task runstatistics {
    String name
    String outputDir
    String rmdupBam

    String ref
    String codesDir
    String bed

    command <<<

        if [ ! -d ${outputDir}/qc/${name}_bamdst ];then
        mkdir -p ${outputDir}/qc/${name}_bamdst
        fi

        samtools flagstat -@ 10 ${rmdupBam} >${outputDir}/qc/${name}.rmdup.flagstat
        samtools stats --reference ${ref} -t ${bed} -@ 10 ${rmdupBam} > ${outputDir}/qc/${name}.rmdup.stat
        bamdst -p ${bed} -o ${outputDir}/qc/${name}_bamdst ${rmdupBam}

        Rscript ${codesDir}/InsertAndDepthStat.R \
        ${outputDir}/qc/${name}_InsertAndDepthStat \
        ${outputDir}/qc/${name}_bamdst/insertsize.plot \
        ${outputDir}/qc/${name}_bamdst/depth_distribution.plot
    >>>
}

workflow statistics {

    String tumor
    String tumor_rmdupBam

    String? normal
    String? normal_rmdupBam

    String ref
    String bed
    String outputDir
    String codesDir

    scatter(name in [tumor, normal]) {
        if (defined(name)) {
            call runstatistics {
                input:
                    name=name,
                    outputDir=outputDir,
                    rmdupBam=if name==tumor then tumor_rmdupBam else normal_rmdupBam,
                    ref=ref,
                    codesDir=codesDir,
                    bed=bed
            }
        }
    }

    output {
        String tumor_bamdst_depth = "${outputDir}/qc/${tumor}_bamdst/depth.tsv.gz"
    }
}