initial commit

2025-08-11 22:24:24 -05:00
commit e10c181a89
23 changed files with 5300 additions and 0 deletions
--- a/server/index.ts
+++ b/server/index.ts
@@ -0,0 +1,122 @@
+// Very small mock server for local testing. In production replace with your AI provider call.
+import express from "express";
+import bodyParser from "body-parser";
+import cors from "cors";
+import { Ollama } from "ollama";
+import { XMLParser } from "fast-xml-parser";
+
+const app = express();
+app.use(cors());
+app.use(bodyParser.json());
+
+const ollama = new Ollama({
+  host: "http://192.168.1.85:11434",
+});
+
+type ChatMessage = {
+  content: string;
+  role: "user" | "assistant";
+};
+const xmlParser = new XMLParser();
+const systemPrompt: string = `You are an educated chef that likes to make nutritional meals.
+    You have an oven, stove top, pots, pans, microwave, grill, nice knives and some other kitchen tools at your disposal.
+    You do all of your grocery shopping at Trader Joe's, but on rare occasions can go to a different store for a few ingredients.
+    You like to be able to cook from start to finish in 45 minutes, but up to 60 is acceptable.
+    You largely prefer to use chicken as your protein but beef and turkey are acceptable on occasion.
+    You are a strong believer that the microwave should not be used to cook vegetables.
+    When returning meals, you must put each meal into an XML structure such as
+    <meal><name></name><ingredients><name></name><quantity></quantity></ingredients><steps></steps></meal>
+    The steps should be detailed enough for a beginner chef to follow along as if they have never cooked this meal before.
+    Each meal needs to be able to feed all people involved rather than each person getting a meal. If you are asked for 3 meals you should only return 3 meals.
+    When combining all ingredients into a shopping list, you must again use an XML
+    Your entire response needs to be XML <xml><meals></meals><shoppingList></shoppingList></xml>, nothing more, nothing less. If you consider returning something other than XML, you need to stop and start over.
+
+    `;
+app.post("/api/mealplan", async (req, res) => {
+  const prompt: string = req.body.prompt || "";
+  const existingMessages: ChatMessage[] = req.body.existingMessages || [];
+  let fullPrompt = prompt;
+
+  if (!prompt) {
+    return res.sendStatus(400);
+  }
+
+  if (existingMessages.length === 0) {
+    fullPrompt = systemPrompt + fullPrompt;
+  }
+
+  const callOllama = () => {
+    return ollama.chat({
+      model: "llama3.2:3b",
+      think: false, //"low",
+      stream: false,
+      messages: [
+        {
+          content: fullPrompt,
+          role: "user",
+        },
+      ],
+    });
+  };
+
+  const ollamaResponse = await callOllama();
+
+  let mealsAndList: any = null;
+  try {
+    mealsAndList = xmlParser.parse(ollamaResponse.message.content ?? "");
+  } catch (e) {
+    console.log("Failed on first call", e);
+  }
+
+  if (!mealsAndList) {
+    const ollamaResponse2 = await callOllama();
+    try {
+      mealsAndList = xmlParser.parse(ollamaResponse2.message.content ?? "");
+    } catch (e) {
+      console.log("Failed on second call", e);
+      return res.sendStatus(500);
+    }
+  }
+
+  if (mealsAndList.xml) {
+    mealsAndList = mealsAndList.xml;
+  }
+
+  let mealPlan: any[] = [];
+  if (
+    mealsAndList.meals &&
+    Array.isArray(mealsAndList.meals) &&
+    mealsAndList.meals.length > 0
+  ) {
+    mealPlan = mealsAndList.meals;
+  } else if (
+    mealsAndList.meals &&
+    mealsAndList.meals.meal &&
+    Array.isArray(mealsAndList.meals.meal) &&
+    mealsAndList.meals.meal.length > 0
+  ) {
+    console.log(mealsAndList.meals.meal);
+    mealPlan = mealsAndList.meals.meal;
+  } else if (mealsAndList.meals) {
+    mealPlan = mealsAndList.meals;
+  }
+
+  let shoppingList: any[] = [];
+  if (mealsAndList.shoppingList) {
+    shoppingList = mealsAndList.shoppingList;
+  }
+
+  // simple deterministic mock response: you should replace this with a real AI call.
+  const mock = {
+    mealPlan,
+    groceryList: shoppingList,
+  };
+  // simulate some delay
+  await new Promise((r) => setTimeout(r, 600));
+  res.json(mock);
+});
+
+const port = 3000;
+app.listen(port, () =>
+  console.log(`Server listening on http://localhost:${port}`),
+);