use debug2::Debug as Debug2;
use serde::{Deserialize, Serialize};

pub mod ast;

#[allow(clippy::all)]
pub mod grammar;

#[derive(Debug, Debug2, Default, Clone, Serialize, Deserialize, PartialEq)]

pub struct Module {
    interfaces: Vec<Interface>,

    types: Vec<CustomType>,
}

#[derive(Debug, Debug2, Default, Clone, Serialize, Deserialize, PartialEq)]

pub struct IDL {
    name: String,
    root: Module,

    extenstions: Vec<Extension>,
}

#[derive(Debug, Debug2, Default, Clone, Serialize, Deserialize, PartialEq)]
pub struct Extension {
    name: String,
    version: Version,
    module: Module,
}

type Version = (u8, u8, u8);

#[derive(Debug, Debug2, Default, Clone, Serialize, Deserialize, PartialEq)]
pub struct Interface {
    name: String,
    version: Version,

    methods: Vec<Method>,

    events: Vec<Method>,
}

#[derive(Debug, Debug2, Default, Clone, Serialize, Deserialize, PartialEq)]
pub struct Method {
    name: String,

    ret: Type,

    args: Vec<(String, Type)>,
}

#[derive(Debug, Debug2, Clone, Serialize, Deserialize, PartialEq)]
#[serde(untagged)]
pub enum Type {
    NotIntType(NotIntType),
    IntType(IntType),
}

#[derive(Debug, Debug2, Clone, Serialize, Deserialize, PartialEq)]

pub enum NotIntType {
    /// TODO: Should we special case Array of u8?
    Array(Box<Type>),
    Custom(String),
    String,
    Object,
    Uuid,
    /// Unit type
    Void,
}
impl Default for Type {
    fn default() -> Self {
        Self::NotIntType(NotIntType::Void)
    }
}

#[derive(Debug, Debug2, Clone, Serialize, Deserialize, PartialEq)]
pub enum IntType {
    U8,
    U16,
    U32,
    U64,
    I8,
    I16,
    I32,
    I64,

    VU16,
    VU8,
    VU32,
    VU64,
    VI8,
    VI16,
    VI32,
    VI64,
}

#[derive(Debug, Debug2, Clone, Serialize, Deserialize, PartialEq)]
pub struct CustomType {
    name: String,
    kind: CustomTypeKind,
}

#[derive(Debug, Debug2, Clone, Serialize, Deserialize, PartialEq)]

enum CustomTypeKind {
    Struct(CustomStruct),
    Enum(Enum),
}

#[derive(Debug, Debug2, Clone, Serialize, Deserialize, PartialEq)]

pub struct Enum {
    storage: IntType,
    values: Vec<(String, i64)>,
}

#[derive(Debug, Debug2, Default, Clone, Serialize, Deserialize, PartialEq)]
pub struct CustomStruct {
    fields: Vec<(String, Type)>,
}

#[derive(Debug, Debug2, Default, Clone, Serialize, Deserialize, PartialEq)]
pub struct Event {}

fn is_default<T: Default + PartialEq>(t: &T) -> bool {
    t == &T::default()
}

mod ty {
    use super::IntType::*;
    use super::NotIntType::*;
    use super::Type::{self, *};

    pub fn void() -> Type {
        NotIntType(Void)
    }

    pub fn array(t: Type) -> Type {
        NotIntType(Array(Box::new(t)))
    }

    pub fn string() -> Type {
        NotIntType(String)
    }

    pub fn object() -> Type {
        NotIntType(Object)
    }

    pub fn uuid() -> Type {
        NotIntType(Uuid)
    }

    pub fn u8() -> Type {
        IntType(U8)
    }
}