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use std::str::FromStr;

use borsh::{BorshDeserialize, BorshSerialize};
use solana_program::instruction::{AccountMeta, Instruction};
use solana_program::pubkey::Pubkey;

use crate::clmmpool::pair::create_fee_tier::FeeTierTemplate;
use crate::program::PROGRAM_ID;
use crate::utils::sighash;

#[derive(BorshSerialize, BorshDeserialize, PartialEq, Debug, Clone)]
pub struct CreateFeeTierArgs {
    pub tick_spacing: u16,
    pub fee_rate: u16,
}

pub fn new_create_fee_tier(
    template: &FeeTierTemplate,
    fee_rate: u16,
    fee_tier_pubkey: Pubkey,
    payer: Pubkey,
) -> Instruction {
    let data = &CreateFeeTierArgs {
        tick_spacing: template.tick_spacing,
        fee_rate,
    };
    let mut dsa = data.try_to_vec().unwrap();
    let mut distor = sighash::sighash("global", "create_fee_tier").to_vec();

    distor.append(&mut dsa);

    Instruction {
        program_id: PROGRAM_ID,
        accounts: vec![
            AccountMeta::new(payer, true),
            AccountMeta::new_readonly(Pubkey::from_str(template.clmm_config.as_str()).unwrap(), false),
            AccountMeta::new(fee_tier_pubkey, false),
            AccountMeta::new_readonly(Pubkey::from_str(template.fee_authority.as_str()).unwrap(), true),
            AccountMeta::new_readonly(solana_program::sysvar::rent::id(), false),
            AccountMeta::new_readonly(solana_program::system_program::id(), false),
        ],
        data: distor,
    }
}