use anyhow::{Context, Result};
use diesel::{QueryDsl, RunQueryDsl, SelectableHelper, SqliteConnection};
use schist_models::drip::Drip;
use schist_schema::schema::drips::dsl::drips as drips_table;

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

pub fn get_all_drips(connection: &mut SqliteConnection) -> Result<Vec<Drip>> {
    let all_drips = drips_table
        .select(Drip::as_select())
        .load(connection)
        .with_context(|| "failed to get all drips")?;
    Ok(all_drips)
}

pub fn insert_drips(drips: &[Drip], connection: &mut SqliteConnection) -> Result<usize> {
    let num_drips_inserted = diesel::insert_into(drips_table)
        .values(drips)
        .execute(connection)
        .with_context(|| insert_err_msg(drips))?;
    Ok(num_drips_inserted)
}

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