jap_learn/src/data.rs

pub mod entities;
pub mod repositories;

use rusqlite::ToSql;
use rusqlite::types::{FromSql, FromSqlError, FromSqlResult, ToSqlOutput, ValueRef};
use std::fmt::{Display, Formatter};
use std::num::ParseIntError;
use std::str::FromStr;

#[derive(Clone, PartialEq, Eq, Debug, Hash, Copy, Ord, PartialOrd, Default)]
pub struct Id(pub(crate) u32);
pub const INVALID_ID: Id = Id(0);
impl FromStr for Id {
    type Err = ParseIntError;

    fn from_str(s: &str) -> Result<Self, Self::Err> {
        Ok(Id(s.parse::<u32>()?))
    }
}

impl From<u32> for Id {
    fn from(value: u32) -> Self {
        Id(value)
    }
}

impl From<Id> for u32 {
    fn from(value: Id) -> Self {
        value.0
    }
}
impl Display for Id {
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        write!(f, "{}", self.0)
    }
}

impl FromSql for Id {
    fn column_result(value: ValueRef<'_>) -> FromSqlResult<Self> {
        match value {
            ValueRef::Integer(i) => Ok(Id(i as u32)),
            _ => Err(FromSqlError::InvalidType),
        }
    }
}

impl ToSql for Id {
    fn to_sql(&self) -> rusqlite::Result<ToSqlOutput<'_>> {
        Ok(ToSqlOutput::from(self.0 as i64))
    }
}

impl From<Id> for String {
    fn from(value: Id) -> Self {
        value.0.to_string()
    }
}

impl Id {
    pub(crate) fn is_valid(self) -> bool {
        self.0 != 0
    }
}