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translator.go
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translator.go
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package translator
import (
"errors"
"fmt"
"io/fs"
"log"
"os"
"path/filepath"
"strings"
"github.com/iancoleman/strcase"
"gopkg.in/yaml.v3"
"github.com/creamsensation/cp/internal/style"
)
type Translator struct {
translates map[string]map[string]string
dir string
}
const (
translatesFolder = "translates"
yamlSuffix = ".yaml"
)
func New(dir string) *Translator {
return &Translator{
translates: make(map[string]map[string]string),
dir: fmt.Sprintf("%s/%s", dir, translatesFolder),
}
}
func (t *Translator) Prepare() {
if _, err := os.Stat(t.dir); os.IsNotExist(err) {
fmt.Println("error: translates folder does not exist")
return
}
t.walk()
}
func (t *Translator) Translate(langCode, key string, args ...map[string]any) string {
langTranslates, ok := t.translates[langCode]
if !ok {
return key
}
translate, ok := langTranslates[key]
if !ok {
return key
}
if strings.Contains(translate, "{{") && strings.Contains(translate, "}}") && len(args) > 0 {
translate = strings.Replace(translate, "{{ ", "{{", -1)
translate = strings.Replace(translate, " }}", "}}", -1)
for ak, av := range args[0] {
translate = strings.Replace(translate, fmt.Sprintf("{{%s}}", ak), fmt.Sprintf("%v", av), -1)
}
}
return translate
}
func (t *Translator) walk() {
if err := filepath.Walk(
t.dir, func(path string, info fs.FileInfo, err error) error {
if info.IsDir() {
return nil
}
if !strings.HasSuffix(info.Name(), yamlSuffix) {
return errors.New("translates must be *.yaml files")
}
lang := strings.TrimSuffix(info.Name(), yamlSuffix)
if t.translates[lang] == nil {
t.translates[lang] = make(map[string]string)
}
dir := strings.TrimPrefix(t.dir, "./")
subpath := strings.TrimPrefix(strings.TrimSuffix(path, info.Name()), dir)
subpath = strings.TrimPrefix(subpath, "/")
subpath = strings.TrimSuffix(subpath, "/")
pathPrefix := t.createPathPrefix(subpath)
if err := t.readYaml(lang, path, pathPrefix); err != nil {
return err
}
return nil
},
); err != nil {
fmt.Printf("Translates prepared: %s\n", style.RedColor.Render("FAIL"))
log.Fatalln(err)
}
fmt.Printf("Translates prepared: %s\n", style.EmeraldColor.Render("SUCCESS"))
}
func (t *Translator) createPathPrefix(path string) string {
if len(path) == 0 {
return ""
}
result := make([]string, 0)
for _, p := range strings.Split(path, "/") {
if len(p) == 0 {
continue
}
result = append(result, strcase.ToKebab(p))
}
return strings.Join(result, ".")
}
func (t *Translator) readYaml(lang, path, pathPrefix string) error {
yamlBytes, err := os.ReadFile(path)
if err != nil {
return err
}
yamlData := make(map[string]any)
if err := yaml.Unmarshal(yamlBytes, yamlData); err != nil {
return err
}
t.parseYaml(lang, pathPrefix, yamlData)
return nil
}
func (t *Translator) parseYaml(lang, prefix string, data map[string]any) {
isPrefix := len(prefix) > 0
for dataKey, item := range data {
var key string
if isPrefix {
key = fmt.Sprintf("%s.%v", prefix, dataKey)
}
if !isPrefix {
key = fmt.Sprintf("%v", dataKey)
}
subdata, ok := item.(map[string]any)
if !ok {
t.translates[lang][key] = fmt.Sprintf("%v", item)
}
if ok {
t.parseYaml(lang, key, subdata)
}
}
}