use serde::Deserialize;
use vtse_common::stock::StockSymbol;
use vtse_common::user::{ApiKey, Password, Username};

#[derive(Deserialize, Debug, PartialEq)]
#[serde(untagged)]
pub(crate) enum ServerOperation {
    Query(QueryOperation),
    User(UserOperation),
    Market(MarketOperation),
}

#[derive(Deserialize, Debug, PartialEq)]
#[serde(tag = "type", rename_all = "snake_case")]
pub(crate) enum QueryOperation {
    StockInfo { stock: StockSymbol },
    User { username: Username },
}

#[derive(Deserialize, Debug, PartialEq)]
#[serde(tag = "type", rename_all = "snake_case")]
pub(crate) enum UserOperation {
    Login {
        api_key: ApiKey,
    },
    Register {
        username: Username,
        password: Password,
    },
    GetKey {
        username: Username,
        password: Password,
    },
}

#[derive(Deserialize, Debug, PartialEq)]
#[serde(tag = "type", rename_all = "snake_case")]
pub(crate) enum MarketOperation {
    Buy { symbol: StockSymbol, amount: usize },
    Sell { symbol: StockSymbol, amount: usize },
}

#[cfg(test)]
mod deserialize {
    use super::*;
    use serde_json::json;
    use std::str::FromStr;

    #[test]
    fn server_op_is_transparent() {
        assert_eq!(
            serde_json::from_value::<ServerOperation>(json!({
                "type": "stock_info",
                "stock": "Gura",
            }))
            .unwrap(),
            ServerOperation::Query(QueryOperation::StockInfo {
                stock: StockSymbol::from_str("Gura").unwrap()
            })
        )
    }

    #[test]
    fn query_op() {
        assert_eq!(
            serde_json::from_value::<QueryOperation>(json!({
                "type": "stock_info",
                "stock": "Gura",
            }))
            .unwrap(),
            QueryOperation::StockInfo {
                stock: StockSymbol::from_str("Gura").unwrap()
            }
        )
    }
}