refactor: rewrite localization for dynamic set and get

feat: medley localnames
feat: integrate package minor updates
fix: on errors with blog client init write correct type

15 files changed, 97 insertions, 61 deletions

diff --git a/internal/blog/b2.go b/internal/blog/b2.go
index 8a4d363..f2ac890 100644
--- a/internal/blog/b2.go
+++ b/internal/blog/b2.go
@@ -2,6 +2,7 @@ package blog
 
 import (
 	"context"
+	"encoding/json"
 	"fmt"
 	"slices"
 	"strings"
@@ -37,6 +38,20 @@ func NewB2Client(cfg *config.StorageConfig) (Client, error) {
 	return &B2Client{b2cl: b2cl, bucket: bucket, prefix: b2cfg.Prefix}, nil
 }
 
+func (c *B2Client) GetMedleys() ([]MedleyEntry, error) {
+	idxRaw, err := c.readAll(MedleysIndexFileName)
+	if err != nil {
+		return nil, fmt.Errorf("read %s: %w", MedleysIndexFileName, err)
+	}
+
+	var idx []MedleyEntry
+	if err := json.Unmarshal(idxRaw, &idx); err != nil {
+		return nil, fmt.Errorf("unmarshal %s: %w", MedleysIndexFileName, err)
+	}
+
+	return idx, nil
+}
+
 func (c *B2Client) Scan(prefix string) ([]*Page, error) {
 	filePaths := []*Page{}
 
@@ -102,7 +117,11 @@ func (c *B2Client) Scan(prefix string) ([]*Page, error) {
 }
 
 func (c *B2Client) ReadAll(path string) ([]byte, error) {
-	obj := c.bucket.Object(c.prefix + path)
+	return c.readAll(c.prefix + path)
+}
+
+func (c *B2Client) readAll(path string) ([]byte, error) {
+	obj := c.bucket.Object(path)
 	if obj == nil {
 		return nil, fmt.Errorf("failed to reference object in B2 bucket")
 	}
diff --git a/internal/blog/client.go b/internal/blog/client.go
index 56bbee4..53eb0fd 100644
--- a/internal/blog/client.go
+++ b/internal/blog/client.go
@@ -17,6 +17,7 @@ type Page struct {
 
 type Client interface {
 	Scan(prefix string) ([]*Page, error)
+	GetMedleys() ([]MedleyEntry, error)
 	ReadAll(path string) ([]byte, error)
 	ReadFrontmatter(path string) (metadata *frontmatter.Metadata, markdown []byte, err error)
 }
diff --git a/internal/blog/index.go b/internal/blog/index.go
index 6c1a560..a09b59e 100644
--- a/internal/blog/index.go
+++ b/internal/blog/index.go
@@ -92,8 +92,9 @@ func (idx *Index) UnmarshalJSON(data []byte) error {
 }
 
 type MedleyEntry struct {
-	Codename string   `json:"codename"`
-	Content  []string `json:"content"`
+	Codename   string            `json:"codename"`
+	Localnames map[string]string `json:"localnames"`
+	Content    []string          `json:"content"`
 }
 
 type MedleyPageEntry struct {
diff --git a/internal/blog/s3.go b/internal/blog/s3.go
index 04fad33..3c1a932 100644
--- a/internal/blog/s3.go
+++ b/internal/blog/s3.go
@@ -10,14 +10,13 @@ import (
 
 	"github.com/SayaAndy/saya-today-web/config"
 	"github.com/SayaAndy/saya-today-web/internal/frontmatter"
+	"github.com/SayaAndy/saya-today-web/l10n"
 	"github.com/aws/aws-sdk-go-v2/aws"
 	awsconfig "github.com/aws/aws-sdk-go-v2/config"
 	"github.com/aws/aws-sdk-go-v2/credentials"
 	"github.com/aws/aws-sdk-go-v2/service/s3"
 )
 
-const s3ScanConcurrency = 32
-
 type S3Client struct {
 	prefix     string
 	bucketName string
@@ -60,6 +59,20 @@ func NewS3Client(cfg *config.StorageConfig) (Client, error) {
 	return &S3Client{s3cfg.Prefix, s3cfg.BucketName, s3cl}, nil
 }
 
+func (c *S3Client) GetMedleys() ([]MedleyEntry, error) {
+	idxRaw, err := c.readAll(MedleysIndexFileName)
+	if err != nil {
+		return nil, fmt.Errorf("read %s: %w", MedleysIndexFileName, err)
+	}
+
+	var idx []MedleyEntry
+	if err := json.Unmarshal(idxRaw, &idx); err != nil {
+		return nil, fmt.Errorf("unmarshal %s: %w", MedleysIndexFileName, err)
+	}
+
+	return idx, nil
+}
+
 func (c *S3Client) Scan(prefix string) ([]*Page, error) {
 	out, err := c.s3cl.GetObject(context.Background(), &s3.GetObjectInput{
 		Bucket: aws.String(c.bucketName),
@@ -156,6 +169,13 @@ func (c *S3Client) Scan(prefix string) ([]*Page, error) {
 		}
 	}
 
+	medleys, _ := c.GetMedleys()
+	for _, medley := range medleys {
+		for locale, localname := range medley.Localnames {
+			l10n.T.SetPath(localname, true, locale, "Medleys", medley.Codename)
+		}
+	}
+
 	return pages, nil
 }
 
diff --git a/internal/mailer/mailer.go b/internal/mailer/mailer.go
index ffa7b30..33db4f7 100644
--- a/internal/mailer/mailer.go
+++ b/internal/mailer/mailer.go
@@ -16,7 +16,7 @@ import (
 
 	"github.com/SayaAndy/saya-today-web/internal/blog"
 	"github.com/SayaAndy/saya-today-web/internal/templatemanager"
-	"github.com/SayaAndy/saya-today-web/locale"
+	"github.com/SayaAndy/saya-today-web/l10n"
 	"github.com/dgraph-io/ristretto/v2"
 	"github.com/gofiber/fiber/v2"
 	"github.com/wneessen/go-mail"
@@ -43,8 +43,6 @@ type Mailer struct {
 
 	hashMap      map[string][]byte
 	hashMapMutex sync.RWMutex
-
-	l map[string]*locale.LocaleConfig
 }
 
 type SubscriptionType int
@@ -55,7 +53,7 @@ const (
 	Specific
 )
 
-func NewMailer(db *sql.DB, clientHost string, mailHost string, publicName string, mailAddress string, username string, password string, salt []byte, localization map[string]*locale.LocaleConfig) (*Mailer, error) {
+func NewMailer(db *sql.DB, clientHost string, mailHost string, publicName string, mailAddress string, username string, password string, salt []byte) (*Mailer, error) {
 	verificationCodes, err := ristretto.NewCache(&ristretto.Config[uint64, string]{
 		NumCounters:            10000,
 		MaxCost:                1 << 20, // 1 MB
@@ -111,7 +109,7 @@ func NewMailer(db *sql.DB, clientHost string, mailHost string, publicName string
 			End        time.Time
 			CodeExpiry time.Time
 		}, 0),
-		l: localization}, nil
+	}, nil
 }
 
 func (m *Mailer) GetHash(id string) []byte {
@@ -261,10 +259,9 @@ func (m *Mailer) SendVerificationCode(userId string, address string, lang string
 	verificationInfo := fmt.Sprintf("%s.%s", base64.RawStdEncoding.EncodeToString([]byte(userId)), base64.RawStdEncoding.EncodeToString([]byte(address)))
 	m.verificationCodes.Set(verificationCode, verificationInfo, int64(len(verificationInfo)+8))
 
-	message.Subject(m.l[lang].Mail.VerifyEmail.Subject)
+	message.Subject(l10n.T.GetPath(lang, "Mail", "VerifyEmail", "Subject").(string))
 
 	msg, err := m.tm.Render("verify-email", fiber.Map{
-		"L":                m.l[lang],
 		"Lang":             lang,
 		"VerificationCode": fmt.Sprintf("%X", verificationCode),
 		"ClientHost":       m.clientHost,
@@ -499,11 +496,10 @@ rowLoop:
 		rand.Read(unsubscribeCodeBytes)
 		unsubscribeCode := binary.LittleEndian.Uint64(unsubscribeCodeBytes)
 
-		unsubscribeFooter := strings.Replace(m.l[post.Lang].Mail.UnsubscribeFooter, "{}", fmt.Sprintf(`<a style="color: #273de1 !important;" href="https://%s/%s/user/unsubscribe?code=%X">`, m.clientHost, post.Lang, unsubscribeCode), 1)
+		unsubscribeFooter := strings.Replace(l10n.T.GetPath(post.Lang, "Mail", "UnsubscribeFooter").(string), "{}", fmt.Sprintf(`<a style="color: #273de1 !important;" href="https://%s/%s/user/unsubscribe?code=%X">`, m.clientHost, post.Lang, unsubscribeCode), 1)
 		unsubscribeFooter = strings.Replace(unsubscribeFooter, "{/}", "</a>", 1)
 
 		msgBody, err := m.tm.Render("new-post", fiber.Map{
-			"L":                 m.l[post.Lang],
 			"Lang":              post.Lang,
 			"Post":              post,
 			"ClientHost":        m.clientHost,
@@ -529,7 +525,7 @@ rowLoop:
 		message.SetMessageID()
 		message.SetDate()
 		message.SetBulk()
-		message.Subject(m.l[post.Lang].Mail.NewPost.Subject)
+		message.Subject(l10n.T.GetPath(post.Lang, "Mail", "NewPost", "Subject").(string))
 		message.SetBodyString(mail.TypeTextHTML, string(msgBody))
 
 		m.unsubscribeCodes.Set(unsubscribeCode, user.userId, 40)
diff --git a/internal/router/handlers/api-v1-email-is-in-verification.go b/internal/router/handlers/api-v1-email-is-in-verification.go
index 4f05f48..b8ae162 100644
--- a/internal/router/handlers/api-v1-email-is-in-verification.go
+++ b/internal/router/handlers/api-v1-email-is-in-verification.go
@@ -6,6 +6,7 @@ import (
 	"strings"
 
 	"github.com/SayaAndy/saya-today-web/internal/router"
+	"github.com/SayaAndy/saya-today-web/l10n"
 	"github.com/gofiber/fiber/v2"
 )
 
@@ -49,7 +50,7 @@ func (r *OngoingVerificationHandler) Render(c *fiber.Ctx, supplements *router.Su
 	if !isAllowed {
 		sterileDataset["striked-end-time"] = template.HTMLAttr(fmt.Sprintf("data-striked-end-time=\"%d\"", whenAllowed.UnixMilli()))
 		templateMap["Status"] = "Neutral"
-		templateMap["Message"] = strings.ReplaceAll(supplements.Localization[lang].UserProfile.DelayTilVerification, "{}", whenAllowed.Format("2006-01-02 15:04:05 MST"))
+		templateMap["Message"] = strings.ReplaceAll(l10n.T.GetPath(lang, "UserProfile", "DelayTilVerification").(string), "{}", whenAllowed.Format("2006-01-02 15:04:05 MST"))
 	} else {
 		templateMap["Status"] = "OK"
 		templateMap["Message"] = ""
diff --git a/internal/router/handlers/api-v1-email-send-verification-code.go b/internal/router/handlers/api-v1-email-send-verification-code.go
index 0b53efa..ea8df4d 100644
--- a/internal/router/handlers/api-v1-email-send-verification-code.go
+++ b/internal/router/handlers/api-v1-email-send-verification-code.go
@@ -7,6 +7,7 @@ import (
 	"strings"
 
 	"github.com/SayaAndy/saya-today-web/internal/router"
+	"github.com/SayaAndy/saya-today-web/l10n"
 	"github.com/gofiber/fiber/v2"
 )
 
@@ -49,27 +50,27 @@ func (r *SendVerificationCodeHandler) Render(c *fiber.Ctx, supplements *router.S
 	email := c.FormValue("email")
 	if email == "" {
 		templateMap["Status"] = "Failed"
-		templateMap["Message"] = supplements.Localization[lang].UserProfile.EmailEmpty
+		templateMap["Message"] = l10n.T.GetPath(lang, "UserProfile", "EmailEmpty").(string)
 		return fiber.StatusUnprocessableEntity, nil
 	}
 
 	isTaken, err := supplements.Mailer.MailIsTaken(email)
 	if err != nil {
 		templateMap["Status"] = "Failed"
-		templateMap["Message"] = supplements.Localization[lang].UserProfile.VerificationCodeSendingError
+		templateMap["Message"] = l10n.T.GetPath(lang, "UserProfile", "VerificationCodeSendingError").(string)
 		slog.Error("failed to check if address is already taken", slog.String("error", err.Error()))
 		return fiber.StatusUnprocessableEntity, nil
 	}
 
 	if isTaken {
 		templateMap["Status"] = "Failed"
-		templateMap["Message"] = supplements.Localization[lang].UserProfile.EmailTaken
+		templateMap["Message"] = l10n.T.GetPath(lang, "UserProfile", "EmailTaken").(string)
 		return fiber.StatusUnprocessableEntity, nil
 	}
 
 	if isAllowed, whenAllowed, _ := supplements.Mailer.IsAllowedToRetryVerification(id); !isAllowed {
 		templateMap["Status"] = "Failed"
-		templateMap["Message"] = strings.ReplaceAll(supplements.Localization[lang].UserProfile.DelayTilVerification, "{}", whenAllowed.Format("2006-01-02 15:04:05 MST"))
+		templateMap["Message"] = strings.ReplaceAll(l10n.T.GetPath(lang, "UserProfile", "DelayTilVerification").(string), "{}", whenAllowed.Format("2006-01-02 15:04:05 MST"))
 		templateMap["DataAttributes"] = map[string]any{
 			"striked-end-time": template.HTMLAttr(fmt.Sprintf("data-striked-end-time=\"%d\"", whenAllowed.UnixMilli())),
 		}
@@ -78,20 +79,20 @@ func (r *SendVerificationCodeHandler) Render(c *fiber.Ctx, supplements *router.S
 
 	if previousEmail, _, _ := supplements.Mailer.GetInfo(supplements.Mailer.GetHash(id)); previousEmail == email {
 		templateMap["Status"] = "Failed"
-		templateMap["Message"] = supplements.Localization[lang].UserProfile.EmailAlreadyValidated
+		templateMap["Message"] = l10n.T.GetPath(lang, "UserProfile", "EmailAlreadyValidated").(string)
 		return fiber.StatusUnprocessableEntity, nil
 	}
 
 	if err = supplements.Mailer.SendVerificationCode(id, email, lang); err != nil {
 		templateMap["Status"] = "Failed"
-		templateMap["Message"] = supplements.Localization[lang].UserProfile.VerificationCodeSendingError
+		templateMap["Message"] = l10n.T.GetPath(lang, "UserProfile", "VerificationCodeSendingError").(string)
 		slog.Error("failed to send a verification code", slog.String("error", err.Error()))
 		return fiber.StatusUnprocessableEntity, nil
 	}
 
 	_, endTime, codeExpiry := supplements.Mailer.IsAllowedToRetryVerification(id)
 	templateMap["Status"] = "OK"
-	templateMap["Message"] = supplements.Localization[lang].UserProfile.VerificationCodeSent
+	templateMap["Message"] = l10n.T.GetPath(lang, "UserProfile", "VerificationCodeSent").(string)
 	templateMap["DataAttributes"] = map[string]any{
 		"striked-end-time": template.HTMLAttr(fmt.Sprintf("data-striked-end-time=\"%d\"", endTime.UnixMilli())),
 		"code-expiry-time": template.HTMLAttr(fmt.Sprintf("data-code-expiry-time=\"%d\"", codeExpiry.UnixMilli())),
diff --git a/internal/router/handlers/api-v1-email-verify.go b/internal/router/handlers/api-v1-email-verify.go
index ace1870..65ad6d9 100644
--- a/internal/router/handlers/api-v1-email-verify.go
+++ b/internal/router/handlers/api-v1-email-verify.go
@@ -5,6 +5,7 @@ import (
 	"log/slog"
 
 	"github.com/SayaAndy/saya-today-web/internal/router"
+	"github.com/SayaAndy/saya-today-web/l10n"
 	"github.com/gofiber/fiber/v2"
 )
 
@@ -46,19 +47,19 @@ func (r *VerifyCodeHandler) Render(c *fiber.Ctx, supplements *router.Supplements
 
 	if verificationCode == "" {
 		templateMap["Status"] = "Failed"
-		templateMap["Message"] = supplements.Localization[lang].UserProfile.VerificationEmpty
+		templateMap["Message"] = l10n.T.GetPath(lang, "UserProfile", "VerificationEmpty").(string)
 		return fiber.StatusUnprocessableEntity, nil
 	}
 
 	if err = supplements.Mailer.Verify(verificationCode, lang); err != nil {
 		slog.Warn("verification code is invalid", slog.String("verification_code", verificationCode), slog.String("error", err.Error()))
 		templateMap["Status"] = "Failed"
-		templateMap["Message"] = supplements.Localization[lang].UserProfile.VerificationFailed
+		templateMap["Message"] = l10n.T.GetPath(lang, "UserProfile", "VerificationFailed").(string)
 		return fiber.StatusUnprocessableEntity, nil
 	}
 
 	templateMap["Status"] = "OK"
-	templateMap["Message"] = supplements.Localization[lang].UserProfile.VerificationSuccess
+	templateMap["Message"] = l10n.T.GetPath(lang, "UserProfile", "VerificationSuccess").(string)
 	templateMap["DataAttributes"] = map[string]any{
 		"hide-verification-panel": template.HTMLAttr("data-code-expiry-time=\"true\""),
 	}
diff --git a/internal/router/handlers/api-v1-subs-put.go b/internal/router/handlers/api-v1-subs-put.go
index 32fba7e..12dc5cf 100644
--- a/internal/router/handlers/api-v1-subs-put.go
+++ b/internal/router/handlers/api-v1-subs-put.go
@@ -3,6 +3,7 @@ package handlers
 import (
 	"github.com/SayaAndy/saya-today-web/internal/mailer"
 	"github.com/SayaAndy/saya-today-web/internal/router"
+	"github.com/SayaAndy/saya-today-web/l10n"
 	"github.com/gofiber/fiber/v2"
 )
 
@@ -52,18 +53,18 @@ func (r *PutSubsHandler) Render(c *fiber.Ctx, supplements *router.Supplements, l
 		subscriptionTypeEnum = mailer.Specific
 	default:
 		templateMap["Status"] = "Failed"
-		templateMap["Message"] = supplements.Localization[lang].UserProfile.SubscribeInvalidType
+		templateMap["Message"] = l10n.T.GetPath(lang, "UserProfile", "SubscribeInvalidType").(string)
 		return fiber.StatusUnprocessableEntity, nil
 	}
 
 	specificTags := c.FormValue("tags_picked")
 	if err = supplements.Mailer.Subscribe(supplements.Mailer.GetHash(c.IP()), subscriptionTypeEnum, specificTags); err != nil {
 		templateMap["Status"] = "Failed"
-		templateMap["Message"] = supplements.Localization[lang].UserProfile.FailedToSubscribe
+		templateMap["Message"] = l10n.T.GetPath(lang, "UserProfile", "FailedToSubscribe").(string)
 		return fiber.StatusUnprocessableEntity, nil
 	}
 
 	templateMap["Status"] = "OK"
-	templateMap["Message"] = supplements.Localization[lang].UserProfile.SubscribedSuccessfully
+	templateMap["Message"] = l10n.T.GetPath(lang, "UserProfile", "SubscribedSuccessfully").(string)
 	return fiber.StatusOK, nil
 }
diff --git a/internal/router/handlers/lang-blog.go b/internal/router/handlers/lang-blog.go
index 9f7947b..c31c2eb 100644
--- a/internal/router/handlers/lang-blog.go
+++ b/internal/router/handlers/lang-blog.go
@@ -11,6 +11,7 @@ import (
 
 	"github.com/SayaAndy/saya-today-web/internal/blog"
 	"github.com/SayaAndy/saya-today-web/internal/router"
+	"github.com/SayaAndy/saya-today-web/l10n"
 	"github.com/gofiber/fiber/v2"
 )
 
@@ -57,8 +58,8 @@ func (r *CatalogueHandler) SitemapInfo(supplements *router.Supplements) []router
 
 func (r *CatalogueHandler) AddMeta(c *fiber.Ctx, supplements *router.Supplements, lang string, templateMap fiber.Map) (meta []router.MetaField, err error) {
 	return []router.MetaField{
-		{Property: "og:title", Content: supplements.Localization[lang].BlogSearch.Header},
-		{Property: "og:description", Content: supplements.Localization[lang].BlogSearch.Description},
+		{Property: "og:title", Content: l10n.T.GetPath(lang, "BlogSearch", "Header").(string)},
+		{Property: "og:description", Content: l10n.T.GetPath(lang, "BlogSearch", "Description").(string)},
 		{Property: "og:url", Content: fmt.Sprintf("%s/%s/blog", templateMap["CanonicalEndpoint"], lang)},
 		{Property: "og:type", Content: "website"},
 	}, nil
@@ -85,14 +86,14 @@ func (r *CatalogueHandler) RenderBody(c *fiber.Ctx, supplements *router.Suppleme
 	templateMap["Tags"] = tagsArray
 	templateMap["QuerySort"] = querySort
 	templateMap["QueryTags"] = strings.Join(queryTags, ",")
-	templateMap["Title"] = supplements.Localization[lang].BlogSearch.Header
+	templateMap["Title"] = l10n.T.GetPath(lang, "BlogSearch", "Header").(string)
 	templateMap["PreviousBlogPage"] = previousBlogPage
 
 	return fiber.StatusOK, nil
 }
 
 func (r *CatalogueHandler) RenderHeader(c *fiber.Ctx, supplements *router.Supplements, lang string, templateMap fiber.Map) (statusCode int, err error) {
-	templateMap["Title"] = supplements.Localization[lang].BlogSearch.Header
+	templateMap["Title"] = l10n.T.GetPath(lang, "BlogSearch", "Header").(string)
 	return fiber.StatusOK, nil
 }
 
diff --git a/internal/router/handlers/lang-user-unsubscribe.go b/internal/router/handlers/lang-user-unsubscribe.go
index 4fbd244..e22d854 100644
--- a/internal/router/handlers/lang-user-unsubscribe.go
+++ b/internal/router/handlers/lang-user-unsubscribe.go
@@ -4,6 +4,7 @@ import (
 	"log/slog"
 
 	"github.com/SayaAndy/saya-today-web/internal/router"
+	"github.com/SayaAndy/saya-today-web/l10n"
 	"github.com/gofiber/fiber/v2"
 )
 
@@ -39,24 +40,24 @@ func (r *UnsubscribeHandler) Render(c *fiber.Ctx, supplements *router.Supplement
 	if unsubscribeCode == "" {
 		statusColor = "0, 0, 255"
 		statusEmoji = "(╭ರ_•́)"
-		statusText = supplements.Localization[lang].UnsubscribePage.UnsetCode
+		statusText = l10n.T.GetPath(lang, "UnsubscribePage", "UnsetCode").(string)
 		status = fiber.ErrBadRequest.Code
 	} else if clientError, serverError := supplements.Mailer.Unsubscribe(unsubscribeCode); clientError != nil {
 		slog.Info("got a client error when unsubscribing", slog.String("error", clientError.Error()))
 		statusColor = "255, 0, 0"
 		statusEmoji = "(͠≖~≖  ͡ )"
-		statusText = supplements.Localization[lang].UnsubscribePage.InvalidCode
+		statusText = l10n.T.GetPath(lang, "UnsubscribePage", "InvalidCode").(string)
 		status = fiber.ErrBadRequest.Code
 	} else if serverError != nil {
 		slog.Error("got a server error when unsubscribing", slog.String("error", serverError.Error()))
 		statusColor = "255, 128, 0"
 		statusEmoji = "( ˶°ㅁ°) !!"
-		statusText = supplements.Localization[lang].UnsubscribePage.OnServerError
+		statusText = l10n.T.GetPath(lang, "UnsubscribePage", "OnServerError").(string)
 		status = fiber.ErrInternalServerError.Code
 	} else {
 		statusColor = "0, 255, 0"
 		statusEmoji = "♡⸜(˶˃ ᵕ ˂˶)⸝♡"
-		statusText = supplements.Localization[lang].UnsubscribePage.Success
+		statusText = l10n.T.GetPath(lang, "UnsubscribePage", "Success").(string)
 		status = fiber.StatusOK
 	}
 
diff --git a/internal/router/handlers/lang-user.go b/internal/router/handlers/lang-user.go
index 0dda529..085a9aa 100644
--- a/internal/router/handlers/lang-user.go
+++ b/internal/router/handlers/lang-user.go
@@ -6,6 +6,7 @@ import (
 
 	"github.com/SayaAndy/saya-today-web/internal/mailer"
 	"github.com/SayaAndy/saya-today-web/internal/router"
+	"github.com/SayaAndy/saya-today-web/l10n"
 	"github.com/gofiber/fiber/v2"
 )
 
@@ -40,15 +41,15 @@ func (r *UserHandler) ToValidateLang() router.LangSetting {
 func (r *UserHandler) AddMeta(c *fiber.Ctx, supplements *router.Supplements, lang string, templateMap fiber.Map) (meta []router.MetaField, err error) {
 	return []router.MetaField{
 		{Name: "robots", Content: "noindex,nofollow"},
-		{Property: "og:title", Content: supplements.Localization[lang].UserProfile.Header},
-		{Property: "og:description", Content: supplements.Localization[lang].UserProfile.Description},
+		{Property: "og:title", Content: l10n.T.GetPath(lang, "UserProfile", "Header").(string)},
+		{Property: "og:description", Content: l10n.T.GetPath(lang, "UserProfile", "Description").(string)},
 		{Property: "og:url", Content: fmt.Sprintf("%s/%s/user", templateMap["CanonicalEndpoint"], lang)},
 		{Property: "og:type", Content: "website"},
 	}, nil
 }
 
 func (r *UserHandler) RenderBody(c *fiber.Ctx, supplements *router.Supplements, lang string, templateMap fiber.Map) (statusCode int, err error) {
-	templateMap["Title"] = supplements.Localization[lang].UserProfile.Header
+	templateMap["Title"] = l10n.T.GetPath(lang, "UserProfile", "Header").(string)
 
 	email, _, err := supplements.Mailer.GetInfo(supplements.Mailer.GetHash(c.IP()))
 	if err != nil {
@@ -83,6 +84,6 @@ func (r *UserHandler) RenderBody(c *fiber.Ctx, supplements *router.Supplements,
 }
 
 func (r *UserHandler) RenderHeader(c *fiber.Ctx, supplements *router.Supplements, lang string, templateMap fiber.Map) (statusCode int, err error) {
-	templateMap["Title"] = supplements.Localization[lang].UserProfile.Header
+	templateMap["Title"] = l10n.T.GetPath(lang, "UserProfile", "Header").(string)
 	return fiber.StatusOK, nil
 }
diff --git a/internal/router/handlers/lang.go b/internal/router/handlers/lang.go
index 25b5036..cc0b33b 100644
--- a/internal/router/handlers/lang.go
+++ b/internal/router/handlers/lang.go
@@ -6,6 +6,7 @@ import (
 	"time"
 
 	"github.com/SayaAndy/saya-today-web/internal/router"
+	"github.com/SayaAndy/saya-today-web/l10n"
 	"github.com/gofiber/fiber/v2"
 )
 
@@ -51,8 +52,8 @@ func (r *HomeHandler) SitemapInfo(supplements *router.Supplements) []router.Site
 
 func (r *HomeHandler) AddMeta(c *fiber.Ctx, supplements *router.Supplements, lang string, templateMap fiber.Map) (meta []router.MetaField, err error) {
 	return []router.MetaField{
-		{Property: "og:title", Content: supplements.Localization[lang].HomePage.Header},
-		{Property: "og:description", Content: supplements.Localization[lang].HomePage.HomePageDescription},
+		{Property: "og:title", Content: l10n.T.GetPath(lang, "HomePage", "Header").(string)},
+		{Property: "og:description", Content: l10n.T.GetPath(lang, "HomePage", "HomePageDescription").(string)},
 		{Property: "og:image", Content: fmt.Sprintf(
 			supplements.PhotoStorage.HomePageGifs.BaseUrl,
 			supplements.PhotoStorage.HomePageGifs.Indexes[rand.Int()%len(supplements.PhotoStorage.HomePageGifs.Indexes)],
@@ -63,7 +64,7 @@ func (r *HomeHandler) AddMeta(c *fiber.Ctx, supplements *router.Supplements, lan
 }
 
 func (r *HomeHandler) RenderBody(c *fiber.Ctx, supplements *router.Supplements, lang string, templateMap fiber.Map) (statusCode int, err error) {
-	templateMap["Title"] = supplements.Localization[lang].HomePage.Header
+	templateMap["Title"] = l10n.T.GetPath(lang, "HomePage", "Header").(string)
 	templateMap["FilledHeartCount"] = uint(40)
 	templateMap["OutlineHeartCount"] = uint(40)
 	templateMap["GifUrl"] = fmt.Sprintf(
@@ -75,6 +76,6 @@ func (r *HomeHandler) RenderBody(c *fiber.Ctx, supplements *router.Supplements,
 }
 
 func (r *HomeHandler) RenderHeader(c *fiber.Ctx, supplements *router.Supplements, lang string, templateMap fiber.Map) (statusCode int, err error) {
-	templateMap["Title"] = supplements.Localization[lang].HomePage.Header
+	templateMap["Title"] = l10n.T.GetPath(lang, "HomePage", "Header").(string)
 	return fiber.StatusOK, nil
 }
diff --git a/internal/router/router.go b/internal/router/router.go
index a1208e0..43d6138 100644
--- a/internal/router/router.go
+++ b/internal/router/router.go
@@ -23,7 +23,6 @@ import (
 	"github.com/SayaAndy/saya-today-web/internal/mailer"
 	"github.com/SayaAndy/saya-today-web/internal/tailwind"
 	"github.com/SayaAndy/saya-today-web/internal/templatemanager"
-	"github.com/SayaAndy/saya-today-web/locale"
 	"github.com/dgraph-io/ristretto/v2"
 	"github.com/gofiber/fiber/v2"
 	"github.com/gofiber/fiber/v2/middleware/compress"
@@ -95,7 +94,6 @@ type Route interface {
 type Supplements struct {
 	DB                 *sql.DB
 	BlogClient         blog.Client
-	Localization       map[string]*locale.LocaleConfig
 	AvailableLanguages []config.AvailableLanguageConfig
 	ClientCache        *ClientCache
 	PageCache          *ristretto.Cache[string, []byte]
@@ -149,16 +147,7 @@ func NewRouter(cfg *config.Config) (*Router, error) {
 
 	supplements.BlogClient, err = blog.NewClientMap[cfg.BlogPages.Storage.Type](&cfg.BlogPages.Storage)
 	if err != nil {
-		return nil, fmt.Errorf("fail to initialize b2 client: %w", err)
-	}
-
-	supplements.Localization = make(map[string]*locale.LocaleConfig, len(cfg.AvailableLanguages))
-	for _, lang := range cfg.AvailableLanguages {
-		localeCfg, err := locale.InitConfig(cfg.LocalePath + lang.LocFile)
-		if err != nil {
-			return nil, fmt.Errorf("fail to initialize a locale: %w", err)
-		}
-		supplements.Localization[lang.Name] = localeCfg
+		return nil, fmt.Errorf("fail to initialize blog client: type %s: %w", cfg.BlogPages.Storage.Type, err)
 	}
 
 	supplements.MarkdownRenderer = goldmark.New(
@@ -200,7 +189,7 @@ func NewRouter(cfg *config.Config) (*Router, error) {
 	}
 
 	supplements.Mailer, err = mailer.NewMailer(supplements.DB, cfg.Mail.ClientHost, cfg.Mail.MailHost,
-		cfg.Mail.PublicName, cfg.Mail.MailAddress, cfg.Mail.Username, cfg.Mail.Password, []byte(cfg.Mail.Salt), supplements.Localization)
+		cfg.Mail.PublicName, cfg.Mail.MailAddress, cfg.Mail.Username, cfg.Mail.Password, []byte(cfg.Mail.Salt))
 	if err != nil {
 		return nil, fmt.Errorf("fail to initialize mailer: %w", err)
 	}
@@ -314,7 +303,6 @@ func (r *Router) InitRoutes() (err error) {
 				}
 
 				defaultMap := fiber.Map{
-					"L":                    r.supplements.Localization[lang],
 					"Lang":                 lang,
 					"Path":                 trimmedPath,
 					"QueryString":          queryString,
@@ -467,7 +455,6 @@ func (r *Router) generalPage(c *fiber.Ctx, route Route, lang string) error {
 	}
 
 	valueMap := fiber.Map{
-		"L":                    r.supplements.Localization[lang],
 		"Lang":                 lang,
 		"Path":                 trimmedPath,
 		"QueryString":          queryString,
@@ -593,7 +580,6 @@ func (r *Router) generalPageSegment(c *fiber.Ctx, part string) error {
 
 	var statusCode int
 	defaultMap := fiber.Map{
-		"L":                    r.supplements.Localization[lang],
 		"Lang":                 lang,
 		"Path":                 strings.Trim(path, "/"),
 		"QueryString":          queryString,
diff --git a/internal/templatemanager/templatemanager.go b/internal/templatemanager/templatemanager.go
index 9d14e15..5c84418 100644
--- a/internal/templatemanager/templatemanager.go
+++ b/internal/templatemanager/templatemanager.go
@@ -8,6 +8,8 @@ import (
 	"path/filepath"
 	"strings"
 	"time"
+
+	"github.com/SayaAndy/saya-today-web/l10n"
 )
 
 type TemplateManager struct {
@@ -38,6 +40,9 @@ var templateFuncMap = template.FuncMap{
 	"fdiv": func(a, b int) float64 {
 		return float64(a) / float64(b)
 	},
+	"l": func(path ...any) any {
+		return l10n.T.GetPath(path...)
+	},
 }
 
 func NewTemplateManager(templates ...TemplateManagerTemplates) (*TemplateManager, error) {