feat: add example scripts for argparse, bytes, dataset, html, markdown, uuid, wdantic, and web chat modules

Add comprehensive demo scripts showcasing the usage of multiple Wren modules including argument parsing, byte manipulation, in-memory dataset operations, HTML encoding/slugification, markdown-to-HTML conversion, UUID generation/validation, schema validation with wdantic, and a full web chat application with REST endpoints.
2026-01-24 22:40:22 +00:00
parent 0a65272f80
commit 5a4054ec66
105 changed files with 23275 additions and 94 deletions
@@ -0,0 +1,122 @@
+// retoor <retoor@molodetz.nl>
+
+import "web" for Application, Response, View
+import "wdantic" for Schema, Field
+import "dataset" for Dataset
+import "uuid" for Uuid
+import "json" for Json
+
+var db = Dataset.memory()
+var messages = db["messages"]
+
+var messageSchema = Schema.new({
+  "username": Field.string({"minLength": 1, "maxLength": 50}),
+  "content": Field.string({"minLength": 1, "maxLength": 500})
+})
+
+class MessagesView is View {
+  get(request) {
+    var allMessages = messages.all()
+    return Response.json(allMessages)
+  }
+
+  post(request) {
+    var data = request.json
+    var result = messageSchema.validate(data)
+    if (!result.isValid) {
+      var r = Response.json({"error": "Validation failed", "details": result.errors.map { |e| e.toString }.toList})
+      r.status = 400
+      return r
+    }
+    var msg = messages.insert({
+      "username": data["username"],
+      "content": data["content"]
+    })
+    return Response.json(msg)
+  }
+}
+
+class MessageView is View {
+  get(request) {
+    var id = request.params["id"]
+    var msg = messages.findOne({"uid": id})
+    if (msg == null) {
+      var r = Response.json({"error": "Message not found"})
+      r.status = 404
+      return r
+    }
+    return Response.json(msg)
+  }
+
+  delete(request) {
+    var id = request.params["id"]
+    var deleted = messages.delete(id)
+    if (!deleted) {
+      var r = Response.json({"error": "Message not found"})
+      r.status = 404
+      return r
+    }
+    return Response.json({"status": "deleted"})
+  }
+}
+
+var indexHtml = "<!DOCTYPE html>
+<html>
+<head>
+  <title>Chat Demo</title>
+  <style>
+    body { font-family: sans-serif; max-width: 800px; margin: 0 auto; padding: 20px; }
+    #messages { border: 1px solid #ccc; padding: 10px; height: 300px; overflow-y: auto; margin-bottom: 10px; }
+    .message { margin: 5px 0; padding: 5px; background: #f5f5f5; }
+    .message .username { font-weight: bold; }
+    form { display: flex; gap: 10px; }
+    input, button { padding: 8px; }
+    input[name=content] { flex: 1; }
+  </style>
+</head>
+<body>
+  <h1>Chat Demo</h1>
+  <div id=\"messages\"></div>
+  <form id=\"form\">
+    <input name=\"username\" placeholder=\"Username\" required>
+    <input name=\"content\" placeholder=\"Message\" required>
+    <button type=\"submit\">Send</button>
+  </form>
+  <script>
+    async function loadMessages() {
+      const res = await fetch('/api/messages');
+      const msgs = await res.json();
+      const div = document.getElementById('messages');
+      div.innerHTML = msgs.map(m =>
+        '<div class=\"message\"><span class=\"username\">' + m.username + ':</span> ' + m.content + '</div>'
+      ).join('');
+      div.scrollTop = div.scrollHeight;
+    }
+    document.getElementById('form').onsubmit = async (e) => {
+      e.preventDefault();
+      const form = e.target;
+      await fetch('/api/messages', {
+        method: 'POST',
+        headers: {'Content-Type': 'application/json'},
+        body: JSON.stringify({
+          username: form.username.value,
+          content: form.content.value
+        })
+      });
+      form.content.value = '';
+      loadMessages();
+    };
+    loadMessages();
+    setInterval(loadMessages, 3000);
+  </script>
+</body>
+</html>"
+
+var app = Application.new()
+
+app.get("/", Fn.new { |req| Response.html(indexHtml) })
+app.addView("/api/messages", MessagesView)
+app.addView("/api/messages/:id", MessageView)
+
+System.print("Chat demo running on http://localhost:8080")
+app.run("0.0.0.0", 8080)