use anyhow::{Context, Result};
use diesel::{QueryDsl, RunQueryDsl, SelectableHelper, SqliteConnection};
use schist_models::AccountTransfer;
use schist_schema::schema::account_transfers::dsl::account_transfers as account_transfers_table;

pub fn delete_all_account_transfers(connection: &mut SqliteConnection) -> Result<usize> {
    let num_rows_deleted = diesel::delete(account_transfers_table)
        .execute(connection)
        .with_context(|| "failed to delete all account_transfers")?;
    Ok(num_rows_deleted)
}

pub fn get_all_account_transfers(
    connection: &mut SqliteConnection,
) -> Result<Vec<AccountTransfer>> {
    let all_account_transfers = account_transfers_table
        .select(AccountTransfer::as_select())
        .load(connection)
        .with_context(|| "failed to get all account transfers")?;
    Ok(all_account_transfers)
}

pub fn insert_account_transfers(
    account_transfers: &[AccountTransfer],
    connection: &mut SqliteConnection,
) -> Result<usize> {
    let num_account_transfers_inserted = diesel::insert_into(account_transfers_table)
        .values(account_transfers)
        .execute(connection)
        .with_context(|| insert_err_msg(account_transfers))?;
    Ok(num_account_transfers_inserted)
}

fn insert_err_msg(account_transfers: &[AccountTransfer]) -> String {
    format!(
        "failed to insert account transfers: [{}]",
        account_transfers
            .iter()
            .map(|a| a.id.to_string())
            .collect::<Vec<String>>()
            .join(", ")
    )
}