# Copyright (c) 2021, Frappe Technologies Pvt. Ltd. and Contributors
# License: GNU General Public License v3. See license.txt
import frappe

from erpnext.e_commerce.doctype.e_commerce_settings.e_commerce_settings import (
	get_shopping_cart_settings,
)
from erpnext.e_commerce.shopping_cart.cart import _set_price_list
from erpnext.utilities.product import get_price


def get_context(context):
	is_guest = frappe.session.user == "Guest"

	settings = get_shopping_cart_settings()
	items = get_wishlist_items() if not is_guest else []
	selling_price_list = _set_price_list(settings) if not is_guest else None

	items = set_stock_price_details(items, settings, selling_price_list)

	context.body_class = "product-page"
	context.items = items
	context.settings = settings
	context.no_cache = 1

def get_stock_availability(item_code, warehouse):
	stock_qty = frappe.utils.flt(
		frappe.db.get_value("Bin",
			{
				"item_code": item_code,
				"warehouse": warehouse
			},
			"actual_qty")
	)
	return bool(stock_qty)

def get_wishlist_items():
	if not frappe.db.exists("Wishlist", frappe.session.user):
		return []

	return frappe.db.get_all(
		"Wishlist Item",
		filters={
			"parent": frappe.session.user
		},
		fields=[
			"web_item_name", "item_code", "item_name",
			"website_item", "warehouse",
			"image", "item_group", "route"
		])

def set_stock_price_details(items, settings, selling_price_list):
	for item in items:
		if settings.show_stock_availability:
			item.available = get_stock_availability(item.item_code, item.get("warehouse"))

		price_details = get_price(
			item.item_code,
			selling_price_list,
			settings.default_customer_group,
			settings.company
		)

		if price_details:
			item.formatted_price = price_details.get('formatted_price')
			item.formatted_mrp = price_details.get('formatted_mrp')
			if item.formatted_mrp:
				item.discount = price_details.get('formatted_discount_percent') or \
					price_details.get('formatted_discount_rate')

	return items