package smshandler

import (
	"strings"

	"github.com/gin-gonic/gin"

	smsentity "spark-server/internal/module/sms/entity"
	smslogic "spark-server/internal/module/sms/logic"
	"spark-server/internal/pkg/errs"
	"spark-server/internal/pkg/i18n"
	"spark-server/internal/pkg/reqctx"
	"spark-server/internal/pkg/validate"
	"spark-server/internal/transport/http/respond"
)

const headerXLanguage = "X-Language"

// Handler is the verification-code HTTP controller.
type Handler struct {
	sms *smslogic.Service
}

func New(sms *smslogic.Service) *Handler {
	return &Handler{sms: sms}
}

func (h *Handler) SendCode(c *gin.Context) {
	if h == nil || h.sms == nil {
		respond.JSONError(c, errs.ErrAvailable)
		return
	}
	lang, ok := i18n.ParseExplicit(strings.TrimSpace(c.GetHeader(headerXLanguage)))
	if !ok {
		respond.JSONError(c, errs.ErrInvalidArgument.WithMsg(i18n.T(reqctx.Lang(c.Request.Context()), i18n.KeySMSLanguageRequired, nil)))
		return
	}
	if rc := reqctx.From(c.Request.Context()); rc != nil {
		rc.Language = lang.String()
	}
	var in smslogic.SendCodeInput
	if err := respond.BindJSON(c, &in); err != nil {
		respond.JSONError(c, err)
		return
	}
	if err := validate.StructLang(lang, in); err != nil {
		respond.JSONError(c, err)
		return
	}
	if in.Purpose == smsentity.PurposeAccountDelete {
		rc := reqctx.From(c.Request.Context())
		if rc == nil || rc.UserID <= 0 {
			respond.JSONError(c, errs.ErrUnauthorized)
			return
		}
	}
	out, err := h.sms.Send(c.Request.Context(), in)
	if err != nil {
		respond.JSONError(c, err)
		return
	}
	respond.JSON(c, out)
}