use cucumber::{given, then, when, World};
use std::sync::Arc;
use verax::{storage::SQLite, Asset};

#[derive(Debug, World)]
pub struct LedgerWorld {
    ledger: Arc<verax::Ledger<SQLite>>,
    revisions: Vec<verax::RevId>,
}

impl Default for LedgerWorld {
    fn default() -> Self {
        futures::executor::block_on(async move {
            let settings = "sqlite://:memory:"
                .parse::<verax::storage::sqlite::SqliteConnectOptions>()
                .expect("valid settings")
                .journal_mode(verax::storage::sqlite::SqliteJournalMode::Wal)
                .create_if_missing(true);

            let pool = verax::storage::sqlite::SqlitePoolOptions::new()
                .connect_with(settings)
                .await
                .expect("pool");

            let db = SQLite::new(pool);
            db.setup().await.expect("setup");

            Self {
                ledger: verax::Ledger::new(db.into()),
                revisions: vec![],
            }
        })
    }
}

#[given(expr = "a {word} deposit of {word} {word} for {word}")]
async fn deposit_funds(
    world: &mut LedgerWorld,
    status: String,
    amount: String,
    asset: String,
    account: String,
) {
    let asset = asset.parse::<Asset>().expect("valid asset");

    world.revisions.push(
        world
            .ledger
            .deposit(
                &account.parse().expect("valid account"),
                asset.from_human(&amount).expect("valid amount"),
                status.parse().expect("valid status"),
                vec![],
                "Initial deposit".to_owned(),
            )
            .await
            .expect("deposit")
            .revision_id,
    );
}

#[when(expr = "update last transaction set status to {word}")]
async fn update_status_from_last_tx(world: &mut LedgerWorld, new_status: String) {
    let revision = world.revisions.pop().expect("has last revision");
    let status = new_status.parse().expect("valid status");

    world.revisions.push(
        world
            .ledger
            .change_status(revision, status, "update status".to_owned())
            .await
            .expect("update status")
            .revision_id,
    );
}

#[then(expr = "{word} has no balance")]
async fn check_balance_empty(world: &mut LedgerWorld, account: String) {
    let balance = world
        .ledger
        .get_balance(&account.parse().expect("valid account"))
        .await
        .expect("balance")
        .into_iter()
        .filter(|b| b.cents() != 0)
        .collect::<Vec<_>>();

    assert_eq!(0, balance.len())
}

#[then(expr = "{word} has balance of {word} {word}")]
async fn check_balance(world: &mut LedgerWorld, account: String, amount: String, asset: String) {
    let asset = asset.parse::<Asset>().expect("valid asset");
    let amount = asset.from_human(&amount).expect("valid amount");

    let balances = world
        .ledger
        .get_balance(&account.parse().expect("valid account"))
        .await
        .expect("balance")
        .into_iter()
        .filter(|b| b.asset() == &asset)
        .collect::<Vec<_>>();

    assert_eq!(1, balances.len(), "{} is found", asset);
    assert_eq!(balances.get(0), Some(&amount));
}

#[tokio::main]
async fn main() {
    LedgerWorld::run("tests/simple.feature").await;
}