nostrstore 0.2.3

nostrstore is a lightweight, decentralized key-value store designed to work seamlessly with the Nostr protocol
Documentation 
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use super::Operation;

/// An operation that can be applied to a counter, such as incrementing or decrementing it.
/// This enum implements the Operation trait, allowing it to be used with the Database.
pub enum CounterEvent {
    Increment,
    Decrement,
}

impl Operation for CounterEvent {
    type Value = i64;

    fn default() -> i64 {
        0
    }

    fn deserialize(value: String) -> Result<Self, Box<dyn std::error::Error>> {
        match value.as_str() {
            "increment" => Ok(Self::Increment),
            "decrement" => Ok(Self::Decrement),
            _ => Err(format!("Invalid operation: {}", value).into()),
        }
    }

    fn serialize(&self) -> Result<String, Box<dyn std::error::Error>> {
        Ok(
            match self {
                Self::Increment => "increment".to_string(),
                Self::Decrement => "decrement".to_string(),
            }
        )
    }

    fn apply(&self, value: i64) -> i64 {
        match self {
            Self::Increment => value + 1,
            Self::Decrement => value - 1,
        }
    }
}