///|
pub let map_methods : Map[String, RuntimeFunction] = {
  "clear": map_clear_fn,
  "is_empty": map_is_empty_fn,
  "capacity": map_capacity_fn,
  "contains": map_contains_fn,
  "contains_kv": map_contains_kv_fn,
  "copy": map_copy_fn,
  "each": map_each_fn,
  "eachi": map_eachi_fn,
  "from_array": map_from_array_fn,
  "from_iter": map_from_iter_fn,
  "get": map_get_fn,
  "get_or_default": map_get_or_default_fn,
  "get_or_init": map_get_or_init_fn,
  "iter": map_iter_fn,
  "iter2": map_iter2_fn,
  "keys": map_keys_fn,
  "map": map_map_fn,
  "new": map_new_fn,
  "of": map_of_fn,
  "remove": map_remove_fn,
  "set": map_set_fn,
  "size": map_size_fn,
  "to_array": map_to_array_fn,
  "update": map_update_fn,
  "values": map_values_fn,
}

///|
/// Map clear操作
let map_clear_fn : RuntimeFunction = ctx => match ctx.args {
  [{ val: Map(map), .. }] => {
    map.clear()
    Unit
  }
  _ => Unit
}

///|
/// Map is_empty操作
let map_is_empty_fn : RuntimeFunction = ctx => match ctx.args {
  [{ val: Map(map), .. }] => Bool(map.is_empty())
  _ => Unit
}

///|
/// Map capacity操作
let map_capacity_fn : RuntimeFunction = ctx => match ctx.args {
  [{ val: Map(map), .. }] => Int(map.capacity())
  _ => Unit
}

///|
/// Map contains操作
let map_contains_fn : RuntimeFunction = ctx => match ctx.args {
  [{ val: Map(map), .. }, { val: key, .. }] => Bool(map.contains(key))
  _ => Unit
}

///|
/// Map contains_kv操作
let map_contains_kv_fn : RuntimeFunction = ctx => match ctx.args {
  [{ val: Map(map), .. }, { val: key, .. }, { val, .. }] =>
    Bool(map.get(key) == Some(val))
  _ => Unit
}

///|
/// Map copy操作
let map_copy_fn : RuntimeFunction = ctx => match ctx.args {
  [{ val: Map(map), .. }] => Map(map.copy())
  _ => Unit
}

///|
/// Map each操作
let map_each_fn : RuntimeFunction = ctx => match ctx.args {
  [{ val: Map(map), .. }, { val: Closure(f, env), .. }] => {
    map.each(fn(key, val) {
      ctx.context.call(
        f,
        ctx.mod,
        env,
        @list.of([{ val: key, kind: Positional }, { val, kind: Positional }]),
      )
      |> ignore
    })
    Unit
  }
  _ => Unit
}

///|
/// Map eachi操作
let map_eachi_fn : RuntimeFunction = ctx => match ctx.args {
  [{ val: Map(map), .. }, { val: Closure(f, env), .. }] => {
    map.eachi(fn(i, key, val) {
      ctx.context.call(
        f,
        ctx.mod,
        env,
        @list.of([
          { val: Int(i), kind: Positional },
          { val: key, kind: Positional },
          { val, kind: Positional },
        ]),
      )
      |> ignore
    })
    Unit
  }
  _ => Unit
}

///|
/// Map from_array操作
let map_from_array_fn : RuntimeFunction = ctx => match ctx.args {
  [{ val: Array(arr), .. }] => {
    let map = Map::new()
    arr.each(fn(item) {
      match item {
        Tuple([key, val]) => map.set(key, val)
        _ => ()
      }
    })
    Map(map)
  }
  _ => Unit
}

///|
/// Map from_iter操作
let map_from_iter_fn : RuntimeFunction = ctx => match ctx.args {
  [{ val: Iter(iter), .. }] =>
    Map(
      Map::from_iter(
        iter.map(item => match item {
          Tuple([key, val]) => (key, val)
          // TODO: error handle
          _ => (Unit, Unit)
        }),
      ),
    )
  _ => Unit
}

///|
/// Map get操作
let map_get_fn : RuntimeFunction = ctx => match ctx.args {
  [{ val: Map(map), .. }, { val: key, .. }] =>
    ctx.mod.env.from_option(map.get(key))
  _ => Unit
}

///|
/// Map get_or_default操作
let map_get_or_default_fn : RuntimeFunction = ctx => match ctx.args {
  [{ val: Map(map), .. }, { val: key, .. }, { val: default, .. }] =>
    match map.get(key) {
      Some(val) => val
      None => default
    }
  _ => Unit
}

///|
/// Map get_or_init操作
let map_get_or_init_fn : RuntimeFunction = ctx => match ctx.args {
  [{ val: Map(map), .. }, { val: key, .. }, { val: Closure(f, env), .. }] =>
    match map.get(key) {
      Some(val) => val
      None => {
        let val = ctx.context.call(f, ctx.mod, env, @list.empty())
        map.set(key, val)
        val
      }
    }
  _ => Unit
}

///|
/// Map iter操作
let map_iter_fn : RuntimeFunction = ctx => match ctx.args {
  [{ val: Map(map), .. }] => {
    // 简化实现，返回键值对数组
    let arr = Array::new()
    map.each(fn(key, val) { arr.push(Tuple([key, val])) })
    Array(arr)
  }
  _ => Unit
}

///|
/// Map iter2操作
let map_iter2_fn : RuntimeFunction = ctx => match ctx.args {
  [{ val: Map(map), .. }] => {
    // 简化实现，返回键值对数组
    let arr = Array::new()
    map.each(fn(key, val) { arr.push(Tuple([key, val])) })
    Array(arr)
  }
  _ => Unit
}

///|
/// Map keys操作
let map_keys_fn : RuntimeFunction = ctx => match ctx.args {
  [{ val: Map(map), .. }] => {
    let arr = Array::new()
    map.each(fn(key, _val) { arr.push(key) })
    Array(arr)
  }
  _ => Unit
}

///|
/// Map map操作
let map_map_fn : RuntimeFunction = ctx => match ctx.args {
  [{ val: Map(map), .. }, { val: Closure(f, env), .. }] => {
    let new_map = Map::new()
    map.each(fn(key, val) {
      let new_val = ctx.context.call(
        f,
        ctx.mod,
        env,
        @list.of([{ val: key, kind: Positional }, { val, kind: Positional }]),
      )
      new_map.set(key, new_val)
    })
    Map(new_map)
  }
  _ => Unit
}

///|
/// Map new操作
let map_new_fn : RuntimeFunction = ctx => match ctx.args {
  _ => Map(Map::new())
}

///|
/// Map of操作
let map_of_fn : RuntimeFunction = ctx => match ctx.args {
  [{ val: Array(arr), .. }] =>
    Map(
      Map::from_array(
        arr.map(fn(item) {
          match item {
            Tuple([key, val]) => (key, val)
            _ => error("Map of: (arr: T)")
          }
        }),
      ),
    )
  _ => error("Map of: (arr: T)")
}

///|
/// Map remove操作
let map_remove_fn : RuntimeFunction = ctx => match ctx.args {
  [{ val: Map(map), .. }, { val: key, .. }] => {
    map.remove(key)
    Unit
  }
  _ => Unit
}

///|
/// Map set操作
let map_set_fn : RuntimeFunction = ctx => match ctx.args {
  [{ val: Map(map), .. }, { val: key, .. }, { val, .. }] => {
    map.set(key, val)
    Unit
  }
  _ => Unit
}

///|
/// Map size操作
let map_size_fn : RuntimeFunction = ctx => match ctx.args {
  [{ val: Map(map), .. }] => Int(map.size())
  _ => Unit
}

///|
/// Map to_array操作
let map_to_array_fn : RuntimeFunction = ctx => match ctx.args {
  [{ val: Map(map), .. }] => {
    let arr = Array::new()
    map.each(fn(key, val) { arr.push(Tuple([key, val])) })
    Array(arr)
  }
  _ => Unit
}

///|
/// Map update操作
let map_update_fn : RuntimeFunction = ctx => match ctx.args {
  [{ val: Map(map), .. }, { val: key, .. }, { val: Closure(f, env), .. }] => {
    match map.get(key) {
      Some(old_val) => {
        let new_val = ctx.context.call(
          f,
          ctx.mod,
          env,
          @list.singleton({ val: old_val, kind: Positional }),
        )
        map.set(key, new_val)
      }
      None => ()
    }
    Unit
  }
  _ => Unit
}

///|
/// Map values操作
let map_values_fn : RuntimeFunction = ctx => match ctx.args {
  [{ val: Map(map), .. }] => {
    let arr = Array::new()
    map.each(fn(_key, val) { arr.push(val) })
    Array(arr)
  }
  _ => Unit
}