From 9ad6a8c8005fab9655128ee3d8767de5845e0903 Mon Sep 17 00:00:00 2001
From: Ardis Lu <ardisglu@gmail.com>
Date: Thu, 15 Jul 2021 23:15:58 -0700
Subject: [PATCH] Add QR worker

---
 README.md         | 10 +++++-
 package-lock.json | 77 ++++++++++++++++++++++++++++++++++++++---------
 package.json      |  3 +-
 qr/index.js       | 17 +++++++++++
 qr/package.json   | 22 ++++++++++++++
 5 files changed, 112 insertions(+), 17 deletions(-)
 create mode 100644 qr/index.js
 create mode 100644 qr/package.json

diff --git a/README.md b/README.md
index fc71ea3..a8b6cb3 100644
--- a/README.md
+++ b/README.md
@@ -113,4 +113,12 @@ hunter1
 then the final request URL should be
 ```
 https://x.y.workers.dev?hunter1
-```
\ No newline at end of file
+```
+
+## qr
+
+Generates a QR code for the value passed to the endpoint. Note: set the `type` property in `wrangler.toml` to `webpack` to use `require`.
+
+### Usage
+
+Same as `proxy`.
diff --git a/package-lock.json b/package-lock.json
index 4c34089..ad8d84b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8,20 +8,23 @@
       "version": "0.1.0",
       "license": "ISC",
       "workspaces": [
-        "reverse-proxy",
+        "proxy",
         "instagram",
-        "inline"
+        "cors",
+        "pwned",
+        "qr"
       ],
       "devDependencies": {
         "@cloudflare/wrangler": "^1.16.1"
       }
     },
+    "cors": {
+      "version": "0.1.0",
+      "license": "ISC"
+    },
     "instagram": {
       "version": "0.1.0",
-      "license": "ISC",
-      "devDependencies": {
-        "@cloudflare/wrangler": "^1.16.1"
-      }
+      "license": "ISC"
     },
     "node_modules/@cloudflare/wrangler": {
       "version": "1.16.1",
@@ -211,16 +214,49 @@
       "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==",
       "dev": true
     },
+    "node_modules/cors": {
+      "resolved": "cors",
+      "link": true
+    },
     "node_modules/instagram": {
       "resolved": "instagram",
       "link": true
     },
-    "node_modules/reverse-proxy": {
-      "resolved": "reverse-proxy",
+    "node_modules/proxy": {
+      "resolved": "proxy",
       "link": true
     },
+    "node_modules/pwned": {
+      "resolved": "pwned",
+      "link": true
+    },
+    "node_modules/qr": {
+      "resolved": "qr",
+      "link": true
+    },
+    "node_modules/qr-image": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/qr-image/-/qr-image-3.2.0.tgz",
+      "integrity": "sha1-n6gpW+rlDEoUnPn5CaHbRkqGcug="
+    },
+    "proxy": {
+      "version": "0.1.0",
+      "license": "ISC"
+    },
+    "pwned": {
+      "version": "0.1.0",
+      "license": "ISC"
+    },
+    "qr": {
+      "version": "0.1.0",
+      "license": "ISC",
+      "dependencies": {
+        "qr-image": "^3.2.0"
+      }
+    },
     "reverse-proxy": {
       "version": "0.1.0",
+      "extraneous": true,
       "license": "ISC",
       "devDependencies": {
         "@cloudflare/wrangler": "^1.16.1"
@@ -413,17 +449,28 @@
         }
       }
     },
+    "cors": {
+      "version": "file:cors"
+    },
     "instagram": {
-      "version": "file:instagram",
+      "version": "file:instagram"
+    },
+    "proxy": {
+      "version": "file:proxy"
+    },
+    "pwned": {
+      "version": "file:pwned"
+    },
+    "qr": {
+      "version": "file:qr",
       "requires": {
-        "@cloudflare/wrangler": "^1.16.1"
+        "qr-image": "^3.2.0"
       }
     },
-    "reverse-proxy": {
-      "version": "file:reverse-proxy",
-      "requires": {
-        "@cloudflare/wrangler": "^1.16.1"
-      }
+    "qr-image": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/qr-image/-/qr-image-3.2.0.tgz",
+      "integrity": "sha1-n6gpW+rlDEoUnPn5CaHbRkqGcug="
     }
   }
 }
diff --git a/package.json b/package.json
index 1c13088..8956dc3 100644
--- a/package.json
+++ b/package.json
@@ -22,6 +22,7 @@
     "proxy",
     "instagram",
     "cors",
-    "pwned"
+    "pwned",
+    "qr"
   ]
 }
diff --git a/qr/index.js b/qr/index.js
new file mode 100644
index 0000000..7122a8c
--- /dev/null
+++ b/qr/index.js
@@ -0,0 +1,17 @@
+const qr = require('qr-image');
+
+async function handleRequest(request) {
+  const url = new URL(request.url);
+  const queryString = decodeURIComponent(url.search.substring(1));
+  const qrImage = qr.imageSync(queryString || 'https://example.com', { type: 'svg' });
+
+  return new Response(qrImage, {
+    headers: {
+      'Content-Type': 'image/svg+xml'
+    }
+  })
+}
+
+addEventListener('fetch', event => {
+  event.respondWith(handleRequest(event.request));
+})
diff --git a/qr/package.json b/qr/package.json
new file mode 100644
index 0000000..c8b0878
--- /dev/null
+++ b/qr/package.json
@@ -0,0 +1,22 @@
+{
+  "name": "qr",
+  "version": "0.1.0",
+  "description": "QR code generator on a Cloudflare Worker.",
+  "private": true,
+  "main": "index.js",
+  "scripts": {
+    "login": "wrangler login",
+    "preview": "wrangler preview",
+    "build": "wrangler build",
+    "publish": "wrangler publish"
+  },
+  "author": "Ardis Lu",
+  "license": "ISC",
+  "dependencies": {
+    "qr-image": "^3.2.0"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/ardislu/cloudflare-workers.git"
+  }
+}
-- 
2.47.3