Add template parsing and execution to mail service.

services/container.go

@@ -37,9 +37,9 @@ func NewContainer() *Container {
 	c.initCache()
 	c.initDatabase()
 	c.initORM()
-	c.initMail()
 	c.initAuth()
 	c.initTemplateRenderer()
+	c.initMail()
 	return c
 }
 
@@ -135,14 +135,6 @@ func (c *Container) initORM() {
 	}
 }
 
-func (c *Container) initMail() {
-	var err error
-	c.Mail, err = NewMailClient(c.Config)
-	if err != nil {
-		panic(fmt.Sprintf("failed to create mail client: %v", err))
-	}
-}
-
 func (c *Container) initAuth() {
 	c.Auth = NewAuthClient(c.Config, c.ORM)
 }
@@ -150,3 +142,11 @@ func (c *Container) initAuth() {
 func (c *Container) initTemplateRenderer() {
 	c.Templates = NewTemplateRenderer(c.Config)
 }
+
+func (c *Container) initMail() {
+	var err error
+	c.Mail, err = NewMailClient(c.Config, c.Templates)
+	if err != nil {
+		panic(fmt.Sprintf("failed to create mail client: %v", err))
+	}
+}

services/mail.go

@@ -1,6 +1,8 @@
 package services
 
 import (
+	"fmt"
+
 	"goweb/config"
 
 	"github.com/labstack/echo/v4"
@@ -13,12 +15,15 @@ import (
 type MailClient struct {
 	// config stores application configuration
 	config *config.Config
+
+	templates *TemplateRenderer
 }
 
 // NewMailClient creates a new MailClient
-func NewMailClient(cfg *config.Config) (*MailClient, error) {
+func NewMailClient(cfg *config.Config, templates *TemplateRenderer) (*MailClient, error) {
 	return &MailClient{
 		config:    cfg,
+		templates: templates,
 	}, nil
 }
 
@@ -40,6 +45,24 @@ func (c *MailClient) SendTemplate(ctx echo.Context, to, template string, data in
 		ctx.Logger().Debugf("skipping template email sent to: %s")
 	}
 
+	// Parse the template, if needed
+	if err := c.templates.Parse(
+		"mail",
+		template,
+		template,
+		[]string{fmt.Sprintf("email/%s", template)},
+		[]string{},
+	); err != nil {
+		return err
+	}
+
+	// Execute the template
+	// Uncomment the first variable when ready to use
+	_, err := c.templates.Execute("mail", template, template, data)
+	if err != nil {
+		return err
+	}
+
 	// TODO: Finish based on your mail sender of choice
 	return nil
 }

services/templates.go

@@ -47,9 +47,9 @@ func NewTemplateRenderer(cfg *config.Config) *TemplateRenderer {
 func (t *TemplateRenderer) Parse(module, key, name string, files []string, directories []string) error {
 	cacheKey := t.getCacheKey(module, key)
 
-	// Check if the template has not yet been parsed or if the app environment is local, so that templates reflect
-	// changes without having the restart the server
-	if _, err := t.Load(module, key); err != nil {
+	// Check if the template has not yet been parsed or if the app environment is local, so that
+	// templates reflect changes without having the restart the server
+	if _, err := t.Load(module, key); err != nil || t.config.App.Environment == config.EnvLocal {
 		// Initialize the parsed template with the function map
 		parsed := template.New(name + config.TemplateExt).
 			Funcs(t.funcMap)

templates/emails/test.gohtml

@@ -0,0 +1 @@
+Test email template. See services/mail.go to provide your implementation.