use std::time::Duration;

use anyhow::{Context as _, Result};
use integration_tests::{
    ACC_RECEIVER, ACC_RECEIVER_PRIVATE, ACC_SENDER, ACC_SENDER_PRIVATE,
    TIME_TO_WAIT_FOR_BLOCK_SECONDS, TestContext, fetch_privacy_preserving_tx,
    format_private_account_id, format_public_account_id, verify_commitment_is_in_state,
};
use log::info;
use nssa::{AccountId, program::Program};
use nssa_core::{NullifierPublicKey, encryption::shared_key_derivation::Secp256k1Point};
use tokio::test;
use wallet::cli::{
    Command, SubcommandReturnValue,
    account::{AccountSubcommand, NewSubcommand},
    programs::native_token_transfer::AuthTransferSubcommand,
};

#[test]
async fn private_transfer_to_owned_account() -> Result<()> {
    let mut ctx = TestContext::new().await?;

    let from: AccountId = ACC_SENDER_PRIVATE.parse()?;
    let to: AccountId = ACC_RECEIVER_PRIVATE.parse()?;

    let command = Command::AuthTransfer(AuthTransferSubcommand::Send {
        from: format_private_account_id(&from.to_string()),
        to: Some(format_private_account_id(&to.to_string())),
        to_npk: None,
        to_ipk: None,
        amount: 100,
    });

    wallet::cli::execute_subcommand(ctx.wallet_mut(), command).await?;

    info!("Waiting for next block creation");
    tokio::time::sleep(Duration::from_secs(TIME_TO_WAIT_FOR_BLOCK_SECONDS)).await;

    let new_commitment1 = ctx
        .wallet()
        .get_private_account_commitment(&from)
        .context("Failed to get private account commitment for sender")?;
    assert!(verify_commitment_is_in_state(new_commitment1, ctx.sequencer_client()).await);

    let new_commitment2 = ctx
        .wallet()
        .get_private_account_commitment(&to)
        .context("Failed to get private account commitment for receiver")?;
    assert!(verify_commitment_is_in_state(new_commitment2, ctx.sequencer_client()).await);

    info!("Successfully transferred privately to owned account");

    Ok(())
}

#[test]
async fn private_transfer_to_foreign_account() -> Result<()> {
    let mut ctx = TestContext::new().await?;

    let from: AccountId = ACC_SENDER_PRIVATE.parse()?;
    let to_npk = NullifierPublicKey([42; 32]);
    let to_npk_string = hex::encode(to_npk.0);
    let to_ipk = Secp256k1Point::from_scalar(to_npk.0);

    let command = Command::AuthTransfer(AuthTransferSubcommand::Send {
        from: format_private_account_id(&from.to_string()),
        to: None,
        to_npk: Some(to_npk_string),
        to_ipk: Some(hex::encode(to_ipk.0)),
        amount: 100,
    });

    let result = wallet::cli::execute_subcommand(ctx.wallet_mut(), command).await?;
    let SubcommandReturnValue::PrivacyPreservingTransfer { tx_hash } = result else {
        anyhow::bail!("Expected PrivacyPreservingTransfer return value");
    };

    info!("Waiting for next block creation");
    tokio::time::sleep(Duration::from_secs(TIME_TO_WAIT_FOR_BLOCK_SECONDS)).await;

    let new_commitment1 = ctx
        .wallet()
        .get_private_account_commitment(&from)
        .context("Failed to get private account commitment for sender")?;

    let tx = fetch_privacy_preserving_tx(ctx.sequencer_client(), tx_hash.clone()).await;
    assert_eq!(tx.message.new_commitments[0], new_commitment1);

    assert_eq!(tx.message.new_commitments.len(), 2);
    for commitment in tx.message.new_commitments.into_iter() {
        assert!(verify_commitment_is_in_state(commitment, ctx.sequencer_client()).await);
    }

    info!("Successfully transferred privately to foreign account");

    Ok(())
}

#[test]
async fn deshielded_transfer_to_public_account() -> Result<()> {
    let mut ctx = TestContext::new().await?;

    let from: AccountId = ACC_SENDER_PRIVATE.parse()?;
    let to: AccountId = ACC_RECEIVER.parse()?;

    // Check initial balance of the private sender
    let from_acc = ctx
        .wallet()
        .get_account_private(&from)
        .context("Failed to get sender's private account")?;
    assert_eq!(from_acc.balance, 10000);

    let command = Command::AuthTransfer(AuthTransferSubcommand::Send {
        from: format_private_account_id(&from.to_string()),
        to: Some(format_public_account_id(&to.to_string())),
        to_npk: None,
        to_ipk: None,
        amount: 100,
    });

    wallet::cli::execute_subcommand(ctx.wallet_mut(), command).await?;

    info!("Waiting for next block creation");
    tokio::time::sleep(Duration::from_secs(TIME_TO_WAIT_FOR_BLOCK_SECONDS)).await;

    let from_acc = ctx
        .wallet()
        .get_account_private(&from)
        .context("Failed to get sender's private account")?;
    let new_commitment = ctx
        .wallet()
        .get_private_account_commitment(&from)
        .context("Failed to get private account commitment")?;
    assert!(verify_commitment_is_in_state(new_commitment, ctx.sequencer_client()).await);

    let acc_2_balance = ctx
        .sequencer_client()
        .get_account_balance(to.to_string())
        .await?;

    assert_eq!(from_acc.balance, 9900);
    assert_eq!(acc_2_balance.balance, 20100);

    info!("Successfully deshielded transfer to public account");

    Ok(())
}

#[test]
async fn private_transfer_to_owned_account_using_claiming_path() -> Result<()> {
    let mut ctx = TestContext::new().await?;

    let from: AccountId = ACC_SENDER_PRIVATE.parse()?;

    // Create a new private account
    let command = Command::Account(AccountSubcommand::New(NewSubcommand::Private { cci: None }));

    let sub_ret = wallet::cli::execute_subcommand(ctx.wallet_mut(), command).await?;
    let SubcommandReturnValue::RegisterAccount {
        account_id: to_account_id,
    } = sub_ret
    else {
        anyhow::bail!("Expected RegisterAccount return value");
    };

    // Get the keys for the newly created account
    let (to_keys, _) = ctx
        .wallet()
        .storage()
        .user_data
        .get_private_account(&to_account_id)
        .cloned()
        .context("Failed to get private account")?;

    // Send to this account using claiming path (using npk and ipk instead of account ID)
    let command = Command::AuthTransfer(AuthTransferSubcommand::Send {
        from: format_private_account_id(&from.to_string()),
        to: None,
        to_npk: Some(hex::encode(to_keys.nullifer_public_key.0)),
        to_ipk: Some(hex::encode(to_keys.incoming_viewing_public_key.0)),
        amount: 100,
    });

    let sub_ret = wallet::cli::execute_subcommand(ctx.wallet_mut(), command).await?;
    let SubcommandReturnValue::PrivacyPreservingTransfer { tx_hash } = sub_ret else {
        anyhow::bail!("Expected PrivacyPreservingTransfer return value");
    };

    let tx = fetch_privacy_preserving_tx(ctx.sequencer_client(), tx_hash.clone()).await;

    // Sync the wallet to claim the new account
    let command = Command::Account(AccountSubcommand::SyncPrivate {});
    wallet::cli::execute_subcommand(ctx.wallet_mut(), command).await?;

    let new_commitment1 = ctx
        .wallet()
        .get_private_account_commitment(&from)
        .context("Failed to get private account commitment for sender")?;
    assert_eq!(tx.message.new_commitments[0], new_commitment1);

    assert_eq!(tx.message.new_commitments.len(), 2);
    for commitment in tx.message.new_commitments.into_iter() {
        assert!(verify_commitment_is_in_state(commitment, ctx.sequencer_client()).await);
    }

    let to_res_acc = ctx
        .wallet()
        .get_account_private(&to_account_id)
        .context("Failed to get recipient's private account")?;
    assert_eq!(to_res_acc.balance, 100);

    info!("Successfully transferred using claiming path");

    Ok(())
}

#[test]
async fn shielded_transfer_to_owned_private_account() -> Result<()> {
    let mut ctx = TestContext::new().await?;

    let from: AccountId = ACC_SENDER.parse()?;
    let to: AccountId = ACC_RECEIVER_PRIVATE.parse()?;

    let command = Command::AuthTransfer(AuthTransferSubcommand::Send {
        from: format_public_account_id(&from.to_string()),
        to: Some(format_private_account_id(&to.to_string())),
        to_npk: None,
        to_ipk: None,
        amount: 100,
    });

    wallet::cli::execute_subcommand(ctx.wallet_mut(), command).await?;

    info!("Waiting for next block creation");
    tokio::time::sleep(Duration::from_secs(TIME_TO_WAIT_FOR_BLOCK_SECONDS)).await;

    let acc_to = ctx
        .wallet()
        .get_account_private(&to)
        .context("Failed to get receiver's private account")?;
    let new_commitment = ctx
        .wallet()
        .get_private_account_commitment(&to)
        .context("Failed to get receiver's commitment")?;
    assert!(verify_commitment_is_in_state(new_commitment, ctx.sequencer_client()).await);

    let acc_from_balance = ctx
        .sequencer_client()
        .get_account_balance(from.to_string())
        .await?;

    assert_eq!(acc_from_balance.balance, 9900);
    assert_eq!(acc_to.balance, 20100);

    info!("Successfully shielded transfer to owned private account");

    Ok(())
}

#[test]
async fn shielded_transfer_to_foreign_account() -> Result<()> {
    let mut ctx = TestContext::new().await?;

    let to_npk = NullifierPublicKey([42; 32]);
    let to_npk_string = hex::encode(to_npk.0);
    let to_ipk = Secp256k1Point::from_scalar(to_npk.0);
    let from: AccountId = ACC_SENDER.parse()?;

    let command = Command::AuthTransfer(AuthTransferSubcommand::Send {
        from: format_public_account_id(&from.to_string()),
        to: None,
        to_npk: Some(to_npk_string),
        to_ipk: Some(hex::encode(to_ipk.0)),
        amount: 100,
    });

    let result = wallet::cli::execute_subcommand(ctx.wallet_mut(), command).await?;
    let SubcommandReturnValue::PrivacyPreservingTransfer { tx_hash } = result else {
        anyhow::bail!("Expected PrivacyPreservingTransfer return value");
    };

    info!("Waiting for next block creation");
    tokio::time::sleep(Duration::from_secs(TIME_TO_WAIT_FOR_BLOCK_SECONDS)).await;

    let tx = fetch_privacy_preserving_tx(ctx.sequencer_client(), tx_hash).await;

    let acc_1_balance = ctx
        .sequencer_client()
        .get_account_balance(from.to_string())
        .await?;

    assert!(
        verify_commitment_is_in_state(
            tx.message.new_commitments[0].clone(),
            ctx.sequencer_client()
        )
        .await
    );

    assert_eq!(acc_1_balance.balance, 9900);

    info!("Successfully shielded transfer to foreign account");

    Ok(())
}

#[test]
#[ignore = "Flaky, TODO: #197"]
async fn private_transfer_to_owned_account_continuous_run_path() -> Result<()> {
    let mut ctx = TestContext::new().await?;

    // NOTE: This test needs refactoring - continuous run mode doesn't work well with TestContext
    // The original implementation spawned wallet::cli::execute_continuous_run() in background
    // but this conflicts with TestContext's wallet management

    let from: AccountId = ACC_SENDER_PRIVATE.parse()?;

    // Create a new private account
    let command = Command::Account(AccountSubcommand::New(NewSubcommand::Private { cci: None }));
    let sub_ret = wallet::cli::execute_subcommand(ctx.wallet_mut(), command).await?;

    let SubcommandReturnValue::RegisterAccount {
        account_id: to_account_id,
    } = sub_ret
    else {
        anyhow::bail!("Failed to register account");
    };

    // Get the newly created account's keys
    let (to_keys, _) = ctx
        .wallet()
        .storage()
        .user_data
        .get_private_account(&to_account_id)
        .cloned()
        .context("Failed to get private account")?;

    // Send transfer using nullifier and incoming viewing public keys
    let command = Command::AuthTransfer(AuthTransferSubcommand::Send {
        from: format_private_account_id(&from.to_string()),
        to: None,
        to_npk: Some(hex::encode(to_keys.nullifer_public_key.0)),
        to_ipk: Some(hex::encode(to_keys.incoming_viewing_public_key.0)),
        amount: 100,
    });

    let sub_ret = wallet::cli::execute_subcommand(ctx.wallet_mut(), command).await?;
    let SubcommandReturnValue::PrivacyPreservingTransfer { tx_hash } = sub_ret else {
        anyhow::bail!("Failed to send transaction");
    };

    let tx = fetch_privacy_preserving_tx(ctx.sequencer_client(), tx_hash.clone()).await;

    info!("Waiting for next blocks to check if continuous run fetches account");
    tokio::time::sleep(Duration::from_secs(TIME_TO_WAIT_FOR_BLOCK_SECONDS)).await;
    tokio::time::sleep(Duration::from_secs(TIME_TO_WAIT_FOR_BLOCK_SECONDS)).await;

    // Verify commitments are in state
    assert_eq!(tx.message.new_commitments.len(), 2);
    for commitment in tx.message.new_commitments.into_iter() {
        assert!(verify_commitment_is_in_state(commitment, ctx.sequencer_client()).await);
    }

    // Verify receiver account balance
    let to_res_acc = ctx
        .wallet()
        .get_account_private(&to_account_id)
        .context("Failed to get receiver account")?;

    assert_eq!(to_res_acc.balance, 100);

    Ok(())
}

#[test]
async fn initialize_private_account() -> Result<()> {
    let mut ctx = TestContext::new().await?;

    let command = Command::Account(AccountSubcommand::New(NewSubcommand::Private { cci: None }));
    let result = wallet::cli::execute_subcommand(ctx.wallet_mut(), command).await?;
    let SubcommandReturnValue::RegisterAccount { account_id } = result else {
        anyhow::bail!("Expected RegisterAccount return value");
    };

    let command = Command::AuthTransfer(AuthTransferSubcommand::Init {
        account_id: format_private_account_id(&account_id.to_string()),
    });
    wallet::cli::execute_subcommand(ctx.wallet_mut(), command).await?;

    tokio::time::sleep(Duration::from_secs(TIME_TO_WAIT_FOR_BLOCK_SECONDS)).await;

    info!("Syncing private accounts");
    let command = Command::Account(AccountSubcommand::SyncPrivate {});
    wallet::cli::execute_subcommand(ctx.wallet_mut(), command).await?;

    let new_commitment = ctx
        .wallet()
        .get_private_account_commitment(&account_id)
        .context("Failed to get private account commitment")?;
    assert!(verify_commitment_is_in_state(new_commitment, ctx.sequencer_client()).await);

    let account = ctx
        .wallet()
        .get_account_private(&account_id)
        .context("Failed to get private account")?;

    assert_eq!(
        account.program_owner,
        Program::authenticated_transfer_program().id()
    );
    assert_eq!(account.balance, 0);
    assert!(account.data.is_empty());

    info!("Successfully initialized private account");

    Ok(())
}