<?php

/**
 * Message emitted by a linter, like an error or warning.
 *
 * @group lint
 */
final class ArcanistLintMessage {

  protected $path;
  protected $line;
  protected $char;
  protected $code;
  protected $severity;
  protected $name;
  protected $description;
  protected $originalText;
  protected $replacementText;
  protected $appliedToDisk;
  protected $dependentMessages = array();
  protected $otherLocations = array();
  protected $obsolete;
  protected $uncacheable;

  public static function newFromDictionary(array $dict) {
    $message = new ArcanistLintMessage();

    $message->setPath($dict['path']);
    $message->setLine($dict['line']);
    $message->setChar($dict['char']);
    $message->setCode($dict['code']);
    $message->setSeverity($dict['severity']);
    $message->setName($dict['name']);
    $message->setDescription($dict['description']);
    if (isset($dict['original'])) {
      $message->setOriginalText($dict['original']);
    }
    if (isset($dict['replacement'])) {
      $message->setReplacementText($dict['replacement']);
    }
    $message->setOtherLocations(idx($dict, 'locations', array()));
    return $message;
  }

  public function toDictionary() {
    return array(
      'path'        => $this->getPath(),
      'line'        => $this->getLine(),
      'char'        => $this->getChar(),
      'code'        => $this->getCode(),
      'severity'    => $this->getSeverity(),
      'name'        => $this->getName(),
      'description' => $this->getDescription(),
      'original'    => $this->getOriginalText(),
      'replacement' => $this->getReplacementText(),
      'locations'   => $this->getOtherLocations(),
    );
  }

  public function setPath($path) {
    $this->path = $path;
    return $this;
  }

  public function getPath() {
    return $this->path;
  }

  public function setLine($line) {
    $this->line = $line;
    return $this;
  }

  public function getLine() {
    return $this->line;
  }

  public function setChar($char) {
    $this->char = $char;
    return $this;
  }

  public function getChar() {
    return $this->char;
  }

  public function setCode($code) {
    $this->code = $code;
    return $this;
  }

  public function getCode() {
    return $this->code;
  }

  public function setSeverity($severity) {
    $this->severity = $severity;
    return $this;
  }

  public function getSeverity() {
    return $this->severity;
  }

  public function setName($name) {
    $this->name = $name;
    return $this;
  }

  public function getName() {
    return $this->name;
  }

  public function setDescription($description) {
    $this->description = $description;
    return $this;
  }

  public function getDescription() {
    return $this->description;
  }

  public function setOriginalText($original) {
    $this->originalText = $original;
    return $this;
  }

  public function getOriginalText() {
    return $this->originalText;
  }

  public function setReplacementText($replacement) {
    $this->replacementText = $replacement;
    return $this;
  }

  public function getReplacementText() {
    return $this->replacementText;
  }

  /**
   * @param dict Keys 'path', 'line', 'char', 'original'.
   */
  public function setOtherLocations(array $locations) {
    assert_instances_of($locations, 'array');
    $this->otherLocations = $locations;
    return $this;
  }

  public function getOtherLocations() {
    return $this->otherLocations;
  }

  public function isError() {
    return $this->getSeverity() == ArcanistLintSeverity::SEVERITY_ERROR;
  }

  public function isWarning() {
    return $this->getSeverity() == ArcanistLintSeverity::SEVERITY_WARNING;
  }

  public function isAutofix() {
    return $this->getSeverity() == ArcanistLintSeverity::SEVERITY_AUTOFIX;
  }

  public function hasFileContext() {
    return ($this->getLine() !== null);
  }

  public function setObsolete($obsolete) {
    $this->obsolete = $obsolete;
    return $this;
  }

  public function getObsolete() {
    return $this->obsolete;
  }

  public function isPatchable() {
    return ($this->getReplacementText() !== null) &&
           ($this->getReplacementText() !== $this->getOriginalText());
  }

  public function didApplyPatch() {
    if ($this->appliedToDisk) {
      return $this;
    }
    $this->appliedToDisk = true;
    foreach ($this->dependentMessages as $message) {
      $message->didApplyPatch();
    }
    return $this;
  }

  public function isPatchApplied() {
    return $this->appliedToDisk;
  }

  public function setUncacheable($bool) {
    $this->uncacheable = $bool;
    return $this;
  }

  public function isUncacheable() {
    return $this->uncacheable;
  }

  public function setDependentMessages(array $messages) {
    assert_instances_of($messages, 'ArcanistLintMessage');
    $this->dependentMessages = $messages;
    return $this;
  }

}