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pub mod error;
pub mod params;
pub mod traits;
use crate::params::{ClientParam, PoolParam};
use crate::traits::{PoolParams, StratumParams};
pub use error::Error;
use serde::{Deserialize, Deserializer, Serialize, Serializer};

pub type Result<T> = std::result::Result<T, Error>;

//There is definitely a better way to do this where request and response are generalized, and then
//when used in the pool we set params = PoolParams, and response sets ClientParams.
//@todo P1 Priority small, can be done later.

//Request Base Object
#[derive(Serialize, Deserialize)]
pub struct PoolRequest<PP, SP>
where
    PP: PoolParams,
    SP: StratumParams,
{
    pub id: String,
    pub method: StratumMethod,
    pub params: PoolParam<PP, SP>,
}

#[derive(Serialize, Deserialize)]
pub struct PoolResponse<PP, SP>
where
    PP: PoolParams,
    SP: StratumParams,
{
    pub method: StratumMethod,
    pub result: PoolParam<PP, SP>,
    pub error: Option<StratumError>,
}

#[derive(Serialize, Deserialize)]
pub struct ClientRequest<PP, SP>
where
    PP: PoolParams,
    SP: StratumParams,
{
    pub id: String,
    pub method: StratumMethod,
    pub params: ClientParam<PP, SP>,
}

#[derive(Serialize, Deserialize)]
pub struct ClientResponse<PP, SP>
where
    PP: PoolParams,
    SP: StratumParams,
{
    pub id: u32,
    pub method: StratumMethod,
    //@todo lets see if there is a simple way of deserializing this based on the stratum method
    //above. https://github.com/serde-rs/json/issues/181
    pub result: PoolParam<PP, SP>,
    pub error: Option<StratumError>,
}

//@todo this should just be an ENUM.
#[derive(Serialize, Deserialize, Debug)]
pub struct StratumError {
    //@todo I hate the fact that the error codes are negative - if there isn't a vlaid reason
    //That this is the case, then move this back to u32, and let's just use positive numbers.
    pub code: i32,
    pub message: String,
}

#[derive(Debug)]
pub enum StratumMethod {
    //Sending and receiving
    Authorize,
    Submit,
    Subscribe,
    Notify,

    //Future methods potentially not implemented yet.
    Unknown(String),
}

impl Serialize for StratumMethod {
    fn serialize<S>(&self, serializer: S) -> std::result::Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        serializer.serialize_str(match *self {
            StratumMethod::Authorize => "authorize",
            StratumMethod::Submit => "submit",
            StratumMethod::Subscribe => "subscribe",
            StratumMethod::Notify => "notify",
            StratumMethod::Unknown(ref s) => s,
        })
    }
}

impl<'de> Deserialize<'de> for StratumMethod {
    fn deserialize<D>(deserializer: D) -> std::result::Result<Self, D::Error>
    where
        D: Deserializer<'de>,
    {
        let s = String::deserialize(deserializer)?;
        Ok(match s.as_str() {
            "authorize" => StratumMethod::Authorize,
            "submit" => StratumMethod::Submit,
            "subscribe" => StratumMethod::Subscribe,
            "notify" => StratumMethod::Notify,
            _ => StratumMethod::Unknown(s),
        })
    }
}