use crate::error::{AndroidError, Result};

#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
pub struct VersionCode {
    major: u8,
    minor: u8,
    patch: u8,
}

impl VersionCode {
    pub fn new(major: u8, minor: u8, patch: u8) -> Self {
        Self {
            major,
            minor,
            patch,
        }
    }

    pub fn from_semver(version: &str) -> Result<Self> {
        let mut iter = version.split(|c1| ['.', '-', '+'].iter().any(|c2| c1 == *c2));
        let mut p = || {
            iter.next()
                .ok_or(AndroidError::InvalidSemver)?
                .parse()
                .map_err(|_| AndroidError::InvalidSemver)
        };
        Ok(Self::new(p()?, p()?, p()?))
    }

    pub fn to_code(&self, apk_id: u8) -> u32 {
        (apk_id as u32) << 24
            | (self.major as u32) << 16
            | (self.minor as u32) << 8
            | self.patch as u32
    }
}