add subject-prefix, fixes #7

README.md

@@ -83,6 +83,7 @@ They are JSON files placed in the `/targets` directory.
 - `origin` *optional* | A HTTP origin that is used for CORS and to restrict access. Default is * if not set.
 - `recipients` *required* | An array of email addresses which should receive the email.
 - `from` *optional* | The "from" field of an email. This is used as fallback if no "from" is provided in the request.
+- `subjectPrefix` *optional* | A target-wide prefix for the email subject.
 - `key` *optional* | A string used as API key if you want to restrict access to this target.
 - `redirect` *optional*:
   - `success` *optional*: A valid URL to redirect the user if the mail was sent successful.
@@ -103,6 +104,7 @@ Whether as formular data or json, the fields are the same.
 - `from` *optional* | The email address of the sender. If this filed is not set, the "from" field of your target will be used.
 - `firstName` *optional* | A classic first name filed which will be attached to the "from" field of the email.
 - `lastName` *optional* | A classic last name filed which will be attached to the "from" field of the email.
+- `subjectPrefix` *optional* | A Prefix for the email subject.
 - `subject` *required* | The email subject.
 - `body` *required* | The email body (supports HTML).
   
@@ -131,6 +133,7 @@ If you use an API request, you have to fill it manually.
     <input type="email" name="from" placeholder="Sender's email address"/>
     <input type="text" name="firstName" placeholder="First name" />
     <input type="text" name="lastName" placeholder="Last name" />
+    <input type="hidden" name="subjectPrefix" value="[App-Question] " />
     <input type="text" name="subject" placeholder="Subject" />
     <div class="g-recaptcha" data-sitekey="your_site_key"></div>
     <textarea name="body" placeholder="Your message"></textarea>

src/@types/target.ts

@@ -3,6 +3,7 @@ export interface Target {
     origin: string;
     recipients: string[];
     from?: string;
+    subjectPrefix?: string;
     redirect?: Redirects;
     key?: string;
     rateLimit?: TargetRateLimit;

src/models/post.ts

@@ -20,6 +20,14 @@ export const postBody = {
             maximum: 100
         }
     },
+    subjectPrefix: {
+        type: "string",
+        presence: false,
+        length: {
+            minimum: 1,
+            maximum: 255
+        }
+    },
     subject: {
         type: "string",
         presence: { allowEmpty: false },

src/models/target.ts

@@ -19,6 +19,10 @@ export const targetModel = {
         type: "string",
         presence: false
     },
+    subjectPrefix: {
+        type: "string",
+        presence: false
+    },
     redirect: {
         type: "object",
         presence: false

src/router.ts

@@ -90,12 +90,13 @@ router.post("/:target", async (req: Request, res: Response) => {
             const fieldFrom = fields["from"] instanceof Array ? fields["from"][0] : fields["from"]
             const fieldFirstName = fields["firstName"] instanceof Array ? fields["firstName"][0] : fields["firstName"]
             const fieldLastName = fields["lastName"] instanceof Array ? fields["lastName"][0] : fields["lastName"]
-            const fieldSubject = fields["subject"] instanceof Array ? fields["subject"][0] : fields["subject"]
+            const fieldSubjectPrefix = fields["subjectPrefix"] instanceof Array ? fields["subjectPrefix"][0] : fields["subjectPrefix"] ?? ""
+            const subject = (target.subjectPrefix ?? "") + fieldSubjectPrefix + (fields["subject"] instanceof Array ? fields["subject"][0] : fields["subject"])
             const fieldBody = fields["body"] instanceof Array ? fields["body"][0] : fields["body"]
 
             // send email
             let from = EmailService.formatFromField(fieldFrom ?? target.from, fieldFirstName, fieldLastName);
-            let sent = await EmailService.sendMail(req.params.target, from, fieldSubject, fieldBody, files);
+            let sent = await EmailService.sendMail(req.params.target, from, subject, fieldBody, files);
 
             if(sent instanceof Error || !sent) {
                 if(target.redirect?.error) return res.redirect(target.redirect.error);