DoodleBUGS Project: Phase 2 (Backend) (#388)

Improved lot of things, data input, code generation, minor bugs.
Added backend (local runtime) -- not perfectly working

Author: shravanngoswamii

DoodleBUGS/.gitignore

@@ -10,6 +10,7 @@ digest.txt
 root.txt
 src.txt
 public.txt
+runtime.txt
 
 node_modules
 .DS_Store
@@ -18,6 +19,7 @@ dist-ssr
 coverage
 *.local
 ztest
+tmp
 
 /cypress/videos/
 /cypress/screenshots/

DoodleBUGS/README.md

@@ -43,3 +43,35 @@ npm run preview
 ```
 
 For more information, questions, or to get involved, please contact [@shravanngoswamii](https://github.com/shravanngoswamii) (Ping me on [Julia Slack](https://julialang.slack.com/archives/CCYDC34A0)).
+
+> [!TIP]
+> You can generate a standalone Julia script directly from the app: open the navbar → `Connection` → `Generate Standalone Julia Script`.
+> The script opens in the right sidebar's Execution panel under the Files tab, where you can copy or download it.
+
+## Backend (Julia) Quick Start
+
+The DoodleBUGS app can connect to a local Julia backend for running models.
+
+1. Clone this repository and open a terminal at the repo root.
+2. Instantiate backend dependencies (first time only):
+
+```bash
+julia --project=DoodleBUGS/runtime -e "using Pkg; Pkg.instantiate()"
+```
+
+3. Start the backend server (defaults to http://localhost:8081):
+
+```bash
+julia --project=DoodleBUGS/runtime DoodleBUGS/runtime/server.jl
+```
+
+4. In the DoodleBUGS app, open the navbar → `Connection` → set URL to `http://localhost:8081` → `Connect`.
+
+Notes:
+- Keep the backend terminal open while using the app.
+- If the port is in use or blocked by a firewall, change the port in `DoodleBUGS/runtime/server.jl` and reconnect (the port is currently set to 8081 at the end of the file).
+
+#### Troubleshooting
+
+- To verify connectivity, open your browser at `http://localhost:8081/api/health` (replace 8081 if you changed the port). A healthy server returns `{ "status": "ok" }`.
+- If the health check fails, ensure the server is running, the URL/port are correct, and no firewall or VPN is blocking the port. Check the backend terminal output for errors.

DoodleBUGS/public/examples/rats/data.json

@@ -1,227 +1,57 @@
 {
-    "data": {
-        "N": 30,
-        "T": 5,
-        "x": [
-            8.0,
-            15.0,
-            22.0,
-            29.0,
-            36.0
-        ],
-        "xbar": 22,
-        "Y": [
-            [
-                151,
-                199,
-                246,
-                283,
-                320
-            ],
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-                249,
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-                354
-            ],
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-            ],
-            [
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-                265,
-                307,
-                342
-            ]
-        ]
-    },
-    "inits": {}
+  "data": {
+    "N": 30,
+    "T": 5,
+    "x": [8.0, 15.0, 22.0, 29.0, 36.0],
+    "xbar": 22,
+    "Y": [
+      [151, 199, 246, 283, 320],
+      [145, 199, 249, 293, 354],
+      [147, 214, 263, 312, 328],
+      [155, 200, 237, 272, 297],
+      [135, 188, 230, 280, 323],
+      [159, 210, 252, 298, 331],
+      [141, 189, 231, 275, 305],
+      [159, 201, 248, 297, 338],
+      [177, 236, 285, 350, 376],
+      [134, 182, 220, 260, 296],
+      [160, 208, 261, 313, 352],
+      [143, 188, 220, 273, 314],
+      [154, 200, 244, 289, 325],
+      [171, 221, 270, 326, 358],
+      [163, 216, 242, 281, 312],
+      [160, 207, 248, 288, 324],
+      [142, 187, 234, 280, 316],
+      [156, 203, 243, 283, 317],
+      [157, 212, 259, 307, 336],
+      [152, 203, 246, 286, 321],
+      [154, 205, 253, 298, 334],
+      [139, 190, 225, 267, 302],
+      [146, 191, 229, 272, 302],
+      [157, 211, 250, 285, 323],
+      [132, 185, 237, 286, 331],
+      [160, 207, 257, 303, 345],
+      [169, 216, 261, 295, 333],
+      [157, 205, 248, 289, 316],
+      [137, 180, 219, 258, 291],
+      [153, 200, 244, 286, 324]
+    ]
+  },
+  "inits": {
+    "alpha": [
+      250.0, 250.0, 250.0, 250.0, 250.0, 250.0, 250.0, 250.0, 250.0, 250.0,
+      250.0, 250.0, 250.0, 250.0, 250.0, 250.0, 250.0, 250.0, 250.0, 250.0,
+      250.0, 250.0, 250.0, 250.0, 250.0, 250.0, 250.0, 250.0, 250.0, 250.0
+    ],
+    "beta": [
+      6.0, 6.0, 6.0, 6.0, 6.0, 6.0, 6.0, 6.0, 6.0, 6.0,
+      6.0, 6.0, 6.0, 6.0, 6.0, 6.0, 6.0, 6.0, 6.0, 6.0,
+      6.0, 6.0, 6.0, 6.0, 6.0, 6.0, 6.0, 6.0, 6.0, 6.0
+    ],
+    "alpha.c": 150.0,
+    "beta.c": 10.0,
+    "tau.c": 1.0,
+    "alpha.tau": 1.0,
+    "beta.tau": 1.0
+  }
 }