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/*
 * Copyright (C) 2008-2019, Juick
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero 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
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.juick.server.api.webfinger;

import com.juick.model.User;
import com.juick.server.api.webfinger.model.Account;
import com.juick.server.api.webfinger.model.Link;
import com.juick.server.util.HttpNotFoundException;
import com.juick.service.UserService;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.util.UriComponentsBuilder;
import rocks.xmpp.addr.Jid;

import javax.inject.Inject;
import java.util.Collections;

import static com.juick.server.api.activity.model.Context.ACTIVITY_MEDIA_TYPE;

@RestController
public class Resource {
    @Inject
    private UserService userService;
    @Value("${web_domain:localhost}")
    private String domain;
    @Value("${ap_base_uri:http://localhost:8080/}")
    private String baseUri;

    @GetMapping(value = "/.well-known/webfinger", produces = "application/jrd+json;charset=utf-8")
    public Account getWebResource(@RequestParam String resource) {
        if (resource.startsWith("acct:")) {
            Jid account = Jid.of(resource.substring(5));
            if (account.getDomain().equals(domain)) {
                User user = userService.getUserByName(account.getLocal());
                if (!user.isAnonymous()) {
                    UriComponentsBuilder builder = UriComponentsBuilder.fromHttpUrl(baseUri);
                    builder.path(String.format("/u/%s", user.getName()));
                    Link blog = new Link();
                    blog.setRel("self");
                    blog.setType(ACTIVITY_MEDIA_TYPE);
                    blog.setHref(builder.toUriString());
                    Account result = new Account();
                    result.setSubject(resource);
                    result.setLinks(Collections.singletonList(blog));
                    return result;
                }
            }
        }
        throw new HttpNotFoundException();
    }
}