use std::collections::HashMap;

use actualbudget_models::{ActualbudgetAccount, ActualbudgetPayee};
use anyhow::Context;

use super::{account_names::ACCOUNT_NAMES_DICT, payee_names::PAYEE_NAMES_DICT};

pub fn get_payee_matchers(
) -> Vec<Box<dyn Fn(&ActualbudgetPayee, &HashMap<String, ActualbudgetAccount>) -> bool>> {
    vec![
        Box::new(|p, a| matches_bank_account_transfer_account(p, a)),
        Box::new(|p, a| matches_cash_account_transfer_account(p, a)),
        Box::new(|p, a| matches_category_transfers_transfer_account(p, a)),
        Box::new(|p, a| matches_starting_balances(p, a)),
        Box::new(|p, a| matches_employer(p, a)),
        Box::new(|p, a| matches_tesco(p, a)),
    ]
}

fn matches_bank_account_transfer_account(
    payee: &ActualbudgetPayee,
    accounts: &HashMap<String, ActualbudgetAccount>,
) -> bool {
    let bank_account = accounts
        .get(ACCOUNT_NAMES_DICT.bank_account)
        .with_context(|| "failed to get bank account")
        .unwrap();

    match payee {
        ActualbudgetPayee {
            name,
            transfer_account_id,
            ..
        } => name == ""
            && transfer_account_id.clone().is_some_and(
                |account_id| account_id == bank_account.id,
            ),
    }
}

fn matches_cash_account_transfer_account(
    payee: &ActualbudgetPayee,
    accounts: &HashMap<String, ActualbudgetAccount>,
) -> bool {
    let cash_account = accounts
        .get(ACCOUNT_NAMES_DICT.cash_account)
        .with_context(|| "failed to find cash account")
        .unwrap();

    match payee {
        ActualbudgetPayee {
            name,
            transfer_account_id,
            ..
        } => name == ""
            && transfer_account_id.clone().is_some_and(
                |account_id| account_id == cash_account.id,
            ),
    }
}

fn matches_category_transfers_transfer_account(
    payee: &ActualbudgetPayee,
    accounts: &HashMap<String, ActualbudgetAccount>,
) -> bool {
    let category_transfers_account = accounts
        .get(ACCOUNT_NAMES_DICT.transfers_account)
        .with_context(|| "failed to find category transfers account")
        .unwrap();

    match payee {
        ActualbudgetPayee {
            name,
            transfer_account_id,
            ..
        } => name == ""
            && transfer_account_id.clone().is_some_and(
                |account_id| account_id == category_transfers_account.id,
            ),
    }
}

fn matches_starting_balances(
    payee: &ActualbudgetPayee,
    _accounts: &HashMap<String, ActualbudgetAccount>,
) -> bool {
    match payee {
        ActualbudgetPayee {
            name,
            transfer_account_id,
            ..
        } => transfer_account_id.is_none()
            && name.clone() == PAYEE_NAMES_DICT.starting_balances,
    }
}

fn matches_employer(
    payee: &ActualbudgetPayee,
    _accounts: &HashMap<String, ActualbudgetAccount>,
) -> bool {
    match payee {
        ActualbudgetPayee {
            name,
            transfer_account_id,
            ..
        } => transfer_account_id.is_none()
            && name == PAYEE_NAMES_DICT.employer,
    }
}


fn matches_tesco(
    payee: &ActualbudgetPayee,
    _accounts: &HashMap<String, ActualbudgetAccount>,
) -> bool {
    match payee {
        ActualbudgetPayee {
            name,
            transfer_account_id,
            ..
        } => transfer_account_id.is_none()
            && name == PAYEE_NAMES_DICT.tesco,
    }
}