1 files changed, 98 insertions, 0 deletions
diff --git a/internal/router/api-v1-email-send-verification-code.go b/internal/router/api-v1-email-send-verification-code.go
new file mode 100644
index 0000000..2cde1bd
--- /dev/null
+++ b/internal/router/api-v1-email-send-verification-code.go
@@ -0,0 +1,98 @@
+package router
+
+import (
+	"fmt"
+	"html/template"
+	"log/slog"
+	"net/url"
+	"strings"
+
+	"github.com/SayaAndy/saya-today-web/locale"
+	"github.com/gofiber/fiber/v2"
+)
+
+func init() {
+	assert(0, tm.Add("personal-page-status", "views/partials/personal-page-status.html"))
+}
+
+func Api_V1_Email_SendVerificationCode(l map[string]*locale.LocaleConfig) func(c *fiber.Ctx) error {
+	return func(c *fiber.Ctx) error {
+		c.Set(fiber.HeaderContentType, fiber.MIMETextPlainCharsetUTF8)
+
+		referer := c.Get("Referer", "")
+		if referer == "" {
+			return c.Status(fiber.ErrBadRequest.Code).SendString("'Referer' header is empty")
+		}
+
+		urlStruct, err := url.ParseRequestURI(referer)
+		if err != nil {
+			return c.Status(fiber.ErrBadRequest.Code).SendString(fmt.Sprintf("'Referer' header is invalid: %s", err.Error()))
+		}
+
+		path := urlStruct.EscapedPath()
+		pathParts := strings.Split(strings.Trim(path, "/"), "/")
+		if len(pathParts) != 2 {
+			return c.Status(fiber.ErrBadRequest.Code).SendString("'Referer' header is invalid: expect format '/{lang}/user'")
+		}
+
+		lang := pathParts[0]
+		id := c.IP()
+
+		email := c.FormValue("email")
+		if email == "" {
+			return api_v1_email_sendStatusHtml(c, "email-message", l, "Failed", fiber.ErrUnprocessableEntity.Code, lang, l[lang].UserProfile.EmailEmpty, map[string]string{})
+		}
+
+		isTaken, err := Mailer.MailIsTaken(email)
+		if err != nil {
+			slog.Error("failed to check if address is already taken", slog.String("error", err.Error()))
+			return api_v1_email_sendStatusHtml(c, "email-message", l, "Failed", fiber.ErrUnprocessableEntity.Code, lang, l[lang].UserProfile.VerificationCodeSendingError, map[string]string{})
+		}
+		if isTaken {
+			return api_v1_email_sendStatusHtml(c, "email-message", l, "Failed", fiber.ErrUnprocessableEntity.Code, lang, l[lang].UserProfile.EmailTaken, map[string]string{})
+		}
+
+		if isAllowed, whenAllowed, _ := Mailer.IsAllowedToRetryVerification(id); !isAllowed {
+			return api_v1_email_sendStatusHtml(c, "email-message", l, "Failed", fiber.ErrUnprocessableEntity.Code, lang, strings.ReplaceAll(l[lang].UserProfile.DelayTilVerification, "{}", whenAllowed.Format("2006-01-02 15:04:05 MST")), map[string]string{
+				"striked-end-time": fmt.Sprint(whenAllowed.UnixMilli()),
+			})
+		}
+
+		if previousEmail, _, _ := Mailer.GetInfo(id); previousEmail == email {
+			return api_v1_email_sendStatusHtml(c, "email-message", l, "Failed", fiber.ErrUnprocessableEntity.Code, lang, l[lang].UserProfile.EmailAlreadyValidated, map[string]string{})
+		}
+
+		if err = Mailer.SendVerificationCode(id, email, lang); err != nil {
+			slog.Error("failed to send a verification code", slog.String("error", err.Error()))
+			return api_v1_email_sendStatusHtml(c, "email-message", l, "Failed", fiber.ErrUnprocessableEntity.Code, lang, l[lang].UserProfile.VerificationCodeSendingError, map[string]string{})
+		}
+
+		_, endTime, codeExpiry := Mailer.IsAllowedToRetryVerification(id)
+		return api_v1_email_sendStatusHtml(c, "email-message", l, "OK", fiber.StatusOK, lang, strings.ReplaceAll(l[lang].UserProfile.VerificationCodeSent, "{}", endTime.Format("2006-01-02 15:04:05 MST")), map[string]string{
+			"striked-end-time": fmt.Sprint(endTime.UnixMilli()),
+			"code-expiry-time": fmt.Sprint(codeExpiry.UnixMilli()),
+		})
+	}
+}
+
+func api_v1_email_sendStatusHtml(c *fiber.Ctx, divId string, l map[string]*locale.LocaleConfig, status string, code int, lang string, message string, dataAttributes map[string]string) error {
+	sterileDataset := make(map[string]interface{})
+	for k, v := range dataAttributes {
+		sterileDataset[k] = template.HTMLAttr(fmt.Sprintf("data-%s=\"%s\"", k, template.HTMLEscapeString(v)))
+	}
+
+	content, err := tm.Render("personal-page-status", fiber.Map{
+		"L":              l[lang],
+		"Status":         status,
+		"Message":        message,
+		"StatusId":       divId,
+		"DataAttributes": sterileDataset,
+	})
+	if err != nil {
+		c.Set(fiber.HeaderContentType, fiber.MIMETextPlainCharsetUTF8)
+		slog.Error("failed to render the email status message", slog.String("error", err.Error()), slog.String("div_id", divId), slog.String("message", message))
+		return c.Status(fiber.ErrInternalServerError.Code).SendString("Failed to render the email status message, please ask administrator for a more detailed cause")
+	}
+	c.Set(fiber.HeaderContentType, fiber.MIMETextHTMLCharsetUTF8)
+	return c.Status(code).Send(content)
+}