+ receive_judging(prompt_id, session_id, word_groups) {
+ const player = this.players_by_session[session_id];
+ if (! player)
+ return { valid: false, message: "Player not found" };
+
+ const prompt = this.state.prompts.find(p => p.id === prompt_id);
+ if (! prompt)
+ return { valid: false, message: "Prompt not found" };
+
+ if (prompt !== this.state.active_prompt)
+ return { valid: false, message: "Prompt no longer active" };
+
+ /* Each player submits some number of groups of answers that
+ * should be considered equivalent. The server expands that into
+ * the set of pair-wise equivalencies that are expressed. The
+ * reason for that is so that the server can determine which
+ * pair-wise equivalencies have majority support.
+ */
+ for (let group of word_groups) {
+
+ for (let i = 0; i < group.length - 1; i++) {
+ for (let j = i + 1; j < group.length; j++) {
+ let eq = [group[i], group[j]];
+
+ /* Put the two words into a reliable order so that we don't
+ * miss a pair of equivalent equivalencies just because they
+ * happen to be in the opposite order. */
+ if (eq[0].localeCompare(eq[1]) > 0) {
+ eq = [group[j], group[i]];
+ }
+
+ const exist = this.equivalencies[`${eq[0]}:${eq[1]}`];
+ if (exist) {
+ exist.count++;
+ } else {
+ this.equivalencies[`${eq[0]}:${eq[1]}`] = {
+ count: 1,
+ words: eq
+ };
+ }
+
+ }
+ }
+ }
+