exec    = require('child_process').exec
{Plugin} = require '../plugin'

module.exports = class Plugin_Disk_Space extends Plugin
	collect: ->
		df = exec 'df -P -l', (err, stdout, stderr) =>
			[head, mounts...] = stdout.split "\n"
			for line in mounts
				continue if not line
				[fs, total, used, avail, junk, mount] = line.match(/[^\s]+/g)
				fs = fs.replace(/[^a-z0-9\-_]/ig, '_')
				mount = mount.replace(/[^a-z0-9\-_]/ig, '_')

				@submit(
					['gauge', 'device.' + fs + '.total', total],
					['gauge', 'device.' + fs + '.used', used],
					['gauge', 'mount.' + mount + '.total', total],
					['gauge', 'mount.' + mount + '.used', used],
				)