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/*
 * Copyright (c) 2012, Francis Galiegue 
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the Lesser GNU General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * Lesser GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see .
 */

package com.github.fge.jsonschema.examples;

import com.fasterxml.jackson.databind.JsonNode;
import com.github.fge.jsonschema.cfg.LoadingConfiguration;
import com.github.fge.jsonschema.cfg.LoadingConfigurationBuilder;
import com.github.fge.jsonschema.exceptions.ProcessingException;
import com.github.fge.jsonschema.main.JsonSchema;
import com.github.fge.jsonschema.main.JsonSchemaFactory;
import com.github.fge.jsonschema.ref.JsonRef;
import com.github.fge.jsonschema.report.ProcessingReport;

import java.io.IOException;

/**
 * Sixth example: URI redirection
 *
 * link to source code
 *
 * In this example, the same schema file is used as in {@link Example1}. This
 * time, though, it is assumed that the base URI used for addressing this schema
 * is {@code http://my.site/schemas/fstab.json#}. But instead of trying to
 * fetch it from the web directly, we want to use the local copy, which is
 * located under URI {@code
 * resource:/org/eel/kitchen/jsonschema/examples/fstab.json#}.
 *
 * The solution is here again to build a custom {@link LoadingConfiguration},
 * which allows to add schema redirections (using {@link
 * LoadingConfigurationBuilder#addSchemaRedirect(String, String)}. This method
 * can be called for as many schemas as you wish to redirect.
 *
 * The effect is that if you required a schema via URI {@code
 * http://my.site/schemas/fstab.json#}, it will silently transform this URI into
 * {@code resource:/org/eel/kitchen/jsonschema/examples/fstab.json#}
 * internally.
 *
 * Note that URIs must be absolute JSON references (see {@link JsonRef}).
 */
public final class Example6
    extends ExampleBase
{
    private static final String FROM = "http://my.site/schemas/fstab.json#";
    private static final String TO
        = "resource:/com/github/fge/jsonschema/examples/fstab.json#";

    public static void main(final String... args)
        throws IOException, ProcessingException
    {
        final JsonNode good = loadResource("/fstab-good.json");
        final JsonNode bad = loadResource("/fstab-bad.json");
        final JsonNode bad2 = loadResource("/fstab-bad2.json");

        final LoadingConfiguration cfg = LoadingConfiguration.newBuilder()
            .addSchemaRedirect(FROM, TO).freeze();

        final JsonSchemaFactory factory = JsonSchemaFactory.newBuilder()
            .setLoadingConfiguration(cfg).freeze();

        final JsonSchema schema = factory.getJsonSchema(FROM);

        ProcessingReport report;

        report = schema.validate(good);
        printReport(report);

        report = schema.validate(bad);
        printReport(report);

        report = schema.validate(bad2);
        printReport(report);
    }
}