move any helper methods to common and reuse for params getter

internal/config/params.go

@@ -0,0 +1,140 @@
+package config
+
+import (
+	"errors"
+	"fmt"
+
+	"github.com/jwetzell/showbridge-go/internal/common"
+)
+
+type Params map[string]any
+
+var (
+	ErrParamNotFound     = errors.New("not found")
+	ErrParamNotString    = errors.New("not a string")
+	ErrParamNotNumber    = errors.New("not a number")
+	ErrParamNotInteger   = errors.New("not an integer")
+	ErrParamNotBool      = errors.New("not a boolean")
+	ErrParamNotSlice     = errors.New("not a slice")
+	ErrParamNotByteSlice = errors.New("not a byte slice")
+	ErrParamNotIntSlice  = errors.New("not an int slice")
+)
+
+func (p Params) GetString(key string) (string, error) {
+	value, ok := p[key]
+	if !ok {
+		return "", ErrParamNotFound
+	}
+
+	stringValue, ok := value.(string)
+	if !ok {
+		return "", ErrParamNotString
+	}
+	return stringValue, nil
+}
+
+func (p Params) GetInt(key string) (int, error) {
+	value, ok := p[key]
+	if !ok {
+		return 0, ErrParamNotFound
+	}
+
+	intValue, ok := common.GetAnyAsInt(value)
+	if ok {
+		return intValue, nil
+	}
+
+	return 0, ErrParamNotNumber
+}
+
+func (p Params) GetFloat32(key string) (float32, error) {
+	value, ok := p[key]
+	if !ok {
+		return 0, ErrParamNotFound
+	}
+
+	floatValue, ok := common.GetAnyAsFloat32(value)
+	if ok {
+		return floatValue, nil
+	}
+
+	return 0, ErrParamNotNumber
+}
+
+func (p Params) GetFloat64(key string) (float64, error) {
+	value, ok := p[key]
+	if !ok {
+		return 0, ErrParamNotFound
+	}
+
+	floatValue, ok := common.GetAnyAsFloat64(value)
+	if ok {
+		return floatValue, nil
+	}
+
+	return 0, ErrParamNotNumber
+}
+
+func (p Params) GetBool(key string) (bool, error) {
+	value, ok := p[key]
+	if !ok {
+		return false, ErrParamNotFound
+	}
+
+	boolValue, ok := value.(bool)
+	if !ok {
+		return false, ErrParamNotBool
+	}
+	return boolValue, nil
+}
+
+func (p Params) GetStringSlice(key string) ([]string, error) {
+	value, ok := p[key]
+	if !ok {
+		return nil, ErrParamNotFound
+	}
+
+	interfaceSlice, ok := value.([]any)
+	if !ok {
+		return nil, ErrParamNotSlice
+	}
+
+	stringSlice := make([]string, len(interfaceSlice))
+	for i, v := range interfaceSlice {
+		str, ok := v.(string)
+		if !ok {
+			return nil, fmt.Errorf("element at index %d is not a string", i)
+		}
+		stringSlice[i] = str
+	}
+	return stringSlice, nil
+}
+
+func (p Params) GetIntSlice(key string) ([]int, error) {
+	value, ok := p[key]
+	if !ok {
+		return nil, ErrParamNotFound
+	}
+
+	intSlice, ok := common.GetAnyAsIntSlice(value)
+	if !ok {
+		return nil, ErrParamNotIntSlice
+	}
+
+	return intSlice, nil
+}
+
+func (p Params) GetByteSlice(key string) ([]byte, error) {
+	value, ok := p[key]
+	if !ok {
+		return nil, ErrParamNotFound
+	}
+
+	byteSlice, ok := common.GetAnyAsByteSlice(value)
+
+	if !ok {
+		return nil, ErrParamNotByteSlice
+	}
+
+	return byteSlice, nil
+}