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| 1 | +defmodule Algora.Admin.Migration do |
| 2 | + @moduledoc false |
| 3 | + import Ecto.Query |
| 4 | + |
| 5 | + alias Algora.Accounts.User |
| 6 | + alias Algora.Payments.Transaction |
| 7 | + alias Algora.Repo |
| 8 | + |
| 9 | + @balances_file ".local/db/balance-2025-02-13.json" |
| 10 | + |
| 11 | + def get_actual_balances(type) do |
| 12 | + with {:ok, content} <- File.read(@balances_file), |
| 13 | + {:ok, data} <- Jason.decode(content) do |
| 14 | + Enum.map(data[Atom.to_string(type)], fn %{"provider_login" => login, "balance" => balance} -> |
| 15 | + %{ |
| 16 | + provider_login: login, |
| 17 | + balance: Money.new!(:USD, Decimal.new(balance)) |
| 18 | + } |
| 19 | + end) |
| 20 | + else |
| 21 | + error -> raise "Failed to load balances: #{inspect(error)}" |
| 22 | + end |
| 23 | + end |
| 24 | + |
| 25 | + def get_balances(type) do |
| 26 | + get_balances() |
| 27 | + |> Enum.filter(&(&1.type == type)) |
| 28 | + |> Enum.reject(&(&1.provider_login in ["algora-io", "Uber4Coding"])) |
| 29 | + end |
| 30 | + |
| 31 | + def get_balances do |
| 32 | + user_txs = |
| 33 | + from t in Transaction, |
| 34 | + group_by: [t.user_id, t.type], |
| 35 | + select: %{ |
| 36 | + user_id: t.user_id, |
| 37 | + type: t.type, |
| 38 | + net_amount: sum(t.net_amount) |
| 39 | + } |
| 40 | + |
| 41 | + user_balances = |
| 42 | + from ut in subquery(user_txs), |
| 43 | + group_by: ut.user_id, |
| 44 | + select: %{ |
| 45 | + user_id: ut.user_id, |
| 46 | + balance: |
| 47 | + sum( |
| 48 | + fragment( |
| 49 | + """ |
| 50 | + CASE |
| 51 | + WHEN ? = 'credit' THEN ? |
| 52 | + WHEN ? = 'debit' THEN -? |
| 53 | + WHEN ? = 'charge' THEN ? |
| 54 | + WHEN ? = 'transfer' THEN -? |
| 55 | + ELSE ('USD', 0)::money_with_currency |
| 56 | + END |
| 57 | + """, |
| 58 | + ut.type, |
| 59 | + ut.net_amount, |
| 60 | + ut.type, |
| 61 | + ut.net_amount, |
| 62 | + ut.type, |
| 63 | + ut.net_amount, |
| 64 | + ut.type, |
| 65 | + ut.net_amount |
| 66 | + ) |
| 67 | + ) |
| 68 | + } |
| 69 | + |
| 70 | + query = |
| 71 | + from ub in subquery(user_balances), |
| 72 | + join: u in User, |
| 73 | + on: u.id == ub.user_id, |
| 74 | + where: ub.balance != fragment("('USD', 0)::money_with_currency"), |
| 75 | + order_by: [desc: u.type, desc: ub.balance, asc: u.provider_login], |
| 76 | + select: %{ |
| 77 | + type: u.type, |
| 78 | + provider_login: u.provider_login, |
| 79 | + balance: ub.balance |
| 80 | + } |
| 81 | + |
| 82 | + query |
| 83 | + |> Repo.all() |
| 84 | + |> Enum.map(fn |
| 85 | + user -> |
| 86 | + {currency, amount} = user.balance |
| 87 | + %{user | balance: Money.new!(currency, amount)} |
| 88 | + end) |
| 89 | + end |
| 90 | + |
| 91 | + def diff_balances do |
| 92 | + diff_balances(:individual) ++ diff_balances(:organization) |
| 93 | + end |
| 94 | + |
| 95 | + def diff_balances(type) do |
| 96 | + actual = Enum.map(get_actual_balances(type), &Map.take(&1, [:provider_login, :balance])) |
| 97 | + current = Enum.map(get_balances(type), &Map.take(&1, [:provider_login, :balance])) |
| 98 | + |
| 99 | + actual_map = Map.new(actual, &{&1.provider_login, &1.balance}) |
| 100 | + current_map = Map.new(current, &{&1.provider_login, &1.balance}) |
| 101 | + |
| 102 | + all_logins = |
| 103 | + MapSet.union( |
| 104 | + MapSet.new(Map.keys(actual_map)), |
| 105 | + MapSet.new(Map.keys(current_map)) |
| 106 | + ) |
| 107 | + |
| 108 | + differences = |
| 109 | + Enum.reduce(all_logins, [], fn login, acc -> |
| 110 | + actual_balance = Map.get(actual_map, login) |
| 111 | + current_balance = Map.get(current_map, login) |
| 112 | + |
| 113 | + cond do |
| 114 | + actual_balance == current_balance -> |
| 115 | + acc |
| 116 | + |
| 117 | + actual_balance == nil -> |
| 118 | + [{:extra_in_current, login, current_balance} | acc] |
| 119 | + |
| 120 | + current_balance == nil -> |
| 121 | + [{:missing_in_current, login, actual_balance} | acc] |
| 122 | + |
| 123 | + true -> |
| 124 | + [{:different, login, actual_balance, current_balance} | acc] |
| 125 | + end |
| 126 | + end) |
| 127 | + |
| 128 | + Enum.sort_by(differences, &elem(&1, 1)) |
| 129 | + end |
| 130 | +end |
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