All backend stuff lives in backend folder

4 files changed, 0 insertions, 360 deletions

diff --git a/backend/src/utils/calculate_budgets_accrual.rs b/backend/src/utils/calculate_budgets_accrual.rs
deleted file mode 100644
index f14260d..0000000
--- a/backend/src/utils/calculate_budgets_accrual.rs
+++ /dev/null
@@ -1,159 +0,0 @@
-use crate::models::{budget_update::BudgetUpdate, category::Category, date_time_utc::DateTimeUtc};
-
-pub fn calculate_budgets_accrual(category: &Category, budget_updates: &[BudgetUpdate]) -> i64 {
-    let mut budget_updates = budget_updates
-        .iter()
-        .filter(|bu| bu.category_id == category.id)
-        .collect::<Vec<&BudgetUpdate>>();
-    budget_updates.sort_by_key(|bu| bu.date);
-    budget_updates.reverse();
-
-    let mut budgets_accrual = 0.0_f64;
-    let mut calculated_back_to_date = DateTimeUtc::now();
-
-    for budget_update in budget_updates {
-        let days_on_this_budget = calculated_back_to_date.day_diff(&budget_update.date);
-        if days_on_this_budget == 0_u32 {
-            continue;
-        }
-        let budget_per_day = budget_update.new_budget as f64 / budget_update.new_period as f64;
-        budgets_accrual += days_on_this_budget as f64 * budget_per_day;
-        calculated_back_to_date = budget_update.date;
-    }
-
-    budgets_accrual.floor() as i64
-}
-
-#[cfg(test)]
-mod test {
-    use chrono::{Days, Timelike, Utc};
-
-    use crate::models::{
-        budget_update::BudgetUpdate, category::Category, date_time_utc::DateTimeUtc,
-    };
-
-    use super::calculate_budgets_accrual;
-
-    #[test]
-    fn when_no_budget_updates_then_return_zero() {
-        let category = Category {
-            id: 0,
-            name: String::from("Groceries"),
-        };
-        let budget_updates = [];
-
-        let result = calculate_budgets_accrual(&category, &budget_updates);
-
-        assert_eq!(result, 0_i64);
-    }
-
-    #[test]
-    fn when_one_budget_update_for_another_category_then_return_zero() {
-        let category = Category {
-            id: 0,
-            name: String::from("Groceries"),
-        };
-        let budget_updates = [BudgetUpdate {
-            id: 0,
-            category_id: 1,
-            date: DateTimeUtc::now(),
-            new_budget: 100,
-            new_period: 1,
-        }];
-
-        let result = calculate_budgets_accrual(&category, &budget_updates);
-
-        assert_eq!(result, 0_i64);
-    }
-
-    #[test]
-    fn when_one_budget_update_then_return_quantity_times_days_in_past() {
-        let category = Category {
-            id: 0,
-            name: String::from("Groceries"),
-        };
-        let budget_updates = [BudgetUpdate {
-            id: 0,
-            category_id: 0,
-            date: DateTimeUtc::new(Utc::now().checked_sub_days(Days::new(120)).unwrap()),
-            new_budget: 100,
-            new_period: 1,
-        }];
-
-        let result = calculate_budgets_accrual(&category, &budget_updates);
-
-        assert_eq!(result, 12_000);
-    }
-
-    #[test]
-    fn when_two_budget_updates_then_calculates_as_expected() {
-        let category = Category {
-            id: 0,
-            name: String::from("Groceries"),
-        };
-        let budget_updates = [
-            BudgetUpdate {
-                id: 0,
-                category_id: 0,
-                date: DateTimeUtc::new(Utc::now().checked_sub_days(Days::new(60)).unwrap()),
-                new_budget: 200,
-                new_period: 1,
-            },
-            BudgetUpdate {
-                id: 0,
-                category_id: 0,
-                date: DateTimeUtc::new(Utc::now().checked_sub_days(Days::new(120)).unwrap()),
-                new_budget: 100,
-                new_period: 1,
-            },
-        ];
-
-        let result = calculate_budgets_accrual(&category, &budget_updates);
-
-        assert_eq!(result, 18_000);
-    }
-
-    #[test]
-    fn when_two_budget_updates_on_same_day_then_uses_latest_only() {
-        let category = Category {
-            id: 0,
-            name: String::from("Groceries"),
-        };
-        let budget_updates = [
-            BudgetUpdate {
-                id: 0,
-                category_id: 0,
-                date: DateTimeUtc::new(
-                    Utc::now()
-                        .checked_sub_days(Days::new(120))
-                        .unwrap()
-                        .with_hour(13)
-                        .unwrap(),
-                ),
-                new_budget: 200,
-                new_period: 1,
-            },
-            BudgetUpdate {
-                id: 0,
-                category_id: 0,
-                date: DateTimeUtc::new(
-                    Utc::now()
-                        .checked_sub_days(Days::new(120))
-                        .unwrap()
-                        .with_hour(12)
-                        .unwrap(),
-                ),
-                new_budget: 100,
-                new_period: 1,
-            },
-        ];
-        let mut budget_updates_reversed = budget_updates.clone();
-        budget_updates_reversed.reverse();
-
-        let result_leftways = calculate_budgets_accrual(&category, &budget_updates);
-        let result_rightways = calculate_budgets_accrual(&category, &budget_updates_reversed);
-
-        assert_eq!(result_leftways, 24_000);
-        assert_eq!(result_rightways, 24_000);
-    }
-}
diff --git a/backend/src/utils/calculate_category_balance.rs b/backend/src/utils/calculate_category_balance.rs
deleted file mode 100644
index 3c1c62f..0000000
--- a/backend/src/utils/calculate_category_balance.rs
+++ /dev/null
@@ -1,141 +0,0 @@
-use crate::models::{budget_update::BudgetUpdate, category::Category};
-
-use super::{calculate_budgets_accrual, find_by_id_or};
-
-pub fn calculate_category_balance(
-    category: &Category,
-    transaction_sums: &[(i32, Option<i64>)],
-    category_transfer_from_sums: &[(i32, Option<i64>)],
-    category_transfer_to_sums: &[(i32, Option<i64>)],
-    budget_updates: &[BudgetUpdate],
-) -> i64 {
-    let transaction_sum = find_by_id_or(transaction_sums, category.id, 0);
-    let category_transfer_from_sum = find_by_id_or(category_transfer_from_sums, category.id, 0);
-    let category_transfer_to_sum = find_by_id_or(category_transfer_to_sums, category.id, 0);
-    let budget_accruals_sum = calculate_budgets_accrual(category, budget_updates);
-
-    transaction_sum + budget_accruals_sum + category_transfer_to_sum - category_transfer_from_sum
-}
-
-#[cfg(test)]
-mod test {
-    use chrono::{Days, Utc};
-
-    use crate::{
-        models::{budget_update::BudgetUpdate, category::Category, date_time_utc::DateTimeUtc},
-        utils::calculate_category_balance,
-    };
-
-    #[test]
-    fn when_no_data_then_returns_zero() {
-        let category = Category {
-            id: 0,
-            name: String::new(),
-        };
-
-        let result = calculate_category_balance(&category, &[], &[], &[], &[]);
-
-        assert_eq!(result, 0_i64);
-    }
-
-    #[test]
-    fn when_data_only_for_another_category_then_returns_zero() {
-        let category = Category {
-            id: 0,
-            name: String::new(),
-        };
-        let transaction_sums = [(1, Some(100))];
-        let category_transfer_from_sums = [(1, Some(91))];
-        let category_transfer_to_sums = [(2, Some(79))];
-        let budget_updates = [BudgetUpdate {
-            id: 0,
-            category_id: 1,
-            date: DateTimeUtc::new(Utc::now().checked_sub_days(Days::new(120)).unwrap()),
-            new_budget: 77,
-            new_period: 1,
-        }];
-
-        let result = calculate_category_balance(
-            &category,
-            &transaction_sums,
-            &category_transfer_from_sums,
-            &category_transfer_to_sums,
-            &budget_updates,
-        );
-
-        assert_eq!(result, 0_i64);
-    }
-
-    #[test]
-    fn when_transaction_sum_is_none_then_returns_zero() {
-        let category = Category {
-            id: 0,
-            name: String::new(),
-        };
-        let transaction_sums = [(0, None)];
-        let category_transfer_from_sums = [];
-        let category_transfer_to_sums = [];
-        let budget_updates = [];
-
-        let result = calculate_category_balance(
-            &category,
-            &transaction_sums,
-            &category_transfer_from_sums,
-            &category_transfer_to_sums,
-            &budget_updates,
-        );
-
-        assert_eq!(result, 0_i64);
-    }
-
-    #[test]
-    fn when_category_transfers_are_none_then_returns_zero() {
-        let category = Category {
-            id: 0,
-            name: String::new(),
-        };
-        let transaction_sums = [];
-        let category_transfer_from_sums = [(0, None)];
-        let category_transfer_to_sums = [(0, None)];
-        let budget_updates = [];
-
-        let result = calculate_category_balance(
-            &category,
-            &transaction_sums,
-            &category_transfer_from_sums,
-            &category_transfer_to_sums,
-            &budget_updates,
-        );
-
-        assert_eq!(result, 0_i64);
-    }
-
-    #[test]
-    fn when_some_data_then_calculates_as_expected() {
-        let category = Category {
-            id: 0,
-            name: String::new(),
-        };
-        let transaction_sums = [(0, Some(100))];
-        let category_transfer_from_sums = [(0, Some(91))];
-        let category_transfer_to_sums = [(0, Some(79))];
-        let budget_updates = [BudgetUpdate {
-            id: 0,
-            category_id: 0,
-            date: DateTimeUtc::new(Utc::now().checked_sub_days(Days::new(120)).unwrap()),
-            new_budget: 77,
-            new_period: 1,
-        }];
-
-        let result = calculate_category_balance(
-            &category,
-            &transaction_sums,
-            &category_transfer_from_sums,
-            &category_transfer_to_sums,
-            &budget_updates,
-        );
-
-        let expected_result = 100 + (-91) + 79 + 77 * 120;
-        assert_eq!(result, expected_result);
-    }
-}
diff --git a/backend/src/utils/find_by_id_or.rs b/backend/src/utils/find_by_id_or.rs
deleted file mode 100644
index f5add30..0000000
--- a/backend/src/utils/find_by_id_or.rs
+++ /dev/null
@@ -1,53 +0,0 @@
-pub fn find_by_id_or<Id: PartialEq, Val: Copy>(
-    arr: &[(Id, Option<Val>)],
-    id: Id,
-    default: Val,
-) -> Val {
-    arr.iter()
-        .find(|(elem_id, _)| *elem_id == id)
-        .map_or(default, |row| match row {
-            (_, Some(quantity)) => *quantity,
-            (_, _) => default,
-        })
-}
-
-#[cfg(test)]
-mod test {
-    use super::find_by_id_or;
-
-    #[test]
-    fn when_no_elements_then_return_default() {
-        let arr = [];
-
-        let result = find_by_id_or(&arr, 1, 42);
-
-        assert_eq!(result, 42);
-    }
-
-    #[test]
-    fn when_id_not_in_elements_then_return_default() {
-        let arr = [(0, Some(100)), (2, Some(200))];
-
-        let result = find_by_id_or(&arr, 1, 42);
-
-        assert_eq!(result, 42);
-    }
-
-    #[test]
-    fn when_value_is_none_then_return_default() {
-        let arr = [(1, None)];
-
-        let result = find_by_id_or(&arr, 1, 42);
-
-        assert_eq!(result, 42);
-    }
-
-    #[test]
-    fn when_value_is_some_then_return_value() {
-        let arr = [(1, Some(67))];
-
-        let result = find_by_id_or(&arr, 1, 42);
-
-        assert_eq!(result, 67);
-    }
-}
diff --git a/backend/src/utils/mod.rs b/backend/src/utils/mod.rs
deleted file mode 100644
index 84a27af..0000000
--- a/backend/src/utils/mod.rs
+++ /dev/null
@@ -1,7 +0,0 @@
-mod calculate_budgets_accrual;
-mod calculate_category_balance;
-mod find_by_id_or;
-
-pub use calculate_budgets_accrual::calculate_budgets_accrual;
-pub use calculate_category_balance::calculate_category_balance;
-pub use find_by_id_or::find_by_id_or;