use claude::Currency;
use std::cmp::Ordering;

#[test]
fn taxes() {
    let a = Currency {
        symbol: Some('$'),
        value: 1000,
    };
    let b = Currency {
        symbol: Some('$'),
        value: 1190,
    };

    fn foo(n: f64) -> i64 {
        (n * 1000f64).abs() as i64
    }

    assert_eq!(1 * foo(1.19), 1190);
    assert_eq!(a * 1.19, b);
    assert_eq!(1.19 * a, b);
    assert_eq!(a * 1.1901, b);
    assert_eq!(1.1901 * a, b);
}

#[test]
fn eq_works() {
    let a = Currency {
        symbol: Some('$'),
        value: 1210,
    };
    let b = Currency {
        symbol: Some('$'),
        value: 1210,
    };
    let c = Currency {
        symbol: Some('$'),
        value: 1251,
    };

    assert!(a == b);
    assert!(b == b);
    assert!(b == a);
    assert!(a != c);
}

#[test]
fn ord_works() {
    let a = Currency {
        symbol: Some('$'),
        value: 1210,
    };
    let b = Currency {
        symbol: Some('$'),
        value: 1211,
    };
    let c = Currency {
        symbol: Some('$'),
        value: 1311,
    };
    let d = Currency {
        symbol: Some('$'),
        value: 1210,
    };

    assert_eq!(a.partial_cmp(&b), Some(Ordering::Less));
    assert_eq!(a.partial_cmp(&c), Some(Ordering::Less));
    assert_eq!(a.partial_cmp(&d), Some(Ordering::Equal));
    assert_eq!(c.partial_cmp(&a), Some(Ordering::Greater));

    assert!(a < b);
    assert!(a < c);
    assert!(a <= a);
    assert!(a <= c);
    assert!(b > a);
    assert!(c > a);
    assert!(a >= a);
    assert!(c >= a);
}

#[test]
fn arithmetic_works() {
    let x = Currency {
        symbol: Some('$'),
        value: 1206,
    };
    let y = Currency {
        symbol: Some('$'),
        value: 1143,
    };

    assert!(
        x + y
            == Currency {
                symbol: Some('$'),
                value: 2349
            }
            && y + x
                == Currency {
                    symbol: Some('$'),
                    value: 2349
                }
    );
    assert!(
        x - y
            == Currency {
                symbol: Some('$'),
                value: 63
            }
    );
    assert!(
        y - x
            == Currency {
                symbol: Some('$'),
                value: -63
            }
    );
    assert!(
        x * 2
            == Currency {
                symbol: Some('$'),
                value: 2412
            }
            && 2 * x
                == Currency {
                    symbol: Some('$'),
                    value: 2412
                }
    );
    assert!(
        x / 2
            == Currency {
                symbol: Some('$'),
                value: 603
            }
    );
}

#[test]
#[cfg(feature = "parsing")]
fn parse_works() {
    let a1 = Currency {
        symbol: Some('$'),
        value: 1210,
    };
    let b1 = Currency::from_string("$12.10");
    assert!(a1 == b1.unwrap());

    let a2 = Currency {
        symbol: Some('$'),
        value: 1200,
    };
    let b2 = Currency::from_string("$12");
    assert!(a2 == b2.unwrap());

    let a3 = Currency {
        symbol: None,
        value: 1200099,
    };
    let b3 = Currency::from_string("12,000.99");
    assert!(a3 == b3.unwrap());

    let a4 = Currency {
        symbol: Some('£'),
        value: 1200099,
    };
    let b4 = Currency::from_string("£12.000,99");
    assert!(a4 == b4.unwrap());

    // Negatives
    let a5 = Currency {
        symbol: Some('$'),
        value: -1210,
    };
    let b5 = Currency::from_string("-$12.10");
    println!("{:?}, {:?}", a1, b1);
    assert!(a5 == b5.unwrap());

    let a6 = Currency {
        symbol: Some('$'),
        value: -1200,
    };
    let b6 = Currency::from_string("-$12");
    assert!(a6 == b6.unwrap());

    let a7 = Currency {
        symbol: None,
        value: -1200099,
    };
    let b7 = Currency::from_string("-12,000.99");
    assert!(a7 == b7.unwrap());

    let a8 = Currency {
        symbol: Some('£'),
        value: -1200099,
    };
    let b8 = Currency::from_string("-£12.000,99");
    assert!(a8 == b8.unwrap());

    // Zeros
    let a9 = Currency {
        symbol: Some('€'),
        value: 0,
    };
    let b9 = Currency::from_string("€0");
    assert!(a9 == b9.unwrap());

    let a10 = Currency {
        symbol: None,
        value: 0,
    };
    let b10 = Currency::from_string("000");
    assert!(a10 == b10.unwrap());

    let a11 = Currency {
        symbol: Some('€'),
        value: 50,
    };
    let b11 = Currency::from_string("€0,50");
    assert!(a11 == b11.unwrap());

    let a12 = Currency {
        symbol: Some('€'),
        value: -50,
    };
    let b12 = Currency::from_string("-€0.50");
    assert!(a12 == b12.unwrap());
}

#[test]
fn display_works() {
    assert_eq!(
        Currency {
            symbol: None,
            value: 1210
        }
        .prefix()
        .to_string(),
        "12.10"
    );
    assert_eq!(
        Currency {
            symbol: Some('$'),
            value: 1210
        }
        .prefix()
        .to_string(),
        "$12.10"
    );
    assert_eq!(
        Currency {
            symbol: Some('$'),
            value: 100010
        }
        .prefix()
        .to_string(),
        "$1000.10"
    );

    // Not implemented
    //assert!(format!("{:e}", Currency{ symbol: Some('£'), value: 100000}) == "£1000,00");
}

#[test]
fn default() {
    assert_eq!(
        Currency::default(),
        Currency {
            symbol: None,
            value: 0
        }
    );
}

#[test]
fn add_to_default() {
    assert_eq!(
        Currency::default()
            + Currency {
                symbol: Some('€'),
                value: 1
            },
        Currency {
            symbol: Some('€'),
            value: 1
        }
    );
}