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use crate::Kurinji;
use bevy::app::Events;
use bevy::ecs::{
    Res,
    ResMut,
};
/// Event that is fired when action is active.
/// This depends on what event phase is set to
/// the action by default it will be OnProgress.
pub struct OnActionActive
{
    pub action:   String,
    pub strength: f32,
}
/// Event that gets fired at the beginning
/// of an action
pub struct OnActionBegin
{
    pub action:   String,
    pub strength: f32,
}
/// Event that gets fired during
/// an action
pub struct OnActionProgress
{
    pub action:   String,
    pub strength: f32,
}
/// Event that gets fired at the end
/// of an action
pub struct OnActionEnd
{
    pub action: String,
}
impl Kurinji
{
    pub(crate) fn action_event_producer(input_map: Res<Kurinji>,
                                        mut on_active_event: ResMut<Events<OnActionActive>>,
                                        mut on_begin_event: ResMut<Events<OnActionBegin>>,
                                        mut on_progress_event: ResMut<Events<OnActionProgress>>,
                                        mut on_end_event: ResMut<Events<OnActionEnd>>)
    {
        // merge keys, required for action end to be fired properly.
        // Since released actions won't be part of raw strength
        let mut _actions = input_map.action_raw_strength.clone();
        for (a, s) in input_map.action_prev_strength.iter()
        {
            if !_actions.contains_key(a)
            {
                _actions.insert(a.clone(), s.clone());
            }
        }
        for (action, strength) in _actions
        {
            if input_map.is_action_active(&action)
            {
                on_active_event.send(OnActionActive { action:   action.clone(),
                                                      strength: strength, });
            }
            if input_map.did_action_just_began(&action)
            {
                on_begin_event.send(OnActionBegin { action:   action.clone(),
                                                    strength: strength, });
            }
            if input_map.is_action_in_progress(&action)
            {
                on_progress_event.send(OnActionProgress {
                    action: action.clone(),
                    strength: strength,
                });
            }
            if input_map.did_action_just_end(&action)
            {
                on_end_event.send(OnActionEnd { action: action.clone(), });
            }
        }
    }
}