Group Foursquare bookmarks into lists by city

Gemfile

source "https://rubygems.org"

gem "rest-client"
gem "awesome_print"

main.rb

#!/usr/bin/env ruby

require "rest-client"
require "json"
require "awesome_print"

TOKEN = "<OAUTH TOKEN>"

BASE_URL = "https://api.foursquare.com/v2"

PAGE_SIZE = 200

BASE_PARAMS = {
  oauth_token: TOKEN,
  v: "20161112",
  m: "foursquare"
}

def main
  lists = get_all_created_lists("self")

  todos_list = get_list("self/todos", limit: 1)
  todos_list_id = todos_list["response"]["list"]["id"]

  items = get_all_items_in_list("self/todos")

  items.each do |item|
    venue = item["venue"]
    unless venue
      puts "Skipping item due to missing venue"
      next
    end

    city = get_city_name(item)
    unless city
      puts "Skipping item due to missing city"
      next
    end

    list = lists.find {|l| l["name"] == city}
    if list == nil
      list = add_list(city)["response"]["list"]
      lists << list
    end

    begin
      add_item(list["id"], venue["id"])
      delete_item("self/todos", venue["id"])
    rescue => e
      ap e.response.headers
      error = JSON.parse(e.response.body)
      ap error
      exit(false) unless error["meta"]["errorDetail"].end_with?("already on this list")
    end
  end
end

def get_city_name(item)
  venue = item["venue"]
  location = venue["location"] if venue
  city = location["city"] if location

  city == "" ? nil : city
end

def get_all_created_lists(user_id)
  items = []

  loop do
    lists = get_lists(user_id, group: 'created', offset: items.count, limit: PAGE_SIZE)
    total_count = lists["response"]["lists"]["count"]
    items += lists["response"]["lists"]["items"]

    return items if items.count == total_count
  end
end

def get_all_items_in_list(list_id)
  items = []

  loop do
    list = get_list(list_id, offset: items.count, limit: PAGE_SIZE)
    total_count = list["response"]["list"]["listItems"]["count"]
    items += list["response"]["list"]["listItems"]["items"]

    return items if items.count == total_count
  end
end

def get_lists(user_id, params = {})
  puts "Getting lists (offset #{params[:offset]})..."
  get_json("/users/#{user_id}/lists", params)
end

def get_list(list_id, params = {})
  puts "Getting list items (offset #{params[:offset]})..."
  get_json("/lists/#{list_id}", params)
end

def add_list(list_name)
  puts "Creating list #{list_name}"
  post_json("/lists/add", name: list_name)
end

def add_item(list_id, venue_id)
  puts "Adding venue #{venue_id} to list #{list_id}"
  post_json("/lists/#{list_id}/additem", venueId: venue_id)
end

def delete_item(list_id, venue_id)
  puts "Deleting venue #{venue_id} from list #{list_id}"
  post_json("/lists/#{list_id}/deleteitem", venueId: venue_id)
end

def get_json(path, params = {})
  params = BASE_PARAMS.merge(params)
  response = RestClient.get(BASE_URL + path, params: params)
  JSON.parse(response.body)
end

def post_json(path, params = {})
  params = BASE_PARAMS.merge(params)
  response = RestClient.post(BASE_URL + path, params)
  JSON.parse(response.body)
end

main