manabrew-engine 0.4.1

use serde::{Deserialize, Serialize};

use crate::event::RunParams;
use crate::game::GameState;
use crate::parsing::{keys, Params};
use crate::spellability::SpellAbility;
use crate::trigger::TriggerType;

use super::trigger::TriggerBehavior;

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct TriggerBlocks {
    pub valid_card: Option<crate::parsing::CompiledSelector>,
    pub valid_blocked: Option<crate::parsing::CompiledSelector>,
}

impl TriggerBlocks {
    pub fn parse(params: &Params) -> Box<dyn TriggerBehavior> {
        Box::new(Self {
            valid_card: params.selector_cloned(keys::VALID_CARD),
            valid_blocked: params.selector_cloned(keys::VALID_BLOCKED),
        })
    }
}

#[typetag::serde]
impl TriggerBehavior for TriggerBlocks {
    fn trigger_type(&self) -> TriggerType {
        TriggerType::Blocks
    }

    fn perform_test(
        &self,
        trigger: &super::trigger::Trigger,
        params: &RunParams,
        game: &GameState,
    ) -> bool {
        trigger.matches_optional_valid_card_filter(&self.valid_card, params.blocker, game)
            && trigger.matches_optional_valid_card_filter(
                &self.valid_blocked,
                params.blocked_attacker,
                game,
            )
    }

    fn set_triggering_objects(
        &self,
        _trigger: &super::trigger::Trigger,
        sa: &mut SpellAbility,
        params: &RunParams,
        _game: &GameState,
    ) {
        if let Some(blocker) = params.blocker {
            sa.set_triggering_object(crate::ability::AbilityKey::Blocker, blocker.0.to_string());
        }
        if let Some(attackers) = params.attacker_ids.as_ref() {
            let csv = attackers
                .iter()
                .map(|c| c.0.to_string())
                .collect::<Vec<_>>()
                .join(",");
            sa.set_triggering_object(crate::ability::AbilityKey::Attackers, &csv);
        }
    }

    fn get_important_stack_objects(
        &self,
        _trigger: &super::trigger::Trigger,
        sa: &SpellAbility,
    ) -> String {
        format!(
            "Blocker: {}",
            sa.get_triggering_object(crate::ability::AbilityKey::Blocker)
                .unwrap_or("")
        )
    }
}