Generate `nft_metadata_gen` metadata files. Creates weighted rarity metadata files ready for upload

gen.rb

# create Stargaze Austin POAP NFT
require 'json'

starting_number = 1
# declare all attributes and variations
attributes = [
    "food_and_drink",
    "landmark",
    "activity",
]
food_and_drink = {
    'Crispy fried gulf oysters': 0.05,
    'Buttermilk biscuits':0.05,
    'Cowboy ribeye': 0.1,
    'Tomahawk ribeye': 0.05,
    'Franklin bbq brisket': 0.125,
    'Avocado margarita': 0.02,
    'Real deal holyfield':0.005,
    'Migas at trudys':0.005,
    'Cochinita pibil':0.005,
    'Jalapeño kolaches': 0.005,
    'Josies enchiladas': 0.02,
    'Chicken fried steak': 0.1,
    'Dinosaur ribs':0.1,
    'Pulled pork':0.05,
    'Chili con carne':0.05,
    'Texas chili':0.025,
    'Filet mignon':0.025,
    'Cheeseburger':0.05,
    'Frito pie':0.005,
    'Glazed donuts':0.05,
    'Frozen custard':0.05,
    'Whiskey': 0.01,
    'Uchi': 0.005,
    'Valentinas':0.005,
    'P Terrys':0.005,
    'Round Rock Donuts':0.005,
    'LA BBQ': 0,005,
}

sights = {
'Mount Bonnell':50, 
'The Driskill':50, 
'Congress Ave Bridge': 50, 
'The Ritz Building': 50, 
'South Congress Ave': 50,
'I Love You So Much': 50,
'Circuit of the Americas': 50,
'Treaty Oak': 50,
'Victory Grill':50,
'Barton Springs': 50,
'Green Pastures': 50,
'Laguna Gloria': 50,
'Moonlight towers': 50,
'Royal Arch Masonic Lodge': 50,
'360 Bridge': 50,
'UT Austin Tower': 50,
'Texas State Capital': 50,
'Watermelon Island': 50,
'Snake Island': 50,
'Cathedral of Junk': 50,
'Umlauf Skulptur Garden': 50,
'Harry Ransom Center': 50,
}
activity = {
    'Trading NFTs':50,
    'Watching Marketplace Trades':50,
    'Checking Collection Floor':30,
    'Prepping NFT Collection For Launch':1,
    'Chilling By The Pool':50,
    'Refresh Party Gdoc':100,
    'Stargazing':5,
    'Eating':50,
    'Drinking':50,
    'Conversating':50,
    'Chillin':30,
    'Relaxing':30,
    'Melting':5,
    'Making New Friends':50,
    'Doing bad kid stuff':15,
    'Repping Stargaze Punks':15,
    'Cryptotwitter':40,
    'Discord':40,
    'Telegram':20,
    'Checking crypto':25,
    'Building something cool':10,
    'Bat watching':10,
    'Waiting in line':10,
    'Concert on Red River':10,
    'SXSW':5,
}
image = {
    'ipfs://bafybeidl57fjmtz2gi2yv3y2gjtluvejmzjyynwhurv5usxv6rkhwprouy/1.png':1,
    'ipfs://bafybeidl57fjmtz2gi2yv3y2gjtluvejmzjyynwhurv5usxv6rkhwprouy/2.png':1,
}

# output json per metadata entry
# wrs = -> { food_and_drink.max_by { |_, weight| rand ** (1.0/weight) }.first }
food_wrs = -> { food_and_drink.max_by { |_, weight| rand ** (food_and_drink.values.sum/weight) }.first }
sights_wrs = -> { sights.max_by { |_, weight| rand ** (sights.values.sum/weight) }.first }
activity_wrs = -> { activity.max_by { |_, weight| rand ** (activity.values.sum/weight) }.first }
image_wrs = -> { image.max_by { |_, weight| rand ** (image.values.sum/weight) }.first }
2_000.times.each_with_index{|i| 
    tempH = {
        "name"=>"Stargaze Austin POAP##{i+1}",
        "location"=>"Austin, TX",
        "date"=>"2022-06-09 to 2022-06-10",
        "image"=> image_wrs.call.to_s,
        "attributes" =>[
            {"trait_type"=>"food_and_drink","value"=>food_wrs.call.to_s},
            {"trait_type"=>"landmark","value"=>sights_wrs.call.to_s},
            {"trait_type"=>"activity","value"=>activity_wrs.call.to_s},
        ]   
    }
    # p tempH.to_json
    File.open("metadata/#{i+1}", 'w') do |f|
        f.write(tempH.to_json)
    end
}