use aga8::composition::Composition;
use aga8::detail::Detail;

const COMP_FULL: Composition = Composition {
    methane: 0.778_24,
    nitrogen: 0.02,
    carbon_dioxide: 0.06,
    ethane: 0.08,
    propane: 0.03,
    isobutane: 0.001_5,
    n_butane: 0.003,
    isopentane: 0.000_5,
    n_pentane: 0.001_65,
    hexane: 0.002_15,
    heptane: 0.000_88,
    octane: 0.000_24,
    nonane: 0.000_15,
    decane: 0.000_09,
    hydrogen: 0.004,
    oxygen: 0.005,
    carbon_monoxide: 0.002,
    water: 0.000_1,
    hydrogen_sulfide: 0.002_5,
    helium: 0.007,
    argon: 0.001,
};

#[test]
fn detail_demo_example() {
    let mut aga_test = Detail::new();

    aga_test.set_composition(&COMP_FULL).unwrap();

    aga_test.molar_mass();

    aga_test.t = 400.0;
    aga_test.p = 50000.0;
    aga_test.d = 6.36570;
    aga_test.z = 0.0;

    aga_test.density().unwrap();
    aga_test.properties();

    assert!(f64::abs(aga_test.d - 12.807_924_036_488_01) < 1.0e-10);
    assert!(f64::abs(aga_test.mm - 20.543_330_51) < 1.0e-10);
    assert!(f64::abs(aga_test.p - 50_000.0) < 1.0e-10);
    assert!(f64::abs(aga_test.z - 1.173_801_364_147_326) < 1.0e-10);
    assert!(f64::abs(aga_test.dp_dd - 6_971.387_690_924_09) < 1.0e-10);
    assert!(f64::abs(aga_test.d2p_dd2 - 1_118.803_636_639_52) < 1.0e-10);
    assert!(f64::abs(aga_test.dp_dt - 235.664_149_306_821_2) < 1.0e-10);
    assert!(f64::abs(aga_test.u - -2_739.134_175_817_231) < 1.0e-10);
    assert!(f64::abs(aga_test.h - 1_164.699_096_269_404) < 1.0e-10);
    assert!(f64::abs(aga_test.s - -38.548_826_846_771_11) < 1.0e-10);
    assert!(f64::abs(aga_test.cv - 39.120_761_544_303_32) < 1.0e-10);
    assert!(f64::abs(aga_test.cp - 58.546_176_723_806_67) < 1.0e-10);
    assert!(f64::abs(aga_test.w - 712.639_368_405_790_3) < 1.0e-10);
    assert!(f64::abs(aga_test.g - 16_584.229_834_977_85) < 1.0e-10);
    assert!(f64::abs(aga_test.jt - 7.432_969_304_794_577E-5) < 1.0e-10);
    assert!(f64::abs(aga_test.kappa - 2.672_509_225_184_606) < 1.0e-10);
}

#[cfg(feature = "extern")]
#[test]
fn detail_api_test_02() {
    use aga8::{composition::CompositionError, ffi::detail::*};
    use aga8::DensityError;

    let temperature = 400.0;
    let pressure = 50_000.0;

    unsafe {
        let d_test = aga8_new();
        let mut err: CompositionError = CompositionError::Ok;
        let mut dens_err: DensityError = DensityError::Ok;
        aga8_set_composition(d_test, &COMP_FULL, &mut err);
        if err != CompositionError::Ok {
            panic!("Invalid composition: {:?}", err);
        }
        aga8_set_temperature(d_test, temperature);
        aga8_set_pressure(d_test, pressure);
        aga8_calculate_density(d_test, &mut dens_err);
        if dens_err != DensityError::Ok {
            panic!("Density calculation failed: {:?}", dens_err);
        }
        aga8_calculate_properties(d_test);

        let results = aga8_get_properties(d_test);
        assert!(f64::abs(results.d - 12.807_924_036_488_01) < 1.0e-10);

        aga8_free(d_test);
    }
}