com.github.bloodshura.sparkium.mail.MailProvider Maven / Gradle / Ivy

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An API which aims to facilitate the usage of javax.mail, also including other mailing services.

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package com.github.bloodshura.sparkium.mail;

import com.github.bloodshura.ignitium.collection.map.XMap;
import com.github.bloodshura.ignitium.collection.map.impl.XLinkedMap;
import com.github.bloodshura.ignitium.collection.tuple.Pair;
import com.github.bloodshura.ignitium.collection.view.XView;
import com.github.bloodshura.sparkium.mail.component.Email;
import com.github.bloodshura.sparkium.mail.impl.JavaMailImplementations;

import javax.annotation.Nonnull;
import java.util.function.Predicate;

public class MailProvider {
	private static final MailProvider DEFAULT;
	private final XMap, Predicate> map;

	static {
		// TODO IBestMail suffix?!
		DEFAULT = new MailProvider();
		DEFAULT.register(JavaMailImplementations.AolMail.class, suffix -> suffix.contains("aol"));
		DEFAULT.register(JavaMailImplementations.BolMail.class, suffix -> suffix.contains("bol"));
		DEFAULT.register(JavaMailImplementations.GloboMail.class, suffix -> suffix.contains("globo"));
		DEFAULT.register(JavaMailImplementations.GoogleMail.class, suffix -> suffix.contains("gmail"));
		DEFAULT.register(JavaMailImplementations.HotMail.class, suffix -> suffix.contains("hotmail"));
		DEFAULT.register(JavaMailImplementations.HotMail.class, suffix -> suffix.contains("live"));
		DEFAULT.register(JavaMailImplementations.IgMail.class, suffix -> suffix.contains("ig"));
		DEFAULT.register(JavaMailImplementations.TerraMail.class, suffix -> suffix.contains("terra"));
		DEFAULT.register(JavaMailImplementations.UolMail.class, suffix -> suffix.contains("uol"));
		DEFAULT.register(JavaMailImplementations.YahooMail.class, suffix -> suffix.contains("yahoo"));
	}

	public MailProvider() {
		this.map = new XLinkedMap<>();
	}

	@Nonnull
	public Mail get(@Nonnull Email email) throws MailException {
		Pair, Predicate> pair = map.selectFirst(p -> p.getRight().test(email.getSuffix()));

		if (pair == null) {
			throw new MailException("No implementation found for \"" + email.getSuffix() + '"');
		}

		try {
			return pair.getLeft().newInstance();
		} catch (IllegalAccessException | InstantiationException exception) {
			throw new MailException("Could not create new instance of " + pair.getLeft(), exception);
		}
	}

	@Nonnull
	public XView> getImplementations() {
		return map.keys();
	}

	public void register(@Nonnull Class implClass, @Nonnull Predicate implMatcher) {
		map.add(implClass, implMatcher);
	}

	@Nonnull
	public static Mail provide(@Nonnull Email email) throws MailException {
		return DEFAULT.get(email);
	}
}