Class: Pcrd::Demo::Generator

Inherits:
Object
  • Object
show all
Defined in:
lib/pcrd/demo/generator.rb

Overview

Generates realistic-looking fake data for the demo schema. Uses no external dependencies — all data is synthesized from built-in arrays.

Constant Summary collapse

BATCH_SIZE = 
500
FIRST_NAMES = 
%w[
  James Mary Robert Patricia John Jennifer Michael Linda William Barbara
  David Susan Richard Karen Joseph Lisa Thomas Betty Charles Margaret
  Christopher Sandra Daniel Ashley Paul Emily Mark Donna George Carol
  Steven Ruth Kenneth Sharon Edward Michelle Brian Cynthia Ronald Laura
  Anthony Kimberly Kevin Deborah Jason Rebecca Jeffrey Sharon Gary Helen
].freeze
LAST_NAMES = 
%w[
  Smith Johnson Williams Brown Jones Garcia Miller Davis Wilson Anderson
  Taylor Thomas Hernandez Moore Martin Jackson Thompson White Lopez Lee
  Gonzalez Harris Clark Lewis Robinson Walker Perez Hall Young Allen
  Sanchez Wright King Scott Green Baker Adams Nelson Hill Ramirez Campbell
  Mitchell Roberts Carter Phillips Evans Turner Torres Parker Collins Edwards
].freeze
EMAIL_DOMAINS = 
%w[gmail.com yahoo.com hotmail.com outlook.com icloud.com].freeze
CITIES_STATES = 
[
  ["New York",      "NY"], ["Los Angeles",   "CA"], ["Chicago",       "IL"],
  ["Houston",       "TX"], ["Phoenix",        "AZ"], ["Philadelphia",  "PA"],
  ["San Antonio",   "TX"], ["San Diego",      "CA"], ["Dallas",        "TX"],
  ["San Jose",      "CA"], ["Austin",         "TX"], ["Jacksonville",  "FL"],
  ["Fort Worth",    "TX"], ["Columbus",       "OH"], ["Charlotte",     "NC"],
  ["San Francisco", "CA"], ["Indianapolis",   "IN"], ["Seattle",       "WA"],
  ["Denver",        "CO"], ["Nashville",      "TN"], ["Oklahoma City", "OK"],
  ["El Paso",       "TX"], ["Boston",         "MA"], ["Portland",      "OR"],
  ["Las Vegas",     "NV"], ["Memphis",        "TN"], ["Louisville",    "KY"],
  ["Baltimore",     "MD"], ["Milwaukee",      "WI"], ["Albuquerque",   "NM"],
  ["Tucson",        "AZ"], ["Fresno",         "CA"], ["Sacramento",    "CA"],
  ["Mesa",          "AZ"], ["Kansas City",    "MO"], ["Atlanta",       "GA"],
  ["Omaha",         "NE"], ["Colorado Springs","CO"],["Raleigh",       "NC"],
  ["Long Beach",    "CA"], ["Virginia Beach",  "VA"], ["Minneapolis",  "MN"],
].freeze
STREET_SUFFIXES = 
%w[St Ave Blvd Dr Rd Way Ln Ct Pl Ter Circle].freeze
STREET_NAMES = 
%w[
  Oak Maple Pine Cedar Elm Main Park Lake Hill River View Forest Sunset
  Highland Meadow Ridge Valley Spring Garden Grove Willow Cherry Apple
].freeze
DESCRIPTIONS = 
[
  "Charming property in a desirable neighborhood.",
  "Move-in ready home with modern upgrades throughout.",
  "Spacious floor plan with abundant natural light.",
  "Updated kitchen and baths, hardwood floors.",
  "Corner lot with mature landscaping and privacy.",
  "Open concept living with high-end finishes.",
  "Well-maintained property close to top-rated schools.",
  "Quiet cul-de-sac location, walking distance to parks.",
  "Investor opportunity or perfect primary residence.",
  "Stunning views and outdoor entertaining space.",
  "Classic architecture with contemporary updates.",
  "Energy-efficient with solar panels and smart features.",
].freeze

Instance Method Summary collapse

Constructor Details

#initialize(pool, seed: 42) ⇒ Generator

Returns a new instance of Generator.



66
67
68
69
 
# File 'lib/pcrd/demo/generator.rb', line 66

def initialize(pool, seed: 42)
  @pool = pool
  @rng  = Random.new(seed)
end

Instance Method Details

#generate(listing_count:) ⇒ Object

Generate users, agents, then listings in dependency order. Returns hash with row counts generated for each table.



73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
 
# File 'lib/pcrd/demo/generator.rb', line 73

def generate(listing_count:)
  user_count  = [[(listing_count / 10).ceil, 50].max, 500].min
  agent_count = [[(listing_count / 20).ceil, 10].max, 100].min

  $stdout.puts "  Generating #{user_count} users..."
  user_ids  = insert_users(user_count)

  $stdout.puts "  Generating #{agent_count} agents..."
  agent_ids = insert_agents(agent_count, user_ids: user_ids)

  $stdout.puts "  Generating #{listing_count} listings..."
  insert_listings(listing_count, agent_ids: agent_ids)

  { users: user_count, agents: agent_count, listings: listing_count }
end