def audit(String url, Map params = [:]) {
    def reporter = params.reporter ? params.reporter : 'html'
    def username = params.username ? params.username : ''
    def password = params.password ? params.password : ''
    def standard = params.standard ? params.standard : 'WCAG2AA'
    def includeWarnings = params.includeWarnings ? params.includeWarnings : false
    def includeNotices = params.includeNotices ? params.includeNotices : false
    def cookie = params.cookie ? params.cookie : ''
    def ignoredRules = params.ignoredRules ? params.ignoredRules : ''

    def pa11yImage = buildDockerImage()

    def dockerArgs = """
    -e PA11Y_REPORTER='${reporter}'
    -e PA11Y_URL='${url}'
    -e PA11Y_USERNAME='${username}'
    -e PA11Y_PASSWORD='${password}'
    -e PA11Y_STANDARD='${standard}'
    -e PA11Y_INCLUDE_WARNINGS='${includeWarnings}'
    -e PA11Y_INCLUDE_NOTICES='${includeNotices}'
    -e PA11Y_COOKIE='${cookie}'
    -e PA11Y_IGNORE='${ignoredRules}'
    """

    pa11yImage.inside(dockerArgs) {
        sh 'chown -R pa11y: ./'
        def report = sh(
            script: 'su pa11y - /usr/local/bin/run-audit',
            returnStdout: true
        )

        return report
    }
}

def buildDockerImage() {
    dir('.pa11y') {
        def resourceFiles = [
            'com/cadoles/pa11y/Dockerfile',
            'com/cadoles/pa11y/patty.json.tmpl',
            'com/cadoles/pa11y/run-audit.sh'
        ]

        for (res in resourceFiles) {
            def fileContent = libraryResource res
            def fileName = res.substring(res.lastIndexOf('/') + 1)
            writeFile file:fileName, text:fileContent
        }

        def safeJobName = URLDecoder.decode(env.JOB_NAME).toLowerCase().replace('/', '-').replace(' ', '-')
        def imageTag = "${safeJobName}-${env.BUILD_ID}"
        return docker.build("pa11y:${imageTag}", '.')
    }
}