use serde::Deserialize;
use vtse_common::stock::StockName;

#[derive(Deserialize, Debug, PartialEq)]
#[serde(untagged)]
pub(crate) enum ServerOperation {
    Query(QueryOperation),
    Meta(MetaOperation),
}

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

#[derive(Deserialize, Debug, PartialEq)]
#[serde(tag = "type", rename_all = "snake_case")]
pub(crate) enum MetaOperation {
    Register { username: String, password: String },
}

#[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: StockName::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: StockName::from_str("Gura").unwrap()
            }
        )
    }
}