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//! # QuestDB
//!
//! The questdb crate allows for a simple way of connecting to a questdb instance.
//!
//! # Usage
//! ```no-test
//! [dependencies]
//! questdb = "0.1"
//! ```
//!
//! # Example
//! ```no-test
//! use questdb::QuestDB;
//! use serde::{Serialize, Deserialize};
//!
//!
//! #[derive(Serialize, Deserialize, Debug)]
//! struct TestData {
//!     id: i32,
//!     ts: String,
//!     temp: f64,
//!     sensor_id: i32,
//! }
//!
//! #[tokio::main]
//! async fn main() {
//!     let connection = QuestDB::new("http://192.168.1.37:9000");
//!
//!     let res = connection.exec::<TestData>(
//!         "select * from readings",
//!         Some(2),
//!         None,
//!         None
//!     ).await.unwrap();
//!
//!     println!("{:#?}", res);
//!
//!     /* Output:
//!     [
//!         TestData {
//!             id: 1,
//!             ts: "2019-10-17T00:00:00.000000Z",
//!             temp: 16.470730545675295,
//!             sensor_id: 295,
//!         },
//!         TestData {
//!             id: 2,
//!             ts: "2019-10-17T00:00:00.100000Z",
//!             temp: 19.75780877621018,
//!             sensor_id: 9835,
//!         },
//!     ]
//!     */
//!
//! }
//!
//! ```

mod api;
mod error;
mod types;

/// Object to connect to a questdb
pub use api::QuestDB;

/// Custom error
pub use error::Error;

/// Schema types
pub use types::Schema;

use serde::Deserialize;

#[derive(Deserialize, Debug)]
struct TestData {
    id: i32,
    ts: String,
    temp: f64,
    sensor_id: i32,
}

#[cfg(test)]
mod tests {
    use crate::{
        api::QuestDB,
        TestData,
        new_schema,
        Schema,
    };
    use std::fs::File;

    #[tokio::test]
    async fn test_exec() {
        let connection = QuestDB::new("http://192.168.1.37:9000");
        let _res = match connection.exec::<TestData>("select * from nu_table", Some(5), None, None).await {
            Ok(res) => res,
            Err(e) => {
                println!("{}", e);
                return;
            }
        };
    }

    #[tokio::test]
    async fn test_imp() {
        let connection = QuestDB::new("http://192.168.1.37:9000");

        let schema = new_schema!(("movieId", Schema::String), ("imdbId", Schema::Int));

        let _res = match connection.imp(
            "./test.csv",
            Some(schema),
            "nu_table123",
            None,
            None,
            None,
        ).await {
            Ok(res) => res,
            Err(e) => {
                println!("{}", e);
                return;
            }
        };
    }

    #[tokio::test]
    async fn test_exp() {
        let connection = QuestDB::new("http://192.168.1.37:9000");

        let mut output_file = File::create("output.csv").unwrap();
        let _res = match connection.exp("select * from nu_table", Some(5), &mut output_file).await {
            Ok(res) => res,
            Err(e) => {
                println!("{}", e);
                return;
            }
        };
    }
}