#![cfg_attr(not(feature = "std"), no_std)]

/// Edit this file to define custom logic or remove it if it is not needed.
/// Learn more about FRAME and the core library of Substrate FRAME pallets:
/// <https://docs.substrate.io/reference/frame-pallets/>
pub use pallet::*;

#[cfg(test)]
mod mock;

#[cfg(test)]
mod tests;

#[cfg(feature = "runtime-benchmarks")]
mod benchmarking;
pub mod weights;
pub use weights::*;

#[frame_support::pallet]
pub mod pallet {
	use super::*;
	use frame_support::pallet_prelude::*;
	use frame_system::pallet_prelude::*;

	#[pallet::pallet]
	pub struct Pallet<T>(_);

	#[pallet::config]
	pub trait Config: frame_system::Config {
		/// Because this pallet emits events, it depends on the runtime's definition of an event.
		type RuntimeEvent: From<Event<Self>> + IsType<<Self as frame_system::Config>::RuntimeEvent>;
		/// Type representing the weight of this pallet
		type WeightInfo: WeightInfo;
	}

	#[pallet::storage]
	#[pallet::getter(fn something)]
	pub type Something<T> = StorageValue<_, u32>;

	#[pallet::event]
	#[pallet::generate_deposit(pub(super) fn deposit_event)]
	pub enum Event<T: Config> {
		SomethingStored { something: u32, who: T::AccountId },
	}

	#[pallet::error]
	pub enum Error<T> {
		NoneValue,
		StorageOverflow,
	}

	#[pallet::call]
	impl<T: Config> Pallet<T> {
		#[pallet::call_index(0)]
		#[pallet::weight(T::WeightInfo::do_something())]
		pub fn do_something(origin: OriginFor<T>, something: u32) -> DispatchResult {
			let who = ensure_signed(origin)?;
			<Something<T>>::put(something);
			Self::deposit_event(Event::SomethingStored { something, who });
			Ok(())
		}

		#[pallet::call_index(1)]
		#[pallet::weight(T::WeightInfo::cause_error())]
		pub fn cause_error(origin: OriginFor<T>) -> DispatchResult {
			let _who = ensure_signed(origin)?;
			match <Something<T>>::get() {
				None => return Err(Error::<T>::NoneValue.into()),
				Some(old) => {
					let new = old.checked_add(1).ok_or(Error::<T>::StorageOverflow)?;
					<Something<T>>::put(new);
					Ok(())
				},
			}
		}
	}
}

#![cfg_attr(not(feature = "std"), no_std)]

#[pallet::pallet]
pub struct Pallet<T>(_);

#[pallet::config]
pub trait Config: frame_system::Config {
	/// Bởi vì pallet này sẽ bắn Event nên định nghĩa của Event sẽ cần được khai báo từ phía Runtime
	type RuntimeEvent: From<Event<Self>> + IsType<<Self as frame_system::Config>::RuntimeEvent>;
	/// Type đại diện cho weight của pallet này
	type WeightInfo: WeightInfo;
}

#[pallet::storage]
#[pallet::getter(fn something)]
pub type Something<T> = StorageValue<_, u32>;

#[pallet::event]
#[pallet::generate_deposit(pub(super) fn deposit_event)]
pub enum Event<T: Config> {
	SomethingStored { something: u32, who: T::AccountId },
}

#[pallet::error]
pub enum Error<T> {
	NoneValue,
	StorageOverflow,
}

#[pallet::call]
impl<T: Config> Pallet<T> {
	#[pallet::call_index(0)]
	#[pallet::weight(T::WeightInfo::do_something())]
	pub fn do_something(origin: OriginFor<T>, something: u32) -> DispatchResult {
		// Chắc chắn rằng transaction gồm extrinsic call được gọi đã được sign
		// Hàm này sẽ trả về lỗi nếu extrinsic chưa được sign
		let who = ensure_signed(origin)?;
		<Something<T>>::put(something);
		Self::deposit_event(Event::SomethingStored { something, who });
		Ok(())
	}

	#[pallet::call_index(1)]
	#[pallet::weight(T::WeightInfo::cause_error())]
	pub fn cause_error(origin: OriginFor<T>) -> DispatchResult {
		// Chắc chắn rằng transaction gồm extrinsic call được gọi đã được sign
		// Hàm này sẽ trả về lỗi nếu extrinsic chưa được sign
		let _who = ensure_signed(origin)?;
		match <Something<T>>::get() {
			None => return Err(Error::<T>::NoneValue.into()),
			Some(old) => {
				let new = old.checked_add(1).ok_or(Error::<T>::StorageOverflow)?;
				<Something<T>>::put(new);
				Ok(())
			},
		}
	}
}

construct_runtime!(
	pub struct Runtime {
		System: frame_system,
		Timestamp: pallet_timestamp,
		Aura: pallet_aura,
		Grandpa: pallet_grandpa,
		Balances: pallet_balances,
		TransactionPayment: pallet_transaction_payment,
		Sudo: pallet_sudo,
		// Khai báo pallet mẫu được sử dụng vào Runtime
		TemplateModule: pallet_template,
	}
);

/// Configure the pallet-template in pallets/template.
impl pallet_template::Config for Runtime {
	type RuntimeEvent = RuntimeEvent;
	type WeightInfo = pallet_template::weights::SubstrateWeight<Runtime>;
}