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use anyhow::{Context, Result};
use diesel::{dsl::sum, QueryDsl, RunQueryDsl, SelectableHelper, SqliteConnection};
use schist_models::BucketTransaction;
use schist_schema::schema::bucket_transactions::{
self as bucket_transactions_schema, dsl::bucket_transactions as bucket_transactions_table,
};
pub fn delete_all_bucket_transactions(connection: &mut SqliteConnection) -> Result<usize> {
let num_rows_deleted = diesel::delete(bucket_transactions_table)
.execute(connection)
.with_context(|| "failed to delete all bucket transactions")?;
Ok(num_rows_deleted)
}
pub fn get_all_bucket_transactions(
connection: &mut SqliteConnection,
) -> Result<Vec<BucketTransaction>> {
let all_bucket_transactions = bucket_transactions_table
.select(BucketTransaction::as_select())
.load(connection)
.with_context(|| "failed to get all bucket transactions")?;
Ok(all_bucket_transactions)
}
pub fn insert_bucket_transactions(
bucket_transactions: &[BucketTransaction],
connection: &mut SqliteConnection,
) -> Result<usize> {
let num_rows_inserted = diesel::insert_into(bucket_transactions_table)
.values(bucket_transactions)
.execute(connection)
.with_context(|| insert_err_msg(&bucket_transactions))?;
Ok(num_rows_inserted)
}
fn insert_err_msg(bucket_transactions: &[BucketTransaction]) -> String {
format!(
"failed to insert bucket transactions: [{}]",
bucket_transactions
.iter()
.map(|ct| ct.id.to_string())
.collect::<Vec<String>>()
.join(", ")
)
}
pub fn sum_bucket_transaction_amount_per_bucket_id(
connection: &mut SqliteConnection,
) -> Result<Vec<(i32, i64)>> {
let sum = bucket_transactions_table
.group_by(bucket_transactions_schema::bucket_id)
.select((
bucket_transactions_schema::bucket_id,
sum(bucket_transactions_schema::amount),
))
.load::<(i32, Option<i64>)>(connection)
.map(|result| {
result
.iter()
.map(|sum| (sum.0, sum.1.unwrap_or(0)))
.collect()
})
.with_context(|| "failed to sum bucket transaction amount per bucket ID")?;
Ok(sum)
}
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