#!/usr/bin/env ruby

app = ARGV.shift || abort("Please provide the APP_NAME as the first argument")
extension_name = "solidus_stripe"

source_migrations = {}
Dir['db/migrate/*.rb'].sort.each do |path|
  basename = File.basename(path, ".rb").sub(/^\d+_/, '')
  source_migrations[basename] = path
end

app_migrations = {}
Dir["#{app}/db/migrate/*.#{extension_name}.rb"].sort.each do |path|
  _timestamp, basename = File.basename(path, ".#{extension_name}.rb").split('_', 2)
  app_migrations[basename] = path
end

migrate_app = -> do
  puts "migrating #{app}..."
  Dir.chdir(app) { system("bin/rails db:migrate RAILS_ENV=test") }
end

base_time = Time.now.utc.to_i
install_migration = ->(basename) do
  path = source_migrations[basename]
  base_time += 1
  puts "installing #{basename}..."
  timestamp = Time.at(base_time).strftime("%F%T").delete('-:') # rubocop:disable Rails/TimeZone
  contents = File.read(path)

  File.write("#{app}/db/migrate/#{timestamp}_#{basename}.#{extension_name}.rb", contents)
end

reinstall_migrations = -> do
  app_migrations.each_value { |path| File.delete(path) }
  Dir["#{app}/db/*{.sqlite3,schema.rb}"].each { File.delete(_1) }
  source_migrations.each_key(&install_migration)
  migrate_app.call
end

exit reinstall_migrations.call if ARGV.shift == "--force"

app_migrations.each_key do |basename|
  source_content = File.read(source_migrations[basename]) if source_migrations[basename]
  app_content = File.read(app_migrations[basename])

  next if source_content == app_content

  reinstall_migrations.call
  exit
end

if (missing_migrations = source_migrations.keys - app_migrations.keys).any?
  missing_migrations.each(&install_migration)
  migrate_app.call
end