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use forge_foundation::ZoneType;
use super::{matches_valid_cards_for_sa, EffectContext};
/// `SP$ ChooseCard` — player chooses card(s) from a filtered set in a zone.
///
/// Mirrors Java's `ChooseCardEffect.java`.
///
/// # Params
/// - `Amount` — how many cards to choose (default 1)
/// - `ChoiceZone` — zone to choose from (default Battlefield)
/// - `Choices` — ValidCards filter for eligible cards
/// - `RememberChosen` — if "True", add chosen to source's remembered_cards
///
/// Stores the chosen card(s) on the source card's `chosen_cards`.
/// Struct form of this effect so it can participate in the
/// `SpellAbilityEffect` trait hierarchy — mirrors Java's
/// `ChooseCardEffect` class extending `SpellAbilityEffect`.
#[manabrew_engine_macros::spell_effect(ChooseCardEffect)]
fn resolve(ctx: &mut EffectContext, sa: &crate::spellability::SpellAbility) {
let source_id = match sa.source {
Some(id) => id,
None => return,
};
let controller = sa.activating_player;
let amount: usize = sa
.ir
.amount
.as_deref()
.and_then(|s| s.parse().ok())
.unwrap_or(1);
let zone = sa.ir.choice_zone.unwrap_or(ZoneType::Battlefield);
let filter = sa.ir.choices.clone().unwrap_or_else(|| "Card".to_string());
let filter_selector = sa.ir.choices_selector.clone();
let remember = sa.ir.remember_chosen;
// Collect valid cards in zone matching filter
let mut valid = Vec::new();
for &pid in &ctx.game.player_order.clone() {
let zone_cards = ctx.game.cards_in_zone(zone, pid).to_vec();
for cid in zone_cards {
if matches_valid_cards_for_sa(
ctx.game,
sa,
ctx.game.card(cid),
filter_selector.as_ref(),
&filter,
) {
valid.push(cid);
}
}
}
if valid.is_empty() {
return;
}
// Ask the controlling player to choose
ctx.agents[controller.index()].snapshot_state(ctx.game, ctx.mana_pools);
let chosen =
ctx.agents[controller.index()].choose_cards_for_effect(controller, &valid, 1, amount);
// Store on source card
ctx.game
.card_mut(source_id)
.set_chosen_cards(chosen.clone());
// Optionally remember
if remember {
for &cid in &chosen {
ctx.game.card_mut(source_id).add_remembered_card(cid);
}
}
// ImprintChosen$ — `ChooseCardEffect.java:299-301`.
if sa.ir.imprint_chosen {
for &cid in &chosen {
ctx.game.card_mut(source_id).add_imprinted_card(cid);
}
}
}