package senderservicelogic

import (
	"app-cloudep-notification-service/internal/domain"
	"app-cloudep-notification-service/internal/domain/usecase"
	"context"

	ers "code.30cm.net/digimon/library-go/errs"

	"app-cloudep-notification-service/gen_result/pb/notification"
	"app-cloudep-notification-service/internal/svc"

	"github.com/zeromicro/go-zero/core/logx"
)

type SendMailLogic struct {
	ctx    context.Context
	svcCtx *svc.ServiceContext
	logx.Logger
}

func NewSendMailLogic(ctx context.Context, svcCtx *svc.ServiceContext) *SendMailLogic {
	return &SendMailLogic{
		ctx:    ctx,
		svcCtx: svcCtx,
		Logger: logx.WithContext(ctx),
	}
}

type sendMailReq struct {
	// TO 收件者
	To string `validate:"required,email"`
	// Subject 信件主旨
	Subject string `validate:"required,max=128"`
	// Body 內容
	Body string `validate:"required"`
	// From 寄件者
	From string `validate:"required"`
}

// SendMail 寄信
func (l *SendMailLogic) SendMail(in *notification.SendMailReq) (*notification.OKResp, error) {
	if err := l.svcCtx.Validate.ValidateAll(&sendMailReq{
		To:      in.GetTo(),
		Subject: in.GetSubject(),
		Body:    in.GetBody(),
		From:    in.GetFrom(),
	}); err != nil {
		return nil, ers.InvalidFormat("invalid format")
	}

	// TODO 以後可以做換線
	err := l.svcCtx.MailSender.SendMail(l.ctx, usecase.MailReq{
		To:      in.GetTo(),
		Subject: in.GetSubject(),
		From:    in.GetFrom(),
		Body:    in.GetBody(),
	})
	if err != nil {
		return nil, domain.SendMailErrorL(
			logx.WithContext(l.ctx),
			[]logx.LogField{
				logx.Field("func", "MailSender.SendMail"),
				logx.Field("in", in),
				logx.Field("err", err),
			},
			"MailSender.SendMail failed to send mail",
		)
	}

	return &notification.OKResp{}, nil
}