test: filter structured markdown

script

// https://forums.getdrafts.com/t/filter-structured-markdown/8609

var p = Prompt.create();

p.title = "Filter";
p.message = "Filter Structured Markdown!";

p.addTextField("search_term", "Filter for", "");

p.addButton("Filter");

var didSelect = p.show();

var search_term = p.fieldValues["search_term"]

var active_block = false
const student_layer = '###'
const flip = true

var xlines = '# Assignment 1\n\n## Draft 1\n\n### Billy\n\ngreat paper\n\n### Johnny \n\nbad paper\n## Draft 2\n\n### Billy\n\nbad paper\n\n### Johnny \n\ngood paper\n'


var line = ""

var filtered_lines =''
var prefix = ''
var array_lines = xlines.split(/\n/)

if(flip)
{
   filtered_lines = '# '+search_term+ '\n'
   prefix = '#'
}

var parser_info = ''
var show= false
for( var i=0 ; i < array_lines.length; i +=1 )
{
   line = array_lines[i].trim()
   if( line.length == 0 )
   { 
      continue;
   }
   if ( line[0] == '#' )
   {
      if(line.search(student_layer)==0)
      {
         if( line.search(search_term) > 0 )
         {
           active_block = true
           show = true
           if(!flip)
           { 
             filtered_lines += line + '\n'
           }
         }
         else
         {
           active_block = false
           show = false
         }
      }
      else 
      {
         show = true
         filtered_lines += prefix+line+ '\n'
      }
   }
   else
   {
      if(active_block)
      {
         show = true
         filtered_lines += line+ '\n'
      }
      else
      {
         show = false
      }
   }
   parser_info += 'line '+i+ ', '+line+', show='+show+', active_block='+active_block+'\n'
   
}

let d = new Draft();
d.content = filtered_lines
d.addTag(search_term);
d.addTag("filtered");
d.update();

alert(parser_info)