v0.2 - 19 features: comparator, allergies, gamification, shopping list, achievements, stats, profile, share, bottom nav

backend/app/services/achievements.py

@@ -0,0 +1,59 @@
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy import select, func
+from app.models.achievement import Achievement, UserAchievement
+from app.models.scan import Scan
+
+ACHIEVEMENT_DEFS = [
+    {"code": "first_scan", "name": "Primeiro Scan", "description": "Escaneie seu primeiro produto", "emoji": "🎯", "target": 1},
+    {"code": "detective", "name": "Detetive de Rótulos", "description": "Escaneie 10 produtos", "emoji": "🔍", "target": 10},
+    {"code": "expert", "name": "Expert", "description": "Escaneie 50 produtos", "emoji": "🧠", "target": 50},
+    {"code": "master", "name": "Master", "description": "Escaneie 100 produtos", "emoji": "👑", "target": 100},
+    {"code": "photographer", "name": "Fotógrafo", "description": "Analise 5 produtos por foto", "emoji": "📸", "target": 5},
+    {"code": "comparator", "name": "Comparador", "description": "Compare produtos 3 vezes", "emoji": "⚖️", "target": 3},
+]
+
+async def seed_achievements(db: AsyncSession):
+    for a_def in ACHIEVEMENT_DEFS:
+        res = await db.execute(select(Achievement).where(Achievement.code == a_def["code"]))
+        if not res.scalar_one_or_none():
+            db.add(Achievement(**a_def))
+    await db.commit()
+
+async def check_achievements(user_id: int, db: AsyncSession, action: str = "scan"):
+    """Check and unlock achievements after an action."""
+    # Get all achievements
+    res = await db.execute(select(Achievement))
+    all_achievements = {a.code: a for a in res.scalars().all()}
+    
+    # Get already unlocked
+    unlocked_res = await db.execute(select(UserAchievement).where(UserAchievement.user_id == user_id))
+    unlocked_ids = {ua.achievement_id for ua in unlocked_res.scalars().all()}
+    
+    # Count scans
+    total_res = await db.execute(select(func.count(Scan.id)).where(Scan.user_id == user_id))
+    total_scans = total_res.scalar() or 0
+    
+    photo_res = await db.execute(
+        select(func.count(Scan.id)).where(Scan.user_id == user_id, Scan.barcode == "PHOTO")
+    )
+    photo_scans = photo_res.scalar() or 0
+    
+    checks = {
+        "first_scan": total_scans >= 1,
+        "detective": total_scans >= 10,
+        "expert": total_scans >= 50,
+        "master": total_scans >= 100,
+        "photographer": photo_scans >= 5,
+    }
+    
+    new_unlocked = []
+    for code, condition in checks.items():
+        if code in all_achievements and all_achievements[code].id not in unlocked_ids and condition:
+            ua = UserAchievement(user_id=user_id, achievement_id=all_achievements[code].id)
+            db.add(ua)
+            new_unlocked.append(all_achievements[code].name)
+    
+    if new_unlocked:
+        await db.commit()
+    
+    return new_unlocked