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use qrcode::{EcLevel, QrCode, Version};
use qrcode::render::{svg, unicode};
use image::Luma;
/// 生成 string 二维码
pub fn qrcode_create_string(text: &str) -> String {
    let code = QrCode::new(text).unwrap();
    let string = code.render::<char>()
        .quiet_zone(false)
        .module_dimensions(2, 1)
        .build();
    string
}

/// 生成 Unicode 二维码
pub fn qrcode_create_unicode(text: &str) -> String {
    let code = QrCode::new(text).unwrap();
    let string = code.render::<unicode::Dense1x2>()
        .dark_color(unicode::Dense1x2::Light)
        .light_color(unicode::Dense1x2::Dark)
        .build();
    string
}

/// 生成 svg 二维码
pub fn qrcode_create_svg(text: &str) -> String {
    let code = QrCode::with_version(text, Version::Micro(2), EcLevel::L).unwrap();
    let image = code.render()
        .min_dimensions(200, 200)
        .dark_color(svg::Color("#800000"))
        .light_color(svg::Color("#ffff80"))
        .build();
    image
}


/// 生成 png 二维码
pub fn qrcode_create_png(text: &str, filename: &str) -> bool {
    let code = QrCode::new(text).unwrap();
    let image = code.render::<Luma<u8>>()
        .min_dimensions(200, 200)
        .build();
    match image.save(filename) {
        Ok(()) => true,
        Err(_) => false
    }
}