use crate::cost::ActionCosts;
use std::slice;

/// Protocol configuration parameter which may change between protocol versions.
#[derive(
    Clone,
    Copy,
    PartialEq,
    Eq,
    PartialOrd,
    Ord,
    Debug,
    strum::Display,
    strum::EnumString,
    strum::IntoStaticStr,
)]
#[strum(serialize_all = "snake_case")]
pub enum Parameter {
    // Gas economics config
    BurntGasReward,
    PessimisticGasPriceInflation,

    // Account creation config
    MinAllowedTopLevelAccountLength,
    RegistrarAccountId,

    // Storage usage config
    StorageAmountPerByte,
    StorageNumBytesAccount,
    StorageNumExtraBytesRecord,

    // Static action costs
    // send_sir / send_not_sir is burned when creating a receipt on the signer shard.
    // (SIR = signer is receiver, which guarantees the receipt is local.)
    // Execution is burned when applying receipt on receiver shard.
    ActionReceiptCreation,
    DataReceiptCreationBase,
    DataReceiptCreationPerByte,
    ActionCreateAccount,
    ActionDeleteAccount,
    ActionDeployContract,
    ActionDeployContractPerByte,
    ActionFunctionCall,
    ActionFunctionCallPerByte,
    ActionTransfer,
    ActionStake,
    ActionAddFullAccessKey,
    ActionAddFunctionCallKey,
    ActionAddFunctionCallKeyPerByte,
    ActionDeleteKey,
    ActionDelegate,

    // Smart contract dynamic gas costs
    WasmRegularOpCost,
    WasmGrowMemCost,
    /// Base cost for a host function
    WasmBase,
    WasmContractLoadingBase,
    WasmContractLoadingBytes,
    WasmReadMemoryBase,
    WasmReadMemoryByte,
    WasmWriteMemoryBase,
    WasmWriteMemoryByte,
    WasmReadRegisterBase,
    WasmReadRegisterByte,
    WasmWriteRegisterBase,
    WasmWriteRegisterByte,
    WasmUtf8DecodingBase,
    WasmUtf8DecodingByte,
    WasmUtf16DecodingBase,
    WasmUtf16DecodingByte,
    WasmSha256Base,
    WasmSha256Byte,
    WasmKeccak256Base,
    WasmKeccak256Byte,
    WasmKeccak512Base,
    WasmKeccak512Byte,
    WasmRipemd160Base,
    WasmRipemd160Block,
    WasmEcrecoverBase,
    WasmEd25519VerifyBase,
    WasmEd25519VerifyByte,
    WasmLogBase,
    WasmLogByte,
    WasmStorageWriteBase,
    WasmStorageWriteKeyByte,
    WasmStorageWriteValueByte,
    WasmStorageWriteEvictedByte,
    WasmStorageReadBase,
    WasmStorageReadKeyByte,
    WasmStorageReadValueByte,
    WasmStorageRemoveBase,
    WasmStorageRemoveKeyByte,
    WasmStorageRemoveRetValueByte,
    WasmStorageHasKeyBase,
    WasmStorageHasKeyByte,
    WasmStorageIterCreatePrefixBase,
    WasmStorageIterCreatePrefixByte,
    WasmStorageIterCreateRangeBase,
    WasmStorageIterCreateFromByte,
    WasmStorageIterCreateToByte,
    WasmStorageIterNextBase,
    WasmStorageIterNextKeyByte,
    WasmStorageIterNextValueByte,
    WasmTouchingTrieNode,
    WasmReadCachedTrieNode,
    WasmPromiseAndBase,
    WasmPromiseAndPerPromise,
    WasmPromiseReturn,
    WasmValidatorStakeBase,
    WasmValidatorTotalStakeBase,
    WasmAltBn128G1MultiexpBase,
    WasmAltBn128G1MultiexpElement,
    WasmAltBn128PairingCheckBase,
    WasmAltBn128PairingCheckElement,
    WasmAltBn128G1SumBase,
    WasmAltBn128G1SumElement,

    // Smart contract limits
    MaxGasBurnt,
    MaxGasBurntView,
    MaxStackHeight,
    ContractPrepareVersion,
    InitialMemoryPages,
    MaxMemoryPages,
    RegistersMemoryLimit,
    MaxRegisterSize,
    MaxNumberRegisters,
    MaxNumberLogs,
    MaxTotalLogLength,
    MaxTotalPrepaidGas,
    MaxActionsPerReceipt,
    MaxNumberBytesMethodNames,
    MaxLengthMethodName,
    MaxArgumentsLength,
    MaxLengthReturnedData,
    MaxContractSize,
    MaxTransactionSize,
    MaxLengthStorageKey,
    MaxLengthStorageValue,
    MaxPromisesPerFunctionCallAction,
    MaxNumberInputDataDependencies,
    MaxFunctionsNumberPerContract,
    Wasmer2StackLimit,
    MaxLocalsPerContract,
    AccountIdValidityRulesVersion,

    // Contract runtime features
    #[strum(serialize = "disable_9393_fix")]
    Disable9393Fix,
    FlatStorageReads,
    ImplicitAccountCreation,
    FixContractLoadingCost,
    MathExtension,
    Ed25519Verify,
    AltBn128,
    FunctionCallWeight,
    VmKind,
    EthImplicitAccounts,
}

#[derive(
    Clone,
    Copy,
    PartialEq,
    Eq,
    PartialOrd,
    Ord,
    Debug,
    strum::Display,
    strum::EnumString,
    strum::IntoStaticStr,
)]
#[strum(serialize_all = "snake_case")]
pub enum FeeParameter {
    ActionReceiptCreation,
    DataReceiptCreationBase,
    DataReceiptCreationPerByte,
    ActionCreateAccount,
    ActionDeleteAccount,
    ActionDeployContract,
    ActionDeployContractPerByte,
    ActionFunctionCall,
    ActionFunctionCallPerByte,
    ActionTransfer,
    ActionStake,
    ActionAddFullAccessKey,
    ActionAddFunctionCallKey,
    ActionAddFunctionCallKeyPerByte,
    ActionDeleteKey,
    ActionDelegate,
}

impl Parameter {
    /// Iterate through all parameters that define numerical limits for
    /// contracts that are executed in the WASM VM.
    pub fn vm_limits() -> slice::Iter<'static, Parameter> {
        [
            Parameter::MaxGasBurnt,
            Parameter::MaxStackHeight,
            Parameter::ContractPrepareVersion,
            Parameter::InitialMemoryPages,
            Parameter::MaxMemoryPages,
            Parameter::RegistersMemoryLimit,
            Parameter::MaxRegisterSize,
            Parameter::MaxNumberRegisters,
            Parameter::MaxNumberLogs,
            Parameter::MaxTotalLogLength,
            Parameter::MaxTotalPrepaidGas,
            Parameter::MaxActionsPerReceipt,
            Parameter::MaxNumberBytesMethodNames,
            Parameter::MaxLengthMethodName,
            Parameter::MaxArgumentsLength,
            Parameter::MaxLengthReturnedData,
            Parameter::MaxContractSize,
            Parameter::MaxTransactionSize,
            Parameter::MaxLengthStorageKey,
            Parameter::MaxLengthStorageValue,
            Parameter::MaxPromisesPerFunctionCallAction,
            Parameter::MaxNumberInputDataDependencies,
            Parameter::MaxFunctionsNumberPerContract,
            Parameter::Wasmer2StackLimit,
            Parameter::MaxLocalsPerContract,
            Parameter::AccountIdValidityRulesVersion,
        ]
        .iter()
    }
}

// TODO: consider renaming parameters to "action_{ActionCosts}" and deleting
// `FeeParameter` all together.
impl From<ActionCosts> for FeeParameter {
    fn from(other: ActionCosts) -> Self {
        match other {
            ActionCosts::create_account => Self::ActionCreateAccount,
            ActionCosts::delete_account => Self::ActionDeleteAccount,
            ActionCosts::delegate => Self::ActionDelegate,
            ActionCosts::deploy_contract_base => Self::ActionDeployContract,
            ActionCosts::deploy_contract_byte => Self::ActionDeployContractPerByte,
            ActionCosts::function_call_base => Self::ActionFunctionCall,
            ActionCosts::function_call_byte => Self::ActionFunctionCallPerByte,
            ActionCosts::transfer => Self::ActionTransfer,
            ActionCosts::stake => Self::ActionStake,
            ActionCosts::add_full_access_key => Self::ActionAddFullAccessKey,
            ActionCosts::add_function_call_key_base => Self::ActionAddFunctionCallKey,
            ActionCosts::add_function_call_key_byte => Self::ActionAddFunctionCallKeyPerByte,
            ActionCosts::delete_key => Self::ActionDeleteKey,
            ActionCosts::new_action_receipt => Self::ActionReceiptCreation,
            ActionCosts::new_data_receipt_base => Self::DataReceiptCreationBase,
            ActionCosts::new_data_receipt_byte => Self::DataReceiptCreationPerByte,
        }
    }
}