Add dcoumentation for API (#18)

apps/docs/api-reference/introduction.mdx

@@ -0,0 +1,24 @@
+---
+title: Introduction
+description: "Fundamental concepts of Usend's API."
+---
+
+## Base URL
+
+Unsend's API is built on REST principles and is served over HTTPS. To ensure data privacy, unencrypted HTTP is not supported.
+
+The Base URL for all API endpoints is:
+
+```sh Terminal
+https://app.unsend.dev/api/
+```
+
+## Authentication
+
+Authentication to Usend's API is performed via the Authorization header with a Bearer token. To authenticate, you need to include the Authorization header with the word Bearer followed by your token in your API requests like so:
+
+```sh Terminal
+Authorization: Bearer us_12345
+```
+
+You can create a new token/API key under your Unsend [Developer Settings](https://app.unsend.dev/api-keys).

apps/docs/api-reference/openapi.json

@@ -106,6 +106,18 @@
     },
     "/v1/emails/{emailId}": {
       "get": {
+        "parameters": [
+          {
+            "schema": {
+              "type": "string",
+              "minLength": 3,
+              "example": "1212121"
+            },
+            "required": true,
+            "name": "emailId",
+            "in": "path"
+          }
+        ],
         "responses": {
           "200": {
             "description": "Retrieve the user",

apps/docs/get-started/nodejs.mdx

@@ -0,0 +1,35 @@
+---
+title: NodeJS
+description: "Send your mail using unsend in NodeJS"
+---
+
+## Prerequisites
+
+- [Unsend API key](https://app.unsend.dev/api-keys)
+- [Verified domain](https://app.unsend.dev/domains)
+
+## Code
+
+```js server.ts
+const options = {
+  method: "POST",
+  headers: {
+    Authorization: "Bearer us_12345",
+    "Content-Type": "application/json",
+  },
+  body: {
+    to: "jsmith@example.com",
+    from: "jsmith@example.com",
+    subject: "<string>",
+    replyTo: "<string>",
+    text: "<string>",
+    html: "<string>",
+    attachments: [{ filename: "<string>", content: "<string>" }],
+  },
+};
+
+fetch("https://app.unsend.dev/api/v1/emails", options)
+  .then((response) => response.json())
+  .then((response) => console.log(response))
+  .catch((err) => console.error(err));
+```

apps/docs/introduction.mdx

@@ -30,4 +30,11 @@ Quicklinks to set up your account and get started
   >
     Learn how to use our API to send emails programmatically.
   </Card>
+  <Card
+    title="NodeJS"
+    icon="node-js"
+    href="/get-started/nodejs"
+  >
+    Learn how to use our API to send emails programmatically.
+  </Card>
 </CardGroup>

apps/docs/mint.json

@@ -47,11 +47,12 @@
     {
       "group": "Get Started",
       "pages": [
-        "introduction"
+        "introduction",
+        "get-started/nodejs"
       ]
     },
     {
-      "group": "API Documentation",
+      "group": "API Reference",
       "pages": [
         "api-reference/introduction"
       ]
@@ -76,7 +77,7 @@
       "method": "bearer"
     },
     "playground": {
-      "mode": "simple"
+      "mode": "show"
     }
   },
   "footerSocials": {