common.wdl

version 1.0

task AppendToStringArray {
    input {
        Array[String] array
        String string
    }

    command {
        echo "~{sep='\n' array}
        ~{string}"
    }

    output {
        Array[String] outArray = read_lines(stdout())
    }

    runtime {
        memory: 1
    }
}

# This task will fail if the MD5sum doesn't match the file.
task CheckFileMD5 {
    input {
        File file
        String MD5sum
    }

    command {
        set -e -o pipefail
        MD5SUM=$(md5sum ~{file} | cut -d ' ' -f 1)
        [ $MD5SUM = ~{MD5sum} ]
    }
}

task ConcatenateTextFiles {
    input {
        Array[File] fileList
        String combinedFilePath
        Boolean? unzip = false
        Boolean? zip = false
    }

    command {
        set -e -o pipefail
        ~{"mkdir -p $(dirname " + combinedFilePath + ")"}
        ~{true='zcat' false= 'cat' unzip} ~{sep=' ' fileList} \
        ~{true="| gzip -c" false="" zip} > ~{combinedFilePath}
    }

    output {
        File combinedFile = combinedFilePath
    }

    runtime {
        memory: 1
    }
}

task CreateLink {
    # Making this of type File will create a link to the copy of the file in the execution
    # folder, instead of the actual file.
    input {
        String inputFile
        String outputPath
    }

    command {
        ln -sf ~{inputFile} ~{outputPath}
    }

    output {
        File link = outputPath
    }
}

# DEPRECATED. USE BUILT-IN FLATTEN FUNCTION
# task FlattenStringArray {}
# Commented out to let pipelines that depend on this fail.

task MapMd5 {
    input {
        Map[String,String] map
    }

    command {
        cat ~{write_map(map)} | md5sum - | sed -e 's/  -//'
    }

    output {
        String md5sum = read_string(stdout())
    }

    runtime {
        memory: 1
    }
}


task ObjectMd5 {
    input {
        Object the_object
    }

    command {
        cat ~{write_object(the_object)} |  md5sum - | sed -e 's/  -//'
    }

    output {
        String md5sum = read_string(stdout())
    }

    runtime {
        memory: 1
    }
}

task StringArrayMd5 {
    input {
        Array[String] stringArray
    }

    command {
        set -eu -o pipefail
        echo ~{sep=',' stringArray} | md5sum - | sed -e 's/  -//'
    }

    output {
        String md5sum = read_string(stdout())
    }

    runtime {
        memory: 1
    }
}