use crate::assert_js;

#[test]
fn record_accessors() {
    // We can use record accessors for types with only one constructor
    assert_js!(
        r#"
pub type Person { Person(name: String, age: Int) }
pub fn get_age(person: Person) { person.age }
pub fn get_name(person: Person) { person.name }
"#
    );
}

#[test]
fn record_accessor_multiple_variants() {
    // We can access fields on custom types with multiple variants
    assert_js!(
        "
pub type Person {
    Teacher(name: String, title: String)
    Student(name: String, age: Int)
}
pub fn get_name(person: Person) { person.name }"
    );
}

#[test]
fn record_accessor_multiple_variants_positions_other_than_first() {
    // We can access fields on custom types with multiple variants
    // In positions other than the 1st field
    assert_js!(
        "
pub type Person {
    Teacher(name: String, age: Int, title: String)
    Student(name: String, age: Int)
}
pub fn get_name(person: Person) { person.name }
pub fn get_age(person: Person) { person.age }"
    );
}

#[test]
fn record_accessor_multiple_with_first_position_different_types() {
    // We can access fields on custom types with multiple variants
    // In positions other than the 1st field
    assert_js!(
        "
pub type Person {
    Teacher(name: Nil, age: Int)
    Student(name: String, age: Int)
}
pub fn get_age(person: Person) { person.age }"
    );
}

#[test]
fn record_accessor_multiple_variants_parameterised_types() {
    // We can access fields on custom types with multiple variants
    // In positions other than the 1st field
    assert_js!(
        "
pub type Person {
    Teacher(name: String, age: List(Int), title: String)
    Student(name: String, age: List(Int))
}
pub fn get_name(person: Person) { person.name }
pub fn get_age(person: Person) { person.age }"
    );
}

// https://github.com/gleam-lang/gleam/issues/4603
#[test]
fn field_named_x0() {
    assert_js!(
        "
pub type Wibble {
  Wibble(Int, x0: String)
}
"
    );
}

#[test]
fn field_named_then_is_escaped() {
    assert_js!(
        "
pub type Wibble {
  Wibble(then: fn() -> Int)
}
"
    );
}

#[test]
fn field_named_constructor_is_escaped() {
    assert_js!(
        "
pub type Wibble {
  Wibble(constructor: fn() -> Wibble)
}
"
    );
}

#[test]
fn field_named_prototype_is_escaped() {
    assert_js!(
        "
pub type Wibble {
  Wibble(prototype: String)
}
"
    );
}

#[test]
fn const_record_update_generic_respecialization() {
    assert_js!(
        "
pub type Box(a) {
  Box(name: String, value: a)
}

pub const base = Box(\"score\", 50)
pub const updated = Box(..base, value: \"Hello\")

pub fn main() {
  #(base, updated)
}
",
    );
}
