Basic rendering of open puzzles

src/handlers.go

@@ -23,32 +23,18 @@ func respond(w http.ResponseWriter, req *http.Request, status Status, short stri
 	}
 }
 
-// anchoredSearch looks for needle in r,
+// hasLine returns true if line appears in r.
-// skipping the first skip space-delimited words
+// The entire line must match.
-func anchoredSearch(r io.Reader, needle string, skip int) bool {
+func hasLine(r io.Reader, line string) bool {
 	scanner := bufio.NewScanner(r)
 	for scanner.Scan() {
-		line := scanner.Text()
+		if scanner.Text() == line {
-		parts := strings.SplitN(line, " ", skip+1)
-		if (len(parts) > skip) && (parts[skip] == needle) {
 			return true
 		}
 	}
-
 	return false
 }
 
-// anchoredSearchFile performs an anchoredSearch on a given filename
-func anchoredSearchFile(filename string, needle string, skip int) bool {
-	r, err := os.Open(filename)
-	if err != nil {
-		return false
-	}
-	defer r.Close()
-
-	return anchoredSearch(r, needle, skip)
-}
-
 func (ctx Instance) registerHandler(w http.ResponseWriter, req *http.Request) {
 	teamname := req.FormValue("name")
 	teamid := req.FormValue("id")
@@ -69,7 +55,17 @@ func (ctx Instance) registerHandler(w http.ResponseWriter, req *http.Request) {
 		return
 	}
 
-	if !anchoredSearchFile(ctx.StatePath("teamids.txt"), teamid, 0) {
+	teamids, err := os.Open(ctx.StatePath("teamids.txt"))
+	if err != nil {
+		respond(
+			w, req, Fail,
+			"Cannot read valid team IDs",
+			"An error was encountered trying to read valid teams IDs: %v", err,
+		)
+		return
+	}
+	defer teamids.Close()
+	if !hasLine(teamids, teamid) {
 		respond(
 			w, req, Fail,
 			"Invalid Team ID",
@@ -137,7 +133,7 @@ func (ctx Instance) tokenHandler(w http.ResponseWriter, req *http.Request) {
 	defer f.Close()
 
 	// Make sure the token is in the list
-	if !anchoredSearch(f, token, 0) {
+	if !hasLine(f, token) {
 		respond(
 			w, req, Fail,
 			"Unrecognized token",
@@ -190,7 +186,7 @@ func (ctx Instance) answerHandler(w http.ResponseWriter, req *http.Request) {
 
 	// Look for the answer
 	needle := fmt.Sprintf("%d %s", points, answer)
-	if !anchoredSearch(haystack, needle, 0) {
+	if !hasLine(haystack, needle) {
 		respond(
 			w, req, Fail,
 			"Wrong answer",
@@ -215,23 +211,46 @@ func (ctx Instance) answerHandler(w http.ResponseWriter, req *http.Request) {
 }
 
 type PuzzleMap struct {
-	Points int    `json:"points"`
+	Points int
-	Path   string `json:"path"`
+	Path   string
+}
+
+func (pm *PuzzleMap) MarshalJSON() ([]byte, error) {
+	if pm == nil {
+		return []byte("null"), nil
+	}
+
+	jPath, err := json.Marshal(pm.Path)
+	if err != nil {
+		return nil, err
+	}
+
+	ret := fmt.Sprintf("[%d,%s]", pm.Points, string(jPath))
+	return []byte(ret), nil
 }
 
 func (ctx Instance) puzzlesHandler(w http.ResponseWriter, req *http.Request) {
 	w.Header().Set("Content-Type", "application/json")
 	w.WriteHeader(http.StatusOK)
 
+	maxByCategory := map[string]int{}
+	for _, a := range ctx.PointsLog() {
+		if a.Points > maxByCategory[a.Category] {
+			maxByCategory[a.Category] = a.Points
+		}
+	}
+
 	res := map[string][]PuzzleMap{}
 	for catName, mb := range ctx.Categories {
 		mf, err := mb.Open("map.txt")
 		if err != nil {
 			log.Print(err)
+			continue
 		}
 		defer mf.Close()
 
 		pm := make([]PuzzleMap, 0, 30)
+		completed := true
 		scanner := bufio.NewScanner(mf)
 		for scanner.Scan() {
 			line := scanner.Text()
@@ -249,11 +268,17 @@ func (ctx Instance) puzzlesHandler(w http.ResponseWriter, req *http.Request) {
 			}
 
 			pm = append(pm, PuzzleMap{pointval, dir})
-			log.Print(pm)
+
+			if pointval > maxByCategory[catName] {
+				completed = false
+				break
+			}
+		}
+		if completed {
+			pm = append(pm, PuzzleMap{0, ""})
 		}
 
 		res[catName] = pm
-		log.Print(res)
 	}
 	jres, _ := json.Marshal(res)
 	w.Write(jres)

src/static.go

@@ -119,6 +119,13 @@ input {
 }
 li {
 	margin: 0.5em 0em;
+}
+nav {
+  border: solid black 2px;
+}
+nav li {
+	display: inline;
+	margin: 2em;
 }
 		`,
 	)
@@ -158,8 +165,68 @@ func staticScoreboard(w http.ResponseWriter) {
 func staticPuzzles(w http.ResponseWriter) {
 	ShowHtml(
 		w, Success,
-		"Puzzles",
+		"Open Puzzles",
-		"XXX: This would be the puzzles overview",
+		`
+<div id="puzzles"></div>
+<script>
+
+function render(obj) {
+	let element = document.getElementById("puzzles");
+  let cats = [];
+  for (let cat in obj) {
+    cats.push(cat);
+    console.log(cat);
+  }
+  cats.sort();
+
+  for (let cat of cats) {
+    let puzzles = obj[cat];
+    
+    let pdiv = document.createElement('div');
+    pdiv.className = 'category';
+    
+    let h = document.createElement('h2');
+    pdiv.appendChild(h);
+    h.textContent = cat;
+    
+    let l = document.createElement('ul');
+    pdiv.appendChild(l);
+    
+    for (var puzzle of puzzles) {
+      var points = puzzle[0];
+      var id = puzzle[1];
+  
+      var i = document.createElement('li');
+      l.appendChild(i);
+  
+      if (points === 0) {
+  	    i.textContent = "‡";
+      } else {
+      	var a = document.createElement('a');
+      	i.appendChild(a);
+      	a.textContent = points;
+        a.href = cat + "/" + id + "/index.html";
+	    }
+  	}
+
+		element.appendChild(pdiv);
+  }
+}
+
+function init() {
+	fetch("puzzles.json")
+	.then(function(resp) {
+		return resp.json();
+	}).then(function(obj) {
+		render(obj);
+	}).catch(function(err) {
+		console.log("Error", err);
+	});
+}
+
+window.addEventListener("load", init);
+</script>
+		`,
 	)
 }