Remove all GitLab deploy keys like a boss

remove_deploy_keys.rb

require 'net/http'
require 'json'

HOST = 'enter_your_own_domain_here'

def login username, password
  uri = URI("http://#{HOST}/api/v3/session?login=#{username}&password=#{password}")
  # Create client
  http = Net::HTTP.new(uri.host, uri.port)
  # Create Request
  req =  Net::HTTP::Post.new(uri)
  # Fetch Request
  res = http.request(req)
  JSON.parse(res.body)['private_token']
rescue StandardError => e
  puts "HTTP Request failed (#{e.message})"
end

def list_projects private_token
  uri = URI("http://#{HOST}/api/v3/projects/all")
  # Create client
  http = Net::HTTP.new(uri.host, uri.port)
  # Create Request
  req =  Net::HTTP::Get.new(uri)
  # Add headers
  req.add_field "private-token", private_token
  # Fetch Request
  res = http.request(req)
  JSON.parse(res.body)
rescue StandardError => e
  puts "HTTP Request failed (#{e.message})"
end

def list_project_deploy_keys private_token, project_id
  uri = URI("http://#{HOST}/api/v3/projects/#{project_id.to_s}/deploy_keys")
  # Create client
  http = Net::HTTP.new(uri.host, uri.port)
  # Create Request
  req =  Net::HTTP::Get.new(uri)
  # Add headers
  req.add_field "private-token", private_token
  # Fetch Request
  res = http.request(req)
  JSON.parse(res.body)
rescue StandardError => e
  puts "HTTP Request failed (#{e.message})"
end

def delete_project_deploy_key private_token, project_id, key_id
  uri = URI("http://#{HOST}/api/v3/projects/#{project_id.to_s}/deploy_keys/#{key_id.to_s}")
  # Create client
  http = Net::HTTP.new(uri.host, uri.port)
  # Create Request
  req =  Net::HTTP::Delete.new(uri)
  # Add headers
  req.add_field "private-token", private_token
  # Fetch Request
  res = http.request(req)
  JSON.parse(res.body)
rescue StandardError => e
  puts "HTTP Request failed (#{e.message})"
end

def reduce_kp keypairs, key
  !(keypairs.map { |kp| kp[0] }.include?key)
end

keypairs = []

token = login('zhouyifei', '3Za-msG-2xC-dWu')
list_projects(token).each do |project|
  id = project['id']
  list_project_deploy_keys(token, id).each do |key|
    keypairs << [key['id'], id] if reduce_kp(keypairs, key['id'])
  end
end

keypairs.each do |kp| 
  key = kp[0]
  rid = kp[1]
  p delete_project_deploy_key(token, rid, key)
end