<tool id="bamSplit" name="Split" version="0.0.1" force_history_refresh="True">
  <description>BAM datasets on variety of attributes</description>
  <requirements>
    <requirement type="package" version="2.3.0_2d7685d2ae">bamtools</requirement>
  </requirements>
  <command>

    echo "BAM" > $report &amp;&amp;
    
    #for $bam_count, $input_bam in enumerate( $input_bams ):
        ln -s "${input_bam.input_bam}" "localbam_${bam_count}.bam" &amp;&amp;
        ln -s "${input_bam.input_bam.metadata.bam_index}" "localbam_${bam_count}.bam.bai" &amp;&amp;
    #end for
    
    bamtools
    split
  
    #if str ( $analysis_type.analysis_type_selector ) == "-tag" :
    
    ${analysis_type.analysis_type_selector} "${analysis_type.tag_name}"

    #else
    
    ${analysis_type.analysis_type_selector}
    
    #end if
    
    -stub split_bam
    
    #for $bam_count, $input_bam in enumerate( $input_bams ):
        -in "localbam_${bam_count}.bam"
    #end for
    
  </command>

  <inputs>
    <repeat name="input_bams" title="BAM dataset(s) to filter" min="1">
      <param name="input_bam" type="data" format="bam" label="BAM dataset" />
    </repeat>
    <conditional name="analysis_type">
      <param name="analysis_type_selector" type="select" label="Split BAM dataset(s) by" help="See help below for explanation of each option">
        <option value="-mapped">Mapping status (-mapped)</option>
        <option value="-paired">Pairing status (-paired)</option>
        <option value="-reference">Reference name (-reference)</option>
        <option value="-tag">Specific tag (-tag)</option>
      </param>
      <when value="-tag">
        <param name="tag_name" type="text" value="NM" label="Enter tag name here" help="For example, to split on NM tag enter &quot;NM&quot;"/>
      </when>
    </conditional>
  </inputs>
  
  <outputs>
    <data format="txt" name="report" label="BAMSplitter Run" hidden="true">
      <discover_datasets pattern="split_bam\.(?P&lt;designation&gt;.+)\.bam" ext="bam" visible="true"/>
    </data>
  </outputs>
    <tests>
        <test>
            <param name="input_bam" ftype="bam" value="bamtools-input1.bam"/>
            <param name="analysis_type_selector" value="-mapped"/>
            <output name="report">
              <assert_contents>
                <has_line line="BAM" />
              </assert_contents>
              <discovered_dataset designation="MAPPED" file="bamtools-split-test1.bam" ftype="bam"/>
            </output>
            
        </test>
    </tests>
<help>
**What is does**

BAMTools split is a utility for splitting BAM files. It is based on BAMtools suite of tools by Derek Barnett (https://github.com/pezmaster31/bamtools).

-----

.. class:: warningmark

**DANGER: Multiple Outputs**

As described below, splitting a BAM dataset(s) on reference name or a tag value can produce very large numbers of outputs. Read below and know what you are doing.

-----

**How it works**

The following options can be specified via "**Split BAM dataset(s) by**" dropdown::
 
  Mapping status (-mapped)          split mapped/unmapped and generate two output files
                                    named (MAPPED) and (UNMAPPED) containing mapped and unmapped
                                    reads, respectively.
                                    
  Pairing status (-paired)          split single-end/paired-end alignments and generate two output files
                                    named (SINGLE_END) and (PAIRED_END) containing paired and unpaired
                                    reads, respectively.
                                    
  Reference name (-reference)       split alignments by reference name. In cases of unfinished genomes with
                                    very large number of reference sequences (scaffolds) it can generate
                                    thousands (if not millions) of output datasets.
                                    
  Specific tag (-tag)               split alignments based on all values of TAG encountered. Choosing this
                                    option from the menu will allow you to enter the tag name. As was the
                                    case with the reference splitting above, this option can produce very
                                    large number of outputs if a tag has a large number of unique values.

-----

.. class:: infomark

**More information**

Additional information about BAMtools can be found at https://github.com/pezmaster31/bamtools/wiki

</help>
</tool>