package com.criteo.gerrit.plugins.automerge;

import com.google.gerrit.server.config.GerritServerConfig;
import com.google.gerrit.server.config.SitePaths;
import com.google.inject.Inject;

import org.eclipse.jgit.lib.Config;

import java.io.File;
import java.io.IOException;


public class AutomergeConfig {

  public final static String ATOMIC_REVIEW_DETECTED_FILE = "atomic_review_detected.txt";
  public final static String ATOMIC_REVIEWS_SAME_REPO_FILE = "atomic_review_same_repo.txt";
  public final static String AUTOMERGE_SECTION = "automerge";
  public final static String BOT_EMAIL_KEY = "botEmail";
  public final static String CANT_MERGE_COMMENT_FILE = "cantmerge.txt";

  private final static String defaultBotEmail = "qabot@criteo.com";
  private final static String defaultTopicPrefix = "crossrepo/";
  public final static String TOPIC_PREFIX_KEY = "topicPrefix";
  private final static String defaultCommentPrefix = "Cross-repo comment:" + System.lineSeparator();
  public final static String COMMENT_PREFIX_KEY = "commitPrefix";

  public static final String getDefaultBotEmail() {
    return defaultBotEmail;
  }

  public static final String getDefaultTopicPrefix() {
    return defaultTopicPrefix;
  }

  private String botEmail;
  private final File templatesPath;
  private String topicPrefix;
  private String commentPrefix;

  @Inject
  public AutomergeConfig(@GerritServerConfig final Config config, final SitePaths paths) {
    botEmail = config.getString(AUTOMERGE_SECTION, null, BOT_EMAIL_KEY);
    if (botEmail == null) {
      botEmail = defaultBotEmail;
    }
    topicPrefix = config.getString(AUTOMERGE_SECTION, null, TOPIC_PREFIX_KEY);
    if (topicPrefix == null) {
      topicPrefix = defaultTopicPrefix;
    }
    commentPrefix = config.getString(AUTOMERGE_SECTION, null, COMMENT_PREFIX_KEY);
    if (commentPrefix == null) {
      commentPrefix = defaultCommentPrefix;
    }

    templatesPath = paths.etc_dir;
  }

  public final String getBotEmail() {
    return botEmail;
  }

  /**
   * Return a comment from a file located in the gerrit etc_dir
   *
   * @param filename
   * @return a string containing a comment.
   * @throws IOException
   */
  public final String getTemplatesPath() {
    return templatesPath.getPath();
  }

  public final String getTopicPrefix() {
    return topicPrefix;
  }

  public String getCommentPrefix() {
    return commentPrefix;
  }
}