use std::str::FromStr;
use std::time::{SystemTime, UNIX_EPOCH};

use anyhow::Result;
use lwk_wollet::elements::{LockTime, LockTime::*};

use crate::error::PaymentError;

pub(crate) fn now() -> u32 {
    SystemTime::now()
        .duration_since(UNIX_EPOCH)
        .unwrap()
        .as_secs() as u32
}

pub(crate) fn json_to_pubkey(json: &str) -> Result<boltz_client::PublicKey, PaymentError> {
    boltz_client::PublicKey::from_str(json).map_err(|e| PaymentError::Generic {
        err: format!("Failed to deserialize PublicKey: {e:?}"),
    })
}

pub(crate) fn generate_keypair() -> boltz_client::Keypair {
    let secp = boltz_client::Secp256k1::new();
    let mut rng = bip39::rand::rngs::OsRng;
    let secret_key = lwk_wollet::secp256k1::SecretKey::new(&mut rng);
    boltz_client::Keypair::from_secret_key(&secp, &secret_key)
}

pub(crate) fn decode_keypair(secret_key: &str) -> Result<boltz_client::Keypair, lwk_wollet::Error> {
    let secp = boltz_client::Secp256k1::new();
    let secret_key = lwk_wollet::secp256k1::SecretKey::from_str(secret_key)?;
    Ok(boltz_client::Keypair::from_secret_key(&secp, &secret_key))
}

pub(crate) fn is_locktime_expired(current_locktime: LockTime, expiry_locktime: LockTime) -> bool {
    match (current_locktime, expiry_locktime) {
        (Blocks(n), Blocks(lock_time)) => n >= lock_time,
        (Seconds(n), Seconds(lock_time)) => n >= lock_time,
        _ => false, // Not using the same units
    }
}