task variantsNorm {
	File vcf
	File ref_dir
	String fasta
	String sampleName
	String docker
	String cluster_config
	String disk_size
	
	command <<<

		cat ${vcf} | grep '#' > header
		cat ${vcf} | grep -v '#' > body
		cat body | grep -w '^chr1\|^chr2\|^chr3\|^chr4\|^chr5\|^chr6\|^chr7\|^chr8\|^chr9\|^chr10\|^chr11\|^chr12\|^chr13\|^chr14\|^chr15\|^chr16\|^chr17\|^chr18\|^chr19\|^chr20\|^chr21\|^chr22\|^chrX' > body.filtered
		cat header body.filtered > ${sampleName}.filtered.vcf

		/opt/hall-lab/bcftools-1.9/bin/bcftools norm -f ${ref_dir}/${fasta} ${sampleName}.filtered.vcf > ${sampleName}.normed.vcf

	>>>

	runtime {
		docker:docker
		cluster: cluster_config
		systemDisk: "cloud_ssd 40"
		dataDisk: "cloud_ssd " + disk_size + " /cromwell_root/"
	}
	output {
		File normed_vcf = "${sampleName}.normed.vcf"
	}
}