/**
 * Yobi, Project Hosting SW
 *
 * Copyright 2013 NAVER Corp.
 * http://yobi.io
 *
 * @author Keesun Baik
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package models;

import org.apache.commons.lang3.StringUtils;
import play.Configuration;
import playRepository.Commit;

import java.util.*;

public class History {

    private String who;

    private String userPageUrl;
    private String userAvatarUrl;
    private Date when;
    private String where;
    private String what;
    private String how;
    private String shortTitle;

    private String url;

    public String getWho() {
        return who;
    }

    public void setWho(String who) {
        this.who = who;
    }

    public Date getWhen() {
        return when;
    }

    public void setWhen(Date when) {
        this.when = when;
    }

    public String getWhere() {
        return where;
    }

    public void setWhere(String where) {
        this.where = where;
    }

    public String getWhat() {
        return what;
    }

    public void setWhat(String what) {
        this.what = what;
    }

    public String getHow() {
        return how;
    }

    public void setHow(String how) {
        this.how = how;
    }

    public String getUrl() {
        return url;
    }

    public void setUrl(String url) {
        String contextRoot = Configuration.root().getString("application.context");
        if(StringUtils.isBlank(contextRoot)){
            this.url = url;
        } else {
            this.url = (contextRoot + "/" + url).replaceAll("//","/");
        }
    }

    public String getUserPageUrl() {
        return userPageUrl;
    }

    public void setUserPageUrl(String userPageUrl) {
        this.userPageUrl = userPageUrl;
    }

    public void setUserAvatarUrl(String userAvatarUrl){
        this.userAvatarUrl = userAvatarUrl;
    }

    public String getUserAvatarUrl(){
        return userAvatarUrl;
    }

    public String getShortTitle() {
        return shortTitle;
    }

    public void setShortTitle(String shortTitle) {
        this.shortTitle = shortTitle;
    }

    public static List<History> makeHistory(String userName, Project project,
                                            List<Commit> commits,
                                            List<Issue> issues,
                                            List<Posting> postings,
                                            List<PullRequest> pullRequests) {
        List<History> histories = new ArrayList<>();
        buildCommitHistory(userName, project, commits, histories);
        buildIssueHistory(userName, project, issues, histories);
        buildPostingHistory(userName, project, postings, histories);
        buildPullRequestsHistory(userName, project, pullRequests, histories);
        sort(histories);
        return histories;
    }

    private static void buildPullRequestsHistory(String userName, Project project, List<PullRequest> pullRequests, List<History> histories) {
        for(PullRequest pull : pullRequests) {
            History pullHistory = new History();
            User contributor = pull.contributor;
            pullHistory.setWho(contributor.loginId);
            setUserPageUrl(pullHistory, User.findByLoginId(contributor.loginId));
            pullHistory.setWhen(pull.created);
            pullHistory.setWhere(project.name);
            pullHistory.setWhat("pullrequest");
            pullHistory.setShortTitle("#" + pull.number);
            pullHistory.setHow(pull.title);
            pullHistory.setUrl("/" + userName + "/" + project.name + "/pullRequest/" + pull.number);
            histories.add(pullHistory);
        }
    }

    private static void sort(List<History> histories) {
        Collections.sort(histories, new Comparator<History>() {
            @Override
            public int compare(History h1, History h2) {
                return h2.getWhen().compareTo(h1.getWhen());
            }
        });
    }

    private static void buildPostingHistory(String userName, Project project, List<Posting> postings, List<History> histories) {
        for(Posting posting : postings) {
            History postingHistory = new History();
            String authorName = posting.authorName;
            postingHistory.setWho(authorName);
            setUserPageUrl(postingHistory, User.findByLoginId(posting.authorLoginId));
            postingHistory.setWhen(posting.createdDate);
            postingHistory.setWhere(project.name);
            postingHistory.setWhat("post");
            postingHistory.setShortTitle("#" + posting.number);
            postingHistory.setHow(posting.title);
            postingHistory.setUrl("/" + userName + "/" + project.name + "/post/" + posting.number);
            histories.add(postingHistory);
        }
    }

    private static void buildIssueHistory(String userName, Project project, List<Issue> issues, List<History> histories) {
        for(Issue issue : issues) {
            History issueHistory = new History();
            String authorName = issue.authorName;
            issueHistory.setWho(authorName);
            setUserPageUrl(issueHistory, User.findByLoginId(issue.authorLoginId));
            issueHistory.setWhen(issue.createdDate);
            issueHistory.setWhere(project.name);
            issueHistory.setWhat("issue");
            issueHistory.setShortTitle("#" + issue.number);
            issueHistory.setHow(issue.title);
            issueHistory.setUrl("/" + userName + "/" + project.name + "/issue/" + issue.number);
            histories.add(issueHistory);
        }
    }

    private static void buildCommitHistory(String userName, Project project, List<Commit> commits, List<History> histories) {
        if(commits != null) {
            for(Commit commit : commits) {
                History commitHistory = new History();
                String authorEmail = commit.getAuthorEmail();
                if(User.isEmailExist(authorEmail)) {
                    setUserPageUrl(commitHistory, User.findByEmail(authorEmail));
                } else {
                    commitHistory.setWho(commit.getAuthorName());
                }
                commitHistory.setWhen(commit.getCommitterDate());
                commitHistory.setWhere(project.name);
                commitHistory.setWhat("commit");
                commitHistory.setShortTitle(commit.getShortId());
                commitHistory.setHow(commit.getShortMessage());
                commitHistory.setUrl("/" + userName + "/" + project.name + "/commit/" + commit.getId());
                histories.add(commitHistory);
            }
        }
    }

    private static void setUserPageUrl(History history, User user) {
        history.setWho(user.name);
        history.setUserPageUrl("/" + user.loginId);
        history.setUserAvatarUrl(user.avatarUrl());
    }
}