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use std::marker::PhantomData;

use drt_sc::{
    abi::TypeAbiFrom,
    codec::{PanicErrorHandler, TopDecodeMulti},
};

use crate::{
    api::StaticApi,
    drt_sc::{
        codec::TopEncodeMulti,
        types::{Address, CodeMetadata},
    },
    scenario_format::interpret_trait::InterpreterContext,
    scenario_model::{BytesValue, TxResponse, TxResponseStatus},
};

use crate::scenario::model::{AddressValue, BigUintValue, TxExpect, U64Value};

use super::ScDeployStep;

/// `ScDeployStep` with explicit return type.
#[derive(Default, Debug)]
pub struct TypedScDeploy<OriginalResult> {
    pub sc_deploy_step: ScDeployStep,
    _phantom: PhantomData<OriginalResult>,
}

impl<OriginalResult> TypedScDeploy<OriginalResult> {
    pub fn result<RequestedResult>(&self) -> Result<RequestedResult, TxResponseStatus>
    where
        OriginalResult: TopEncodeMulti,
        RequestedResult: TopDecodeMulti + TypeAbiFrom<OriginalResult>,
    {
        let mut raw_result = self.response().out.clone();
        Ok(
            RequestedResult::multi_decode_or_handle_err(&mut raw_result, PanicErrorHandler)
                .unwrap(),
        )
    }

    pub fn from<A>(mut self, address: A) -> Self
    where
        AddressValue: From<A>,
    {
        self.sc_deploy_step = self.sc_deploy_step.from(address);
        self
    }

    pub fn rewa_value<A>(mut self, amount: A) -> Self
    where
        BigUintValue: From<A>,
    {
        self.sc_deploy_step = self.sc_deploy_step.rewa_value(amount);
        self
    }

    pub fn code_metadata(mut self, code_metadata: CodeMetadata) -> Self {
        self.sc_deploy_step = self.sc_deploy_step.code_metadata(code_metadata);
        self
    }

    pub fn code<V>(mut self, expr: V) -> Self
    where
        BytesValue: From<V>,
    {
        self.sc_deploy_step = self.sc_deploy_step.code(expr);
        self
    }

    #[deprecated(
        since = "0.42.0",
        note = "Please use method `code` instead. To ease transition, it is also possible to call it with a tuple like so: `.code((expr, context))`"
    )]
    #[allow(deprecated)]
    pub fn contract_code(mut self, expr: &str, context: &InterpreterContext) -> Self {
        self.sc_deploy_step = self.sc_deploy_step.contract_code(expr, context);
        self
    }

    pub fn gas_limit<V>(mut self, value: V) -> Self
    where
        U64Value: From<V>,
    {
        self.sc_deploy_step = self.sc_deploy_step.gas_limit(value);
        self
    }

    /// Adds a custom expect section to the tx.
    pub fn expect(mut self, expect: TxExpect) -> Self {
        self.sc_deploy_step = self.sc_deploy_step.expect(expect);
        self
    }

    /// Explicitly states that no tx expect section should be added and no checks should be performed.
    ///
    /// Note: by default a basic `TxExpect::ok()` is added, which checks that status is 0 and nothing else.
    pub fn no_expect(mut self) -> Self {
        self.sc_deploy_step.expect = None;
        self
    }

    /// Sets following fields based on the smart contract proxy:
    /// - "function"
    /// - "arguments"
    #[deprecated(
        since = "0.49.0",
        note = "Please use the unified transaction syntax instead."
    )]
    #[allow(deprecated)]
    pub fn call(
        mut self,
        contract_deploy: drt_sc::types::ContractDeploy<StaticApi, OriginalResult>,
    ) -> Self {
        let (_, denali_args) = super::process_contract_deploy(contract_deploy);
        for arg in denali_args {
            self.sc_deploy_step.tx.arguments.push(BytesValue::from(arg));
        }
        self
    }

    /// Unwraps the response, if available.
    pub fn response(&self) -> &TxResponse {
        self.sc_deploy_step.response()
    }
}

impl<OriginalResult> AsMut<ScDeployStep> for TypedScDeploy<OriginalResult> {
    fn as_mut(&mut self) -> &mut ScDeployStep {
        &mut self.sc_deploy_step
    }
}

impl<OriginalResult> From<TypedScDeploy<OriginalResult>> for ScDeployStep {
    fn from(typed: TypedScDeploy<OriginalResult>) -> Self {
        typed.sc_deploy_step
    }
}

impl<OriginalResult> From<ScDeployStep> for TypedScDeploy<OriginalResult> {
    fn from(untyped: ScDeployStep) -> Self {
        Self {
            sc_deploy_step: untyped,
            _phantom: PhantomData,
        }
    }
}

/// Helps with syntax. Allows the `TypedScDeploy` to call the `execute` operation directly.
///
/// The trait defines the connection to the executor.
pub trait TypedScDeployExecutor {
    fn execute_typed_sc_deploy<OriginalResult, RequestedResult>(
        &mut self,
        typed_sc_call: TypedScDeploy<OriginalResult>,
    ) -> (Address, RequestedResult)
    where
        OriginalResult: TopEncodeMulti,
        RequestedResult: TopDecodeMulti + TypeAbiFrom<OriginalResult>;
}

impl<OriginalResult> TypedScDeploy<OriginalResult>
where
    OriginalResult: TopEncodeMulti,
{
    /// Executes the operation, on the given executor.
    pub fn execute<E: TypedScDeployExecutor, RequestedResult>(
        self,
        executor: &mut E,
    ) -> (Address, RequestedResult)
    where
        RequestedResult: TopDecodeMulti + TypeAbiFrom<OriginalResult>,
    {
        executor.execute_typed_sc_deploy(self)
    }
}