// *************************
// * This gradle script should be included in the build.gradle by
// * using: apply from: 'replace-newpipe-with-bravenewpipe-strings.gradle'
// *************************
// * It will replace all NewPipe occurrences with BraveNewPipe in any
// * strings.xml file. But some string references we do not want to change.
// * Therefore they are listed in the 'doNotReplaceLinesContaining' array.
// *************************

// begin -- vars and helper function
// array of strings that contain NewPipe but should not be replaced
def doNotReplaceLinesContaining = [
        'name="donation_encouragement"',
        'name="contribution_encouragement"',
        'name="website_encouragement"',
        'name="brave_about_fork"'
]

def shouldWeReplaceStuffInThisLine = { line ->
    for (pattern in doNotReplaceLinesContaining) {
        if (line.contains(pattern)) {
            return false
        }
    }
    return true
}

def cleanupDirBefore = { dir ->
    delete "${dir}"
}

// the return value points to the new srcDir containing the modified files
ext.copyFilesAndReplaceStrings = { dir, tmpTargetDir ->
    println "[BraveNewPipe string replacing] source dir: " + dir
    println "[BraveNewPipe string replacing] target dir: " + tmpTargetDir
    copy {
        from(dir)
        include '**/strings.xml'
        filteringCharset = 'UTF-8'
        filter {
            line ->
                if (shouldWeReplaceStuffInThisLine(line)) {
                    line
                        .replace('NewPipe', 'BraveNewPipe')
                        .replace('Newpipe', 'BraveNewPipe')
                        .replace('নিউপাইপ', 'সাহসী নিউপাইপ') // bn (bengali)
                        .replace('نیوپایپ', 'لوله جدید شجاع') // fa, czk (farsi)
                } else {
                    line
                }
        }
        into("${tmpTargetDir}")
    }
    copy {
        from(dir)
        exclude '**/strings.xml'
        into("${tmpTargetDir}")
    }
    return "${tmpTargetDir}"
}
// end -- vars and helper function

// * * * * * * * * * * * *
// Do the actual replacing.
// * * * * * * * * * * * *
// source: https://stackoverflow.com/questions/40843740/replace-word-in-strings-xml-with-gradle-for-a-buildtype/57533688#57533688
// https://michd.me/jottings/gradle-variant.getx-is-obsolete/
android.applicationVariants.all { variant ->
    variant.mergeResourcesProvider.getOrNull()?.doFirst {
        variant.sourceSets.each { sourceSet ->
            sourceSet.res.srcDirs = sourceSet.res.srcDirs.collect { dir ->
                def relDir = relativePath(dir)
                def tmpTargetDir = "${buildDir}/tmp/${variant.dirName}/${relDir}"
                cleanupDirBefore(tmpTargetDir)
                return copyFilesAndReplaceStrings(dir, tmpTargetDir)
            }
        }
    }
}

// only for testing copyFilesAndReplaceStrings()
task testReplacingStrings() {
    return // comment complete line if you want to run this task

    println "[TESTING BraveNewPipe string replacing]"

    def relativeDirFile = 'src/main/res'
    def sourceDir = "${rootDir}/app/${relativeDirFile}/"
    def targetDir = "${buildDir}/tmp/${relativeDirFile}/test_output"

    cleanupDirBefore(targetDir)
    copyFilesAndReplaceStrings(sourceDir, targetDir)
}