// Import generic module functions
include { initOptions; saveFiles; getSoftwareName } from './functions'

params.options = [:]
def options    = initOptions(params.options)

process SORTMERNA {
    tag "$meta.id"
    label "process_high"
    publishDir "${params.outdir}",
        mode: params.publish_dir_mode,
        saveAs: { filename -> saveFiles(filename:filename, options:params.options, publish_dir:getSoftwareName(task.process), publish_id:meta.id) }

    conda     (params.enable_conda ? "bioconda::sortmerna=4.2.0" : null)
    container "quay.io/biocontainers/sortmerna:4.2.0--0"

    input:
    tuple val(meta), path(reads)
    path  fasta
    
    output:
    tuple val(meta), path("*.fastq.gz"), emit: reads
    tuple val(meta), path("*.log")     , emit: log
    path  "*.version.txt"              , emit: version

    script:
    def software = getSoftwareName(task.process)
    def prefix   = options.suffix ? "${meta.id}${options.suffix}" : "${meta.id}"

    def Refs = ""
    for (i=0; i<fasta.size(); i++) { Refs+= " --ref ${fasta[i]}" }
    if (meta.single_end) {
        """
        sortmerna \\
            $Refs \\
            --reads $reads \\
            --threads $task.cpus \\
            --workdir . \\
            --aligned rRNA_reads \\
            --other non_rRNA_reads \\
            $options.args

        gzip -f < non_rRNA_reads.fq > ${prefix}.fastq.gz
        mv rRNA_reads.log ${prefix}.sortmerna.log

        echo \$(sortmerna --version 2>&1) | sed 's/^.*SortMeRNA version //; s/ Build Date.*\$//' > ${software}.version.txt
        """
    } else {
        """
        sortmerna \\
            $Refs \\
            --reads ${reads[0]} \\
            --reads ${reads[1]} \\
            --threads $task.cpus \\
            --workdir . \\
            --aligned rRNA_reads \\
            --other non_rRNA_reads \\
            --paired_in \\
            --out2 \\
            $options.args

        gzip -f < non_rRNA_reads_fwd.fq > ${prefix}_1.fastq.gz
        gzip -f < non_rRNA_reads_rev.fq > ${prefix}_2.fastq.gz
        mv rRNA_reads.log ${prefix}.sortmerna.log

        echo \$(sortmerna --version 2>&1) | sed 's/^.*SortMeRNA version //; s/ Build Date.*\$//' > ${software}.version.txt
        """
    }
}
