import groovy.io.FileType
import groovy.transform.stc.ClosureParams
import groovy.transform.stc.SimpleType

ext {
    autoResConfig = this.&autoResConfig
}

def allStringsResourceFiles(@ClosureParams(value = SimpleType.class, options = ['java.io.File']) Closure c) {
    file('res').eachFileRecurse(FileType.FILES) { f ->
        if (f.name == 'strings.xml') {
            c(f)
        }
    }
}

/**
 * Discovers supported languages listed as under the res/values- directory.
 */
def autoResConfig() {
    def files = []
    allStringsResourceFiles { f ->
        files.add(f.parentFile.name)
    }
    ['en'] + files.collect { f -> f =~ /^values-([a-z]{2}(-r[A-Z]{2})?)$/ }
            .findAll { matcher -> matcher.find() }
            .collect { matcher -> matcher.group(1) }
            .sort()
}

task pullTranslations(type: Exec) {
    group 'Translate'
    description 'Pull translations, requires transifex client and api key.'
    commandLine 'tx', 'pull', '-a', '--minimum-perc=80', '--force'
}

task replaceEllipsis {
    group 'Translate'
    description 'Process strings for ellipsis characters.'
    doLast {
        allStringsResourceFiles { f ->
            def before = f.text
            def after = f.text.replace('...', '…')
            if (before != after) {
                f.text = after
                logger.info("$f.parentFile.name/$f.name...updated")
            }
        }
    }
    mustRunAfter pullTranslations
}

task cleanApostropheErrors {
    group 'Translate'
    description 'Fix transifex apostrophe string errors.'
    doLast {
        allStringsResourceFiles { f ->
            def before = f.text
            def after = before.replaceAll(/([^\\=08])(')/,'$1\\\\\'')
            if (before != after) {
                f.text = after
                logger.info("$f.parentFile.name/$f.name...updated")
            }
        }
    }
    mustRunAfter replaceEllipsis
}

task translate {
    group 'Translate'
    description 'Pull translations and post-process for ellipsis and apostrophes.'
    dependsOn pullTranslations, replaceEllipsis, cleanApostropheErrors
}