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use anyhow::{Context, Result};
use diesel::{QueryDsl, RunQueryDsl, SelectableHelper, SqliteConnection};
use schist_models::category::Category;
use schist_schema::schema::categories::{self as categories_schema, dsl::categories as categories_table};
pub fn delete_all_categories(connection: &mut SqliteConnection) -> Result<usize> {
let num_rows_deleted = diesel::delete(categories_table)
.execute(connection)
.with_context(|| "failed to delete all categories")?;
Ok(num_rows_deleted)
}
pub fn get_all_categories(connection: &mut SqliteConnection) -> Result<Vec<Category>> {
let all_categories = categories_table
.select(Category::as_select())
.load(connection)
.with_context(|| "failed to get all categories")?;
Ok(all_categories)
}
pub fn get_all_category_ids(connection: &mut SqliteConnection) -> Result<Vec<i32>> {
let all_category_ids = categories_table
.select(categories_schema::id)
.load(connection)
.with_context(|| "failed to get all category IDs")?;
Ok(all_category_ids)
}
pub fn insert_categories(
categories: &[Category],
connection: &mut SqliteConnection,
) -> Result<usize> {
let num_categories_inserted = diesel::insert_into(categories_table)
.values(categories)
.execute(connection)
.with_context(|| insert_err_msg(categories))?;
Ok(num_categories_inserted)
}
fn insert_err_msg(categories: &[Category]) -> String {
format!(
"failed to insert categories: [{}]",
categories
.iter()
.map(|c| format!("\"{}\": \"{}\"", c.id, c.name))
.collect::<Vec<String>>()
.join(", ")
)
}
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