use ruma_serde::urlencoded;
use serde::Deserialize;
use url::form_urlencoded::Serializer as Encoder;

#[derive(Deserialize, Debug, PartialEq)]
struct NewType<T>(T);

#[test]
fn deserialize_newtype_i32() {
    let result = vec![("field".to_owned(), NewType(11))];

    assert_eq!(urlencoded::from_str("field=11"), Ok(result));
}

#[test]
fn deserialize_bytes() {
    let result = vec![("first".to_owned(), 23), ("last".to_owned(), 42)];

    assert_eq!(urlencoded::from_bytes(b"first=23&last=42"), Ok(result));
}

#[test]
fn deserialize_str() {
    let result = vec![("first".to_owned(), 23), ("last".to_owned(), 42)];

    assert_eq!(urlencoded::from_str("first=23&last=42"), Ok(result));
}

#[test]
fn deserialize_borrowed_str() {
    let result = vec![("first", 23), ("last", 42)];

    assert_eq!(urlencoded::from_str("first=23&last=42"), Ok(result));
}

#[test]
fn deserialize_reader() {
    let result = vec![("first".to_owned(), 23), ("last".to_owned(), 42)];

    assert_eq!(
        urlencoded::from_reader(b"first=23&last=42" as &[_]),
        Ok(result)
    );
}

#[test]
fn deserialize_option() {
    let result = vec![
        ("first".to_owned(), Some(23)),
        ("last".to_owned(), Some(42)),
    ];
    assert_eq!(urlencoded::from_str("first=23&last=42"), Ok(result));
}

#[test]
fn deserialize_unit() {
    assert_eq!(urlencoded::from_str(""), Ok(()));
    assert_eq!(urlencoded::from_str("&"), Ok(()));
    assert_eq!(urlencoded::from_str("&&"), Ok(()));
    assert!(urlencoded::from_str::<()>("first=23").is_err());
}

#[derive(Deserialize, Debug, PartialEq, Eq)]
enum X {
    A,
    B,
    C,
}

#[test]
fn deserialize_unit_enum() {
    let result = vec![
        ("one".to_owned(), X::A),
        ("two".to_owned(), X::B),
        ("three".to_owned(), X::C),
    ];

    assert_eq!(urlencoded::from_str("one=A&two=B&three=C"), Ok(result));
}

#[test]
fn deserialize_unit_type() {
    assert_eq!(urlencoded::from_str(""), Ok(()));
}

#[derive(Debug, Deserialize, PartialEq)]
struct Wrapper<T> {
    item: T,
}

#[derive(Debug, PartialEq, Deserialize)]
struct NewStruct {
    list: Vec<String>,
}

#[derive(Debug, PartialEq, Deserialize)]
struct Struct {
    list: Vec<Option<String>>,
}

#[derive(Debug, PartialEq, Deserialize)]
struct NumList {
    list: Vec<u8>,
}

#[derive(Debug, PartialEq, Deserialize)]
struct ListStruct {
    list: Vec<NewType<usize>>,
}

#[derive(Debug, PartialEq, Deserialize)]
struct MapStruct {
    a: usize,
    b: String,
    c: Option<u8>,
}

#[test]
fn deserialize_mapstruct() {
    let de = MapStruct {
        a: 10,
        b: "Hello".into(),
        c: None,
    };
    assert_eq!(
        de,
        urlencoded::from_str::<MapStruct>("a=10&b=Hello").unwrap()
    );
}

#[test]
#[ignore]
fn deserialize_newstruct() {
    let de = NewStruct {
        list: vec!["hello".into(), "world".into()],
    };
    assert_eq!(
        de,
        urlencoded::from_str::<NewStruct>("list=hello&list=world").unwrap()
    );
}

#[test]
#[ignore]
fn deserialize_numlist() {
    let de = NumList {
        list: vec![1, 2, 3, 4],
    };
    assert_eq!(
        de,
        urlencoded::from_str::<NumList>("list=1&list=2&list=3&list=4").unwrap()
    );
}

#[test]
#[ignore]
fn deserialize_vec_bool() {
    assert_eq!(
        Wrapper {
            item: vec![true, false, false]
        },
        urlencoded::from_str::<Wrapper<_>>("item=true&item=false&item=false")
            .unwrap()
    );
}

#[test]
#[ignore]
fn deserialize_vec_string() {
    assert_eq!(
        Wrapper {
            item: vec![
                "hello".to_string(),
                "matrix".to_string(),
                "hello".to_string()
            ],
        },
        urlencoded::from_str::<Wrapper<_>>("item=hello&item=matrix&item=hello")
            .unwrap()
    );
}

#[test]
#[ignore]
fn deserialize_struct_unit_enum() {
    let result = Wrapper {
        item: vec![X::A, X::B, X::C],
    };

    assert_eq!(urlencoded::from_str("item=A&item=B&item=C"), Ok(result));
}

#[derive(Debug, Deserialize, PartialEq)]
struct Nested<T> {
    item: T,
}

#[derive(Debug, Deserialize, PartialEq)]
struct Inner {
    c: String,
    a: usize,
    b: String,
}

#[derive(Debug, Deserialize, PartialEq)]
struct InnerList<T> {
    list: Vec<T>,
}

#[test]
#[ignore]
fn deserialize_nested() {
    let mut encoder = Encoder::new(String::new());

    let nested = Nested {
        item: Inner {
            c: "hello".into(),
            a: 10,
            b: "bye".into(),
        },
    };
    assert_eq!(
        nested,
        urlencoded::from_str::<Nested<Inner>>(
            &encoder
                .append_pair("item", r#"{"c":"hello","a":10,"b":"bye"}"#)
                .finish(),
        )
        .unwrap()
    );
}

#[test]
#[ignore]
fn deserialize_nested_list() {
    let mut encoder = Encoder::new(String::new());

    let nested = Nested {
        item: InnerList {
            list: vec![1, 2, 3],
        },
    };

    assert_eq!(
        nested,
        urlencoded::from_str::<Nested<InnerList<u8>>>(
            &encoder.append_pair("item", r#"{"list":[1,2,3]}"#).finish(),
        )
        .unwrap()
    );
}

#[test]
#[ignore]
fn deserialize_nested_list_option() {
    let mut encoder = Encoder::new(String::new());

    let nested = Nested {
        item: InnerList {
            list: vec![Some(1), Some(2), None],
        },
    };
    assert_eq!(
        nested,
        urlencoded::from_str::<Nested<InnerList<Option<u8>>>>(
            &encoder
                .append_pair("item", r#"{"list":[1,2,null]}"#)
                .finish(),
        )
        .unwrap()
    );
}