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use std::str::FromStr;

use color_eyre::eyre::ContextCompat;
use strum::{EnumDiscriminants, EnumIter, EnumMessage};
use unc_primitives::types::{BlockId, BlockReference, Finality};

pub type OnAfterGettingBlockReferenceCallback =
    std::sync::Arc<dyn Fn(&crate::config::NetworkConfig, &BlockReference) -> crate::CliResult>;

#[derive(Clone)]
pub struct ArgsForViewContext {
    pub config: crate::config::Config,
    pub interacting_with_account_ids: Vec<unc_primitives::types::AccountId>,
    pub on_after_getting_block_reference_callback: OnAfterGettingBlockReferenceCallback,
}

#[derive(Debug, Clone, interactive_clap::InteractiveClap)]
#[interactive_clap(input_context = ArgsForViewContext)]
#[interactive_clap(output_context = NetworkViewAtBlockArgsContext)]
pub struct NetworkViewAtBlockArgs {
    /// What is the name of the network?
    #[interactive_clap(skip_default_input_arg)]
    network_name: String,
    #[interactive_clap(subcommand)]
    next: ViewAtBlock,
}

#[derive(Clone)]
pub struct NetworkViewAtBlockArgsContext {
    network_config: crate::config::NetworkConfig,
    on_after_getting_block_reference_callback: OnAfterGettingBlockReferenceCallback,
}

impl NetworkViewAtBlockArgsContext {
    pub fn from_previous_context(
        previous_context: ArgsForViewContext,
        scope: &<NetworkViewAtBlockArgs as interactive_clap::ToInteractiveClapContextScope>::InteractiveClapContextScope,
    ) -> color_eyre::eyre::Result<Self> {
        let network_connection = previous_context.config.network_connection.clone();
        let network_config = network_connection
            .get(&scope.network_name)
            .wrap_err("Failed to get network config!")?
            .clone();
        Ok(Self {
            network_config,
            on_after_getting_block_reference_callback: previous_context
                .on_after_getting_block_reference_callback,
        })
    }
}

impl NetworkViewAtBlockArgs {
    fn input_network_name(
        context: &ArgsForViewContext,
    ) -> color_eyre::eyre::Result<Option<String>> {
        crate::common::input_network_name(&context.config, &context.interacting_with_account_ids)
    }
}

#[derive(Debug, EnumDiscriminants, Clone, interactive_clap::InteractiveClap)]
#[interactive_clap(context = NetworkViewAtBlockArgsContext)]
#[strum_discriminants(derive(EnumMessage, EnumIter))]
/// Сhoose block for view:
pub enum ViewAtBlock {
    #[strum_discriminants(strum(
        message = "now               - View properties in the final block"
    ))]
    /// View properties in the final block
    Now(Now),
    #[strum_discriminants(strum(
        message = "at-block-height   - View properties in a height-selected block"
    ))]
    /// View properties in a height-selected block
    AtBlockHeight(AtBlockHeight),
    #[strum_discriminants(strum(
        message = "at-block-hash     - View properties in a hash-selected block"
    ))]
    /// View properties in a hash-selected block
    AtBlockHash(BlockIdHash),
}

#[derive(Debug, Clone, interactive_clap::InteractiveClap)]
#[interactive_clap(input_context = NetworkViewAtBlockArgsContext)]
#[interactive_clap(output_context = NowContext)]
pub struct Now;

#[derive(Debug, Clone)]
pub struct NowContext;

impl NowContext {
    pub fn from_previous_context(
        previous_context: NetworkViewAtBlockArgsContext,
        _scope: &<Now as interactive_clap::ToInteractiveClapContextScope>::InteractiveClapContextScope,
    ) -> color_eyre::eyre::Result<Self> {
        let block_reference = Finality::Final.into();

        (previous_context.on_after_getting_block_reference_callback)(
            &previous_context.network_config,
            &block_reference,
        )?;
        Ok(Self)
    }
}

#[derive(Debug, Clone, interactive_clap::InteractiveClap)]
#[interactive_clap(input_context = NetworkViewAtBlockArgsContext)]
#[interactive_clap(output_context = AtBlockHeightContext)]
pub struct AtBlockHeight {
    /// Type the block ID height:
    block_id_height: unc_primitives::types::BlockHeight,
}

#[derive(Debug, Clone)]
pub struct AtBlockHeightContext;

impl AtBlockHeightContext {
    pub fn from_previous_context(
        previous_context: NetworkViewAtBlockArgsContext,
        scope: &<AtBlockHeight as interactive_clap::ToInteractiveClapContextScope>::InteractiveClapContextScope,
    ) -> color_eyre::eyre::Result<Self> {
        let block_reference = BlockReference::BlockId(BlockId::Height(scope.block_id_height));

        (previous_context.on_after_getting_block_reference_callback)(
            &previous_context.network_config,
            &block_reference,
        )?;
        Ok(Self)
    }
}

#[derive(Debug, Clone, interactive_clap::InteractiveClap)]
#[interactive_clap(input_context = NetworkViewAtBlockArgsContext)]
#[interactive_clap(output_context = BlockIdHashContext)]
pub struct BlockIdHash {
    /// Type the block ID hash:
    block_id_hash: String,
}

#[derive(Debug, Clone)]
pub struct BlockIdHashContext;

impl BlockIdHashContext {
    pub fn from_previous_context(
        previous_context: NetworkViewAtBlockArgsContext,
        scope: &<BlockIdHash as interactive_clap::ToInteractiveClapContextScope>::InteractiveClapContextScope,
    ) -> color_eyre::eyre::Result<Self> {
        let block_reference = BlockReference::BlockId(BlockId::Hash(
            unc_primitives::hash::CryptoHash::from_str(&scope.block_id_hash).unwrap(),
        ));

        (previous_context.on_after_getting_block_reference_callback)(
            &previous_context.network_config,
            &block_reference,
        )?;
        Ok(Self)
    }
}