// Image + ImageSet + ResolutionLevel. Mirrors NPE Image.java.
//
// HEIGHT_UNKNOWN / WIDTH_UNKNOWN are -1 sentinels — kept as i32, not
// Option<u32>, because several JSON output sites encode this directly.

pub const HEIGHT_UNKNOWN: i32 = -1;
pub const WIDTH_UNKNOWN: i32 = -1;

#[derive(Clone, Copy, Debug, Eq, PartialEq, Hash)]
pub enum ResolutionLevel {
    Low,
    Medium,
    High,
    Unknown,
}

impl ResolutionLevel {
    pub fn from_height(height: i32) -> Self {
        if height == HEIGHT_UNKNOWN {
            ResolutionLevel::Unknown
        } else if height <= 175 {
            ResolutionLevel::Low
        } else if height <= 720 {
            ResolutionLevel::Medium
        } else {
            ResolutionLevel::High
        }
    }
}

#[derive(Clone, Debug)]
pub struct Image {
    url: String,
    height: i32,
    width: i32,
    estimated_resolution_level: ResolutionLevel,
}

impl Image {
    pub fn new(
        url: impl Into<String>,
        height: i32,
        width: i32,
        estimated_resolution_level: ResolutionLevel,
    ) -> Self {
        Self {
            url: url.into(),
            height,
            width,
            estimated_resolution_level,
        }
    }

    pub fn url(&self) -> &str {
        &self.url
    }

    pub fn height(&self) -> i32 {
        self.height
    }

    pub fn width(&self) -> i32 {
        self.width
    }

    pub fn estimated_resolution_level(&self) -> ResolutionLevel {
        self.estimated_resolution_level
    }
}

pub type ImageSet = Vec<Image>;