import groovy.json.JsonSlurper

import javax.net.ssl.HttpsURLConnection
import java.nio.charset.StandardCharsets

apply plugin: 'elasticsearch.testclusters'
apply plugin: 'elasticsearch.standalone-rest-test'
apply plugin: 'elasticsearch.rest-test'

dependencies {
  testCompile project(':x-pack:plugin:core')
  testCompile project(path: xpackModule('watcher'), configuration: 'runtime')
}

restResources {
  restApi {
    includeXpack 'watcher'
  }
}

String jiraUrl = System.getenv('jira_url')
String jiraUser = System.getenv('jira_user')
String jiraPassword = System.getenv('jira_password')
String jiraProject = System.getenv('jira_project')

task cleanJira(type: DefaultTask) {
  doLast {
    List<String> issues = jiraIssues(jiraProject)
    assert issues instanceof List
    issues.forEach {
      // See https://docs.atlassian.com/jira/REST/cloud/#api/2/issue-deleteIssue
      logger.debug("Deleting JIRA issue [${it}]")
      jiraHttpRequest("issue/${it}", "DELETE", 204)
    }
  }
}

// require network access for this one, exit early instead of starting up the cluster if we dont have network
if (!jiraUrl && !jiraUser && !jiraPassword && !jiraProject) {
  integTest.enabled = false
  testingConventions.enabled = false
} else {
  testClusters.integTest {
    testDistribution = 'DEFAULT'
    setting 'xpack.security.enabled', 'false'
    setting 'xpack.monitoring.enabled', 'false'
    setting 'xpack.ml.enabled', 'false'
    setting 'xpack.license.self_generated.type', 'trial'
    setting 'logger.org.elasticsearch.xpack.watcher', 'DEBUG'
    setting 'xpack.notification.jira.account.test.issue_defaults.issuetype.name', 'Bug'
    setting 'xpack.notification.jira.account.test.issue_defaults.labels.0', 'integration-tests'
    setting 'xpack.notification.jira.account.test.issue_defaults.project.key', jiraProject
    keystore 'xpack.notification.jira.account.test.secure_url', jiraUrl
    keystore 'xpack.notification.jira.account.test.secure_user', jiraUser
    keystore 'xpack.notification.jira.account.test.secure_password', jiraPassword
  }
  integTest.runner.finalizedBy cleanJira
}

/** List all issues associated to a given Jira project **/
def jiraIssues(projectKey) {
  // See https://docs.atlassian.com/jira/REST/cloud/#api/2/search-search
  def response = jiraHttpRequest("search?maxResults=100&fields=id,self,key&jql=project%3D${projectKey}", "GET", 200)
  assert response.issues instanceof List
  return response.issues.findAll { it.key.startsWith(projectKey) }.collect { it.key }
}

/** Execute an HTTP request against the Jira server instance **/
def jiraHttpRequest(String endpoint, String method, int successCode) {
  HttpsURLConnection connection = null;
  try {
    byte[] credentials = "${jiraUser}:${jiraPassword}".getBytes(StandardCharsets.UTF_8);
    connection = (HttpsURLConnection) new URL("${jiraUrl}/rest/api/2/${endpoint}").openConnection();
    connection.setRequestProperty("Authorization", "Basic " + Base64.getEncoder().encodeToString(credentials));
    connection.setRequestMethod(method);
    connection.connect();

    if (connection.getResponseCode() == successCode) {
      String response = connection.getInputStream().getText(StandardCharsets.UTF_8.name());
      if (response != null && response.length() > 0) {
        return new JsonSlurper().parseText(response)
      }
    } else {
      throw new GradleException("Unexpected response code for [${endpoint}]: got ${connection.getResponseCode()} but expected ${successCode}")
    }
  } catch (Exception e) {
    logger.error("Failed to delete JIRA issues after test execution", e)
  } finally {
    if (connection != null) {
      connection.disconnect();
    }
  }
  return null
}