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use actix_web::{get, HttpResponse, Responder};
use serde::Deserialize;
use solana_sdk::pubkey::Pubkey;
use std::str::FromStr;

pub fn env(var: &str) -> String {
    std::env::var(var).unwrap_or_else(|_| panic!("{} env var not set", var))
}

pub fn lamports_to_sol(lamports: u64) -> f64 {
    lamports as f64 / 1000000000.0
}

pub fn sol_to_lamports(sol: f64) -> u64 {
    (sol * 1000000000.0) as u64
}

#[get("/healthz")]
pub async fn healthz() -> impl Responder {
    HttpResponse::Ok().body("im ok")
}

/// Helper function for pubkey serialize
pub fn pubkey_to_string<S>(
    pubkey: &Pubkey,
    serializer: S,
) -> Result<S::Ok, S::Error>
where
    S: serde::Serializer,
{
    serializer.serialize_str(&pubkey.to_string())
}

/// Helper function for pubkey deserialize
pub fn string_to_pubkey<'de, D>(deserializer: D) -> Result<Pubkey, D::Error>
where
    D: serde::Deserializer<'de>,
{
    let s = String::deserialize(deserializer)?;
    Pubkey::from_str(&s).map_err(serde::de::Error::custom)
}

pub fn max(a: f64, b: f64) -> f64 {
    if a > b {
        a
    } else {
        b
    }
}

pub fn string_to_u64<'de, D>(deserializer: D) -> Result<u64, D::Error>
where
    D: serde::Deserializer<'de>,
{
    let s: String = Deserialize::deserialize(deserializer)?;
    s.parse().map_err(serde::de::Error::custom)
}