf/cmd/protoc-gen-buf-lint@latest
 	@go install connectrpc.com/connect/cmd/protoc-gen-connect-go@latest
 	@go install github.com/fullstorydev/grpcurl/cmd/grpcurl@latest
 	@go install google.golang.org/protobuf/cmd/protoc-gen-go@latest

internal/model/enum/builtin.go

@@ -0,0 +1,14 @@
+package enum
+
+//go:generate go-enum --names --values --nocase --marshal --mustparse --sqlnullint
+
+/*
+Boolean
+ENUM(
+
+	False, // false
+	True, // true
+
+)
+*/
+type Boolean int

internal/model/enum/builtin_enum.go

@@ -0,0 +1,258 @@
+// Code generated by go-enum DO NOT EDIT.
+// Version:
+// Revision:
+// Build Date:
+// Built By:
+
+package enum
+
+import (
+	"database/sql/driver"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+const (
+	// BooleanFalse is a Boolean of type False.
+	// false
+	BooleanFalse Boolean = iota
+	// BooleanTrue is a Boolean of type True.
+	// true
+	BooleanTrue
+)
+
+var ErrInvalidBoolean = fmt.Errorf("not a valid Boolean, try [%s]", strings.Join(_BooleanNames, ", "))
+
+const _BooleanName = "FalseTrue"
+
+var _BooleanNames = []string{
+	_BooleanName[0:5],
+	_BooleanName[5:9],
+}
+
+// BooleanNames returns a list of possible string values of Boolean.
+func BooleanNames() []string {
+	tmp := make([]string, len(_BooleanNames))
+	copy(tmp, _BooleanNames)
+	return tmp
+}
+
+// BooleanValues returns a list of the values for Boolean
+func BooleanValues() []Boolean {
+	return []Boolean{
+		BooleanFalse,
+		BooleanTrue,
+	}
+}
+
+var _BooleanMap = map[Boolean]string{
+	BooleanFalse: _BooleanName[0:5],
+	BooleanTrue:  _BooleanName[5:9],
+}
+
+// String implements the Stringer interface.
+func (x Boolean) String() string {
+	if str, ok := _BooleanMap[x]; ok {
+		return str
+	}
+	return fmt.Sprintf("Boolean(%d)", x)
+}
+
+// IsValid provides a quick way to determine if the typed value is
+// part of the allowed enumerated values
+func (x Boolean) IsValid() bool {
+	_, ok := _BooleanMap[x]
+	return ok
+}
+
+var _BooleanValue = map[string]Boolean{
+	_BooleanName[0:5]:                  BooleanFalse,
+	strings.ToLower(_BooleanName[0:5]): BooleanFalse,
+	_BooleanName[5:9]:                  BooleanTrue,
+	strings.ToLower(_BooleanName[5:9]): BooleanTrue,
+}
+
+// ParseBoolean attempts to convert a string to a Boolean.
+func ParseBoolean(name string) (Boolean, error) {
+	if x, ok := _BooleanValue[name]; ok {
+		return x, nil
+	}
+	// Case insensitive parse, do a separate lookup to prevent unnecessary cost of lowercasing a string if we don't need to.
+	if x, ok := _BooleanValue[strings.ToLower(name)]; ok {
+		return x, nil
+	}
+	return Boolean(0), fmt.Errorf("%s is %w", name, ErrInvalidBoolean)
+}
+
+// MustParseBoolean converts a string to a Boolean, and panics if is not valid.
+func MustParseBoolean(name string) Boolean {
+	val, err := ParseBoolean(name)
+	if err != nil {
+		panic(err)
+	}
+	return val
+}
+
+// MarshalText implements the text marshaller method.
+func (x Boolean) MarshalText() ([]byte, error) {
+	return []byte(x.String()), nil
+}
+
+// UnmarshalText implements the text unmarshaller method.
+func (x *Boolean) UnmarshalText(text []byte) error {
+	name := string(text)
+	tmp, err := ParseBoolean(name)
+	if err != nil {
+		return err
+	}
+	*x = tmp
+	return nil
+}
+
+var errBooleanNilPtr = errors.New("value pointer is nil") // one per type for package clashes
+
+// Scan implements the Scanner interface.
+func (x *Boolean) Scan(value interface{}) (err error) {
+	if value == nil {
+		*x = Boolean(0)
+		return
+	}
+
+	// A wider range of scannable types.
+	// driver.Value values at the top of the list for expediency
+	switch v := value.(type) {
+	case int64:
+		*x = Boolean(v)
+	case string:
+		*x, err = ParseBoolean(v)
+		if err != nil {
+			// try parsing the integer value as a string
+			if val, verr := strconv.Atoi(v); verr == nil {
+				*x, err = Boolean(val), nil
+			}
+		}
+	case []byte:
+		*x, err = ParseBoolean(string(v))
+		if err != nil {
+			// try parsing the integer value as a string
+			if val, verr := strconv.Atoi(string(v)); verr == nil {
+				*x, err = Boolean(val), nil
+			}
+		}
+	case Boolean:
+		*x = v
+	case int:
+		*x = Boolean(v)
+	case *Boolean:
+		if v == nil {
+			return errBooleanNilPtr
+		}
+		*x = *v
+	case uint:
+		*x = Boolean(v)
+	case uint64:
+		*x = Boolean(v)
+	case *int:
+		if v == nil {
+			return errBooleanNilPtr
+		}
+		*x = Boolean(*v)
+	case *int64:
+		if v == nil {
+			return errBooleanNilPtr
+		}
+		*x = Boolean(*v)
+	case float64: // json marshals everything as a float64 if it's a number
+		*x = Boolean(v)
+	case *float64: // json marshals everything as a float64 if it's a number
+		if v == nil {
+			return errBooleanNilPtr
+		}
+		*x = Boolean(*v)
+	case *uint:
+		if v == nil {
+			return errBooleanNilPtr
+		}
+		*x = Boolean(*v)
+	case *uint64:
+		if v == nil {
+			return errBooleanNilPtr
+		}
+		*x = Boolean(*v)
+	case *string:
+		if v == nil {
+			return errBooleanNilPtr
+		}
+		*x, err = ParseBoolean(*v)
+		if err != nil {
+			// try parsing the integer value as a string
+			if val, verr := strconv.Atoi(*v); verr == nil {
+				*x, err = Boolean(val), nil
+			}
+		}
+	}
+
+	return
+}
+
+// Value implements the driver Valuer interface.
+func (x Boolean) Value() (driver.Value, error) {
+	return int64(x), nil
+}
+
+type NullBoolean struct {
+	Boolean Boolean
+	Valid   bool
+	Set     bool
+}
+
+func NewNullBoolean(val interface{}) (x NullBoolean) {
+	x.Scan(val) // yes, we ignore this error, it will just be an invalid value.
+	return
+}
+
+// Scan implements the Scanner interface.
+func (x *NullBoolean) Scan(value interface{}) (err error) {
+	x.Set = true
+	if value == nil {
+		x.Boolean, x.Valid = Boolean(0), false
+		return
+	}
+
+	err = x.Boolean.Scan(value)
+	x.Valid = (err == nil)
+	return
+}
+
+// Value implements the driver Valuer interface.
+func (x NullBoolean) Value() (driver.Value, error) {
+	if !x.Valid {
+		return nil, nil
+	}
+	// driver.Value accepts int64 for int values.
+	return int64(x.Boolean), nil
+}
+
+// MarshalJSON correctly serializes a NullBoolean to JSON.
+func (n NullBoolean) MarshalJSON() ([]byte, error) {
+	const nullStr = "null"
+	if n.Valid {
+		return json.Marshal(n.Boolean)
+	}
+	return []byte(nullStr), nil
+}
+
+// UnmarshalJSON correctly deserializes a NullBoolean from JSON.
+func (n *NullBoolean) UnmarshalJSON(b []byte) error {
+	n.Set = true
+	var x interface{}
+	err := json.Unmarshal(b, &x)
+	if err != nil {
+		return err
+	}
+	err = n.Scan(x)
+	return err
+}