module Usagewatch

# File lib/usagewatch_ext/mac.rb, line 113
def self.uw_bandrx
  read1 =`netstat -ib | grep -e "en1" -m 1 | awk '{print $7}'`
  sleep 1
  read2=`netstat -ib | grep -e "en1" -m 1 | awk '{print $7}'`
  (((read2.to_f - read1.to_f)/1024)/1024).round(3)
end

# File lib/usagewatch_ext/mac.rb, line 120
def self.uw_bandtx
  send1=`netstat -ib | grep -e "en1" -m 1 | awk '{print $10}'`
  sleep 1
  send2=`netstat -ib | grep -e "en1" -m 1 | awk '{print $10}'`
  (((send2.to_f - send1.to_f)/1024)/1024).round(3)
end

# File lib/usagewatch_ext/mac.rb, line 75
def self.uw_cputop
  top %w"$11 $3"
end

# File lib/usagewatch_ext/mac.rb, line 67
def self.uw_cpuused
  top = `top -l1 | awk '/CPU usage/'`
  top = top.gsub(/[\,a-zA-Z:]/, "").split(" ")
  top[0].to_f
end

# File lib/usagewatch_ext/mac.rb, line 30
def self.uw_diskavailable
  df = `df`
  parts = df.split(" ").map { |s| s.to_i }
  sum = 0
  for i in (9..parts.size - 1).step(6) do
    sum += parts[i+1]
  end
  round = sum.round(2)
  totaldiskavailable = ((round/1024)/1024).round(2)
end

# File lib/usagewatch_ext/mac.rb, line 42
def self.uw_diskavailable_on(location)
  df = `df`
  df.split("\n")[1..-1].each do |line|
    parts = line.split(" ")
    if parts.last == location
      diskavailableon = ((parts[3].to_i.round(2)/1024)/1024).round(2)
      break
    end
  end
  diskavailableon ? diskavailableon : "location invalid"
end

# File lib/usagewatch_ext/mac.rb, line 4
def self.uw_diskused
  df = `df -kl`
  sum = 0.00
  df.each_line.with_index do |line, line_index|
    next if line_index.eql? 0
    line = line.split(" ")
    next if line[0] =~ /localhost/  #ignore backup filesystem
    sum += ((line[2].to_f)/1024)/1024
  end
  sum.round(2)
end

# File lib/usagewatch_ext/mac.rb, line 17
def self.uw_diskused_on(location)
  df = `df`
  df.split("\n")[1..-1].each do |line|
    parts = line.split(" ")
    if parts.last == location
      diskusedon = ((parts[2].to_i.round(2)/1024)/1024).round(2)
      break
    end
  end
  diskusedon ? diskusedon : "location invalid"
end

# File lib/usagewatch_ext/mac.rb, line 55
def self.uw_diskused_perc
  df, total, used  = `df -kl`, 0.0, 0.0
  df.each_line.with_index do |line, line_index|
    line = line.split(" ")
    next if line_index.eql? 0 or line[0] =~ /localhost/ #ignore backup filesystem
    total  += to_gb line[3].to_f
    used   += to_gb line[2].to_f
  end
  ((used/total) * 100).round(2)
end

# File lib/usagewatch_ext/linux.rb, line 3
def self.uw_httpconns
  `netstat -an | grep :80 |wc -l`.to_i
end

# File lib/usagewatch_ext/mac.rb, line 103
def self.uw_load
  iostat = `iostat -w1 -c 2 | awk '{print $7}'`
  cpu = 0.0
  iostat.each_line.with_index do |line, line_index|
    next if line_index.eql? 0 or  line_index.eql? 1 or  line_index.eql? 2
    cpu = line.split(" ").last.to_f.round(2)
  end
  cpu
end

# File lib/usagewatch_ext/mac.rb, line 91
def self.uw_memtop
  top %w"$11 $4"
end

# File lib/usagewatch_ext/mac.rb, line 96
def self.uw_memused
  top = `top -l1 | awk '/PhysMem/'`
  top = top.gsub(/[\.\,a-zA-Z:]/, "").split(" ").reverse
  ((top[1].to_f / (top[0].to_f + top[1].to_f)) * 100).round(2)
end

# File lib/usagewatch_ext/mac.rb, line 155
def self.to_gb(bytes)
  (bytes/1024)/1024
end

# File lib/usagewatch_ext/mac.rb, line 145
def self.top(lines)
  ps = `ps aux | awk '{print #{lines.join(", ")}}' | sort -k2nr  | head -n 10`
  array = []
  ps.each_line do |line|
    line = line.chomp.split(" ")
    array << [line.first.gsub(/[\[\]]/, "").split("/").last, line.last]
  end
  array
end