app.py

"""
FomoFeed - Smart Notification Generator v2
Template-based with intelligent selection (NO GPT-2)
"""

from fastapi import FastAPI, HTTPException
from pydantic import BaseModel
import random
from datetime import datetime
import uvicorn

app = FastAPI(title="FomoFeed Smart Notification Generator", version="2.0.0")

class UserProfile(BaseModel):
    user_id: int
    username: str
    is_creator: bool = False
    top_tags: list[str] = []
    last_post_days_ago: int = 0
    avg_engagement: float = 0.0
    follower_count: int = 0
    optimal_hour: int = 19
    
class NotificationRequest(BaseModel):
    profile: UserProfile
    notification_type: str
    language: str = "tr"

class NotificationResponse(BaseModel):
    title: str
    body: str
    emoji: str
    confidence: float

# ════════════════════════════════════════
# AKILLI TEMPLATE SİSTEMİ
# ════════════════════════════════════════
# Kişiselleştirme değişkenleri:
# {username} → kullanıcı adı
# {days} → kaç gündür inaktif
# {followers} → takipçi sayısı
# {tag} → en popüler tag
# {hour} → optimal saat

TEMPLATES = {
    "tr": {
        "low_activity": {
            "casual": [  # 1-7 gün inaktif
                {"title": "👋 Naber {username}?", "body": "Takip ettiklerin yeni şeyler paylaştı. Bir göz at!"},
                {"title": "📱 Feedin dolmuş!", "body": "Son {days} günde birçok yeni paylaşım yapıldı."},
                {"title": "✨ Bir şeyler kaçırıyorsun", "body": "Takip ettiklerinden yeni içerikler var."},
            ],
            "warm": [  # 7-30 gün inaktif
                {"title": "🥺 Seni özledik {username}", "body": "Yokluğunda {days} günlük içerik birikti."},
                {"title": "👀 Neler kaçırdın!", "body": "Son zamanlarda harika paylaşımlar yapıldı. Görmek ister misin?"},
                {"title": "💭 Seni düşündük", "body": "Bir süredir görünmüyorsun. Her şey yolunda mı?"},
            ],
            "cold": [  # 30+ gün inaktif
                {"title": "🌟 Geri dönsen harika olur", "body": "Topluluk büyümeye devam ediyor. Sen de katıl!"},
                {"title": "💚 Hâlâ buradasın değil mi?", "body": "Seni bekleyen içerikler var. Bir baksan mı?"},
                {"title": "🔄 Çok şey değişti!", "body": "{days} gündür gelmedin. Yeni özellikler ve içerikler seni bekliyor."},
            ],
            "creator_specific": [  # İçerik üretici
                {"title": "🎨 Takipçilerin seni bekliyor", "body": "{followers} takipçin yeni içerik bekliyor!"},
                {"title": "📸 İlham geldi mi?", "body": "Son paylaşımından {days} gün oldu. Takipçilerin merak ediyor!"},
                {"title": "🔥 Senin tarzın özlendi", "body": "Platformda eksikliğin hissediliyor. Geri dön!"},
            ]
        },
        "optimal_time": {
            "feed_ready": [
                {"title": "⏰ Tam zamanı!", "body": "Şu an platformdan en çok keyif alacağın an."},
                {"title": "🔥 Feedin hazır", "body": "Senin için seçilmiş içerikler bekliyor."},
                {"title": "✨ İyi vakit geçirmeye hazır mısın?", "body": "Feedinde ilgini çekecek paylaşımlar var."},
            ],
            "creator_post_time": [
                {"title": "📊 Paylaşım zamanı!", "body": "Takipçilerin şu an en aktif. İçerik paylaşmak için ideal!"},
                {"title": "🎯 Prime time!", "body": "Saat {hour}:00 — takipçilerin online. Paylaşım yap!"},
            ]
        },
        "trending_tag": {
            "default": [
                {"title": "🔥 #{tag} trend!", "body": "Bu konuda paylaşım yapma fırsatını kaçırma."},
                {"title": "⚡ #{tag} patladı!", "body": "Herkes bu konu hakkında konuşuyor. Sen de katıl!"},
                {"title": "📈 #{tag} yükselişte", "body": "Bu trend'e katılmak için harika bir zaman."},
            ]
        },
        "milestone": {
            "default": [
                {"title": "🎉 Tebrikler {username}!", "body": "{followers} takipçiye ulaştın!"},
                {"title": "⭐ Harika gidiyorsun!", "body": "Topluluk seni seviyor. Devam et!"},
            ]
        }
    },
    "en": {
        "low_activity": {
            "casual": [
                {"title": "👋 Hey {username}!", "body": "People you follow shared new stuff. Take a look!"},
                {"title": "📱 Your feed is full!", "body": "Lots of new posts in the last {days} days."},
                {"title": "✨ You're missing out", "body": "New content from people you follow."},
            ],
            "warm": [
                {"title": "🥺 We miss you {username}", "body": "{days} days of content piled up while you were away."},
                {"title": "👀 See what you missed!", "body": "Amazing posts were shared recently. Want to see?"},
                {"title": "💭 Thinking of you", "body": "Haven't seen you in a while. Everything okay?"},
            ],
            "cold": [
                {"title": "🌟 We'd love to see you back", "body": "The community keeps growing. Join in!"},
                {"title": "💚 Still there?", "body": "Content is waiting for you. Want to take a peek?"},
                {"title": "🔄 A lot has changed!", "body": "It's been {days} days. New features and content await you."},
            ],
            "creator_specific": [
                {"title": "🎨 Your followers are waiting", "body": "{followers} followers want new content from you!"},
                {"title": "📸 Feeling inspired?", "body": "It's been {days} days since your last post. Followers are curious!"},
                {"title": "🔥 Your style is missed", "body": "The platform feels your absence. Come back!"},
            ]
        },
        "optimal_time": {
            "feed_ready": [
                {"title": "⏰ Perfect timing!", "body": "This is the best moment to enjoy the platform."},
                {"title": "🔥 Your feed is ready", "body": "Curated content is waiting for you."},
                {"title": "✨ Ready for a good time?", "body": "Your feed has posts you'll love."},
            ],
            "creator_post_time": [
                {"title": "📊 Time to post!", "body": "Your followers are most active right now. Ideal time to share!"},
                {"title": "🎯 Prime time!", "body": "It's {hour}:00 — your followers are online. Post now!"},
            ]
        },
        "trending_tag": {
            "default": [
                {"title": "🔥 #{tag} is trending!", "body": "Don't miss the chance to post about this."},
                {"title": "⚡ #{tag} is blowing up!", "body": "Everyone's talking about it. Join in!"},
                {"title": "📈 #{tag} is rising", "body": "Great time to hop on this trend."},
            ]
        },
        "milestone": {
            "default": [
                {"title": "🎉 Congrats {username}!", "body": "You reached {followers} followers!"},
                {"title": "⭐ You're doing great!", "body": "The community loves you. Keep going!"},
            ]
        }
    },
    "de": {
        "low_activity": {
            "casual": [
                {"title": "👋 Hey {username}!", "body": "Leute denen du folgst haben Neues geteilt!"},
            ],
            "warm": [
                {"title": "🥺 Wir vermissen dich", "body": "{days} Tage an Inhalten haben sich angesammelt."},
            ],
            "cold": [
                {"title": "🌟 Komm zurück!", "body": "Die Community wächst weiter. Mach mit!"},
            ],
            "creator_specific": [
                {"title": "🎨 Deine Follower warten", "body": "{followers} Follower wollen neuen Content!"},
            ]
        },
        "optimal_time": {
            "feed_ready": [
                {"title": "⏰ Perfektes Timing!", "body": "Jetzt ist der beste Moment zum Genießen."},
            ],
            "creator_post_time": [
                {"title": "📊 Zeit zu posten!", "body": "Deine Follower sind jetzt am aktivsten."},
            ]
        },
        "trending_tag": {
            "default": [
                {"title": "🔥 #{tag} ist im Trend!", "body": "Verpasse nicht die Chance darüber zu posten."},
            ]
        },
        "milestone": {
            "default": [
                {"title": "🎉 Glückwunsch {username}!", "body": "Du hast {followers} Follower erreicht!"},
            ]
        }
    },
    "fr": {
        "low_activity": {
            "casual": [
                {"title": "👋 Salut {username}!", "body": "Tes abonnés ont partagé du nouveau!"},
            ],
            "warm": [
                {"title": "🥺 Tu nous manques", "body": "{days} jours de contenu t'attendent."},
            ],
            "cold": [
                {"title": "🌟 Reviens!", "body": "La communauté grandit. Rejoins-nous!"},
            ],
            "creator_specific": [
                {"title": "🎨 Tes abonnés t'attendent", "body": "{followers} abonnés veulent du nouveau contenu!"},
            ]
        },
        "optimal_time": {
            "feed_ready": [
                {"title": "⏰ C'est le moment!", "body": "Le meilleur moment pour profiter de la plateforme."},
            ],
            "creator_post_time": [
                {"title": "📊 C'est l'heure de poster!", "body": "Tes abonnés sont les plus actifs maintenant."},
            ]
        },
        "trending_tag": {
            "default": [
                {"title": "🔥 #{tag} est en tendance!", "body": "Ne rate pas l'occasion d'en parler."},
            ]
        },
        "milestone": {
            "default": [
                {"title": "🎉 Félicitations {username}!", "body": "Tu as atteint {followers} abonnés!"},
            ]
        }
    },
    "ar": {
        "low_activity": {
            "casual": [
                {"title": "👋 أهلاً {username}!", "body": "اللي تتابعهم نشروا أشياء جديدة!"},
            ],
            "warm": [
                {"title": "🥺 اشتقنا لك", "body": "محتوى {days} يوم مستنيك."},
            ],
            "cold": [
                {"title": "🌟 ارجع لنا!", "body": "المجتمع يكبر. انضم لنا!"},
            ],
            "creator_specific": [
                {"title": "🎨 متابعينك مستنينك", "body": "{followers} متابع يبون محتوى جديد!"},
            ]
        },
        "optimal_time": {
            "feed_ready": [
                {"title": "⏰ الوقت المثالي!", "body": "أفضل وقت للاستمتاع بالمنصة."},
            ],
            "creator_post_time": [
                {"title": "📊 وقت النشر!", "body": "متابعينك أكثر نشاطاً الحين."},
            ]
        },
        "trending_tag": {
            "default": [
                {"title": "🔥 #{tag} ترند!", "body": "لا تفوت فرصة النشر عن هالموضوع."},
            ]
        },
        "milestone": {
            "default": [
                {"title": "🎉 مبروك {username}!", "body": "وصلت {followers} متابع!"},
            ]
        }
    }
}

def select_template(request: NotificationRequest) -> dict:
    """
    Akıllı template seçimi:
    - İnaktiflik süresine göre ton ayarla (casual/warm/cold)
    - Creator mı değil mi?
    - Kişiselleştirme değişkenlerini doldur
    """
    profile = request.profile
    ntype = request.notification_type
    lang = request.language
    
    # Dil fallback
    if lang not in TEMPLATES:
        lang = "en"
    
    lang_templates = TEMPLATES[lang]
    
    # Bildirim tipine göre template grubunu seç
    if ntype not in lang_templates:
        ntype = "optimal_time"
    
    type_templates = lang_templates[ntype]
    
    # Alt kategori seç
    if ntype == "low_activity":
        days = profile.last_post_days_ago
        
        if profile.is_creator and "creator_specific" in type_templates:
            # Creator'lara özel mesaj (%40 ihtimal)
            if random.random() < 0.4:
                pool = type_templates["creator_specific"]
            elif days <= 7:
                pool = type_templates.get("casual", type_templates.get("warm", []))
            elif days <= 30:
                pool = type_templates.get("warm", type_templates.get("cold", []))
            else:
                pool = type_templates.get("cold", type_templates.get("warm", []))
        else:
            if days <= 7:
                pool = type_templates.get("casual", [])
            elif days <= 30:
                pool = type_templates.get("warm", [])
            else:
                pool = type_templates.get("cold", [])
    
    elif ntype == "optimal_time":
        if profile.is_creator and "creator_post_time" in type_templates:
            pool = type_templates["creator_post_time"] if random.random() < 0.5 else type_templates.get("feed_ready", [])
        else:
            pool = type_templates.get("feed_ready", [])
    
    else:
        pool = type_templates.get("default", [])
    
    # Boş pool kontrolü
    if not pool:
        pool = [{"title": "👋 Hey!", "body": "Check out what's new."}]
    
    # Rastgele template seç
    template = random.choice(pool)
    
    # Değişkenleri doldur
    tag = profile.top_tags[0] if profile.top_tags else "trending"
    
    title = template["title"].format(
        username=profile.username,
        days=profile.last_post_days_ago,
        followers=profile.follower_count,
        tag=tag,
        hour=profile.optimal_hour
    )
    
    body = template["body"].format(
        username=profile.username,
        days=profile.last_post_days_ago,
        followers=profile.follower_count,
        tag=tag,
        hour=profile.optimal_hour
    )
    
    # Emoji
    emoji_map = {
        "optimal_time": "⏰",
        "low_activity": "👋",
        "trending_tag": "🔥",
        "milestone": "🎉"
    }
    
    return {
        "title": title,
        "body": body,
        "emoji": emoji_map.get(ntype, "📱"),
        "confidence": 0.85
    }

@app.get("/")
def root():
    return {
        "service": "FomoFeed Smart Notification Generator",
        "status": "active",
        "version": "2.0.0",
        "method": "intelligent_template_selection"
    }

@app.get("/health")
def health():
    return {
        "status": "healthy",
        "model_loaded": True,
        "timestamp": datetime.now().isoformat()
    }

@app.post("/generate", response_model=NotificationResponse)
def generate_notification(request: NotificationRequest):
    try:
        result = select_template(request)
        return NotificationResponse(**result)
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))

@app.post("/batch_generate")
def batch_generate(requests: list[NotificationRequest]):
    try:
        results = []
        for req in requests:
            result = select_template(req)
            results.append({"user_id": req.profile.user_id, **result})
        return {"notifications": results}
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))

if __name__ == "__main__":
    uvicorn.run(app, host="0.0.0.0", port=7860)