Indicate if user gave up first inside stamp

Modify the stamp so that if the user gave up before
solving the lab, the stamp is subtly marked to indicate that.

Signed-off-by: David A. Wheeler <[email protected]>

docs/labs/checker.js

@@ -12,6 +12,9 @@ let info = {}; // General info
 let hints = []; // Array of hint objects
 let page_definitions = {}; // Definitions used when preprocessing regexes
 
+let user_solved = false; // True if user has *ever* solved it on this load
+let user_gave_up = false; // True if user ever gave up before user solved it
+
 // This array contains the default pattern preprocessing commands, in order.
 // We process every pattern through these (in order) to create a final regex
 // to be used to match a pattern.
@@ -292,7 +295,12 @@ function makeStamp() {
     // when they're in a "secure state". We don't need the hash to be
     // cryptographic, since the data is clearly in view. Use a simple one.
     let hash = cyrb64Hash(resultBeginning);
-    return `Completed ${resultBeginning} ${hash}`;
+    let gave_up_indicator = '';
+    if (user_gave_up) { // If user gave up first, subtly indicate this.
+        // The user could reload later this and cause this marking to be omitted.
+        gave_up_indicator = ' (GA)';
+    }
+    return `Completed ${resultBeginning} ${hash}${gave_up_indicator}`;
 }
 
 /**
@@ -317,6 +325,7 @@ function runCheck() {
 
     if (isCorrect && (oldGrade !== newGrade)) {
         // Hooray! User has a newly-correct answer!
+        user_solved = true;
 
         // Set `correctStamp` id (if present) with timestamp and UUID
         // This makes it easy to detect someone simply copying a final result.
@@ -379,6 +388,9 @@ function showHint(e) {
 function showAnswer(e) {
     let formIndexes = findIndexes(e.target.form); // Indexes in this form
     let goodAnswer = formIndexes.map(i => expected[i]).join('\n\n');
+    if (!user_solved) {
+        user_gave_up = true;
+    }
     alert(`We were expecting an answer like this:\n${goodAnswer}`);
 }