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use budgeting_app_core::models::{
account::Account, budget_update::BudgetUpdate, category::Category,
category_transfer::CategoryTransfer, date_time_utc::DateTimeUtc, transaction::Transaction,
transaction_categorisation::TransactionCategorisation,
};
use core::panic;
use std::hash::{DefaultHasher, Hash, Hasher};
use crate::models::{actualbudget_account::ActualbudgetAccount, actualbudget_category::ActualbudgetCategory, actualbudget_date::ActualbudgetDate, actualbudget_transaction::ActualbudgetTransaction, actualbudget_zero_budget::ActualbudgetZeroBudget};
pub fn transform_date(actualbudget_date: &ActualbudgetDate) -> Result<DateTimeUtc, String> {
DateTimeUtc::from_date_str(&actualbudget_date.to_iso()).map_err(|e| e.to_string())
}
pub fn transform_accounts(
actualbudget_accounts: &[ActualbudgetAccount],
first_transaction_date: &DateTimeUtc,
) -> Vec<Account> {
let mut accounts = Vec::<Account>::new();
for account in actualbudget_accounts {
accounts.push(transform_account(account, first_transaction_date));
}
accounts
}
fn transform_account(
actualbudget_account: &ActualbudgetAccount,
opening_date: &DateTimeUtc,
) -> Account {
Account {
id: transform_id(&actualbudget_account.id.clone()),
name: actualbudget_account.name.clone(),
opening_balance: 0,
opening_date: opening_date.clone(),
}
}
pub fn transform_categories(
actualbudget_categories: &[ActualbudgetCategory],
) -> Vec<Category> {
let mut categories = Vec::<Category>::new();
for actualbudget_category in actualbudget_categories {
categories.push(Category {
id: transform_id(&actualbudget_category.id.clone()),
name: actualbudget_category.name.clone(),
})
}
categories
}
fn transform_id(actualbudget_id: &str) -> i32 {
let mut hasher = DefaultHasher::new();
actualbudget_id.hash(&mut hasher);
(hasher.finish() % std::convert::TryInto::<u64>::try_into(i32::MAX).unwrap())
.try_into()
.unwrap()
}
pub fn transform_budget_updates(
actualbudget_zero_budgets: &[ActualbudgetZeroBudget],
) -> Result<Vec<BudgetUpdate>, String> {
let mut budget_updates = Vec::<BudgetUpdate>::new();
for zero_budget in actualbudget_zero_budgets {
let first_zero_budget_in_category = get_first_zero_budget_in_category(
actualbudget_zero_budgets,
&zero_budget.category_id.clone(),
);
if first_zero_budget_in_category.is_some_and(|zb| zb.id == zero_budget.id) {
continue;
}
budget_updates.push(BudgetUpdate {
id: transform_id(&zero_budget.id.clone()),
category_id: transform_id(&zero_budget.category_id.clone()),
date: transform_date(&zero_budget.month.clone()).map_err(|e| e.to_string())?,
new_budget: zero_budget.amount.try_into().unwrap(),
new_period: 30,
})
}
Ok(budget_updates)
}
fn get_first_zero_budget_in_category(
actualbudget_zero_budgets: &[ActualbudgetZeroBudget],
actualbudget_category_id: &str,
) -> Option<ActualbudgetZeroBudget> {
let mut category_zero_budgets = actualbudget_zero_budgets.to_vec();
category_zero_budgets.retain(|zb| zb.category_id == actualbudget_category_id);
category_zero_budgets
.iter()
.min_by_key(|zb| zb.month.clone())
.cloned()
}
pub fn transform_transactions(
actualbudget_transactions: &[ActualbudgetTransaction],
actualbudget_category_transfers_account: &ActualbudgetAccount,
) -> Result<(Vec<Transaction>, Vec<TransactionCategorisation>), String> {
let mut transactions = Vec::<Transaction>::new();
let mut transaction_categorisations = Vec::<TransactionCategorisation>::new();
let mut actualbudget_transactions = actualbudget_transactions.to_vec();
actualbudget_transactions
.retain(|t| t.category_id.clone() != actualbudget_category_transfers_account.id.clone());
let mut parent_actualbudget_transactions = actualbudget_transactions.to_vec();
parent_actualbudget_transactions.retain(|t| t.is_parent);
let mut child_actualbudget_transactions = actualbudget_transactions.to_vec();
child_actualbudget_transactions.retain(|t| t.is_child);
let mut atomic_actualbudget_transactions = actualbudget_transactions.to_vec();
atomic_actualbudget_transactions.retain(|t| !t.is_parent && !t.is_child);
for atomic_actualbudget_transaction in atomic_actualbudget_transactions {
let transaction_id = transform_id(&atomic_actualbudget_transaction.id);
transactions.push(Transaction {
id: transaction_id,
description: atomic_actualbudget_transaction.notes,
payee: atomic_actualbudget_transaction.payee,
quantity: atomic_actualbudget_transaction.amount.try_into().unwrap(),
date: transform_date(&atomic_actualbudget_transaction.date).map_err(|e| e.to_string())?,
account_id: transform_id(&atomic_actualbudget_transaction.account_id),
});
transaction_categorisations.push(TransactionCategorisation {
id: transaction_id,
description: String::new(),
quantity: atomic_actualbudget_transaction.amount.try_into().unwrap(),
transaction_id,
category_id: transform_id(&atomic_actualbudget_transaction.category_id),
});
}
for parent_actualbudget_transaction in parent_actualbudget_transactions {
let mut child_actualbudget_transactions = child_actualbudget_transactions.to_vec();
child_actualbudget_transactions.retain(|t| {
t.parent_id
.clone()
.is_some_and(|parent_id| parent_id == parent_actualbudget_transaction.id.clone())
});
let transaction_id = transform_id(&parent_actualbudget_transaction.id);
transactions.push(Transaction {
id: transaction_id,
description: parent_actualbudget_transaction.notes,
payee: parent_actualbudget_transaction.payee,
quantity: parent_actualbudget_transaction.amount.try_into().unwrap(),
date: transform_date(&parent_actualbudget_transaction.date).map_err(|e| e.to_string())?,
account_id: transform_id(&parent_actualbudget_transaction.account_id),
});
for child_actualbudget_transaction in child_actualbudget_transactions {
transaction_categorisations.push(TransactionCategorisation {
id: transform_id(&child_actualbudget_transaction.id),
description: child_actualbudget_transaction.notes,
quantity: child_actualbudget_transaction.amount.try_into().unwrap(),
transaction_id,
category_id: transform_id(&child_actualbudget_transaction.category_id),
});
}
}
Ok((transactions, transaction_categorisations))
}
pub fn transform_category_transfers(
actualbudget_transactions: &[ActualbudgetTransaction],
actualbudget_category_transfers_account: &ActualbudgetAccount,
) -> Vec<CategoryTransfer> {
let mut category_transfers = Vec::<CategoryTransfer>::new();
let mut actualbudget_category_transfers = actualbudget_transactions.to_vec();
actualbudget_category_transfers
.retain(|t| t.category_id.clone() == actualbudget_category_transfers_account.id.clone());
let mut actualbudget_parent_category_transfers = actualbudget_category_transfers.to_vec();
actualbudget_parent_category_transfers.retain(|t| t.is_parent);
let mut actualbudget_child_category_transfers = actualbudget_category_transfers.to_vec();
actualbudget_child_category_transfers.retain(|t| t.is_child);
for actualbudget_parent_category_transfer in actualbudget_parent_category_transfers {
let mut actualbudget_child_category_transfers =
actualbudget_child_category_transfers.to_vec();
actualbudget_child_category_transfers.retain(|t| {
t.parent_id
.clone()
.is_some_and(|parent_id| parent_id == actualbudget_parent_category_transfer.id)
});
if actualbudget_child_category_transfers.len() != 2 {
panic!("Category transfers should always have exactly two children.");
}
let category_1 = actualbudget_child_category_transfers[0].clone();
let category_2 = actualbudget_child_category_transfers[1].clone();
// To avoid duplicates
if category_1.amount >= 0 {
continue;
}
if actualbudget_child_category_transfers[0].amount
!= -actualbudget_child_category_transfers[1].amount
{
panic!("Category transfer children should sum to zero.");
}
category_transfers.push(CategoryTransfer {
id: transform_id(&actualbudget_parent_category_transfer.id),
description: actualbudget_parent_category_transfer.notes,
quantity: actualbudget_child_category_transfers[0]
.amount
.try_into()
.unwrap(),
from_category_id: transform_id(&category_1.id),
to_category_id: transform_id(&category_2.id),
});
}
category_transfers
}
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