Refactors workspace

1 files changed, 74 insertions, 0 deletions

diff --git a/rust/schist_queries/src/budget_updates.rs b/rust/schist_queries/src/budget_updates.rs
new file mode 100644
index 0000000..07d4808
--- /dev/null
+++ b/rust/schist_queries/src/budget_updates.rs
@@ -0,0 +1,74 @@
+use anyhow::{Context, Result};
+use diesel::{dsl::max, ExpressionMethods, OptionalExtension, QueryDsl, RunQueryDsl, SelectableHelper, SqliteConnection};
+use schist_models::{budget_update::BudgetUpdate, date_utc::DateUtc};
+use schist_schema::schema::budget_updates::{
+    self as budget_updates_schema, dsl::budget_updates as budget_updates_table,
+};
+use schist_traits::nowlike::Nowlike;
+
+pub fn delete_all_budget_updates(connection: &mut SqliteConnection) -> Result<usize> {
+    let num_rows_deleted = diesel::delete(budget_updates_table)
+        .execute(connection)
+        .with_context(|| "failed to delete all budget updates")?;
+    Ok(num_rows_deleted)
+}
+
+pub fn get_all_budget_updates(
+    connection: &mut SqliteConnection,
+) -> Result<Vec<BudgetUpdate>> {
+    let all_budget_updates = budget_updates_table
+        .select(BudgetUpdate::as_select())
+        .load::<BudgetUpdate>(connection)
+        .with_context(|| "failed to get all budget updates")?;
+    Ok(all_budget_updates)
+}
+
+pub fn get_first_budget_update_with_date_and_category_id(
+    date: &DateUtc,
+    category_id: i32,
+    connection: &mut SqliteConnection,
+) -> Result<Option<BudgetUpdate>> {
+    let first_budget_update = budget_updates_table
+        .select(BudgetUpdate::as_select())
+        .filter(budget_updates_schema::date.eq(date.to_string()))
+        .filter(budget_updates_schema::category_id.eq(category_id))
+        .first(connection)
+        .optional()
+        .with_context(|| format!("failed to get first budget update with date {}", date.to_string()))?;
+    Ok(first_budget_update)
+}
+
+pub fn get_most_recent_budget_update_date_with_category_id(
+    category_id: i32,
+    connection: &mut SqliteConnection,
+) -> Result<Option<DateUtc>> {
+    let most_recent_date = budget_updates_table
+        .select(max(budget_updates_schema::date))
+        .filter(budget_updates_schema::category_id.eq(category_id))
+        .filter(budget_updates_schema::date.le(DateUtc::now()))
+        .first(connection)
+        .with_context(|| format!("failed to get most recent budget update date with category ID {}", category_id))?;
+    Ok(most_recent_date)
+}
+
+pub fn insert_budget_updates(
+    budget_updates: &[BudgetUpdate],
+    connection: &mut SqliteConnection,
+) -> Result<usize> {
+    let num_rows_inserted = diesel::insert_into(budget_updates_table)
+        .values(budget_updates)
+        .execute(connection)
+        .with_context(|| insert_err_msg(budget_updates))?;
+    Ok(num_rows_inserted)
+}
+
+fn insert_err_msg(budget_updates: &[BudgetUpdate]) -> String {
+    format!(
+        "failed to insert budget updates: [{}]",
+        budget_updates
+            .iter()
+            .map(|a| a.id.to_string())
+            .collect::<Vec<String>>()
+            .join(", ")
+    )
+}