Egor fureunoir Gorbunov
a33be30098
Fixes: 1) Corrected `ForeignKey` type assertions across models; 2) Resolved typos and formatting inconsistencies in `.env` and README; 3) Fixed explicit boolean checks in user manager methods. Extra: Updated type hints in multiple models, serializers, and views.
218 lines
7.8 KiB
Python
218 lines
7.8 KiB
Python
import os
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import random
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import shutil
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import uuid
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from datetime import date, timedelta
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from time import sleep
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import requests
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from celery.app import shared_task
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from celery.utils.log import get_task_logger
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from constance import config
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from django.core.cache import cache
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from core.elasticsearch import populate_index
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from core.models import Product, Promotion
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from core.utils.caching import set_default_cache
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from core.vendors import delete_stale
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from evibes.settings import MEDIA_ROOT
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logger = get_task_logger(__name__)
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@shared_task
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def update_products_task():
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"""
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Run a background task to update product data and manage stale products.
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This function checks if the update task is already running using a cache-based
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flag. If the task is not running, it initiates the update process, which
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includes invoking the `update_stock` method of vendor classes and removing
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stale products. Finally, it clears the flag in the cache.
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Write integrations with your vendors' APIs into core/vendors/<vendor_name>.py and use it here :)
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:return: A tuple consisting of a status boolean and a message string
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:rtype: tuple[bool, str]
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"""
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update_products_task_running = cache.get("update_products_task_running", False)
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if not update_products_task_running:
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cache.set("update_products_task_running", True, 86400)
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populate_index()
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vendors_classes = []
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for vendor_class in vendors_classes:
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vendor = vendor_class()
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try:
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vendor.update_stock()
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except Exception as e:
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logger.warning(f"Skipping {vendor_class} due to error: {e!s}")
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delete_stale()
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populate_index()
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cache.delete("update_products_task_running")
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return True, "Success"
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@shared_task
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def update_orderproducts_task():
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"""
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Updates the statuses of order products for all vendors listed in the
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`vendors_classes`. Each vendor class in the `vendors_classes` list is
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instantiated, and the `update_order_products_statuses` method of the
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respective vendor instance is executed to handle the update process.
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Write integrations with your vendors' APIs into core/vendors/<vendor_name>.py and use it here :)
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:return: A tuple containing a boolean indicating success and a string
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message confirming the successful execution of the task.
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:rtype: Tuple[bool, str]
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"""
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vendors_classes = []
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for vendor_class in vendors_classes:
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vendor = vendor_class()
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vendor.update_order_products_statuses()
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return True, "Success"
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@shared_task
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def set_default_caches_task():
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"""
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Task to set default caches in the application's memory.
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This task is designed to configure and set up default caches that are used
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within the application framework.
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:return: A tuple containing a boolean indicating success and a message
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:rtype: tuple[bool, str]
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"""
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set_default_cache()
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return True, "Success"
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@shared_task
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def remove_stale_product_images():
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"""
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Removes stale product images from the products directory by identifying directories
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whose names do not match any UUIDs currently present in the database.
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The task scans the product images directory to locate subdirectories named after
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product UUIDs. It verifies whether each UUID is part of the database's current
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product records. If a directory's UUID is not found in the database, it deletes
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the directory, as it is considered stale. This helps in maintaining clean storage
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and removing unused image data.
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:raises ValueError: If a directory name is not a valid UUID.
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:raises Exception: If an error occurs while attempting to delete a stale directory.
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:return: None
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"""
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products_dir = os.path.join(MEDIA_ROOT, "products")
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if not os.path.isdir(products_dir):
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logger.info("The products directory does not exist: %s", products_dir)
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return
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# Load all current product UUIDs into a set.
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# This query returns all product UUIDs (as strings or UUID objects).
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current_product_uuids = set(Product.objects.values_list("uuid", flat=True))
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logger.info("Loaded %d product UUIDs from the database.", len(current_product_uuids))
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# Iterate through all subdirectories in the products folder.
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for entry in os.listdir(products_dir):
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entry_path = os.path.join(products_dir, entry)
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if os.path.isdir(entry_path):
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try:
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# Validate that the directory name is a proper UUID.
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product_uuid = uuid.UUID(entry)
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except ValueError:
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logger.debug("Skipping directory with non-UUID name: %s", entry)
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continue
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# Check if the UUID is in the set of current product UUIDs.
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if product_uuid not in current_product_uuids:
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try:
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shutil.rmtree(entry_path)
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logger.info("Removed stale product images directory: %s", entry_path)
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except Exception as e:
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logger.error("Error removing directory %s: %s", entry_path, e)
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@shared_task
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def process_promotions() -> tuple[bool, str]:
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"""
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Processes and updates promotions based on holiday data or default settings.
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This task fetches holiday information for the next four days from the Abstract API.
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If a matching holiday is found, it creates a promotion associated with the holiday
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name. If no holiday is detected, it creates a default "Special Offers" promotion.
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A random discount percentage is applied to the selected products.
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Promotions are created only if there are at least 48 eligible products.
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All existing promotions are deleted before creating new ones.
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:raises HTTPError: If the API request to the Abstract API fails with an HTTP error.
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:raises Exception: If any general error occurs during API communication or data processing.
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:return: A tuple where the first element is a boolean indicating success, and the second
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element is a message describing the operation's outcome.
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"""
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if not config.ABSTRACT_API_KEY or config.ABSTRACT_API_KEY == "example key":
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return False, "Abstract features disabled."
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Promotion.objects.all().update(is_active=False)
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holiday_data = None
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for day_offset in range(4):
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checked_date = date.today() + timedelta(days=day_offset)
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try:
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response = requests.get(
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f"https://holidays.abstractapi.com/v1/?api_key={config.ABSTRACT_API_KEY}&country=GB&"
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f"month={checked_date.month}&day={checked_date.day}"
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)
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response.raise_for_status()
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except Exception as e:
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logger.warning(f"Couldn't fetch holiday data for {checked_date}: {e!s}")
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return False, f"Couldn't fetch holiday data for {checked_date}: {e!s}"
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holidays = response.json()
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if holidays:
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holiday_data = holidays[0]
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break
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sleep(1)
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if holiday_data:
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holiday_name = holiday_data["name"]
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promotion_name = f"{holiday_name} Sale"
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discount_percent = random.randint(10, 15)
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else:
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promotion_name = "Special Offers"
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discount_percent = random.randint(10, 15)
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eligible_products = Product.objects.filter(
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is_active=True,
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stocks__price__gt=0,
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)
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if eligible_products.count() < 48:
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return False, "Not enough products to choose from [< 48]."
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selected_products: list = []
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while len(selected_products) < 48:
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product = eligible_products.order_by("?").first()
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selected_products.append(product)
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promotion = Promotion.objects.update_or_create(
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name=promotion_name, defaults={"discount_percent": discount_percent, "is_active": True}
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)[0]
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for product in selected_products:
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promotion.products.add(product)
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return True, "Promotions updated successfully."
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