All backend stuff lives in backend folder

21 files changed, 261 insertions, 0 deletions

diff --git a/backend/app/src/queries/accounts/get_all.rs b/backend/app/src/queries/accounts/get_all.rs
new file mode 100644
index 0000000..12941ac
--- /dev/null
+++ b/backend/app/src/queries/accounts/get_all.rs
@@ -0,0 +1,7 @@
+use diesel::{result::Error, QueryDsl, RunQueryDsl, SelectableHelper, SqliteConnection};
+
+use crate::{models::account::Account, schema::accounts::dsl::accounts};
+
+pub fn get_all_accounts(connection: &mut SqliteConnection) -> Result<Vec<Account>, Error> {
+    accounts.select(Account::as_select()).load(connection)
+}
diff --git a/backend/app/src/queries/accounts/insert.rs b/backend/app/src/queries/accounts/insert.rs
new file mode 100644
index 0000000..c20cf60
--- /dev/null
+++ b/backend/app/src/queries/accounts/insert.rs
@@ -0,0 +1,14 @@
+use diesel::prelude::*;
+use diesel::result::Error;
+
+use crate::models::account::Account;
+use crate::schema::accounts::dsl::accounts as accounts_table;
+
+pub fn insert_account(
+    accounts: &[Account],
+    connection: &mut SqliteConnection,
+) -> Result<usize, Error> {
+    diesel::insert_into(accounts_table)
+        .values(accounts)
+        .execute(connection)
+}
diff --git a/backend/app/src/queries/accounts/mod.rs b/backend/app/src/queries/accounts/mod.rs
new file mode 100644
index 0000000..94fa360
--- /dev/null
+++ b/backend/app/src/queries/accounts/mod.rs
@@ -0,0 +1,5 @@
+mod get_all;
+mod insert;
+
+pub use get_all::get_all_accounts;
+pub use insert::insert_account;
diff --git a/backend/app/src/queries/budget_updates/get_all.rs b/backend/app/src/queries/budget_updates/get_all.rs
new file mode 100644
index 0000000..97f2f2f
--- /dev/null
+++ b/backend/app/src/queries/budget_updates/get_all.rs
@@ -0,0 +1,13 @@
+use crate::{
+    models::budget_update::BudgetUpdate,
+    schema::budget_updates::dsl::budget_updates as budget_updates_table,
+};
+use diesel::{result::Error, QueryDsl, RunQueryDsl, SelectableHelper, SqliteConnection};
+
+pub fn get_all_budget_updates(
+    connection: &mut SqliteConnection,
+) -> Result<Vec<BudgetUpdate>, Error> {
+    budget_updates_table
+        .select(BudgetUpdate::as_select())
+        .load::<BudgetUpdate>(connection)
+}
diff --git a/backend/app/src/queries/budget_updates/get_first_with_date.rs b/backend/app/src/queries/budget_updates/get_first_with_date.rs
new file mode 100644
index 0000000..a2824be
--- /dev/null
+++ b/backend/app/src/queries/budget_updates/get_first_with_date.rs
@@ -0,0 +1,19 @@
+use crate::{
+    models::budget_update::BudgetUpdate,
+    schema::budget_updates::{
+        self as budget_updates_schema, dsl::budget_updates as budget_updates_table,
+    },
+};
+use diesel::{
+    result::Error, ExpressionMethods, QueryDsl, RunQueryDsl, SelectableHelper, SqliteConnection,
+};
+
+pub fn get_first_budget_update_with_date(
+    date: &str,
+    connection: &mut SqliteConnection,
+) -> Result<BudgetUpdate, Error> {
+    budget_updates_table
+        .select(BudgetUpdate::as_select())
+        .filter(budget_updates_schema::date.eq(date))
+        .first(connection)
+}
diff --git a/backend/app/src/queries/budget_updates/get_most_recent_with_category_id.rs b/backend/app/src/queries/budget_updates/get_most_recent_with_category_id.rs
new file mode 100644
index 0000000..4753092
--- /dev/null
+++ b/backend/app/src/queries/budget_updates/get_most_recent_with_category_id.rs
@@ -0,0 +1,18 @@
+use crate::{
+    models::date_time_utc::DateTimeUtc,
+    schema::budget_updates::{
+        self as budget_updates_schema, dsl::budget_updates as budget_updates_table,
+    },
+};
+use diesel::{dsl::max, result::Error, ExpressionMethods, QueryDsl, RunQueryDsl, SqliteConnection};
+
+pub fn get_most_recent_budget_update_date_with_category_id(
+    category_id: i32,
+    connection: &mut SqliteConnection,
+) -> Result<Option<String>, Error> {
+    budget_updates_table
+        .select(max(budget_updates_schema::date))
+        .filter(budget_updates_schema::category_id.eq(category_id))
+        .filter(budget_updates_schema::date.le(DateTimeUtc::now().to_day_str()))
+        .first(connection)
+}
diff --git a/backend/app/src/queries/budget_updates/mod.rs b/backend/app/src/queries/budget_updates/mod.rs
new file mode 100644
index 0000000..3b514dd
--- /dev/null
+++ b/backend/app/src/queries/budget_updates/mod.rs
@@ -0,0 +1,7 @@
+mod get_all;
+mod get_first_with_date;
+mod get_most_recent_with_category_id;
+
+pub use get_all::get_all_budget_updates;
+pub use get_first_with_date::get_first_budget_update_with_date;
+pub use get_most_recent_with_category_id::get_most_recent_budget_update_date_with_category_id;
diff --git a/backend/app/src/queries/categories/get_all.rs b/backend/app/src/queries/categories/get_all.rs
new file mode 100644
index 0000000..db5a073
--- /dev/null
+++ b/backend/app/src/queries/categories/get_all.rs
@@ -0,0 +1,8 @@
+use crate::{models::category::Category, schema::categories::dsl::categories as categories_table};
+use diesel::{result::Error, QueryDsl, RunQueryDsl, SelectableHelper, SqliteConnection};
+
+pub fn get_all_categories(connection: &mut SqliteConnection) -> Result<Vec<Category>, Error> {
+    categories_table
+        .select(Category::as_select())
+        .load(connection)
+}
diff --git a/backend/app/src/queries/categories/get_all_ids.rs b/backend/app/src/queries/categories/get_all_ids.rs
new file mode 100644
index 0000000..7c7c912
--- /dev/null
+++ b/backend/app/src/queries/categories/get_all_ids.rs
@@ -0,0 +1,8 @@
+use crate::schema::categories::{self as categories_schema, dsl::categories as categories_table};
+use diesel::{result::Error, QueryDsl, RunQueryDsl, SqliteConnection};
+
+pub fn get_all_category_ids(connection: &mut SqliteConnection) -> Result<Vec<i32>, Error> {
+    categories_table
+        .select(categories_schema::id)
+        .load(connection)
+}
diff --git a/backend/app/src/queries/categories/mod.rs b/backend/app/src/queries/categories/mod.rs
new file mode 100644
index 0000000..80356b3
--- /dev/null
+++ b/backend/app/src/queries/categories/mod.rs
@@ -0,0 +1,5 @@
+mod get_all;
+mod get_all_ids;
+
+pub use self::get_all::get_all_categories;
+pub use self::get_all_ids::get_all_category_ids;
diff --git a/backend/app/src/queries/category_balances/get_all.rs b/backend/app/src/queries/category_balances/get_all.rs
new file mode 100644
index 0000000..713fbeb
--- /dev/null
+++ b/backend/app/src/queries/category_balances/get_all.rs
@@ -0,0 +1,43 @@
+use crate::{
+    models::category_balance::CategoryBalance,
+    queries::{
+        budget_updates::get_all_budget_updates,
+        categories::get_all_categories,
+        category_transfers::{
+            sum_category_transfer_quantity_per_from_category_id,
+            sum_category_transfer_quantity_per_to_category_id,
+        },
+        transaction_categorisations::sum_transaction_categorisation_quantity_per_category_id,
+    },
+    utils::calculate_category_balance,
+};
+use diesel::{result::Error, SqliteConnection};
+
+pub fn get_all_category_balances(
+    connection: &mut SqliteConnection,
+) -> Result<Vec<CategoryBalance>, Error> {
+    let categories = get_all_categories(connection)?;
+    let transaction_sums = sum_transaction_categorisation_quantity_per_category_id(connection)?;
+    let category_transfer_from_sums =
+        sum_category_transfer_quantity_per_from_category_id(connection)?;
+    let category_transfer_to_sums = sum_category_transfer_quantity_per_to_category_id(connection)?;
+    let budget_updates = get_all_budget_updates(connection)?;
+
+    let mut balances = Vec::<CategoryBalance>::new();
+    for category in categories {
+        let balance = calculate_category_balance(
+            &category,
+            &transaction_sums,
+            &category_transfer_from_sums,
+            &category_transfer_to_sums,
+            &budget_updates,
+        );
+
+        balances.push(CategoryBalance {
+            category_id: category.id,
+            balance: balance.try_into().unwrap(),
+        })
+    }
+
+    Ok(balances)
+}
diff --git a/backend/app/src/queries/category_balances/mod.rs b/backend/app/src/queries/category_balances/mod.rs
new file mode 100644
index 0000000..3fc1be2
--- /dev/null
+++ b/backend/app/src/queries/category_balances/mod.rs
@@ -0,0 +1,3 @@
+mod get_all;
+
+pub use get_all::get_all_category_balances;
diff --git a/backend/app/src/queries/category_budgets/get_most_recent_per_category_id.rs b/backend/app/src/queries/category_budgets/get_most_recent_per_category_id.rs
new file mode 100644
index 0000000..6b76efd
--- /dev/null
+++ b/backend/app/src/queries/category_budgets/get_most_recent_per_category_id.rs
@@ -0,0 +1,42 @@
+use crate::{
+    models::{budget::Budget, category_budget::CategoryBudget},
+    queries::{
+        budget_updates::{
+            get_first_budget_update_with_date, get_most_recent_budget_update_date_with_category_id,
+        },
+        categories::get_all_category_ids,
+    },
+};
+use diesel::{result::Error, SqliteConnection};
+
+pub fn get_most_recent_category_budget_per_category_id(
+    connection: &mut SqliteConnection,
+) -> Result<Vec<CategoryBudget>, Error> {
+    let category_ids: Vec<i32> = get_all_category_ids(connection)?;
+
+    let mut budgets = Vec::<CategoryBudget>::new();
+    for category_id in category_ids {
+        let most_recent_budget_update_date =
+            get_most_recent_budget_update_date_with_category_id(category_id, connection)?;
+
+        if most_recent_budget_update_date.is_none() {
+            budgets.push(CategoryBudget {
+                category_id,
+                budget: Option::None,
+            });
+            continue;
+        }
+
+        let most_recent_budget_update = get_first_budget_update_with_date(
+            most_recent_budget_update_date.unwrap().as_str(),
+            connection,
+        )?;
+
+        budgets.push(CategoryBudget {
+            category_id,
+            budget: Some(Budget::from(&most_recent_budget_update)),
+        });
+    }
+
+    Ok(budgets)
+}
diff --git a/backend/app/src/queries/category_budgets/mod.rs b/backend/app/src/queries/category_budgets/mod.rs
new file mode 100644
index 0000000..29fc246
--- /dev/null
+++ b/backend/app/src/queries/category_budgets/mod.rs
@@ -0,0 +1,3 @@
+mod get_most_recent_per_category_id;
+
+pub use self::get_most_recent_per_category_id::get_most_recent_category_budget_per_category_id;
diff --git a/backend/app/src/queries/category_transfers/mod.rs b/backend/app/src/queries/category_transfers/mod.rs
new file mode 100644
index 0000000..85eb1c8
--- /dev/null
+++ b/backend/app/src/queries/category_transfers/mod.rs
@@ -0,0 +1,5 @@
+mod sum_quantity_per_from_category_id;
+mod sum_quantity_per_to_category_id;
+
+pub use sum_quantity_per_from_category_id::sum_category_transfer_quantity_per_from_category_id;
+pub use sum_quantity_per_to_category_id::sum_category_transfer_quantity_per_to_category_id;
diff --git a/backend/app/src/queries/category_transfers/sum_quantity_per_from_category_id.rs b/backend/app/src/queries/category_transfers/sum_quantity_per_from_category_id.rs
new file mode 100644
index 0000000..ae3a51a
--- /dev/null
+++ b/backend/app/src/queries/category_transfers/sum_quantity_per_from_category_id.rs
@@ -0,0 +1,17 @@
+use diesel::{dsl::sum, result::Error, QueryDsl, RunQueryDsl, SqliteConnection};
+
+use crate::schema::category_transfers::{
+    self as category_transfers_schema, dsl::category_transfers as category_transfers_table,
+};
+
+pub fn sum_category_transfer_quantity_per_from_category_id(
+    connection: &mut SqliteConnection,
+) -> Result<Vec<(i32, Option<i64>)>, Error> {
+    category_transfers_table
+        .group_by(category_transfers_schema::from_category_id)
+        .select((
+            category_transfers_schema::from_category_id,
+            sum(category_transfers_schema::quantity),
+        ))
+        .load::<(i32, Option<i64>)>(connection)
+}
diff --git a/backend/app/src/queries/category_transfers/sum_quantity_per_to_category_id.rs b/backend/app/src/queries/category_transfers/sum_quantity_per_to_category_id.rs
new file mode 100644
index 0000000..fe6f3a7
--- /dev/null
+++ b/backend/app/src/queries/category_transfers/sum_quantity_per_to_category_id.rs
@@ -0,0 +1,17 @@
+use diesel::{dsl::sum, result::Error, QueryDsl, RunQueryDsl, SqliteConnection};
+
+use crate::schema::category_transfers::{
+    self as category_transfers_schema, dsl::category_transfers as category_transfers_table,
+};
+
+pub fn sum_category_transfer_quantity_per_to_category_id(
+    connection: &mut SqliteConnection,
+) -> Result<Vec<(i32, Option<i64>)>, Error> {
+    category_transfers_table
+        .group_by(category_transfers_schema::to_category_id)
+        .select((
+            category_transfers_schema::to_category_id,
+            sum(category_transfers_schema::quantity),
+        ))
+        .load::<(i32, Option<i64>)>(connection)
+}
diff --git a/backend/app/src/queries/mod.rs b/backend/app/src/queries/mod.rs
new file mode 100644
index 0000000..43328e2
--- /dev/null
+++ b/backend/app/src/queries/mod.rs
@@ -0,0 +1,7 @@
+pub mod accounts;
+pub mod budget_updates;
+pub mod categories;
+pub mod category_balances;
+pub mod category_budgets;
+pub mod category_transfers;
+pub mod transaction_categorisations;
diff --git a/backend/app/src/queries/transaction_categorisations/mod.rs b/backend/app/src/queries/transaction_categorisations/mod.rs
new file mode 100644
index 0000000..d4217cc
--- /dev/null
+++ b/backend/app/src/queries/transaction_categorisations/mod.rs
@@ -0,0 +1,3 @@
+mod sum_quantity_per_category_id;
+
+pub use sum_quantity_per_category_id::sum_transaction_categorisation_quantity_per_category_id;
diff --git a/backend/app/src/queries/transaction_categorisations/sum_quantity_per_category_id.rs b/backend/app/src/queries/transaction_categorisations/sum_quantity_per_category_id.rs
new file mode 100644
index 0000000..7f93e0c
--- /dev/null
+++ b/backend/app/src/queries/transaction_categorisations/sum_quantity_per_category_id.rs
@@ -0,0 +1,17 @@
+use crate::schema::transaction_categorisations::{
+    self as transaction_categorisations_schema,
+    dsl::transaction_categorisations as transaction_categorisations_table,
+};
+use diesel::{dsl::sum, result::Error, QueryDsl, RunQueryDsl, SqliteConnection};
+
+pub fn sum_transaction_categorisation_quantity_per_category_id(
+    connection: &mut SqliteConnection,
+) -> Result<Vec<(i32, Option<i64>)>, Error> {
+    transaction_categorisations_table
+        .group_by(transaction_categorisations_schema::category_id)
+        .select((
+            transaction_categorisations_schema::category_id,
+            sum(transaction_categorisations_schema::quantity),
+        ))
+        .load::<(i32, Option<i64>)>(connection)
+}
diff --git a/backend/app/src/queries/transaction_categorisations/sum_quantity_per_to_category_id.rs b/backend/app/src/queries/transaction_categorisations/sum_quantity_per_to_category_id.rs
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/backend/app/src/queries/transaction_categorisations/sum_quantity_per_to_category_id.rs