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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(", ")
)
}
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