"""
Sum and print masses for a packing list.
"""

import math

INDENTATION=3

# units are grams
# masses >= 100g via food scale
# masses < 100g via hand-held postal scale
# 1 lb = 453.59237g (at 1G)
GRAMS_PER_POUND = 453.59237
# 1 lb = 16 oz
OUNCES_PER_POUND = 16
GRAMS_PER_KILOGRAM = 1000
MASSES = {
	'Pack' : {
		'REI Ridgeline 65': 1920,
		'Pack Cover (UltraSil)' : 92,
	},
	'Water' : {
		'1L Bottle (Nalgene, empty)' : 180,
		'3L Reservoir' : {
			'Platypus Hose' : 65,
			'Platypus Reservoir' : 90,
		},
		'1L Water (bottle)' : 1000,
		#'3L Water (reservoir)' : 3000,
		'2L Water (reservoir)' : 2000,
		'SteriPen Classic' : {
			'Body + cap' : 90,
			'4xAA (Li Energizer)' : 55,
			'Pouch' : 35,
		}
	},
	'Food' : {
		'Dehydrated Dinners' : {
			'BP Beans & Chile for 2' : 210,
			'BP Beans & Rice for 2' : 180,
			'MH Beef Stew for 1' : 140,
			'MH Pasta Primavera for 1' : 145,
		},
		'6x Bagels' : 665,
		'Peanut butter + container' : 215 + 23,
		'6x Granola bars' : 48*6,
		'Turkey jerkey' : 135,
		'Trail mix (8oz bag)' : 320,
		'Trail mix (partial 16oz bag)' : 535,
		'Pepper mangoes' : 180,
		'Dehydrated Tomatoes' : (55 + 35 + 20 + 27 + 42),
		'Salt' : {
			'Film Cannister' : 5.5,
			'Salt' : 29,
		},
		'4xTeabags + baggie' : 14.5,
		'Food stuff sack (20L StS)' : 130,
		'2x Plastic containers' : 26 + 35,
	},
	'Storage & Shelter' : {
		'Sleeping pad' : {
			'Thermarest NeoAir (regular)' : 415,
			'Thermarest stuff sack' : 15,
			'2xPatches' : .2,
		},
		'Sleeping Bag' : {
			'Stuff sack' : 64,
			'Bag' : 1515,
			# storage sack: 120
			# bag + stuff sack: 1575, bag = 1511
			# bag + storage sack: 1640, bag = 1520
		},
		'Tent (Sierra Designs LightYear)' : {
			'Footprint' : {
				'Footprint' : 160,
				'Footprint sack' : 13,
			},
			'Main' : {
				'Enclosure' : 510,
				'Rain fly' : 465,
				'Sack' : 38,
			},
			'Staking' : {
				'Bag' : 8.5,
				'Cords (for rain fly)' : 18,
				'7xStakes' : 73.5,
				# bag + stakes = 82
			},
			'Poles' : {
				'Short pole' : 76,
				'Long pole' : 150,
				'Bag' : 21,
			},
		},
	},
	'Clothing' : {
		# except things being worn
		'Tevas (Terra Fi 3)' : 0, # 818,
		'Pants (REI Sahara)' : 0, # 320,
		'Belt (REI Sahara)' : 0, # 25,
		'Shirt (REI)' : 0, # 335,
		'Underwear' : {
			'ExOfficio boxers' : 0, # 92,
			'ExOfficio boxer briefs' : 74,
			'ExOfficio briefs' : 61,
		},
		'Tee shirt (CG)' : 190,
		'Head Net + bag' : 13,
		'Socks' : {
			'3xSweatsocks' : 3*43,
			'Smartwool (light tan)' : 90,
			'Smartwool (tan and lines)' : 75,
			'Smartwool (black and argyle)' : 75,
			'Smartwool (blue and lines)' : 85,
		},
		'Earbags' : {
			'Pouch' : 2.5,
			'2xEarbags' : 11.5,
		},
		'Kerchief (red/worn)' : 27,
		'Kerchief (blue/new)' : 34,
		'Hat (White Rock)' : 83,
		'Raincoat (eVent)' : 370,
		'Oversocks (homemade)' : 135,
		'Bug spray (Maxi DEET 15ml, full)' : 24,
	},
	'Cooking' : {
		'Fork (GSI Outdoors)' : 12,
		'Spoon (GSI Outdoors)' : 15,
		'Spoon (translucent)' : 9.5,
		'Knife (translucent)' : 17,
		'Penny stove' : 32,
		'Windscreen' : 42,
		'Lighter' : 23,
		#'Fuel cannister' : 92,
		'Fuel bottle (16oz plastic)' : 16,
		'Denatured alcohol (~16oz)' : 414,
		'Collapsible cup (Sea to Summit)' : 71,
		'Pot (MSR Titan Titanium)' : {
			'Pot' : 90,
			'Lid' : 35,
		},
		'Paper napkins' : 2.5,
	},
	'Health & Hygene; Tools' : {
		'Ziploc bag' : 7,
		'Safety pins (med & small)' : 3,
		'2X Paper clips' : 2,
		'Comb' : 8,
		'Toothbrush' : 15,
		'Retainer' : {
			'Box' : 22,
			'Top' : 3.5,
			'Bottom' : 2.5,
		},
		'(Toe)Nail clippers' : 43,
		'Duct tape mini-roll' : 13.5,
		'Moleskin' : 12.5,
		'Cough drop' : 5,
		'Tiger Blalm (mostly full)' : 58,
		'Badger Balm (mostly empty)' : 23,
		'Sunscreen (half)' : 47,
		'Skin ointment (mostly empty) and clip' : 5,
		'24xQ-tips + baggie' : 15,

		'Pen (Micron 005)' : 8.5,
		'Notebook (Moleskine 120p 7.5x10 soft)' : 135,
		'Pocket knife (Swiss Army)' : 65,
		'Flashlight' : {
			'Body' : 120,
			'3xAAA (Alkaline)' : 34,
		},
		'Watch (Timex, half wrist strap)' : 24,
		'Cell phone (Nokia)' : 95,
		'Wallet' : {
			'Might Wallet (Dynomighty Design)' : 12,
			'5xCards' : 22,
			'Bank notes' : 15.5,
			'Other papers' : 4,
		},
		'Metal whistle' : 4.5,
		"Cord (50'?)" : 47,
	},
	'Tech' : {
		'Camera' : {
			'55-200mm + caps' : 370,
			'18-55mm + caps' : 230,
			'35mm f1.8 + caps' : 140,
			'Nikon D40x Body, straps, cap' : 615,
			'Lens pouch (Tamrac)' : 120,
			'Remote' : {
				'Remote' : 11,
				'Pouch' : 1,
			},
			'Mini tripod' : 60,
		},
		'Audio' : {
			'Sony PCM-M10 + wrist strap' : 135,
			'2xAA (Alkaline/Sony)' : 44,
			'Windscreen + bag' : 8.5,
			'Micro SD (16GB)' : .5,
		},
		'GPS' : {
			'Garmin eTrex Legend HCx' : 130,
			'Strap + snap' : 8,
			'Micro SD (4GB)' : .5,
			'2XAA (NiMH Sanyo eneloop)' : 52,
		},
		'Solar Charger' : 95,
		'Data Storage' : {
			'Ziploc bag' : 5.5,
			'USB cable (folded)' : 44,
			'USB cable (coiled)' : 46,
			'500GB HD (Cavalry)' : 165,
			'MicroSD USB adapter' : 2,
			'MicroSD adapter & case' : 5,
			'SD cards/cases (5 and 4)' : 25,
		},
		'Accessories' : {
			'Ziploc bag' : 10,
			'Earbuds (from iPod)' : 12.5,
			'Headphone splitter' : 22,
			'Camera blower' : 39,
			'2x Optical cloth' : 2*5.5,
			'Lens cleaner' : 64,
		},
		'Power & Charging' : {
			'Ziploc bag' : 7,
			'Camera battery (second)' : 55,
			'Cell phone charger' : 50,
			'Camera battery charger' : 170,
			# camera charger: cord: 92 + brick: 78
			'4xAA (NiMH, Sanyo eneloop, packaged)' : 98,
			'2xAA (NiMH, Sanyo eneloop, boxed)' : 67,
		},
	},
}

def printAlignedColumns(rows, padding=INDENTATION):
	if not rows:
		return
	columnWidths = [0,]*len(rows[0])
	for row in rows:
		for i, s in enumerate(row):
			columnWidths[i] = max(columnWidths[i], len(s))
	for row in rows:
		for w, s in zip(columnWidths, row):
			print s,
			print ' '*(w - len(s)),
		print

def formatGramsAsImperial(grams):
	pounds = grams / GRAMS_PER_POUND
	partialPounds, unitPounds = math.modf(pounds)
	ounces = partialPounds * OUNCES_PER_POUND

	text = ''
	if unitPounds > 0:
		text += '%dlb' % unitPounds
	if text:
		text += ' '
	text += '%.1foz' % ounces
	return text

def formatGrams(grams):
	if grams > GRAMS_PER_KILOGRAM/2:
		return '%.1fKg' % (grams/GRAMS_PER_KILOGRAM)
	else:
		return '%dg' % grams

def formatFraction(part, whole):
	f = part/whole
	text = '%2.2f' % f
	for level in (.04, .8, .2):
		if f >= level:
			text += '*'
	return text

def getInfoLines(name, info, indent=0):
	lines = []
	total = 0
	for partName, mass in info.iteritems():
		if isinstance(mass, dict):
			subLines, subTotal = getInfoLines(
				partName, mass, indent=indent+1)
			lines += subLines
			total += subTotal
		else:
			lines.append((indent+1, partName, mass))
			total += mass
	lines.insert(0, (indent, name, total))
	return lines, total

lines, total = getInfoLines('Total', MASSES)

formattedLines = []
indenter = ' '*INDENTATION
for indentAmount, name, mass in lines:
	f = mass/total
	#if f < .01 and indentAmount > 1:
	#	continue
	formattedLines.append((
		indenter*indentAmount + name,
		formatGramsAsImperial(mass),
		formatGrams(mass),
		formatFraction(mass, total),
	))

printAlignedColumns(formattedLines)