misc.go

package gofaker

import (
	"encoding/hex"
	"math/rand"

	"github.com/tinygg/gofaker/data"
)

// Bool will generate a random boolean value
func Bool() bool {
	return randIntRange(0, 1) == 1
}

// UUID (version 4) will generate a random unique identifier based upon random nunbers
// Format: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
func UUID() string {
	version := byte(4)
	uuid := make([]byte, 16)
	rand.Read(uuid)

	// Set version
	uuid[6] = (uuid[6] & 0x0f) | (version << 4)

	// Set variant
	uuid[8] = (uuid[8] & 0xbf) | 0x80

	buf := make([]byte, 36)
	var dash byte = '-'
	hex.Encode(buf[0:8], uuid[0:4])
	buf[8] = dash
	hex.Encode(buf[9:13], uuid[4:6])
	buf[13] = dash
	hex.Encode(buf[14:18], uuid[6:8])
	buf[18] = dash
	hex.Encode(buf[19:23], uuid[8:10])
	buf[23] = dash
	hex.Encode(buf[24:], uuid[10:])

	return string(buf)
}

// Categories will return a map string array of available data categories and sub categories
func Categories() map[string][]string {
	types := make(map[string][]string)
	for category, subCategoriesMap := range data.Data() {
		subCategories := make([]string, 0)
		for subType := range subCategoriesMap {
			subCategories = append(subCategories, subType)
		}
		types[category] = subCategories
	}
	return types
}

func addMiscLookup() {
	AddFuncLookup("uuid", Info{
		Display:     "UUID",
		Category:    "misc",
		Description: "Random uuid",
		Example:     "590c1440-9888-45b0-bd51-a817ee07c3f2",
		Output:      "string",
		Call: func(m *map[string][]string, info *Info) (interface{}, error) {
			return UUID(), nil
		},
	})

	AddFuncLookup("bool", Info{
		Display:     "Boolean",
		Category:    "misc",
		Description: "Random boolean",
		Example:     "true",
		Output:      "bool",
		Call: func(m *map[string][]string, info *Info) (interface{}, error) {
			return Bool(), nil
		},
	})

}