use crate::defines::LevelInt;
use crate::ffi::ffi_handle::{FFIHandle, FromFFIHandle};
use crate::ffi::{FFIResult, NonOwnedPtrString};
use crate::static_data::{GrowthRate, GrowthRateLibrary, GrowthRateLibraryImpl};
use std::ffi::CStr;
use std::sync::Arc;

/// Instantiates a new growth rate library with a capacity
#[no_mangle]
extern "C" fn growth_rate_library_new(capacity: usize) -> FFIHandle<Arc<dyn GrowthRateLibrary>> {
    let b: Arc<dyn GrowthRateLibrary> = Arc::new(GrowthRateLibraryImpl::new(capacity));
    FFIHandle::get_handle(b.into())
}

/// Calculates the level for a given growth key name and a certain experience.
#[no_mangle]
unsafe extern "C" fn growth_rate_library_calculate_level(
    ptr: FFIHandle<Arc<dyn GrowthRateLibrary>>,
    growth_rate: NonOwnedPtrString,
    experience: u32,
) -> FFIResult<LevelInt> {
    ptr.from_ffi_handle()
        .calculate_level(&CStr::from_ptr(growth_rate).into(), experience)
        .into()
}

/// Calculates the experience for a given growth key name and a certain level.
#[no_mangle]
unsafe extern "C" fn growth_rate_library_calculate_experience(
    ptr: FFIHandle<Arc<dyn GrowthRateLibrary>>,
    growth_rate: NonOwnedPtrString,
    level: LevelInt,
) -> FFIResult<u32> {
    ptr.from_ffi_handle()
        .calculate_experience(&CStr::from_ptr(growth_rate).into(), level)
        .into()
}

/// Adds a new growth rate with a name and value.
#[no_mangle]
unsafe extern "C" fn growth_rate_library_add_growth_rate(
    ptr: FFIHandle<Arc<dyn GrowthRateLibrary>>,
    name: NonOwnedPtrString,
    growth_rate: FFIHandle<Arc<dyn GrowthRate>>,
) {
    ptr.from_ffi_handle()
        .add_growth_rate(&CStr::from_ptr(name).into(), growth_rate.from_ffi_handle());
}