reearth · yk-eukarya · Dec 6, 2021 · Dec 2, 2021 · Dec 6, 2021 · Dec 6, 2021
diff --git a/internal/usecase/interactor/emails/password_reset_html.tmpl b/internal/usecase/interactor/emails/password_reset_html.tmpl
@@ -0,0 +1,22 @@
+<!doctype html>
+<html xmlns="http://www.w3.org/1999/xhtml" xmlns:v="urn:schemas-microsoft-com:vml"
+    xmlns:o="urn:schemas-microsoft-com:office:office">
+
+<head>
+</head>
+
+<body>
+
+    <h1>ReEarth</h1>
+    <p>
+        You have submitted a password change request! If it was you, please confirm the password change.
+    To reset your password click on the following link:
+    </p>
+
+    <a href="{{ . }}">{{ . }}</a>
+
+    <p>If you are having any issues with your account, please don't hesitate to contact us by replying to this mail. Thank you!</p>
+
+</body>
+
+</html>
diff --git a/internal/usecase/interactor/emails/password_reset_text.tmpl b/internal/usecase/interactor/emails/password_reset_text.tmpl
@@ -0,0 +1,7 @@
+ReEarth
+You have submitted a password change request! If it was you, please confirm the password change.
+To reset your password click on the following link:
+
+{{ . }}
+
+If you are having any issues with your account, please don't hesitate to contact us by replying to this mail. Thank you!
diff --git a/internal/usecase/interactor/user.go b/internal/usecase/interactor/user.go
@@ -1,15 +1,20 @@
 package interactor
 
 import (
+	"bytes"
 	"context"
+	_ "embed"
 	"errors"
+	htmlTmpl "html/template"
 	"net/mail"
+	textTmpl "text/template"
 
 	"github.com/reearth/reearth-backend/internal/usecase"
 	"github.com/reearth/reearth-backend/internal/usecase/gateway"
 	"github.com/reearth/reearth-backend/internal/usecase/interfaces"
 	"github.com/reearth/reearth-backend/internal/usecase/repo"
 	"github.com/reearth/reearth-backend/pkg/id"
+	"github.com/reearth/reearth-backend/pkg/log"
 	"github.com/reearth/reearth-backend/pkg/project"
 	"github.com/reearth/reearth-backend/pkg/rerror"
 	"github.com/reearth/reearth-backend/pkg/user"
@@ -29,9 +34,32 @@ type User struct {
 	transaction       repo.Transaction
 	file              gateway.File
 	authenticator     gateway.Authenticator
+	mailer            gateway.Mailer
 	signupSecret      string
 }
 
+var (
+	//go:embed emails/password_reset_html.tmpl
+	passwordResetHTMLTMPLStr string
+	//go:embed emails/password_reset_text.tmpl
+	passwordResetTextTMPLStr string
+
+	passwordResetTextTMPL *textTmpl.Template
+	passwordResetHTMLTMPL *htmlTmpl.Template
+)
+
+func init() {
+	var err error
+	passwordResetTextTMPL, err = textTmpl.New("passwordReset").Parse(passwordResetTextTMPLStr)
+	if err != nil {
+		log.Panicf("password reset email template parse error: %s", err)
+	}
+	passwordResetHTMLTMPL, err = htmlTmpl.New("passwordReset").Parse(passwordResetHTMLTMPLStr)
+	if err != nil {
+		log.Panicf("password reset email template parse error: %s", err)
+	}
+}
+
 func NewUser(r *repo.Container, g *gateway.Container, signupSecret string) interfaces.User {
 	return &User{
 		userRepo:          r.User,
@@ -47,6 +75,7 @@ func NewUser(r *repo.Container, g *gateway.Container, signupSecret string) inter
 		file:              g.File,
 		authenticator:     g.Authenticator,
 		signupSecret:      signupSecret,
+		mailer:            g.Mailer,
 	}
 }
 
@@ -253,12 +282,34 @@ func (i *User) StartPasswordReset(ctx context.Context, email string) error {
 		return err
 	}
 
-	u.SetPasswordReset(user.NewPasswordReset())
+	pr := user.NewPasswordReset()
+	u.SetPasswordReset(pr)
 
 	if err := i.userRepo.Save(ctx, u); err != nil {
 		return err
 	}
 
+	var TextOut, HTMLOut bytes.Buffer
+	link := "localhost:3000/?pwd-reset-token=" + pr.Token
+	err = passwordResetTextTMPL.Execute(&TextOut, link)
+	if err != nil {
+		return err
+	}
+	err = passwordResetHTMLTMPL.Execute(&HTMLOut, link)
+	if err != nil {
+		return err
+	}
+
+	err = i.mailer.SendMail([]gateway.Contact{
+		{
+			Email: u.Email(),
+			Name:  u.Name(),
+		},
+	}, "Password reset", TextOut.String(), HTMLOut.String())
+	if err != nil {
+		return err
+	}
+
 	tx.Commit()
 	return nil
 }

diff --git a/pkg/log/log.go b/pkg/log/log.go
@@ -102,3 +102,7 @@ func Errorln(args ...interface{}) {
 func Fatalln(args ...interface{}) {
 	logrus.Fatalln(args...)
 }
+
+func Panicf(format string, args ...interface{}) {
+	logrus.Panicf(format, args...)
+}