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89 lines (71 loc) · 3.32 KB
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package com.abilityapi.sequenceapi;
import com.abilityapi.sequenceapi.action.Action;
import com.abilityapi.sequenceapi.action.ActionBuilder;
import com.abilityapi.sequenceapi.action.type.after.AfterAction;
import com.abilityapi.sequenceapi.action.type.after.AfterActionBuilder;
import com.abilityapi.sequenceapi.action.type.observe.ObserverAction;
import com.abilityapi.sequenceapi.action.type.observe.ObserverActionBlueprint;
import com.abilityapi.sequenceapi.action.type.observe.ObserverActionBuilder;
import com.abilityapi.sequenceapi.action.type.schedule.ScheduleAction;
import com.abilityapi.sequenceapi.action.type.schedule.ScheduleActionBuilder;
import java.util.ArrayList;
import java.util.List;
import java.util.NoSuchElementException;
public class SequenceBuilder<T> implements ActionBuilder<T> {
private final List<Action> actions = new ArrayList<>();
@Override
public ObserverActionBuilder<T> observe(final Class<? extends T> event) {
return this.observe(new ObserverAction<>(event));
}
@Override
public ObserverActionBuilder<T> observe(final ObserverActionBlueprint<T> actionBlueprint) {
return this.observe(actionBlueprint.create());
}
@Override
public ObserverActionBuilder<T> observe(final ObserverAction<T> action) {
this.actions.add(action);
return new ObserverActionBuilder<>(this, action);
}
@Override
public AfterActionBuilder<T> after() {
return this.after(new AfterAction());
}
@Override
public AfterActionBuilder<T> after(AfterAction action) {
this.actions.add(action);
return new AfterActionBuilder<>(this, action);
}
@Override
public ScheduleActionBuilder<T> schedule() {
return this.schedule(new ScheduleAction());
}
@Override
public ScheduleActionBuilder<T> schedule(final ScheduleAction action) {
this.actions.add(action);
return new ScheduleActionBuilder<>(this, action);
}
@Override
public SequenceBlueprint<T> build(final SequenceContext buildContext) {
return new SequenceBlueprint<T>() {
@Override
public final Sequence<T> create(final T rootEvent, final SequenceContext createSequenceContext) {
final SequenceContext createContext = SequenceContext.from(createSequenceContext)
.custom("_triggerClass", this.getTrigger())
.custom("_triggerInstance", rootEvent)
.merge(buildContext).build();
return new Sequence<>(rootEvent, SequenceBuilder.this.actions, createContext, this, Sequence.getComparatorEqual());
}
@Override
public final Class<? extends T> getTrigger() {
if (SequenceBuilder.this.actions.isEmpty()) throw new NoSuchElementException("Sequence could not be established without an initial observer action.");
if (SequenceBuilder.this.actions.get(0) instanceof ObserverAction) {
return ((ObserverAction<T>) SequenceBuilder.this.actions.get(0)).getEventClass();
} else throw new ClassCastException("Sequence could not be established without an initial observer action.");
}
@Override
public SequenceContext getContext() {
return buildContext;
}
};
}
}