use anyhow::Result;
use clap::Subcommand;
use common::transaction::NSSATransaction;
use nssa::Address;

use crate::{SubcommandReturnValue, WalletCore, cli::WalletSubcommand};

///Represents generic CLI subcommand for a wallet working with native token transfer program
#[derive(Subcommand, Debug, Clone)]
pub enum NativeTokenTransferProgramSubcommand {
    ///Send native token transfer from `from` to `to` for `amount`
    ///
    /// Public operation
    Public {
        ///from - valid 32 byte hex string
        #[arg(long)]
        from: String,
        ///to - valid 32 byte hex string
        #[arg(long)]
        to: String,
        ///amount - amount of balance to move
        #[arg(long)]
        amount: u128,
    },
    ///Private execution
    #[command(subcommand)]
    Private(NativeTokenTransferProgramSubcommandPrivate),
    ///Send native token transfer from `from` to `to` for `amount`
    ///
    /// Deshielded operation
    Deshielded {
        ///from - valid 32 byte hex string
        #[arg(long)]
        from: String,
        ///to - valid 32 byte hex string
        #[arg(long)]
        to: String,
        ///amount - amount of balance to move
        #[arg(long)]
        amount: u128,
    },
    ///Shielded execution
    #[command(subcommand)]
    Shielded(NativeTokenTransferProgramSubcommandShielded),
}

///Represents generic shielded CLI subcommand for a wallet working with native token transfer program
#[derive(Subcommand, Debug, Clone)]
pub enum NativeTokenTransferProgramSubcommandShielded {
    ///Send native token transfer from `from` to `to` for `amount`
    ///
    /// Shielded operation
    ShieldedOwned {
        ///from - valid 32 byte hex string
        #[arg(long)]
        from: String,
        ///to - valid 32 byte hex string
        #[arg(long)]
        to: String,
        ///amount - amount of balance to move
        #[arg(long)]
        amount: u128,
    },
    ///Send native token transfer from `from` to `to` for `amount`
    ///
    /// Shielded operation
    ShieldedForeign {
        ///from - valid 32 byte hex string
        #[arg(long)]
        from: String,
        ///to_npk - valid 32 byte hex string
        #[arg(long)]
        to_npk: String,
        ///to_ipk - valid 33 byte hex string
        #[arg(long)]
        to_ipk: String,
        ///amount - amount of balance to move
        #[arg(long)]
        amount: u128,
    },
}

///Represents generic private CLI subcommand for a wallet working with native token transfer program
#[derive(Subcommand, Debug, Clone)]
pub enum NativeTokenTransferProgramSubcommandPrivate {
    ///Send native token transfer from `from` to `to` for `amount`
    ///
    /// Private operation
    PrivateOwned {
        ///from - valid 32 byte hex string
        #[arg(long)]
        from: String,
        ///to - valid 32 byte hex string
        #[arg(long)]
        to: String,
        ///amount - amount of balance to move
        #[arg(long)]
        amount: u128,
    },
    ///Send native token transfer from `from` to `to` for `amount`
    ///
    /// Private operation
    PrivateForeign {
        ///from - valid 32 byte hex string
        #[arg(long)]
        from: String,
        ///to_npk - valid 32 byte hex string
        #[arg(long)]
        to_npk: String,
        ///to_ipk - valid 33 byte hex string
        #[arg(long)]
        to_ipk: String,
        ///amount - amount of balance to move
        #[arg(long)]
        amount: u128,
    },
}

impl WalletSubcommand for NativeTokenTransferProgramSubcommandPrivate {
    async fn handle_subcommand(
        self,
        wallet_core: &mut WalletCore,
    ) -> Result<SubcommandReturnValue> {
        match self {
            NativeTokenTransferProgramSubcommandPrivate::PrivateOwned { from, to, amount } => {
                let from: Address = from.parse().unwrap();
                let to: Address = to.parse().unwrap();

                let to_initialization = wallet_core.check_private_account_initialized(&to).await?;

                let (res, [secret_from, secret_to]) = if let Some(to_proof) = to_initialization {
                    wallet_core
                        .send_private_native_token_transfer_owned_account_already_initialized(
                            from, to, amount, to_proof,
                        )
                        .await?
                } else {
                    wallet_core
                        .send_private_native_token_transfer_owned_account_not_initialized(
                            from, to, amount,
                        )
                        .await?
                };

                println!("Results of tx send is {res:#?}");

                let tx_hash = res.tx_hash;
                let transfer_tx = wallet_core
                    .poll_native_token_transfer(tx_hash.clone())
                    .await?;

                if let NSSATransaction::PrivacyPreserving(tx) = transfer_tx {
                    let acc_decode_data = vec![(secret_from, from), (secret_to, to)];

                    wallet_core.decode_insert_privacy_preserving_transaction_results(
                        tx,
                        &acc_decode_data,
                    )?;
                }

                let path = wallet_core.store_persistent_accounts().await?;

                println!("Stored persistent accounts at {path:#?}");

                Ok(SubcommandReturnValue::PrivacyPreservingTransfer { tx_hash })
            }
            NativeTokenTransferProgramSubcommandPrivate::PrivateForeign {
                from,
                to_npk,
                to_ipk,
                amount,
            } => {
                let from: Address = from.parse().unwrap();
                let to_npk_res = hex::decode(to_npk)?;
                let mut to_npk = [0; 32];
                to_npk.copy_from_slice(&to_npk_res);
                let to_npk = nssa_core::NullifierPublicKey(to_npk);

                let to_ipk_res = hex::decode(to_ipk)?;
                let mut to_ipk = [0u8; 33];
                to_ipk.copy_from_slice(&to_ipk_res);
                let to_ipk =
                    nssa_core::encryption::shared_key_derivation::Secp256k1Point(to_ipk.to_vec());

                let (res, [secret_from, _]) = wallet_core
                    .send_private_native_token_transfer_outer_account(from, to_npk, to_ipk, amount)
                    .await?;

                println!("Results of tx send is {res:#?}");

                let tx_hash = res.tx_hash;
                let transfer_tx = wallet_core
                    .poll_native_token_transfer(tx_hash.clone())
                    .await?;

                if let NSSATransaction::PrivacyPreserving(tx) = transfer_tx {
                    let acc_decode_data = vec![(secret_from, from)];

                    wallet_core.decode_insert_privacy_preserving_transaction_results(
                        tx,
                        &acc_decode_data,
                    )?;
                }

                let path = wallet_core.store_persistent_accounts().await?;

                println!("Stored persistent accounts at {path:#?}");

                Ok(SubcommandReturnValue::PrivacyPreservingTransfer { tx_hash })
            }
        }
    }
}

impl WalletSubcommand for NativeTokenTransferProgramSubcommandShielded {
    async fn handle_subcommand(
        self,
        wallet_core: &mut WalletCore,
    ) -> Result<SubcommandReturnValue> {
        match self {
            NativeTokenTransferProgramSubcommandShielded::ShieldedOwned { from, to, amount } => {
                let from: Address = from.parse().unwrap();
                let to: Address = to.parse().unwrap();

                let to_initialization = wallet_core.check_private_account_initialized(&to).await?;

                let (res, secret) = if let Some(to_proof) = to_initialization {
                    wallet_core
                        .send_shielded_native_token_transfer_already_initialized(
                            from, to, amount, to_proof,
                        )
                        .await?
                } else {
                    wallet_core
                        .send_shielded_native_token_transfer_not_initialized(from, to, amount)
                        .await?
                };

                println!("Results of tx send is {res:#?}");

                let tx_hash = res.tx_hash;
                let transfer_tx = wallet_core
                    .poll_native_token_transfer(tx_hash.clone())
                    .await?;

                if let NSSATransaction::PrivacyPreserving(tx) = transfer_tx {
                    let acc_decode_data = vec![(secret, to)];

                    wallet_core.decode_insert_privacy_preserving_transaction_results(
                        tx,
                        &acc_decode_data,
                    )?;
                }

                let path = wallet_core.store_persistent_accounts().await?;

                println!("Stored persistent accounts at {path:#?}");

                Ok(SubcommandReturnValue::PrivacyPreservingTransfer { tx_hash })
            }
            NativeTokenTransferProgramSubcommandShielded::ShieldedForeign {
                from,
                to_npk,
                to_ipk,
                amount,
            } => {
                let from: Address = from.parse().unwrap();

                let to_npk_res = hex::decode(to_npk)?;
                let mut to_npk = [0; 32];
                to_npk.copy_from_slice(&to_npk_res);
                let to_npk = nssa_core::NullifierPublicKey(to_npk);

                let to_ipk_res = hex::decode(to_ipk)?;
                let mut to_ipk = [0u8; 33];
                to_ipk.copy_from_slice(&to_ipk_res);
                let to_ipk =
                    nssa_core::encryption::shared_key_derivation::Secp256k1Point(to_ipk.to_vec());

                let (res, _) = wallet_core
                    .send_shielded_native_token_transfer_outer_account(from, to_npk, to_ipk, amount)
                    .await?;

                println!("Results of tx send is {res:#?}");

                let tx_hash = res.tx_hash;

                let path = wallet_core.store_persistent_accounts().await?;

                println!("Stored persistent accounts at {path:#?}");

                Ok(SubcommandReturnValue::PrivacyPreservingTransfer { tx_hash })
            }
        }
    }
}

impl WalletSubcommand for NativeTokenTransferProgramSubcommand {
    async fn handle_subcommand(
        self,
        wallet_core: &mut WalletCore,
    ) -> Result<SubcommandReturnValue> {
        match self {
            NativeTokenTransferProgramSubcommand::Private(private_subcommand) => {
                private_subcommand.handle_subcommand(wallet_core).await
            }
            NativeTokenTransferProgramSubcommand::Shielded(shielded_subcommand) => {
                shielded_subcommand.handle_subcommand(wallet_core).await
            }
            NativeTokenTransferProgramSubcommand::Deshielded { from, to, amount } => {
                let from: Address = from.parse().unwrap();
                let to: Address = to.parse().unwrap();

                let (res, secret) = wallet_core
                    .send_deshielded_native_token_transfer(from, to, amount)
                    .await?;

                println!("Results of tx send is {res:#?}");

                let tx_hash = res.tx_hash;
                let transfer_tx = wallet_core
                    .poll_native_token_transfer(tx_hash.clone())
                    .await?;

                if let NSSATransaction::PrivacyPreserving(tx) = transfer_tx {
                    let acc_decode_data = vec![(secret, from)];

                    wallet_core.decode_insert_privacy_preserving_transaction_results(
                        tx,
                        &acc_decode_data,
                    )?;
                }

                let path = wallet_core.store_persistent_accounts().await?;

                println!("Stored persistent accounts at {path:#?}");

                Ok(SubcommandReturnValue::PrivacyPreservingTransfer { tx_hash })
            }
            NativeTokenTransferProgramSubcommand::Public { from, to, amount } => {
                let from: Address = from.parse().unwrap();
                let to: Address = to.parse().unwrap();

                let res = wallet_core
                    .send_public_native_token_transfer(from, to, amount)
                    .await?;

                println!("Results of tx send is {res:#?}");

                let transfer_tx = wallet_core.poll_native_token_transfer(res.tx_hash).await?;

                println!("Transaction data is {transfer_tx:?}");

                let path = wallet_core.store_persistent_accounts().await?;

                println!("Stored persistent accounts at {path:#?}");

                Ok(SubcommandReturnValue::Empty)
            }
        }
    }
}