def buy_solution(problem_name, seller_name):
current_problem = None
error = None
for name, problem in parsed_problem_file:
if name == problem_name:
current_problem = lg.Problem.fromString(problem)
break
if not current_problem:
return render_template(
"error_page.html", logged_in_user=current_user, error="You entered a URL for a non-existent problem."
)
username = current_user.name
user_stats = generate_user_stats(username, user_pool)
categorized_problems = categorize_problems(user_stats, parsed_problem_file)
if not problem_name in (name for name, _ in categorized_problems["to_solve"]):
return render_template(
"error_page.html",
logged_in_user=current_user,
error="You have either solved the problem or you are not allowed to access it yet.",
)
all_commodities = rc.list_all_commodities(User.user_database, user_pool)
found = False
for prob, user, price_requested in all_commodities:
if prob == problem_name and user == seller_name:
found = True
break
if not found:
error = "The seller is not selling the solution to this problem."
return render_template("error_page.html", logged_in_user=current_user, error=error)
if get_user_points(username, user_pool) < price_requested:
error = "You don't have enough points to buy the solution to this problem."
return render_template("error_page.html", logged_in_user=current_user, error=error)
rc.pay_user(seller_name, price_requested, user_pool)
rc.charge_user(current_user.name, price_requested, user_pool)
result, points = rc.submit_solution(current_problem.answer, current_problem.name, problem_pool)
if not result:
error = "Something really bad happened."
return render_template("error_page.html", logged_in_user=current_user, error=error)
else:
rc.update_user_solution(points, current_problem.name, current_user.name, user_pool)
rc.add_to_purchases(current_user.name, current_problem.name, user_pool)
log_purchase(current_user.name, seller_name, current_problem.name, price_requested, points)
message = "You bought the solution of {0} from {1} at the price of {2} points. Check the stats page for the solution".format(
current_problem.display_name.lower(), get_display_name(seller_name), price_requested
)
return render_template("success_page.html", logged_in_user=current_user, message=message)
def list_solutions_for_sale(problem_name):
current_problem = None
error = None
for name, problem in parsed_problem_file:
if name == problem_name:
current_problem = lg.Problem.fromString(problem)
break
if not current_problem:
return render_template(
"error_page.html", logged_in_user=current_user, error="You entered a URL for a non-existent problem."
)
username = current_user.name
user_stats = generate_user_stats(username, user_pool)
categorized_problems = categorize_problems(user_stats, parsed_problem_file)
if not problem_name in (name for name, _ in categorized_problems["to_solve"]):
return render_template(
"error_page.html",
logged_in_user=current_user,
error="You have either already solved the problem, or you are not allowed to solve it.",
)
all_commodities = rc.list_all_commodities(User.user_database, user_pool)
problem_commodities = [
(prob, user, get_display_name(user), price)
for (prob, user, price) in all_commodities
if prob == current_problem.name
]
return render_template(
"list_problems.html",
logged_in_user=current_user,
current_problem=current_problem,
commodities=problem_commodities,
)