require "shellwords"
require "xcodeproj"

default_platform(:ios)

APP_IDENTIFIER = "net.buzzert.attractor"
SCHEME = "Attractor"
TARGET_NAME = "App"
TEAM_ID = ENV["FASTLANE_TEAM_ID"].to_s.strip.empty? ? "3SJALV9BQ7" : ENV["FASTLANE_TEAM_ID"]
PROFILE_NAME = ENV["ATTRACTOR_PROVISIONING_PROFILE_SPECIFIER"].to_s.strip.empty? ? "Attractor AppStore CI" : ENV["ATTRACTOR_PROVISIONING_PROFILE_SPECIFIER"]
CI_KEYCHAIN_NAME = "attractor_ci_keychain"
CI_KEYCHAIN_PASSWORD = "attractor-ci-keychain-password"
CI_KEYCHAIN_DB_PATH = File.expand_path("~/Library/Keychains/#{CI_KEYCHAIN_NAME}-db")
PROJECT_FILE = File.expand_path("../SBrowser.xcodeproj", __dir__)

def present?(value)
  !value.to_s.strip.empty?
end

def ci?
  present?(ENV["CI"])
end

def version_from_tag(tag)
  patterns = [
    %r{\Arelease/ios/v(\d+(?:\.\d+){1,2})\z},
    %r{\AAttractor-(\d+(?:\.\d+){1,2})\z},
    %r{\Av(\d+(?:\.\d+){1,2})\z}
  ]

  patterns.each do |pattern|
    match = tag.to_s.match(pattern)
    return match[1] if match
  end

  nil
end

def release_version
  candidates = [
    ENV["ATTRACTOR_VERSION_TAG"],
    ENV["GITHUB_REF_NAME"],
    ENV["GITHUB_REF"].to_s.sub(%r{\Arefs/tags/}, "")
  ]

  candidates.each do |tag|
    version = version_from_tag(tag)
    return version if version
  end

  latest_tag = sh("git describe --tags --abbrev=0").strip
  version = version_from_tag(latest_tag)
  return version if version

  candidates << latest_tag
  UI.user_error!("Release tag must look like release/ios/v4.1, Attractor-4.1, or v4.1; got #{candidates.compact.inspect}")
end

# App Store Connect requires CFBundleVersion to be unique and strictly
# increasing app-wide. Attractor already has historical builds, so use a UTC
# timestamp by default instead of assuming a fresh CI run number is high enough.
def build_number
  value = ENV["ATTRACTOR_BUILD_NUMBER"]
  value = Time.now.utc.strftime("%Y%m%d%H%M%S") unless present?(value)

  unless value.to_s.match?(/\A\d+\z/)
    UI.user_error!("Build number must be numeric; got #{value.inspect}")
  end

  value.to_s
end

def stamp_project_versions(version:, build:)
  project = Xcodeproj::Project.open(PROJECT_FILE)
  target = project.targets.find { |candidate| candidate.name == TARGET_NAME }
  UI.user_error!("Could not find target #{TARGET_NAME.inspect} in #{PROJECT_FILE}") unless target

  target.build_configurations.each do |configuration|
    configuration.build_settings["MARKETING_VERSION"] = version
    configuration.build_settings["CURRENT_PROJECT_VERSION"] = build
  end

  project.save
end

platform :ios do
  private_lane :app_store_api_key do
    app_store_connect_api_key(
      key_id: ENV.fetch("APP_STORE_CONNECT_KEY_ID"),
      issuer_id: ENV.fetch("APP_STORE_CONNECT_ISSUER_ID"),
      key_content: ENV.fetch("APP_STORE_CONNECT_KEY_CONTENT"),
      is_key_content_base64: true
    )
  end

  private_lane :prepare_ci_keychain do
    next unless ci?

    delete_keychain(name: CI_KEYCHAIN_NAME) if File.file?(CI_KEYCHAIN_DB_PATH)
    create_keychain(
      name: CI_KEYCHAIN_NAME,
      password: CI_KEYCHAIN_PASSWORD,
      unlock: true,
      timeout: 3600,
      add_to_search_list: true
    )

    ENV["MATCH_KEYCHAIN_NAME"] = CI_KEYCHAIN_NAME
    ENV["MATCH_KEYCHAIN_PASSWORD"] = CI_KEYCHAIN_PASSWORD
  end

  private_lane :sync_signing do |options|
    match(
      type: "appstore",
      readonly: options.fetch(:readonly),
      app_identifier: APP_IDENTIFIER,
      team_id: TEAM_ID,
      profile_name: PROFILE_NAME,
      git_url: ENV.fetch("MATCH_GIT_URL"),
      git_branch: ENV.fetch("MATCH_GIT_BRANCH", "master"),
      git_full_name: "Attractor Release Bot",
      git_user_email: "james.magahern@me.com",
      api_key: options.fetch(:api_key)
    )
  end

  desc "Create or update match signing assets"
  lane :setup_signing do
    sync_signing(api_key: app_store_api_key, readonly: false)
  end

  desc "Build and upload to TestFlight"
  lane :beta do
    prepare_ci_keychain

    api_key = app_store_api_key
    version = release_version
    build = build_number

    stamp_project_versions(version: version, build: build)

    sync_signing(api_key: api_key, readonly: true)

    build_app(
      project: PROJECT_FILE,
      scheme: SCHEME,
      destination: "generic/platform=iOS",
      export_method: "app-store",
      codesigning_identity: "Apple Distribution",
      xcargs: [
        "DEVELOPMENT_TEAM=#{TEAM_ID.shellescape}",
        "CODE_SIGN_STYLE=Manual",
        "CODE_SIGN_IDENTITY=Apple\\ Distribution",
        "PROVISIONING_PROFILE_SPECIFIER=#{PROFILE_NAME.shellescape}"
      ].join(" "),
      export_options: {
        signingStyle: "manual",
        teamID: TEAM_ID,
        provisioningProfiles: {
          APP_IDENTIFIER => PROFILE_NAME
        }
      }
    )

    upload_to_testflight(
      api_key: api_key,
      skip_waiting_for_build_processing: true
    )
  end
end