Merge remote-tracking branch 'origin/feat/ifcchat-claude' into v0.8.0

src/ifcchat/README.md

@@ -1,7 +1,7 @@
 IfcOpenShell AI Assistant 
 =========================
 
-A web-based client-side (pyodide + OpenAI API) model interrogation and generation API based on: ifcedit, ifcquery and ifcmcp (ifcopenshell-mcp) packaged in a HTML+JS application.
+A web-based client-side (pyodide + OpenAI, Anthropic, or OpenRouter API) model interrogation and generation API based on: ifcedit, ifcquery and ifcmcp (ifcopenshell-mcp) packaged in a HTML+JS application.
 
 ### Setup instructions
 

src/ifcchat/api_anthropic.js

@@ -0,0 +1,177 @@
+// This file was generated with the assistance of an AI coding tool.
+
+function parseArguments(argumentsText) {
+    if (!argumentsText) return {};
+    try {
+        return JSON.parse(argumentsText);
+    } catch {
+        return {};
+    }
+}
+
+function toAnthropicTools(tools = []) {
+    return tools.map((tool) => ({
+        name: tool.function.name,
+        description: tool.function.description,
+        input_schema: tool.function.parameters,
+    }));
+}
+
+function toAnthropicAssistantContent(message) {
+    const content = [];
+
+    if (message.content) {
+        content.push({ type: "text", text: message.content });
+    }
+
+    for (const toolCall of message.tool_calls ?? []) {
+        content.push({
+            type: "tool_use",
+            id: toolCall.id,
+            name: toolCall.function.name,
+            input: parseArguments(toolCall.function.arguments),
+        });
+    }
+
+    if (content.length === 0) {
+        return "";
+    }
+
+    return content.length === 1 && content[0].type === "text" ? content[0].text : content;
+}
+
+function toAnthropicUserContent(message) {
+    return typeof message.content === "string" ? message.content : JSON.stringify(message.content ?? "");
+}
+
+function toAnthropicToolResult(message) {
+    return {
+        type: "tool_result",
+        tool_use_id: message.tool_call_id,
+        content: typeof message.content === "string" ? message.content : JSON.stringify(message.content ?? ""),
+    };
+}
+
+function splitSystemAndMessages(messages = []) {
+    const system = [];
+    const anthropicMessages = [];
+    let pendingToolResults = [];
+
+    const flushToolResults = () => {
+        if (pendingToolResults.length === 0) return;
+        anthropicMessages.push({ role: "user", content: pendingToolResults });
+        pendingToolResults = [];
+    };
+
+    for (const message of messages) {
+        if (message.role === "system") {
+            if (message.content) {
+                system.push(message.content);
+            }
+            continue;
+        }
+
+        if (message.role === "tool") {
+            pendingToolResults.push(toAnthropicToolResult(message));
+            continue;
+        }
+
+        flushToolResults();
+
+        if (message.role === "user") {
+            anthropicMessages.push({
+                role: "user",
+                content: toAnthropicUserContent(message),
+            });
+            continue;
+        }
+
+        if (message.role === "assistant") {
+            anthropicMessages.push({
+                role: "assistant",
+                content: toAnthropicAssistantContent(message),
+            });
+        }
+    }
+
+    flushToolResults();
+
+    return {
+        system: system.join("\n\n"),
+        messages: anthropicMessages,
+    };
+}
+
+function toChatCompletionResponse(response) {
+    const text = [];
+    const toolCalls = [];
+
+    for (const block of response.content ?? []) {
+        if (block.type === "text") {
+            text.push(block.text);
+            continue;
+        }
+
+        if (block.type === "tool_use") {
+            toolCalls.push({
+                id: block.id,
+                type: "function",
+                function: {
+                    name: block.name,
+                    arguments: JSON.stringify(block.input ?? {}),
+                },
+            });
+        }
+    }
+
+    const message = { role: "assistant" };
+    const content = text.join("\n").trim();
+
+    if (content) {
+        message.content = content;
+    }
+
+    if (toolCalls.length) {
+        message.tool_calls = toolCalls;
+    }
+
+    return {
+        choices: [
+            {
+                message,
+            },
+        ],
+    };
+}
+
+export async function chat({ apiKey, model, messages, tools }) {
+    const request = splitSystemAndMessages(messages);
+    const body = {
+        model,
+        max_tokens: 4096,
+        messages: request.messages,
+        tools: toAnthropicTools(tools),
+    };
+
+    if (request.system) {
+        body.system = request.system;
+    }
+
+    const res = await fetch("https://api.anthropic.com/v1/messages", {
+        method: "POST",
+        headers: {
+            "Content-Type": "application/json",
+            "x-api-key": apiKey,
+            "anthropic-version": "2023-06-01",
+            "anthropic-dangerous-direct-browser-access": "true",
+        },
+        body: JSON.stringify(body),
+    });
+
+    if (!res.ok) {
+        const text = await res.text();
+        throw new Error(`Anthropic error ${res.status}: ${text}`);
+    }
+
+    return toChatCompletionResponse(await res.json());
+}

src/ifcchat/app.js

@@ -1,10 +1,13 @@
 // app.js
 import * as openaiApi from "./api_openai.js";
+import * as anthropicApi from "./api_anthropic.js";
 import * as openrouterApi from "./api_openrouter.js";
 
 const PROVIDERS = {
     openai: {
         api: openaiApi,
+        apiKeyLabel: "OpenAI API key",
+        apiKeyPlaceholder: "sk-...",
         models: [
             { 
                 value: "gpt-5",      
@@ -16,8 +19,29 @@ const PROVIDERS = {
             },
         ],
     },
+    anthropic: {
+        api: anthropicApi,
+        apiKeyLabel: "Anthropic API key",
+        apiKeyPlaceholder: "sk-ant-...",
+        models: [
+            {
+                value: "claude-sonnet-4-6",
+                label: "claude-sonnet-4-6"
+            },
+            {
+                value: "claude-opus-4-6",
+                label: "claude-opus-4-6"
+            },
+            {
+                value: "claude-haiku-4-5-20251001",
+                label: "claude-haiku-4-5"
+            },
+        ],
+    },
     openrouter: {
         api: openrouterApi,
+        apiKeyLabel: "OpenRouter API key",
+        apiKeyPlaceholder: "sk-or-v1-...",
         models: [
             { 
                 value: "openai/gpt-oss-20b",
@@ -54,6 +78,7 @@ const msgsEl = $("msgs");
 const sendBtn = $("send");
 const inputEl = $("input");
 const apiKeyEl = $("apiKey");
+const apiKeyLabelEl = $("apiKeyLabel");
 const modelEl = $("model");
 const providerEl = $("provider");
 const ifcFileEl = $("ifcFile");
@@ -61,8 +86,10 @@ const newBtn = $("newModel");
 const downloadBtn = $("downloadIfc");
 
 function onProviderChange() {
-    const p = PROVIDERS[providerEl.value];
-    modelEl.innerHTML = p.models.map(m => `<option value="${m.value}">${m.label}</option>`).join("");
+    const provider = PROVIDERS[providerEl.value];
+    apiKeyLabelEl.innerHTML = `${provider.apiKeyLabel}<span class="small">stored in browser memory; only sent to provider servers</span>`;
+    apiKeyEl.placeholder = provider.apiKeyPlaceholder;
+    modelEl.innerHTML = provider.models.map(m => `<option value="${m.value}">${m.label}</option>`).join("");
 }
 
 providerEl.addEventListener("change", onProviderChange);
@@ -344,4 +371,4 @@ downloadBtn.onclick = async () => {
         setBusy(true, "Error");
         addMessage("assistant", `Worker init failed: ${e.message}`);
     }
-})();
+})();

src/ifcchat/index.html

@@ -16,6 +16,7 @@
                 <label>Provider</label>
                 <select id="provider" style="width: 100%;">
                     <option value="openai">OpenAI</option>
+                    <option value="anthropic">Anthropic (Claude)</option>
                     <option value="openrouter">OpenRouter</option>
                 </select>
             </div>
@@ -26,14 +27,14 @@
             </div>
 
             <div class="row">
-                <label>API key<span class="small">stored in browser memory</span></label>
+                <label id="apiKeyLabel">API key<span class="small">stored in browser memory; only sent to provider servers</span></label>
                 <input id="apiKey" type="password" placeholder="sk-..." autocomplete="off" style="width: 100%;" />
             </div>
 
             <hr />
 
             <div class="row" style="margin-bottom: 10px;">
-                <label>IFC model context<span class="small">stored in browser memory; only information extracted through MCP commands sent to OpenAI servers</span></label>
+                <label>IFC model context<span class="small">stored in browser memory; only information extracted through MCP commands sent to provider servers</span></label>
 
                 <div class="btn-row">
                     <label class="btn" id="browseBtn" for="ifcFile" role="button" tabindex="0">
@@ -102,4 +103,4 @@
     <script type="module" src="./app.js"></script>
 </body>
 
-</html>
+</html>