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use alloy::primitives::{B256, U256};

use config::CompilerConfig;
use hdp_primitives::processed_types::{
    account::ProcessedAccount, header::ProcessedHeader, mmr::MMRMeta, receipt::ProcessedReceipt,
    storage::ProcessedStorage, transaction::ProcessedTransaction,
};

use std::collections::{HashMap, HashSet};
use thiserror::Error;

use crate::module_registry::ModuleRegistryError;

pub mod config;
pub mod datalake;
pub mod module;
pub mod task;

#[derive(Error, Debug)]
pub enum CompileError {
    #[error("Class hash mismatch")]
    ClassHashMismatch,

    #[error("Cairo Runner Error: {0}")]
    CairoRunnerError(#[from] hdp_cairo_runner::CairoRunnerError),

    #[error("Invalid provider")]
    ProviderError(#[from] hdp_provider::evm::provider::ProviderError),

    #[error("Failed to fetch datalake: {0}")]
    FetchError(#[from] datalake::fetchable::FetchError),

    #[error("Invalid MMR meta data")]
    InvalidMMR,

    #[error("General error: {0}")]
    GeneralError(#[from] anyhow::Error),

    #[error("Error from module registry: {0}")]
    ModuleRegistryError(#[from] ModuleRegistryError),

    #[error("Compilation failed")]
    CompilationFailed,
}

/// Compile vector of tasks into compilation results
pub trait Compilable {
    fn compile(
        &self,
        compile_config: &CompilerConfig,
    ) -> impl std::future::Future<Output = Result<CompilationResult, CompileError>> + Send;
}

#[derive(Debug, PartialEq)]
pub struct CompilationResult {
    /// flag to check if the aggregation function is pre-processable
    pub pre_processable: bool,
    /// task_commitment -> value
    pub commit_results_maps: HashMap<B256, U256>,
    /// Headers related to the datalake
    pub headers: HashSet<ProcessedHeader>,
    /// Accounts related to the datalake
    pub accounts: HashSet<ProcessedAccount>,
    /// Storages related to the datalake
    pub storages: HashSet<ProcessedStorage>,
    /// Transactions related to the datalake
    pub transactions: HashSet<ProcessedTransaction>,
    /// Transaction receipts related to the datalake
    pub transaction_receipts: HashSet<ProcessedReceipt>,
    /// MMR meta data related to the headers
    pub mmr_metas: HashSet<MMRMeta>,
}

impl Default for CompilationResult {
    fn default() -> Self {
        Self {
            pre_processable: true,
            commit_results_maps: HashMap::new(),
            headers: HashSet::new(),
            accounts: HashSet::new(),
            storages: HashSet::new(),
            transactions: HashSet::new(),
            transaction_receipts: HashSet::new(),
            mmr_metas: HashSet::new(),
        }
    }
}

impl CompilationResult {
    pub fn new_without_result(
        headers: HashSet<ProcessedHeader>,
        accounts: HashSet<ProcessedAccount>,
        storages: HashSet<ProcessedStorage>,
        transactions: HashSet<ProcessedTransaction>,
        transaction_receipts: HashSet<ProcessedReceipt>,
        mmr_metas: HashSet<MMRMeta>,
    ) -> Self {
        Self {
            pre_processable: false,
            commit_results_maps: HashMap::new(),
            headers,
            accounts,
            storages,
            transactions,
            transaction_receipts,
            mmr_metas,
        }
    }

    #[allow(clippy::too_many_arguments)]
    pub fn new(
        pre_processable: bool,
        commit_results_maps: HashMap<B256, U256>,
        headers: HashSet<ProcessedHeader>,
        accounts: HashSet<ProcessedAccount>,
        storages: HashSet<ProcessedStorage>,
        transactions: HashSet<ProcessedTransaction>,
        transaction_receipts: HashSet<ProcessedReceipt>,
        mmr_metas: HashSet<MMRMeta>,
    ) -> Self {
        Self {
            pre_processable,
            commit_results_maps,
            headers,
            accounts,
            storages,
            transactions,
            transaction_receipts,
            mmr_metas,
        }
    }

    /// Extend the current compilation results with another compilation results
    pub fn extend(&mut self, other: CompilationResult) {
        self.headers.extend(other.headers);
        self.accounts.extend(other.accounts);
        self.storages.extend(other.storages);
        self.transactions.extend(other.transactions);
        self.transaction_receipts.extend(other.transaction_receipts);
        self.commit_results_maps.extend(other.commit_results_maps);
        self.mmr_metas.extend(other.mmr_metas);

        // if any of the task is not pre-processable, the whole batch is not pre-processable
        if !(self.pre_processable && other.pre_processable) {
            self.pre_processable = false;
        }
    }
}