prompt to send debug log via mail

1 files changed, 28 insertions, 0 deletions

diff --git a/html/wasm.html b/html/wasm.html
index a839ef6b..197836ff 100644
--- a/html/wasm.html
+++ b/html/wasm.html
@@ -56,6 +56,34 @@ if (!WebAssembly.instantiateStreaming) { // polyfill
 	};
 }
 
+// Hook the console log to send debug information
+// See: https://stackoverflow.com/questions/19846078/how-to-read-from-chromes-console-in-javascript#19846113
+console.oldlog = console.log.bind(console);
+console.logs = [];
+console.log = function(){
+	console.logs.push(Array.from(arguments));
+	console.oldlog.apply(console, arguments);
+}
+
+function mailLogs() {
+	let mailtoLink = new URL("mailto:muhqs-game-logs@muhq.space");
+	mailtoLink.searchParams.append("subject", encodeURIComponent("muhqs-game crash report"));
+	mailtoLink.searchParams.append("body", encodeURIComponent(console.logs));
+	console.log(mailtoLink);
+
+	if (window.confirm('Send a bug report and help to improve muhqs-game.')) {
+		window.open(mailtoLink, '_system');
+	};
+}
+
+console.oldwarn = console.warn.bind(console);
+console.warn = function() {
+	if (arguments[0] === "exit code:" && arguments[1] != 0) {
+		mailLogs();
+	}
+	console.oldwarn.apply(console, arguments);
+}
+
 const go = new Go();
 let mod, inst;
 let url = new URLSearchParams(window.location.search).get("wasm");