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use anchor_client::{solana_sdk::pubkey::Pubkey, Client, ClientError};
use anyhow::{anyhow, Result};
pub use mpl_candy_machine::ID as CANDY_MACHINE_ID;
use mpl_candy_machine::{
    constants::FREEZE_FEATURE_INDEX, is_feature_active, CandyMachine, CandyMachineData, FreezePDA,
    WhitelistMintMode, WhitelistMintSettings,
};
use spl_token::id as token_program_id;

use crate::{
    common::FloatConversionError,
    config::{data::SugarConfig, price_as_lamports, ConfigData},
    pdas::find_freeze_pda,
    setup::setup_client,
    utils::{check_spl_token, f64_to_u64_safe},
};

// To test a custom candy machine program, comment the mpl_candy_machine::ID line
// above and use the following lines to declare the id to use:
//
//use solana_program::declare_id;
//declare_id!("<YOUR CANDY MACHINE ID>");
//pub use self::ID as CANDY_MACHINE_ID;

#[derive(Debug)]
pub struct ConfigStatus {
    pub index: u32,
    pub on_chain: bool,
}

pub fn parse_config_price(client: &Client, config: &ConfigData) -> Result<u64> {
    let parsed_price = if let Some(spl_token) = config.spl_token {
        let token_program = client.program(token_program_id());
        let token_mint = check_spl_token(&token_program, &spl_token.to_string())?;

        let mutliplier = 10f64.powf(token_mint.decimals as f64);
        let config_price_base_units = config.price * mutliplier;

        match f64_to_u64_safe(config_price_base_units) {
            Ok(price) => price,
            Err(e) => {
                match e {
                    FloatConversionError::Fractional => {
                        return Err(anyhow!(
                            "Can't convert price to u64: price may have more decimals than SPL token. Price: {}, decimals: {}.",
                            config.price,
                            token_mint.decimals
                        ))
                    },
                    FloatConversionError::Overflow => {
                        return Err(anyhow!(
                            "Can't convert price to u64 because of overflow: price is too large or too many SPL token decimals. Price: {}, decimals: {}.",
                            config.price,
                            token_mint.decimals
                        ))
                    },
                }
            }
        }
    } else {
        price_as_lamports(config.price)
    };

    Ok(parsed_price)
}

pub fn get_candy_machine_state(
    sugar_config: &SugarConfig,
    candy_machine_id: &Pubkey,
) -> Result<CandyMachine> {
    let client = setup_client(sugar_config)?;
    let program = client.program(CANDY_MACHINE_ID);

    program.account(*candy_machine_id).map_err(|e| match e {
        ClientError::AccountNotFound => anyhow!("Candy Machine does not exist!"),
        _ => anyhow!(
            "Failed to deserialize Candy Machine account {}: {}",
            candy_machine_id.to_string(),
            e
        ),
    })
}

pub fn get_candy_machine_data(
    sugar_config: &SugarConfig,
    candy_machine_id: &Pubkey,
) -> Result<CandyMachineData> {
    let candy_machine = get_candy_machine_state(sugar_config, candy_machine_id)?;
    Ok(candy_machine.data)
}

pub fn is_freeze_enabled(sugar_config: &SugarConfig, candy_machine_id: &Pubkey) -> Result<bool> {
    let client = setup_client(sugar_config)?;
    let _program = client.program(CANDY_MACHINE_ID);

    let candy_machine_data = get_candy_machine_data(sugar_config, candy_machine_id)?;

    Ok(is_feature_active(
        &candy_machine_data.uuid,
        FREEZE_FEATURE_INDEX,
    ))
}

pub fn get_freeze_pda_account(
    sugar_config: &SugarConfig,
    candy_machine_id: &Pubkey,
) -> Result<FreezePDA> {
    let client = setup_client(sugar_config)?;
    let program = client.program(CANDY_MACHINE_ID);

    let (pda, _) = find_freeze_pda(candy_machine_id);

    program.account(pda).map_err(|e| match e {
        ClientError::AccountNotFound => anyhow!("Freeze PDA does not exist!"),
        _ => anyhow!(
            "Failed to deserialize Freeze PDA account {}: {}",
            pda.to_string(),
            e
        ),
    })
}

pub fn print_candy_machine_state(state: CandyMachine) {
    println!("Authority {:?}", state.authority);
    println!("Wallet {:?}", state.wallet);
    println!("Token mint: {:?}", state.token_mint);
    println!("Items redeemed: {:?}", state.items_redeemed);
    print_candy_machine_data(&state.data);
}

pub fn print_candy_machine_data(data: &CandyMachineData) {
    println!("Uuid: {:?}", data.uuid);
    println!("Price: {:?}", data.price);
    println!("Symbol: {:?}", data.symbol);
    println!(
        "Seller fee basis points: {:?}",
        data.seller_fee_basis_points
    );
    println!("Max supply: {:?}", data.max_supply);
    println!("Is mutable: {:?}", data.is_mutable);
    println!("Retain Authority: {:?}", data.retain_authority);
    println!("Go live date: {:?}", data.go_live_date);
    println!("Items available: {:?}", data.items_available);

    print_whitelist_mint_settings(&data.whitelist_mint_settings);
}

fn print_whitelist_mint_settings(settings: &Option<WhitelistMintSettings>) {
    if let Some(settings) = settings {
        match settings.mode {
            WhitelistMintMode::BurnEveryTime => println!("Mode: Burn every time"),
            WhitelistMintMode::NeverBurn => println!("Mode: Never burn"),
        }
        println!("Mint: {:?}", settings.mint);
        println!("Presale: {:?}", settings.presale);
        println!("Discount price: {:?}", settings.discount_price);
    } else {
        println!("No whitelist mint settings");
    }
}