adding habit_streak_milestones

lib/avatar-progression-storage.ts

@@ -0,0 +1,74 @@
+import { createClient } from "@/lib/supabase/client";
+
+async function getAuthenticatedUserId() {
+  const supabase = createClient();
+  const {
+    data: { user },
+    error,
+  } = await supabase.auth.getUser();
+
+  if (error || !user) {
+    return null;
+  }
+
+  return user.id;
+}
+
+export async function getCoins(): Promise<number> {
+  const userId = await getAuthenticatedUserId();
+
+  if (!userId) {
+    return 0;
+  }
+
+  const supabase = createClient();
+  const { data, error } = await supabase
+    .from("avatar_state")
+    .select("coins")
+    .eq("user_id", userId)
+    .maybeSingle();
+
+  if (error) {
+    throw new Error(error.message);
+  }
+
+  if (!data) {
+    const { error: insertError } = await supabase
+      .from("avatar_state")
+      .insert({ user_id: userId, coins: 0 });
+
+    if (insertError) {
+      throw new Error(insertError.message);
+    }
+
+    return 0;
+  }
+
+  return data.coins ?? 0;
+}
+
+export async function adjustCoins(delta: number): Promise<number> {
+  const userId = await getAuthenticatedUserId();
+
+  if (!userId) {
+    throw new Error("You must be signed in to earn points.");
+  }
+
+  const currentCoins = await getCoins();
+  const nextCoins = Math.max(0, currentCoins + delta);
+
+  const supabase = createClient();
+  const { error } = await supabase
+    .from("avatar_state")
+    .update({
+      coins: nextCoins,
+      updated_at: new Date().toISOString(),
+    })
+    .eq("user_id", userId);
+
+  if (error) {
+    throw new Error(error.message);
+  }
+
+  return nextCoins;
+}