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use std::ops::{Mul, Sub};
use borsh::{BorshDeserialize, BorshSerialize};
use solana_client::rpc_client::RpcClient;
use solana_program::instruction::{AccountMeta, Instruction};
use solana_program::pubkey::Pubkey;
use spl_associated_token_account::get_associated_token_address;
use spl_token::{amount_to_ui_amount, ui_amount_to_amount};
use crate::client::get_decimals;
use crate::clmmpool::pair::create_tick_array::calculate_tick_array_key;
use crate::command::{CliConfig};
use crate::contract::state::{Clmmpool, TickArray};
use crate::contract::state::position::Position;
use crate::math::{get_amount_from_liquidity, get_liquidity_from_amount};

use crate::program::{get_pubkey_for_program_with_seeds, PROGRAM_ID};
use crate::utils::sighash;

#[derive(BorshSerialize, BorshDeserialize, PartialEq, Debug, Clone)]
pub struct DecreaseLiquidityArgs {
    pub delta_liquidity: u128,
    pub token_a_min: u64,
    pub token_b_min: u64,
}

#[allow(clippy::too_many_arguments)]
pub fn new_decrease_liquidity(
    clmmpool: &Pubkey,
    position: &Pubkey,
    position_ata: &Pubkey,
    token_a_ata: &Pubkey,
    token_b_ata: &Pubkey,
    token_a_value: &Pubkey,
    token_b_value: &Pubkey,
    tick_array_lower: &Pubkey,
    tick_array_upper: &Pubkey,
    tick_array_map: &Pubkey,
    delta_liquidity: &u128,
    token_a_min: &u64,
    token_b_min: &u64,
    payer: Pubkey,
) -> Instruction {
    let data = &DecreaseLiquidityArgs {
        delta_liquidity: *delta_liquidity,
        token_a_min: *token_a_min,
        token_b_min: *token_b_min,
    };

    let mut dsa = data.try_to_vec().unwrap();
    let mut distor = sighash::sighash("global", "decrease_liquidity").to_vec();
    distor.append(&mut dsa);

    Instruction {
        program_id: PROGRAM_ID,
        accounts: vec![
            AccountMeta::new(payer, true),
            AccountMeta::new(*clmmpool, false),
            AccountMeta::new(*position, false),
            AccountMeta::new_readonly(*position_ata, false),
            AccountMeta::new(*token_a_ata, false),
            AccountMeta::new(*token_b_ata, false),
            AccountMeta::new(*token_a_value, false),
            AccountMeta::new(*token_b_value, false),
            AccountMeta::new(*tick_array_lower, false),
            AccountMeta::new(*tick_array_upper, false),
            AccountMeta::new(*tick_array_map, false),
            AccountMeta::new_readonly(spl_token::id(), false),
        ],
        data: distor,
    }
}

#[allow(unused_assignments)]
pub fn new_decrease_liquidity_tx(
    rpc_client: &RpcClient,
    config: &CliConfig,
    mint: &Pubkey,
    amount_a: &f64,
    amount_b: &f64,
    liquidity: &u128,
    slid: &f64,
) -> Instruction {
    let (position, _) = get_pubkey_for_program_with_seeds(&[b"position", mint.as_ref()]);
    let position_info = Position::get_info(rpc_client, &position);
    let clmmpool_info = Clmmpool::get_info(rpc_client, &position_info.clmmpool);
    let token_a_decimals = get_decimals(rpc_client, &clmmpool_info.token_a);
    let token_b_decimals = get_decimals(rpc_client, &clmmpool_info.token_b);
    let token_a_ata =
        get_associated_token_address(&config.pubkey().unwrap(), &clmmpool_info.token_a);
    let token_b_ata =
        get_associated_token_address(&config.pubkey().unwrap(), &clmmpool_info.token_b);
    let position_ata =
        get_associated_token_address(&config.pubkey().unwrap(), &position_info.position_nft_mint);
    let (tick_array_map_pubkey, _) =
        get_pubkey_for_program_with_seeds(&[b"tick_array_map", position_info.clmmpool.as_ref()]);

    let array_lower_index =
        TickArray::array_index(position_info.tick_lower_index, clmmpool_info.tick_spacing).unwrap();
    let (tick_array_lower_pubkey, _) = calculate_tick_array_key(
        position_info.clmmpool.as_ref(),
        array_lower_index.to_le_bytes().as_ref(),
    );

    let array_upper_index =
        TickArray::array_index(position_info.tick_upper_index, clmmpool_info.tick_spacing).unwrap();
    let (tick_array_upper_pubkey, _) = calculate_tick_array_key(
        position_info.clmmpool.as_ref(),
        array_upper_index.to_le_bytes().as_ref(),
    );

    let amount_a_lamport = ui_amount_to_amount(*amount_a, token_a_decimals);
    let amount_b_lamport = ui_amount_to_amount(*amount_b, token_b_decimals);

    let (mut delta_liquidity, mut token_a_amount, mut token_b_amount) = (0u128, 0u64, 0u64);

    if *liquidity == 0 {
        (delta_liquidity, token_a_amount, token_b_amount) = get_liquidity_from_amount(
            position_info.tick_lower_index,
            position_info.tick_upper_index,
            clmmpool_info.current_tick_index,
            clmmpool_info.current_sqrt_price,
            amount_a_lamport,
            amount_b_lamport,
        ).unwrap();
    } else {
        delta_liquidity = *liquidity;
        (token_a_amount, token_b_amount) = get_amount_from_liquidity(
            position_info.tick_lower_index,
            position_info.tick_upper_index,
            *liquidity,
            clmmpool_info.current_tick_index,
            clmmpool_info.current_sqrt_price
        ).unwrap();
    }

    println!(
        "delta_liquidity:{}| a: {}|b: {}",
        delta_liquidity, token_a_amount, token_b_amount
    );

    let ui_amount_a = amount_to_ui_amount(token_a_amount, token_a_decimals);
    let ui_amount_b = amount_to_ui_amount(token_b_amount, token_b_decimals);

    let token_a_min = ui_amount_to_amount(ui_amount_a.mul(slid.sub(1_f64)), token_a_decimals);
    let token_b_min = ui_amount_to_amount(ui_amount_b.mul(slid.sub(1_f64)), token_b_decimals);
    new_decrease_liquidity(
        &position_info.clmmpool,
        &position,
        &position_ata,
        &token_a_ata,
        &token_b_ata,
        &clmmpool_info.token_a_vault,
        &clmmpool_info.token_b_vault,
        &tick_array_lower_pubkey,
        &tick_array_upper_pubkey,
        &tick_array_map_pubkey,
        &delta_liquidity,
        &token_a_min,
        &token_b_min,
        config.pubkey().unwrap(),
    )
}