use chrono::offset::{Local, TimeZone};
use chrono::{Date, Duration};
use plotters::prelude::*;
fn parse_time(t: &str) -> Date<Local> {
    Local
        .datetime_from_str(&format!("{} 0:0", t), "%Y-%m-%d %H:%M")
        .unwrap()
        .date()
}
const OUT_FILE_NAME: &str = "plotters-doc-data/stock.png";
fn main() -> Result<(), Box<dyn std::error::Error>> {
    let data = get_data();
    let root = BitMapBackend::new(OUT_FILE_NAME, (1024, 768)).into_drawing_area();
    root.fill(&WHITE)?;

    let (to_date, from_date) = (
        parse_time(data[0].0) + Duration::days(1),
        parse_time(data[29].0) - Duration::days(1),
    );

    let mut chart = ChartBuilder::on(&root)
        .x_label_area_size(40)
        .y_label_area_size(40)
        .caption("MSFT Stock Price", ("sans-serif", 50.0).into_font())
        .build_cartesian_2d(from_date..to_date, 110f32..135f32)?;

    chart.configure_mesh().light_line_style(WHITE).draw()?;

    chart.draw_series(
        data.iter().map(|x| {
            CandleStick::new(parse_time(x.0), x.1, x.2, x.3, x.4, GREEN.filled(), RED, 15)
        }),
    )?;

    // To avoid the IO failure being ignored silently, we manually call the present function
    root.present().expect("Unable to write result to file, please make sure 'plotters-doc-data' dir exists under current dir");
    println!("Result has been saved to {}", OUT_FILE_NAME);

    Ok(())
}

fn get_data() -> Vec<(&'static str, f32, f32, f32, f32)> {
    vec![
        ("2019-04-25", 130.06, 131.37, 128.83, 129.15),
        ("2019-04-24", 125.79, 125.85, 124.52, 125.01),
        ("2019-04-23", 124.1, 125.58, 123.83, 125.44),
        ("2019-04-22", 122.62, 124.0000, 122.57, 123.76),
        ("2019-04-18", 122.19, 123.52, 121.3018, 123.37),
        ("2019-04-17", 121.24, 121.85, 120.54, 121.77),
        ("2019-04-16", 121.64, 121.65, 120.1, 120.77),
        ("2019-04-15", 120.94, 121.58, 120.57, 121.05),
        ("2019-04-12", 120.64, 120.98, 120.37, 120.95),
        ("2019-04-11", 120.54, 120.85, 119.92, 120.33),
        ("2019-04-10", 119.76, 120.35, 119.54, 120.19),
        ("2019-04-09", 118.63, 119.54, 118.58, 119.28),
        ("2019-04-08", 119.81, 120.02, 118.64, 119.93),
        ("2019-04-05", 119.39, 120.23, 119.37, 119.89),
        ("2019-04-04", 120.1, 120.23, 118.38, 119.36),
        ("2019-04-03", 119.86, 120.43, 119.15, 119.97),
        ("2019-04-02", 119.06, 119.48, 118.52, 119.19),
        ("2019-04-01", 118.95, 119.1085, 118.1, 119.02),
        ("2019-03-29", 118.07, 118.32, 116.96, 117.94),
        ("2019-03-28", 117.44, 117.58, 116.13, 116.93),
        ("2019-03-27", 117.875, 118.21, 115.5215, 116.77),
        ("2019-03-26", 118.62, 118.705, 116.85, 117.91),
        ("2019-03-25", 116.56, 118.01, 116.3224, 117.66),
        ("2019-03-22", 119.5, 119.59, 117.04, 117.05),
        ("2019-03-21", 117.135, 120.82, 117.09, 120.22),
        ("2019-03-20", 117.39, 118.75, 116.71, 117.52),
        ("2019-03-19", 118.09, 118.44, 116.99, 117.65),
        ("2019-03-18", 116.17, 117.61, 116.05, 117.57),
        ("2019-03-15", 115.34, 117.25, 114.59, 115.91),
        ("2019-03-14", 114.54, 115.2, 114.33, 114.59),
    ]
}
#[test]
fn entry_point() {
    main().unwrap()
}