Build and consume Log entries

diff --git a/vopamoi.ts b/vopamoi.ts
index 505781d70f5180513e5fa0f85616daee5bc0f549..6cfdbf2d2f645a4ac24afd3554ea7455ce179ba3 100644 (file)
--- a/vopamoi.ts
+++ b/vopamoi.ts
@@ -1,3 +1,18 @@
+// Typescript doesn't know about MAX_SAFE_INTEGER??  This was supposed to be
+// fixed in typescript 2.0.1 in 2016, but is not working for me in typescript
+// 4.2.4 in 2022.  :( https://github.com/microsoft/TypeScript/issues/9937
+//const MAX_SAFE_INTEGER = Number.MAX_SAFE_INTEGER;
+const MAX_SAFE_INTEGER = 9007199254740991;
+
+// A sane split that splits N *times*, leaving the last chunk unsplit.
+function splitN(str: string, delimiter: string, limit: number = MAX_SAFE_INTEGER): string[] {
+  if (limit < 1) {
+    return [str];
+  }
+  const at = str.indexOf(delimiter);
+  return at === -1 ? [str] : [str.substring(0, at)].concat(splitN(str.substring(at + delimiter.length), delimiter, limit - 1));
+}
+
 const Model = {
   createTask: function (description: string) {
     const task = document.createElement("div");
@@ -24,7 +39,14 @@ const Model = {
 
 const Log = {
   addTask: function (description: string) {
-    Model.addTask(description);
+    this.applyLogEntry(`${Date.now()} Create ${description}`);
+  },
+
+  applyLogEntry: function (entry: string) {
+    const [timestamp, command, data] = splitN(entry, " ", 2);
+    if (command == "Create") {
+      Model.addTask(data);
+    }
   },
 };