package com.github.dtschust.zork.parser.strategies;

import com.github.dtschust.zork.ZorkCondition;
import com.github.dtschust.zork.ZorkTrigger;
import com.github.dtschust.zork.objects.ZorkCreature;
import com.github.dtschust.zork.parser.Property;
import com.github.dtschust.zork.parser.PropertyParseStrategy;
import com.github.dtschust.zork.parser.TriggerPropertyParseStrategy;

import java.util.List;
import java.util.stream.Collectors;

public class ZorkCreatureParseStrategy implements PropertyParseStrategy<ZorkCreature> {

    private final PropertyParseStrategy<ZorkCondition> conditionStrategy;
    private final TriggerPropertyParseStrategy triggerStrategy;

    public ZorkCreatureParseStrategy(final PropertyParseStrategy<ZorkCondition> conditionStrategy,
                                     final TriggerPropertyParseStrategy triggerStrategy) {
        this.conditionStrategy = conditionStrategy;
        this.triggerStrategy = triggerStrategy;
    }

    @Override
    public ZorkCreature parse(final Property source) {
        final List<? extends Property> attacks = source.subPropertiesByName("attack");

        // Get all possible creature attributes
        final List<ZorkCondition> conditions = attacks.stream()
                .flatMap(e -> e.subPropertiesByName("condition").stream())
                .map(conditionStrategy::parse)
                .collect(Collectors.toList());

        final List<String> prints = attacks.stream()
                .flatMap(e -> e.subPropertyValues("print").stream())
                .collect(Collectors.toList());

        final List<String> actions = attacks.stream()
                .flatMap(e -> e.subPropertyValues("action").stream())
                .collect(Collectors.toList());

        final List<String> vulnerabilities = source.subPropertyValues("vulnerability");

        final List<ZorkTrigger> triggers = source.subPropertiesByName("trigger").stream()
                .map(triggerStrategy.parse(source))
                .collect(Collectors.toList());

        final String name = source.subPropertyValue("name", "");

        final String description = source.subPropertyValue("description", "");

        final String status = source.subPropertyValue("status", "");

        return new ZorkCreature(name, description, status, triggers, vulnerabilities, conditions, prints, actions);
    }
}