feat/unsafe html (#11)

* add unsafe html render and plugins

* small env fix

* update UNSAFE_HTML env

Co-authored-by: Maas Lalani <maas@lalani.dev>

---------

Co-authored-by: Maas Lalani <maas@lalani.dev>

email.go

@@ -9,6 +9,8 @@ import (
 	tea "github.com/charmbracelet/bubbletea"
 	"github.com/resendlabs/resend-go"
 	"github.com/yuin/goldmark"
+	"github.com/yuin/goldmark/extension"
+	renderer "github.com/yuin/goldmark/renderer/html"
 )
 
 const TO_SEPARATOR = ","
@@ -41,7 +43,21 @@ func sendEmail(to []string, from, subject, body string, paths []string) error {
 
 	html := bytes.NewBufferString("")
 	// If the conversion fails, we'll simply send the plain-text body.
-	_ = goldmark.Convert([]byte(body), html)
+	if unsafe {
+		markdown := goldmark.New(
+			goldmark.WithRendererOptions(
+				renderer.WithUnsafe(),
+			),
+			goldmark.WithExtensions(
+				extension.Strikethrough,
+				extension.Table,
+				extension.Linkify,
+			),
+		)
+		_ = markdown.Convert([]byte(body), html)
+	} else {
+		_ = goldmark.Convert([]byte(body), html)
+	}
 
 	request := &resend.SendEmailRequest{
 		From:        from,

main.go

@@ -15,6 +15,7 @@ import (
 )
 
 const RESEND_API_KEY = "RESEND_API_KEY"
+const UNSAFE_HTML = "POP_UNSAFE_HTML"
 const POP_FROM = "POP_FROM"
 const POP_SIGNATURE = "POP_SIGNATURE"
 
@@ -25,6 +26,7 @@ var (
 	body        string
 	attachments []string
 	preview     bool
+	unsafe      bool
 	signature   string
 )
 
@@ -151,6 +153,8 @@ func init() {
 	rootCmd.Flags().StringVarP(&from, "from", "f", envFrom, "Email's sender "+commentStyle.Render("($"+POP_FROM+")"))
 	rootCmd.Flags().StringVarP(&subject, "subject", "s", "", "Email's subject")
 	rootCmd.Flags().BoolVarP(&preview, "preview", "p", false, "Whether to preview the email before sending")
+	envUnsafe := os.Getenv(UNSAFE_HTML) == "true"
+	rootCmd.Flags().BoolVarP(&unsafe, "unsafe", "u", envUnsafe, "Whether to allow unsafe HTML in the email body, also enable some extra markdown features (Experimental)")
 	envSignature := os.Getenv("POP_SIGNATURE")
 	rootCmd.Flags().StringVarP(&signature, "signature", "x", envSignature, "Signature to display at the end of the email. "+commentStyle.Render("($"+POP_SIGNATURE+")"))