Brancheneinstufung2/fotograf-de-scraper/backend/publish_request_api.py

from fastapi import APIRouter, Depends, HTTPException, Request, BackgroundTasks
from pydantic import BaseModel
from sqlalchemy.orm import Session
from database import get_db, DiscountCode, ReleaseParticipant, ReleaseHistory
import datetime
import logging
from gmail_service import GmailService
import re
import time
import asyncio
from typing import List, Dict, Optional

from zoneinfo import ZoneInfo

router = APIRouter(prefix="/api/publish-request", tags=["publish-request"])
logger = logging.getLogger("publish-request")

# Timezone for Berlin
TZ_BERLIN = ZoneInfo("Europe/Berlin")

# Official Project Signature
SIGNATURE_HTML = """
<br><br>
<span style="color: #888;">--</span><br>
<div dir="ltr">
  <table border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse; margin-top: 5px;">
    <tbody>
      <tr>
        <td width="220" valign="top" style="padding-right: 15px;">
          <img width="200" src="https://lh3.googleusercontent.com/d/1K7RODOqKE2e1nRJ3D4dEWdjthoTMyXUq" alt="Kinderfotos Erding Logo" style="display: block;">
        </td>
        <td valign="bottom" style="padding-left: 15px; border-left: 1px solid #ddd; font-family: sans-serif; font-size: 13px; color: #333; line-height: 1.5;">
          <p style="margin: 0;"><b>Kinderfotos Erding</b> | <a href="http://www.kinderfotos-erding.de/" target="_blank" style="color: #1155cc; text-decoration: none;">www.kinderfotos-erding.de</a></p>
          <p style="margin: 0; color: #666;">Gartenstr. 10 | 85445 Oberding | 08122-8470867</p>
        </td>
      </tr>
    </tbody>
  </table>
</div>
"""

class CodesUpload(BaseModel):
    codes: str # comma separated

class SendReleaseRequest(BaseModel):
    emails: List[Dict[str, str]]
    scheduled_time: Optional[str] = None # e.g. "10:00"
    participants: Optional[List[Dict[str, str]]] = None # [{email, first_name}]

async def delayed_send(emails: List[Dict[str, str]], scheduled_time: str, db_session_factory):
    try:
        # Calculate delay using Berlin Timezone
        now = datetime.datetime.now(TZ_BERLIN)
        target_h, target_m = map(int, scheduled_time.split(":"))
        target_time = now.replace(hour=target_h, minute=target_m, second=0, microsecond=0)
        
        if target_time < now:
            target_time += datetime.timedelta(days=1)
            
        delay_seconds = (target_time - now).total_seconds()
        logger.info(f"Scheduling {len(emails)} emails for {scheduled_time} Berlin Time (in {delay_seconds} seconds)")
        
        await asyncio.sleep(delay_seconds)
        
        # We need a fresh DB session for the background task
        db = db_session_factory()
        try:
            service = GmailService(db)
            success_count = 0
            for email_data in emails:
                if service.send_email(email_data["to"], email_data["subject"], email_data["body"]):
                    success_count += 1
                await asyncio.sleep(1) # Rate limiting
                
            logger.info(f"Scheduled send complete: {success_count}/{len(emails)} success.")
        finally:
            db.close()
    except Exception as e:
        logger.exception("Error in delayed_send background task")

@router.post("/send")
async def send_requests(data: SendReleaseRequest, background_tasks: BackgroundTasks, db: Session = Depends(get_db)):
    # Store participant names for later (webhook)
    if data.participants:
        for p in data.participants:
            email = p.get("email", "").strip().lower()
            first_name = p.get("first_name", "").strip()
            if email and first_name:
                existing = db.query(ReleaseParticipant).filter(ReleaseParticipant.email == email).first()
                if existing:
                    existing.first_name = first_name
                else:
                    db.add(ReleaseParticipant(email=email, first_name=first_name))
        db.commit()

    if data.scheduled_time:
        # Pass a way to get a new session to the background task
        from database import SessionLocal
        
        # Log to history
        db.add(ReleaseHistory(recipient_count=len(data.emails), scheduled_time=data.scheduled_time))
        db.commit()

        background_tasks.add_task(delayed_send, data.emails, data.scheduled_time, SessionLocal)
        return {"status": "scheduled", "message": f"Versand für {data.scheduled_time} geplant."}
    
    # Log immediate send to history
    db.add(ReleaseHistory(recipient_count=len(data.emails), scheduled_time="Sofort"))
    db.commit()

    # Immediate send
    service = GmailService(db)
    success = 0
    failed = []
    for email_data in data.emails:
        if service.send_email(email_data["to"], email_data["subject"], email_data["body"]):
            success += 1
        else:
            failed.append(email_data["to"])
    
    return {"status": "success", "success": success, "failed": failed}

@router.get("/history")
def get_history(db: Session = Depends(get_db)):
    history = db.query(ReleaseHistory).order_by(ReleaseHistory.timestamp.desc()).all()
    return [{"id": h.id, "timestamp": h.timestamp.isoformat(), "recipient_count": h.recipient_count, "scheduled_time": h.scheduled_time} for h in history]

@router.get("/stats")
def get_stats(db: Session = Depends(get_db)):
    total = db.query(DiscountCode).count()
    used = db.query(DiscountCode).filter(DiscountCode.is_used == 1).count()
    available = total - used
    return {"total": total, "used": used, "available": available}

@router.get("/responses")
def get_responses(db: Session = Depends(get_db)):
    responses = db.query(DiscountCode).filter(DiscountCode.is_used == 1).all()
    return [{"email": r.assigned_to_email, "code": r.code, "used_at": r.used_at.isoformat()} for r in responses]

@router.post("/codes")
def upload_codes(data: CodesUpload, db: Session = Depends(get_db)):
    codes_list = [c.strip() for c in data.codes.split(",") if c.strip()]
    added = 0
    for code in set(codes_list):
        existing = db.query(DiscountCode).filter(DiscountCode.code == code).first()
        if not existing:
            new_code = DiscountCode(code=code, is_used=0)
            db.add(new_code)
            added += 1
    db.commit()
    return {"status": "success", "added": added}

class WebhookData(BaseModel):
    email: str

@router.post("/webhook")
async def handle_webhook(request: Request, db: Session = Depends(get_db)):
    # Try to parse JSON from Google Forms webhook
    try:
        data = await request.json()
    except:
        raise HTTPException(status_code=400, detail="Invalid JSON")
    
    # We expect {"email": "..."} or similar from the Google Apps Script
    email = data.get("email") or data.get("Email")
    if not email:
        logger.error(f"Webhook received without email: {data}")
        return {"status": "error", "message": "Email not found in webhook payload"}
        
    email = email.strip().lower()
    
    # Check if this email already got a code
    already_assigned = db.query(DiscountCode).filter(DiscountCode.assigned_to_email == email).first()
    if already_assigned:
        logger.info(f"Email {email} already received code {already_assigned.code}")
        return {"status": "success", "message": "Already sent"}

    # Get a free code
    free_code = db.query(DiscountCode).filter(DiscountCode.is_used == 0).first()
    if not free_code:
        logger.error("NO FREE DISCOUNT CODES LEFT!")
        return {"status": "error", "message": "No codes available"}

    # Look up participant name
    participant = db.query(ReleaseParticipant).filter(ReleaseParticipant.email == email).first()
    first_name = participant.first_name if participant else "Ihr Lieben"

    # Mark as used
    free_code.is_used = 1
    free_code.assigned_to_email = email
    free_code.used_at = datetime.datetime.utcnow()
    db.commit()

    # Send Thank You Email with GmailService
    service = GmailService(db)
    subject = "Dankeschön für Eure Freigabe & Euer Rabattcode"
    
    # Image provided by user
    INSTRUCTIONS_IMAGE_URL = "https://mail.google.com/mail/u/2?ui=2&ik=719adaa3c5&attid=0.1&permmsgid=msg-a:r7482671925923393616&th=196e322c399dbc7f&view=fimg&fur=ip&permmsgid=msg-a:r7482671925923393616&sz=s0-l75-ft&attbid=ANGjdJ9_U6ayMFgwbupt4HalTKO867IHx6N70eNbPfQmTLNzRXilJxI-n8a1gjM8xVcP5HEOgaVxfp3FnJPzTYEEYhK4gSU-Il_0a6OtzFYscp55_W4iyxuxjyPvK4&disp=emb&realattid=ii_maspzxv50&zw"

    body_html = f"""
    <p>Hallo {first_name},</p>
    <p>Vielen Dank nochmal für die Freigabe zur Veröffentlichung, das ist super nett von Euch!</p>
    <p>Hier ist euer Gutscheincode über 25 Euro: <strong style="font-size: 18px; color: #4F46E5;">{free_code.code}</strong></p>
    <p>Um den Gutschein einzugeben, musst du auf den Preis des Warenkorbs drücken (über dem Button zur Kasse gehen):</p>
    <p><img src="{INSTRUCTIONS_IMAGE_URL}" alt="Anleitung Gutschein einlösen" style="max-width: 100%; border: 1px solid #ddd; border-radius: 8px;"></p>
    <p>Liebe Grüße,<br>das Team von Kinderfotos Erding</p>
    {SIGNATURE_HTML}
    """
    
    try:
        success = service.send_email(email, subject, body_html)
        if success:
            logger.info(f"Successfully sent code {free_code.code} to {email}")
            return {"status": "success", "message": "Email sent"}
        else:
            logger.error(f"Failed to send email to {email}")
            free_code.is_used = 0
            free_code.assigned_to_email = None
            free_code.used_at = None
            db.commit()
            return {"status": "error", "message": "Failed to send email"}
    except Exception as e:
        logger.exception("Error sending webhook email")
        free_code.is_used = 0
        free_code.assigned_to_email = None
        free_code.used_at = None
        db.commit()
        return {"status": "error", "message": str(e)}