umstellung auf modulare klassen und dateien
This commit is contained in:
parent
be49c2a6e7
commit
3897ee1a15
|
|
@ -1,282 +1,19 @@
|
|||
#!/usr/bin/env python3
|
||||
import requests
|
||||
import json
|
||||
import hashlib
|
||||
# bundle_checker.py
|
||||
import logging
|
||||
import difflib
|
||||
from datetime import datetime
|
||||
from bs4 import BeautifulSoup
|
||||
from bundle_parser import BundleParser
|
||||
|
||||
from sqlalchemy import create_engine, Column, Integer, String, Float, DateTime, ForeignKey, Text
|
||||
from sqlalchemy.orm import declarative_base, relationship, sessionmaker
|
||||
|
||||
# Konfiguriere Logging – ändere das Level bei Bedarf (DEBUG, INFO, WARNING, ERROR)
|
||||
DEBUG_LEVEL = logging.DEBUG
|
||||
logging.basicConfig(
|
||||
level=DEBUG_LEVEL,
|
||||
format="%(asctime)s [%(levelname)s] %(message)s",
|
||||
datefmt="%Y-%m-%d %H:%M:%S"
|
||||
)
|
||||
logger = logging.getLogger(__name__)
|
||||
|
||||
# Basis-Klasse für SQLAlchemy-Modelle (2.0-konform)
|
||||
Base = declarative_base()
|
||||
|
||||
# ---------------------------
|
||||
# Datenbank-Modelle
|
||||
# ---------------------------
|
||||
|
||||
class Bundle(Base):
|
||||
__tablename__ = 'bundles'
|
||||
id = Column(Integer, primary_key=True)
|
||||
machine_name = Column(String, unique=True)
|
||||
human_name = Column(String) # Kann leer bleiben, wenn nicht extrahiert
|
||||
current_version_id = Column(Integer, ForeignKey('bundle_versions.id'))
|
||||
|
||||
# Beziehung zur aktuellen Version (post_update=True hilft bei zirkulären Abhängigkeiten)
|
||||
current_version = relationship("BundleVersion", uselist=False,
|
||||
foreign_keys=[current_version_id],
|
||||
post_update=True)
|
||||
# Alle Versionen (historisch)
|
||||
versions = relationship("BundleVersion", back_populates="bundle",
|
||||
foreign_keys=lambda: [BundleVersion.bundle_id])
|
||||
# Verkaufshistorie
|
||||
sales_history = relationship("BundleSalesHistory", back_populates="bundle")
|
||||
# Einzelne Elemente des Bundles (z. B. enthaltene Bücher, Spiele etc.)
|
||||
items = relationship("BundleItem", back_populates="bundle")
|
||||
|
||||
class BundleVersion(Base):
|
||||
__tablename__ = 'bundle_versions'
|
||||
id = Column(Integer, primary_key=True)
|
||||
bundle_id = Column(Integer, ForeignKey('bundles.id'))
|
||||
version_hash = Column(String)
|
||||
version_data = Column(Text) # JSON-Daten als String
|
||||
timestamp = Column(DateTime, default=datetime.utcnow)
|
||||
|
||||
# Explizite Angabe des Fremdschlüssels
|
||||
bundle = relationship("Bundle", back_populates="versions", foreign_keys=[bundle_id])
|
||||
|
||||
class BundleSalesHistory(Base):
|
||||
__tablename__ = 'bundle_sales_history'
|
||||
id = Column(Integer, primary_key=True)
|
||||
bundle_id = Column(Integer, ForeignKey('bundles.id'))
|
||||
bundles_sold = Column(Float)
|
||||
timestamp = Column(DateTime, default=datetime.utcnow)
|
||||
|
||||
bundle = relationship("Bundle", back_populates="sales_history")
|
||||
|
||||
class BundleItem(Base):
|
||||
__tablename__ = 'bundle_items'
|
||||
id = Column(Integer, primary_key=True)
|
||||
bundle_id = Column(Integer, ForeignKey('bundles.id'))
|
||||
title = Column(String) # Titel des Elements (z. B. Buch- oder Spielname)
|
||||
category = Column(String) # Kategorie, z. B. "book", "game" oder "software"
|
||||
details = Column(Text) # Optionale Detaildaten als JSON-String
|
||||
|
||||
bundle = relationship("Bundle", back_populates="items")
|
||||
|
||||
# ---------------------------
|
||||
# Hilfsfunktionen
|
||||
# ---------------------------
|
||||
|
||||
def calculate_hash(data: dict) -> str:
|
||||
"""Berechnet einen SHA-256-Hash aus dem sortierten JSON-String der Daten."""
|
||||
json_string = json.dumps(data, sort_keys=True, ensure_ascii=False)
|
||||
hash_value = hashlib.sha256(json_string.encode('utf-8')).hexdigest()
|
||||
logger.debug(f"Berechneter Hash: {hash_value}")
|
||||
return hash_value
|
||||
|
||||
def log_diff(old_data: dict, new_data: dict):
|
||||
"""
|
||||
Vergleicht zwei JSON-Daten (als dict) und gibt einen unified diff als String aus.
|
||||
Nur im DEBUG-Level wird der detaillierte Vergleich ausgegeben.
|
||||
"""
|
||||
old_str = json.dumps(old_data, sort_keys=True, indent=4, ensure_ascii=False).splitlines()
|
||||
new_str = json.dumps(new_data, sort_keys=True, indent=4, ensure_ascii=False).splitlines()
|
||||
diff = difflib.unified_diff(old_str, new_str, fromfile="alte_version", tofile="neue_version", lineterm="")
|
||||
diff_text = "\n".join(diff)
|
||||
logger.debug("Unterschiede zwischen den Versionen:\n" + diff_text)
|
||||
|
||||
def fetch_bundle_data(url: str) -> dict:
|
||||
"""
|
||||
Lädt die Detailseite eines Bundles und extrahiert den JSON-Inhalt aus dem <script>-Tag
|
||||
mit id="webpack-bundle-page-data" (diese Seite enthält die detaillierten Bundle-Daten).
|
||||
"""
|
||||
logger.info(f"Rufe Bundle-Daten von {url} ab...")
|
||||
response = requests.get(url)
|
||||
response.raise_for_status()
|
||||
soup = BeautifulSoup(response.text, "html.parser")
|
||||
script_tag = soup.find("script", {"id": "webpack-bundle-page-data", "type": "application/json"})
|
||||
if not script_tag:
|
||||
logger.error("Kein JSON-Datenblock 'webpack-bundle-page-data' gefunden!")
|
||||
raise ValueError("Kein JSON-Datenblock gefunden!")
|
||||
data = json.loads(script_tag.string)
|
||||
logger.debug(f"Erhaltener JSON-Block (gekürzt): {str(data)[:200]} ...")
|
||||
return data
|
||||
|
||||
def process_bundle(session, url: str):
|
||||
"""
|
||||
Verarbeitet ein einzelnes Bundle:
|
||||
- Lädt die Detailseite und extrahiert den JSON-Datensatz (bundleData)
|
||||
- Berechnet einen Hash des relevanten Datenbereichs
|
||||
- Vergleicht mit der letzten Version in der DB und speichert bei Änderung eine neue Version
|
||||
- Speichert Verkaufszahlen in einer separaten Tabelle
|
||||
- Extrahiert und speichert, falls vorhanden, einzelne Bundle-Elemente
|
||||
"""
|
||||
try:
|
||||
data = fetch_bundle_data(url)
|
||||
except Exception as e:
|
||||
logger.error(f"Fehler beim Laden der Bundle-Daten von {url}: {e}")
|
||||
return
|
||||
|
||||
# Es wird angenommen, dass die Bundle-Daten unter dem Schlüssel "bundleData" stehen.
|
||||
bundle_data = data.get("bundleData", {})
|
||||
machine_name = bundle_data.get("machine_name", "")
|
||||
human_name = bundle_data.get("human_name", "")
|
||||
logger.info(f"Verarbeite Bundle '{human_name}' (machine_name: {machine_name})")
|
||||
|
||||
# Definiere hier den relevanten Datenausschnitt (anpassen, falls nötig)
|
||||
relevant_data = bundle_data
|
||||
|
||||
new_hash = calculate_hash(relevant_data)
|
||||
|
||||
# Suche, ob das Bundle bereits existiert
|
||||
bundle = session.query(Bundle).filter_by(machine_name=machine_name).first()
|
||||
if not bundle:
|
||||
logger.info(f"Neues Bundle gefunden: '{human_name}' (machine_name: {machine_name})")
|
||||
bundle = Bundle(machine_name=machine_name, human_name=human_name)
|
||||
session.add(bundle)
|
||||
session.commit()
|
||||
else:
|
||||
logger.debug(f"Bundle '{human_name}' existiert bereits (ID: {bundle.id})")
|
||||
|
||||
# Vergleiche mit der aktuellsten Version
|
||||
latest_version = (session.query(BundleVersion)
|
||||
.filter_by(bundle_id=bundle.id)
|
||||
.order_by(BundleVersion.timestamp.desc())
|
||||
.first())
|
||||
|
||||
if latest_version is None or latest_version.version_hash != new_hash:
|
||||
if latest_version:
|
||||
if logger.isEnabledFor(logging.DEBUG):
|
||||
try:
|
||||
old_data = json.loads(latest_version.version_data)
|
||||
log_diff(old_data, relevant_data)
|
||||
except Exception as ex:
|
||||
logger.debug(f"Fehler beim Diff-Vergleich: {ex}")
|
||||
else:
|
||||
logger.info("Hashabweichung festgestellt – es gibt Änderungen in den Bundle-Daten.")
|
||||
else:
|
||||
logger.info("Keine vorherige Version gefunden – neues Bundle wird gespeichert.")
|
||||
new_version = BundleVersion(
|
||||
bundle_id=bundle.id,
|
||||
version_hash=new_hash,
|
||||
version_data=json.dumps(relevant_data, sort_keys=True, ensure_ascii=False)
|
||||
)
|
||||
session.add(new_version)
|
||||
session.commit()
|
||||
bundle.current_version_id = new_version.id
|
||||
session.commit()
|
||||
else:
|
||||
logger.info(f"Bundle '{human_name}' hat sich nicht geändert.")
|
||||
|
||||
# Verkaufszahlen extrahieren – hier wird angenommen, dass sie unter einem entsprechenden Schlüssel stehen
|
||||
bundles_sold = bundle_data.get("bundles_sold|decimal")
|
||||
if bundles_sold is None:
|
||||
bundles_sold = bundle_data.get("basic_data", {}).get("bundles_sold|decimal")
|
||||
if bundles_sold is not None:
|
||||
try:
|
||||
sales_value = float(bundles_sold)
|
||||
sales_entry = BundleSalesHistory(
|
||||
bundle_id=bundle.id,
|
||||
bundles_sold=sales_value
|
||||
)
|
||||
session.add(sales_entry)
|
||||
session.commit()
|
||||
logger.info(f"Verkaufszahlen für Bundle '{human_name}' aktualisiert: {sales_value}")
|
||||
except Exception as e:
|
||||
logger.error(f"Fehler beim Speichern der Verkaufszahlen für '{human_name}': {e}")
|
||||
else:
|
||||
logger.debug(f"Keine Verkaufszahlen für Bundle '{human_name}' gefunden.")
|
||||
|
||||
# ---------------------------
|
||||
# Extraktion der Bundle-Elemente
|
||||
# ---------------------------
|
||||
# Hier wird angenommen, dass in den Bundle-Daten unter "items" eine Liste der enthaltenen Produkte steht.
|
||||
items = bundle_data.get("items", [])
|
||||
if items:
|
||||
logger.info(f"Es wurden {len(items)} Elemente im Bundle '{human_name}' gefunden.")
|
||||
for item in items:
|
||||
title = item.get("title", "Unbekannt")
|
||||
category = item.get("category", "Unbekannt")
|
||||
details = json.dumps(item, sort_keys=True, ensure_ascii=False)
|
||||
# Prüfen, ob das Element bereits gespeichert wurde (z. B. anhand des Titels)
|
||||
existing_item = session.query(BundleItem).filter_by(bundle_id=bundle.id, title=title).first()
|
||||
if existing_item:
|
||||
logger.debug(f"Element '{title}' im Bundle '{human_name}' existiert bereits – Überspringe.")
|
||||
else:
|
||||
new_item = BundleItem(
|
||||
bundle_id=bundle.id,
|
||||
title=title,
|
||||
category=category,
|
||||
details=details
|
||||
)
|
||||
session.add(new_item)
|
||||
logger.debug(f"Neues Element '{title}' im Bundle '{human_name}' wird gespeichert.")
|
||||
session.commit()
|
||||
else:
|
||||
logger.debug(f"Keine Bundle-Elemente (items) im Bundle '{human_name}' gefunden.")
|
||||
|
||||
def get_bundle_urls(overview_url: str) -> list:
|
||||
"""
|
||||
Ruft die Übersichtsseite ab und extrahiert alle Bundle-URLs aus dem JSON-Datenblock im <script>-Tag 'landingPage-json-data'.
|
||||
"""
|
||||
logger.info(f"Rufe Übersichtsseite {overview_url} ab...")
|
||||
response = requests.get(overview_url)
|
||||
response.raise_for_status()
|
||||
soup = BeautifulSoup(response.text, "html.parser")
|
||||
bundle_urls = []
|
||||
landing_script = soup.find("script", {"id": "landingPage-json-data", "type": "application/json"})
|
||||
if landing_script:
|
||||
landing_data = json.loads(landing_script.string)
|
||||
logger.debug(f"Landing Page JSON (gekürzt): {str(landing_data)[:200]} ...")
|
||||
# Durchlaufe die Kategorien "books", "games" und "software"
|
||||
for category in ["books", "games", "software"]:
|
||||
cat_data = landing_data.get("data", {}).get(category, {})
|
||||
for section in cat_data.get("mosaic", []):
|
||||
for product in section.get("products", []):
|
||||
url = product.get("product_url", "")
|
||||
if url:
|
||||
full_url = requests.compat.urljoin(overview_url, url)
|
||||
bundle_urls.append(full_url)
|
||||
else:
|
||||
logger.warning("Kein JSON-Datenblock 'landingPage-json-data' auf der Übersichtsseite gefunden.")
|
||||
logger.info(f"Gefundene Bundle-URLs: {len(bundle_urls)}")
|
||||
return bundle_urls
|
||||
|
||||
def main():
|
||||
engine = create_engine('sqlite:///bundles.db')
|
||||
Base.metadata.create_all(engine)
|
||||
Session = sessionmaker(bind=engine)
|
||||
session = Session()
|
||||
|
||||
overview_url = "https://www.humblebundle.com/bundles"
|
||||
url = "https://www.humblebundle.com/some-bundle-url"
|
||||
parser = BundleParser(url, category="books")
|
||||
try:
|
||||
bundle_urls = get_bundle_urls(overview_url)
|
||||
if not bundle_urls:
|
||||
logger.error("Keine Bundle-URLs gefunden! Überprüfe den JSON-Datenblock oder den Selektor in get_bundle_urls().")
|
||||
return
|
||||
bundle_data = parser.get_relevant_bundle_data()
|
||||
logger.info(f"Erhaltene Bundle-Daten: {bundle_data}")
|
||||
items = parser.parse_items()
|
||||
logger.info(f"Gefundene Items: {items}")
|
||||
except Exception as e:
|
||||
logger.error(f"Fehler beim Abrufen der Übersichtsseite: {e}")
|
||||
return
|
||||
|
||||
# Für jede Bundle-URL verarbeiten
|
||||
for url in bundle_urls:
|
||||
logger.info(f"Verarbeite Bundle: {url}")
|
||||
try:
|
||||
process_bundle(session, url)
|
||||
except Exception as e:
|
||||
logger.error(f"Fehler beim Verarbeiten von {url}: {e}")
|
||||
logger.error(f"Fehler: {e}")
|
||||
|
||||
if __name__ == "__main__":
|
||||
main()
|
||||
|
|
|
|||
|
|
@ -0,0 +1,45 @@
|
|||
# bundle_parser.py
|
||||
|
||||
import requests
|
||||
import json
|
||||
from bs4 import BeautifulSoup
|
||||
import logging
|
||||
|
||||
logger = logging.getLogger(__name__)
|
||||
|
||||
class BundleParser:
|
||||
def __init__(self, url, category=None):
|
||||
self.url = url
|
||||
self.category = category
|
||||
|
||||
def fetch_data(self):
|
||||
logger.info(f"Rufe Bundle-Daten von {self.url} ab...")
|
||||
response = requests.get(self.url)
|
||||
response.raise_for_status()
|
||||
soup = BeautifulSoup(response.text, "html.parser")
|
||||
script_tag = soup.find("script", {"id": "webpack-bundle-page-data", "type": "application/json"})
|
||||
if not script_tag:
|
||||
logger.error("Kein JSON-Datenblock 'webpack-bundle-page-data' gefunden!")
|
||||
raise ValueError("Kein JSON-Datenblock gefunden!")
|
||||
data = json.loads(script_tag.string)
|
||||
logger.debug(f"Erhaltener JSON-Block (gekürzt): {str(data)[:200]} ...")
|
||||
return data
|
||||
|
||||
def get_relevant_bundle_data(self):
|
||||
data = self.fetch_data()
|
||||
return data.get("bundleData", {})
|
||||
|
||||
def parse_items(self):
|
||||
bundle_data = self.get_relevant_bundle_data()
|
||||
items = bundle_data.get("items", [])
|
||||
parsed_items = []
|
||||
for item in items:
|
||||
title = item.get("title", "Unbekannt")
|
||||
category = item.get("category", self.category if self.category else "Unbekannt")
|
||||
details = json.dumps(item, sort_keys=True, ensure_ascii=False)
|
||||
parsed_items.append({
|
||||
"title": title,
|
||||
"category": category,
|
||||
"details": details
|
||||
})
|
||||
return parsed_items
|
||||
Loading…
Reference in New Issue