fix: guarantee clicks challenge in daily set (#167)

Players blocked on zone progression had days where all three daily
challenges (bossesDefeated, questsCompleted, prestige) required
progression they couldn't make. Always including a clicks challenge
ensures at least one challenge is completable regardless of where
the player is in the game.

apps/api/src/services/dailyChallenges.ts

@@ -71,8 +71,7 @@ const shuffleWithSeed = <T>(array: Array<T>, seed: number): Array<T> => {
   return result;
 };
 
-const challengeTypes: Array<DailyChallengeType> = [
-  "clicks",
+const progressionChallengeTypes: Array<DailyChallengeType> = [
   "bossesDefeated",
   "questsCompleted",
   "prestige",
@@ -80,7 +79,8 @@ const challengeTypes: Array<DailyChallengeType> = [
 
 /**
  * Generates 3 daily challenges for the given date string, deterministically.
- * Picks one challenge from 3 different randomly-selected types.
+ * Always includes a "clicks" challenge (always completable regardless of
+ * progression), then picks 2 more from the remaining types.
  * @param dateString - The date string (YYYY-MM-DD) to generate challenges for.
  * @returns An array of 3 DailyChallenge objects.
  */
@@ -88,8 +88,10 @@ const generateDailyChallenges = (
   dateString: string,
 ): Array<DailyChallenge> => {
   const seed = dateSeed(dateString);
-  const selectedTypes = shuffleWithSeed([ ...challengeTypes ], seed).
-    slice(0, 3);
+  const selectedTypes: Array<DailyChallengeType> = [
+    "clicks",
+    ...shuffleWithSeed([ ...progressionChallengeTypes ], seed).slice(0, 2),
+  ];
 
   return selectedTypes.map((type, index) => {
     const templates = dailyChallengeTemplates.filter((template) => {

apps/api/test/services/dailyChallenges.spec.ts

@@ -46,13 +46,24 @@ describe("generateDailyChallenges", () => {
     expect(a.map((c) => c.id)).toEqual(b.map((c) => c.id));
   });
 
+  it("always includes a clicks challenge regardless of date", async () => {
+    vi.setSystemTime(LA_MIDNIGHT_2024_01_15);
+    const { generateDailyChallenges } = await import("../../src/services/dailyChallenges.js");
+    const day1 = generateDailyChallenges("2024-01-15");
+    const day2 = generateDailyChallenges("2024-01-16");
+    expect(day1.some((c) => c.type === "clicks")).toBe(true);
+    expect(day2.some((c) => c.type === "clicks")).toBe(true);
+  });
+
   it("generates different challenges for different dates", async () => {
     vi.setSystemTime(LA_MIDNIGHT_2024_01_15);
     const { generateDailyChallenges } = await import("../../src/services/dailyChallenges.js");
     const day1 = generateDailyChallenges("2024-01-15");
     const day2 = generateDailyChallenges("2024-01-16");
-    // They should differ in at least one challenge ID (types vary by seed)
-    expect(day1.map((c) => c.type)).not.toEqual(day2.map((c) => c.type));
+    // The 2 non-clicks types should vary by seed between dates
+    const day1NonClicks = day1.filter((c) => c.type !== "clicks").map((c) => c.type);
+    const day2NonClicks = day2.filter((c) => c.type !== "clicks").map((c) => c.type);
+    expect(day1NonClicks).not.toEqual(day2NonClicks);
   });
 });