v0.8.0 wasm client added, cli client and makefile updated

web/chess-client-wasm/terminal.js

@@ -0,0 +1,110 @@
+// FILE: terminal.js
+const term = new Terminal({
+    cursorBlink: true,
+    convertEol: true,
+    fontFamily: 'Menlo, Monaco, "Courier New", monospace',
+    fontSize: 14,
+    theme: {
+        background: '#1a1b26',
+        foreground: '#a9b1d6',
+        cursor: '#a9b1d6',
+        selection: 'rgba(169, 177, 214, 0.3)'
+    },
+    cols: 120,
+    rows: 40
+});
+
+term.open(document.getElementById('terminal'));
+term.focus();
+
+let inputBuffer = '';
+let inputResolver = null;
+
+term.onData(data => {
+    if (inputResolver) {
+        if (data === '\r') {
+            term.write('\r\n');
+            const result = inputBuffer;
+            inputBuffer = '';
+            const resolver = inputResolver;
+            inputResolver = null;
+            resolver(result);
+        } else if (data === '\x7f' || data === '\x08') {
+            if (inputBuffer.length > 0) {
+                inputBuffer = inputBuffer.slice(0, -1);
+                term.write('\b \b');
+            }
+        } else if (data === '\x03') {
+            term.write('^C\r\n');
+            inputBuffer = '';
+            if (inputResolver) {
+                inputResolver('');
+                inputResolver = null;
+            }
+        } else if (data >= ' ' && data <= '~') {
+            inputBuffer += data;
+            term.write(data);
+        }
+    }
+});
+
+const encoder = new TextEncoder();
+const decoder = new TextDecoder();
+
+// FIXED: Override GLOBAL fs, not go.fs
+if (!globalThis.fs) {
+    globalThis.fs = {};
+}
+
+// Store original methods if they exist
+const originalWrite = globalThis.fs.write;
+const originalRead = globalThis.fs.read;
+
+globalThis.fs.write = function(fd, buf, offset, length, position, callback) {
+    if (fd === 1 || fd === 2) {  // stdout/stderr
+        const text = decoder.decode(buf.slice(offset, offset + length));
+        term.write(text);
+        callback(null, length);
+    } else if (originalWrite) {
+        originalWrite.call(this, fd, buf, offset, length, position, callback);
+    } else {
+        callback(new Error('Invalid fd'));
+    }
+};
+
+globalThis.fs.read = function(fd, buf, offset, length, position, callback) {
+    if (fd === 0) {  // stdin
+        const promise = new Promise(resolve => {
+            inputResolver = resolve;
+        });
+
+        promise.then(line => {
+            const input = encoder.encode(line + '\n');
+            const n = Math.min(length, input.length);
+            buf.set(input.slice(0, n), offset);
+            callback(null, n);
+        });
+    } else if (originalRead) {
+        originalRead.call(this, fd, buf, offset, length, position, callback);
+    } else {
+        callback(new Error('Invalid fd'));
+    }
+};
+
+// Create Go runtime AFTER fs override
+const go = new Go();
+
+WebAssembly.instantiateStreaming(fetch('chess-client.wasm'), go.importObject)
+    .then(result => {
+        go.run(result.instance);
+    })
+    .catch(err => {
+        term.writeln('\r\n\x1b[31mError loading WASM: ' + err + '\x1b[0m');
+        console.error('WASM load error:', err);
+    });
+
+window.addEventListener('resize', () => {
+    const cols = Math.floor(window.innerWidth / 8);
+    const rows = Math.floor(window.innerHeight / 17);
+    term.resize(cols, rows);
+});