use redis::{
    Client,
    Connection,
    Commands
};
use ron::de::from_str;

pub type Line = Vec<(f32,f32,u32)>;

pub struct RedisCtrl {
    pub client: Client,
    pub connection: Connection
}

impl RedisCtrl {

    pub fn new() -> Result<Self, Box<dyn std::error::Error>> {
	let client = Client::open("redis://127.0.0.1/")?;
	let connection = client.get_connection()?;
	Ok(RedisCtrl { client, connection })
    }

    pub fn get(
	&mut self,
	key: &str
    ) -> Result<Line, Box<dyn std::error::Error>> {
	let val : String = self.connection.get(key)?;
	let line : Line = from_str(&val)?;
	Ok(line)
    }
}