mod common;

use common::test_context::TestContext;
use diesel::{Connection, SqliteConnection};
use schist_fakes::category::make_fake_category;
use schist_models::category::Category;
use schist_queries as queries;

fn given_categories(connection: &mut SqliteConnection) -> Vec<Category> {
    let categories = vec![make_fake_category(0), make_fake_category(1)];
    let _ = queries::categories::insert_categories(&categories, connection).unwrap();
    categories
}

#[test]
fn when_insert_categories_then_returns_num_categories() {
    let context = TestContext::new();
    let connection = &mut SqliteConnection::establish(&context.db_url).unwrap();
    let categories = [make_fake_category(0), make_fake_category(1)];

    let num_categories_inserted = queries::categories::insert_categories(&categories, connection).unwrap();

    assert_eq!(num_categories_inserted, 2);
}

#[test]
fn given_categories_when_get_all_categories_then_return_categories() {
    let context = TestContext::new();
    let connection = &mut SqliteConnection::establish(&context.db_url).unwrap();
    let categories = given_categories(connection);

    let categories_in_db = queries::categories::get_all_categories(connection).unwrap();

    assert_eq!(categories_in_db.len(), categories.len());
    for category in &categories {
        assert!(categories_in_db.iter().any(|category_in_db| category_in_db.eq(&category)));
    }
    for category_in_db in categories_in_db {
        assert!(categories.iter().any(|category| category.eq(&category_in_db)));
    }
}

#[test]
fn given_categories_when_delete_all_categories_then_return_num_of_categories() {
    let context = TestContext::new();
    let connection = &mut SqliteConnection::establish(&context.db_url).unwrap();
    let categories = given_categories(connection);

    let num_categories_deleted = queries::categories::delete_all_categories(connection).unwrap();

    assert_eq!(num_categories_deleted, categories.len());
}

#[test]
fn given_deleted_categories_when_get_all_categories_then_return_empty() {
    let context = TestContext::new();
    let connection = &mut SqliteConnection::establish(&context.db_url).unwrap();
    given_categories(connection);
    let _ = queries::categories::delete_all_categories(connection).unwrap();

    let categories_returned = queries::categories::get_all_categories(connection).unwrap();

    assert_eq!(categories_returned.len(), 0);
}

#[test]
fn given_categories_when_get_all_ids_then_return_all_ids() {
    let context = TestContext::new();
    let connection = &mut SqliteConnection::establish(&context.db_url).unwrap();
    let categories = given_categories(connection);

    let ids = queries::categories::get_all_category_ids(connection).unwrap();

    assert_eq!(categories.len(), ids.len());
    for category in &categories {
        assert!(ids.iter().any(|id| category.id == *id));
    }
    for id in ids {
        assert!(categories.iter().any(|category| category.id == id));
    }
}