use crate::defines::LevelInt;
use crate::ffi::{ExternPointer, IdentifiablePointer, OwnedPtr};
use crate::static_data::{LibrarySettings, LibrarySettingsImpl};
use std::ptr::drop_in_place;

/// Creates a new settings library.
/// - `maximum_level` is the highest level a Pokemon can be.
/// - `shiny_rate` is the chance of a Pokemon being shiny, as the denominator of a fraction, where
/// the nominator is 1. For example, if this is 1000, then the chance of a Pokemon being shiny is
/// 1/1000.
#[no_mangle]
extern "C" fn library_settings_new(
    max_level: LevelInt,
    shiny_rate: u32,
) -> IdentifiablePointer<Box<dyn LibrarySettings>> {
    let b: Box<dyn LibrarySettings> = Box::new(LibrarySettingsImpl::new(max_level, shiny_rate));
    b.into()
}

/// Drop a library settings object.
#[no_mangle]
unsafe extern "C" fn library_settings_drop(ptr: OwnedPtr<Box<dyn LibrarySettings>>) {
    drop_in_place(ptr)
}

/// The highest level a Pokemon can be.
#[no_mangle]
extern "C" fn library_settings_maximum_level(ptr: ExternPointer<Box<dyn LibrarySettings>>) -> LevelInt {
    ptr.as_ref().maximum_level()
}

/// The chance of a Pokemon being shiny, as the denominator of a fraction, where the nominator
/// is 1. For example, if this is 1000, then the chance of a Pokemon being shiny is 1/1000.
#[no_mangle]
extern "C" fn library_settings_shiny_rate(ptr: ExternPointer<Box<dyn LibrarySettings>>) -> u32 {
    ptr.as_ref().shiny_rate()
}