laenge.groovy

#!/usr/bin/env groovy

@Grab('org.yaml:snakeyaml:1.17')

import org.yaml.snakeyaml.Yaml

import static groovy.io.FileType.FILES

def dir = new File("_posts");
def files = [];
dir.traverse(type: FILES, maxDepth: 0) { files.add(it) };

def lines = files.collect { 
    return getDurationFor(it)
}

println(sumDuration(lines))

def getDurationFor(File file) {
    def lines = file.readLines()
    def linesWithDuration = lines.findAll({it.contains('podcast_duration: ')})
    def linesWithOnlyDurations = linesWithDuration.collect({
        m -> 
            def (_, duration) = m.split( ': ' )
            return duration.replace("\"", "")
        
    })
   def linesWithSumableNumbers = linesWithOnlyDurations. collect({
        l ->
            tokens = l.split(":")
            if(tokens.length==0) {
                return 0;
            }
            else if(tokens.length ==2) {
                hours = 0
                minutes = Integer.parseInt(tokens[0]);
                seconds = Integer.parseInt(tokens[1]);
                duration = 3600 * hours + 60 * minutes + seconds;
                return duration
            }
            else if(tokens.length == 3) {
                hours = Integer.parseInt(tokens[0])
                minutes = Integer.parseInt(tokens[1]);
                seconds = Integer.parseInt(tokens[2]);
                duration = 3600 * hours + 60 * minutes + seconds;
                return duration
            }
        })
    return linesWithSumableNumbers   
}

def sumDuration(lines) {
    return lines.inject(0, { result, i -> 
            currValue = 0
            if(i!=null) {
                currValue =i    
            }
            return result + currValue
    })
   
}