use std::{path::PathBuf, time::Duration};

use actix_web::dev::ServerHandle;
use anyhow::Result;
use clap::Parser;
use common::sequencer_client::SequencerClient;
use log::{info, warn};
use sequencer_core::config::SequencerConfig;
use sequencer_runner::startup_sequencer;
use tempfile::TempDir;
use tokio::task::JoinHandle;
use wallet::{
    Command,
    helperfunctions::{fetch_config, fetch_persistent_accounts},
};

#[derive(Parser, Debug)]
#[clap(version)]
struct Args {
    /// Path to configs
    home_dir: PathBuf,
    /// Test name
    test_name: String,
}

pub const ACC_SENDER: &str = "1b84c5567b126440995d3ed5aaba0565d71e1834604819ff9c17f5e9d5dd078f";
pub const ACC_RECEIVER: &str = "4d4b6cd1361032ca9bd2aeb9d900aa4d45d9ead80ac9423374c451a7254d0766";

pub const TIME_TO_WAIT_FOR_BLOCK_SECONDS: u64 = 12;

#[allow(clippy::type_complexity)]
pub async fn pre_test(
    home_dir: PathBuf,
) -> Result<(ServerHandle, JoinHandle<Result<()>>, TempDir)> {
    let home_dir_sequencer = home_dir.join("sequencer");

    let mut sequencer_config =
        sequencer_runner::config::from_file(home_dir_sequencer.join("sequencer_config.json"))
            .unwrap();

    let temp_dir_sequencer = replace_home_dir_with_temp_dir_in_configs(&mut sequencer_config);

    let (seq_http_server_handle, sequencer_loop_handle) =
        startup_sequencer(sequencer_config).await?;

    Ok((
        seq_http_server_handle,
        sequencer_loop_handle,
        temp_dir_sequencer,
    ))
}

pub fn replace_home_dir_with_temp_dir_in_configs(
    sequencer_config: &mut SequencerConfig,
) -> TempDir {
    let temp_dir_sequencer = tempfile::tempdir().unwrap();

    sequencer_config.home = temp_dir_sequencer.path().to_path_buf();

    temp_dir_sequencer
}

#[allow(clippy::type_complexity)]
pub async fn post_test(residual: (ServerHandle, JoinHandle<Result<()>>, TempDir)) {
    let (seq_http_server_handle, sequencer_loop_handle, _) = residual;

    info!("Cleanup");

    sequencer_loop_handle.abort();
    seq_http_server_handle.stop(true).await;

    let wallet_home = wallet::helperfunctions::get_home().unwrap();
    let persistent_data_home = wallet_home.join("curr_accounts.json");

    //Removing persistent accounts after run to not affect other executions
    //Not necessary an error, if fails as there is tests for failure scenario
    let _ = std::fs::remove_file(persistent_data_home)
        .inspect_err(|err| warn!("Failed to remove persistent data with err {err:#?}"));

    //At this point all of the references to sequencer_core must be lost.
    //So they are dropped and tempdirs will be dropped too,
}

pub async fn test_success() {
    let command = Command::SendNativeTokenTransfer {
        from: ACC_SENDER.to_string(),
        nonce: 0,
        to: ACC_RECEIVER.to_string(),
        amount: 100,
    };

    let wallet_config = fetch_config().unwrap();

    let seq_client = SequencerClient::new(wallet_config.sequencer_addr.clone()).unwrap();

    wallet::execute_subcommand(command).await.unwrap();

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

    info!("Checking correct balance move");
    let acc_1_balance = seq_client
        .get_account_balance(ACC_SENDER.to_string())
        .await
        .unwrap();
    let acc_2_balance = seq_client
        .get_account_balance(ACC_RECEIVER.to_string())
        .await
        .unwrap();

    info!("Balance of sender : {acc_1_balance:#?}");
    info!("Balance of receiver : {acc_2_balance:#?}");

    assert_eq!(acc_1_balance.balance, 9900);
    assert_eq!(acc_2_balance.balance, 20100);

    info!("Success!");
}

pub async fn test_success_move_to_another_account() {
    let command = Command::RegisterAccount {};

    let wallet_config = fetch_config().unwrap();

    let seq_client = SequencerClient::new(wallet_config.sequencer_addr.clone()).unwrap();

    wallet::execute_subcommand(command).await.unwrap();

    let persistent_accounts = fetch_persistent_accounts().unwrap();

    let mut new_persistent_account_addr = String::new();

    for per_acc in persistent_accounts {
        if (per_acc.address.to_string() != ACC_RECEIVER)
            && (per_acc.address.to_string() != ACC_SENDER)
        {
            new_persistent_account_addr = per_acc.address.to_string();
        }
    }

    if new_persistent_account_addr == String::new() {
        panic!("Failed to produce new account, not present in persistent accounts");
    }

    let command = Command::SendNativeTokenTransfer {
        from: ACC_SENDER.to_string(),
        nonce: 0,
        to: new_persistent_account_addr.clone(),
        amount: 100,
    };

    wallet::execute_subcommand(command).await.unwrap();

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

    info!("Checking correct balance move");
    let acc_1_balance = seq_client
        .get_account_balance(ACC_SENDER.to_string())
        .await
        .unwrap();
    let acc_2_balance = seq_client
        .get_account_balance(new_persistent_account_addr)
        .await
        .unwrap();

    info!("Balance of sender : {acc_1_balance:#?}");
    info!("Balance of receiver : {acc_2_balance:#?}");

    assert_eq!(acc_1_balance.balance, 9900);
    assert_eq!(acc_2_balance.balance, 100);

    info!("Success!");
}

pub async fn test_failure() {
    let command = Command::SendNativeTokenTransfer {
        from: ACC_SENDER.to_string(),
        nonce: 0,
        to: ACC_RECEIVER.to_string(),
        amount: 1000000,
    };

    let wallet_config = fetch_config().unwrap();

    let seq_client = SequencerClient::new(wallet_config.sequencer_addr.clone()).unwrap();

    let failed_send = wallet::execute_subcommand(command).await;

    assert!(failed_send.is_err());

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

    info!("Checking correct balance move");
    let acc_1_balance = seq_client
        .get_account_balance(ACC_SENDER.to_string())
        .await
        .unwrap();
    let acc_2_balance = seq_client
        .get_account_balance(ACC_RECEIVER.to_string())
        .await
        .unwrap();

    info!("Balance of sender : {acc_1_balance:#?}");
    info!("Balance of receiver : {acc_2_balance:#?}");

    assert_eq!(acc_1_balance.balance, 10000);
    assert_eq!(acc_2_balance.balance, 20000);

    info!("Success!");
}

pub async fn test_success_two_transactions() {
    let command = Command::SendNativeTokenTransfer {
        from: ACC_SENDER.to_string(),
        nonce: 0,
        to: ACC_RECEIVER.to_string(),
        amount: 100,
    };

    let wallet_config = fetch_config().unwrap();

    let seq_client = SequencerClient::new(wallet_config.sequencer_addr.clone()).unwrap();

    wallet::execute_subcommand(command).await.unwrap();

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

    info!("Checking correct balance move");
    let acc_1_balance = seq_client
        .get_account_balance(ACC_SENDER.to_string())
        .await
        .unwrap();
    let acc_2_balance = seq_client
        .get_account_balance(ACC_RECEIVER.to_string())
        .await
        .unwrap();

    info!("Balance of sender : {acc_1_balance:#?}");
    info!("Balance of receiver : {acc_2_balance:#?}");

    assert_eq!(acc_1_balance.balance, 9900);
    assert_eq!(acc_2_balance.balance, 20100);

    info!("First TX Success!");

    let command = Command::SendNativeTokenTransfer {
        from: ACC_SENDER.to_string(),
        nonce: 1,
        to: ACC_RECEIVER.to_string(),
        amount: 100,
    };

    wallet::execute_subcommand(command).await.unwrap();

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

    info!("Checking correct balance move");
    let acc_1_balance = seq_client
        .get_account_balance(ACC_SENDER.to_string())
        .await
        .unwrap();
    let acc_2_balance = seq_client
        .get_account_balance(ACC_RECEIVER.to_string())
        .await
        .unwrap();

    info!("Balance of sender : {acc_1_balance:#?}");
    info!("Balance of receiver : {acc_2_balance:#?}");

    assert_eq!(acc_1_balance.balance, 9800);
    assert_eq!(acc_2_balance.balance, 20200);

    info!("Second TX Success!");
}

macro_rules! test_cleanup_wrap {
    ($home_dir:ident, $test_func:ident) => {{
        let res = pre_test($home_dir.clone()).await.unwrap();

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

        $test_func().await;

        post_test(res).await;
    }};
}

pub async fn main_tests_runner() -> Result<()> {
    env_logger::init();

    let args = Args::parse();
    let Args {
        home_dir,
        test_name,
    } = args;

    match test_name.as_str() {
        "test_success_move_to_another_account" => {
            test_cleanup_wrap!(home_dir, test_success_move_to_another_account);
        }
        "test_success" => {
            test_cleanup_wrap!(home_dir, test_success);
        }
        "test_failure" => {
            test_cleanup_wrap!(home_dir, test_failure);
        }
        "test_success_two_transactions" => {
            test_cleanup_wrap!(home_dir, test_success_two_transactions);
        }
        "all" => {
            test_cleanup_wrap!(home_dir, test_success_move_to_another_account);
            test_cleanup_wrap!(home_dir, test_success);
            test_cleanup_wrap!(home_dir, test_failure);
            test_cleanup_wrap!(home_dir, test_success_two_transactions);
        }
        _ => {
            anyhow::bail!("Unknown test name");
        }
    }

    Ok(())
}