require 'spec_helper'
require 'trip_advisor/build'
require 'ostruct'
require 'fileutils'

# Alias out Pod::Spec as an OpenStruct so that we can access its fields
module Pod
  class Spec < OpenStruct
    def initialize
      super
      yield self if block_given?
    end
  end
end

module BuildHelpers
  def project_path
    File.join(root_path, 'project.git')
  end
end

class TestSpecRepo
  attr_reader :path, :name, :repo

  def initialize
    @path = Dir.mktmpdir
    @repo = Rugged::Repository.init_at(@path, :bare)
    make_initial_commit
    @name = File.basename(path)
  end

  def url
    "file://#{path}"
  end

  def user_path
    File.expand_path(File.join("~/.cocoapods/repos", name))
  end

  private
  def make_initial_commit
    oid = repo.write("This is a test Spec Repository.", :blob)
    index = Rugged::Index.new
    index.add(:path => "README.md", :oid => oid, :mode => 0100644)

    options = {}
    options[:tree] = index.write_tree(repo)
    options[:author] = { :email => "testuser@github.com", :name => 'Test Author', :time => Time.now }
    options[:committer] = { :email => "testuser@github.com", :name => 'Test Author', :time => Time.now }
    options[:message] = "Making a commit via Rugged!"
    options[:parents] = []
    options[:update_ref] = 'HEAD'

    Rugged::Commit.create(repo, options)
  end
end

describe TripAdvisor::AdHocBuild do
  include BuildHelpers

  before(:each) do
    # Initialize a new empty repository to add as a remote
    @remote_dir = Dir.mktmpdir
    Rugged::Repository.init_at(@remote_dir, :bare)

    # Sync the fixture project into a temporary path to work with
    @project_dir = Dir.mktmpdir
    repo = Rugged::Repository.clone_at(project_path, @project_dir)
    podfile_path = File.join(@project_dir, 'Project.podspec')
    podfile_contents = File.read(podfile_path)
    podfile_contents.gsub!('$GIT_URL', "file://#{@remote_dir}")
    File.open(podfile_path, 'w') { |f| f << podfile_contents }

    # Configure the project under test
    config = repo.config
    config['user.name'] = 'Project Builder'
    config['user.email'] = 'builder@example.com'

    # Add the empty repository as a remote on the project under test
    repo = Rugged::Repository.new(@project_dir)
    remote = Rugged::Remote.lookup(repo, 'origin')
    remote.url = @remote_dir
    remote.save
  end

  after(:each) do
    FileUtils.remove_entry_secure(@project_dir)
    FileUtils.remove_entry_secure(@remote_dir)
  end

  it "generates build info" do
    build = TripAdvisor::AdHocBuild.new(@project_dir)
    info = build.info
  end

  it "generates a version based on the release version and timestamp" do
    time = Time.at(1381331500)
    Time.stub(:now).and_return(time)
    build = TripAdvisor::AdHocBuild.new(@project_dir)
    build.version.should == "1.0.0-b20131009151140"
  end

  it "generates the correct tag name" do
    time = Time.at(1381331500)
    Time.stub(:now).and_return(time)
    build = TripAdvisor::AdHocBuild.new(@project_dir)
    build.tag_name.should == "builds/v1.0.0-b20131009151140"
  end

  it "has a proper default for remotes" do
    build = TripAdvisor::AdHocBuild.new(@project_dir)
    build.remotes.should == ['origin']
  end

  it "only calls `git remote` once when access remotes" do
    build = TripAdvisor::AdHocBuild.new(@project_dir)
    build.should_receive(:`).with('git remote').once.and_return('origin')
    build.remotes
    build.remotes
  end

  it "has a proper default for pod_repo" do
    build = TripAdvisor::AdHocBuild.new(@project_dir)
    build.pod_repo.should == 'tripadvisor'
  end

  it "has a proper default for version_prefix" do
    build = TripAdvisor::AdHocBuild.new(@project_dir)
    build.version_prefix.should == 'v'
  end

  context 'when building' do
    before(:each) do
      time = Time.at(1381331500)
      Time.stub(:now).and_return(time)
      @spec_repo = TestSpecRepo.new
      system("pod repo add #{@spec_repo.name} #{@spec_repo.url}")
      @build = TripAdvisor::AdHocBuild.new(@project_dir)
      @build.pod_repo = @spec_repo.name
      @build.build!
    end

    after(:each) do
      FileUtils.remove_entry_secure(@spec_repo.path)
      system("pod repo remove #{@spec_repo.name}")
    end

    it "updates the BUILD.json file" do
      build_info = File.join(@project_dir, 'BUILD.json')
      info = Oj.load(File.read(build_info))
      info['version'].should == '1.0.0-b20131009151140'
      info['branch'].should == 'master'
      info['sha1'].should_not be_nil
      info['author'].should == 'Project Builder <builder@example.com>'
      info['date'].should == '2013-10-09T15:11:40Z'
    end

    it "updates the Project.podspec file" do
      podspec_path = File.join(@project_dir, 'Project.podspec')
      spec = eval(File.read(podspec_path), nil, podspec_path)
      spec.version.should == '1.0.0-b20131009151140'
      spec.source[:tag].should == 'builds/v1.0.0-b20131009151140'
    end

    it "pushes the tag to the remote repository" do
      repo = Rugged::Repository.new(@remote_dir)
      ref = Rugged::Reference.lookup(repo, "refs/tags/builds/v1.0.0-b20131009151140")
      ref.should_not be_nil
    end

    it "pushes the podspec to the spec repository" do
      path = File.join(@spec_repo.user_path, 'Project', @build.version, 'Project.podspec')
      File.exists?(path).should be_true
    end
  end
  
  describe TripAdvisor::ReleaseBuild do
    include BuildHelpers
    
    it "generates build info" do
      build = TripAdvisor::ReleaseBuild.new(@project_dir, "1.0.1")
      info = build.info
    end
    
    it "generates a version based on the release version" do
      build = TripAdvisor::ReleaseBuild.new(@project_dir, "1.0.1")
      build.version.should == "1.0.1"
    end

    it "generates the correct tag name" do
      build = TripAdvisor::ReleaseBuild.new(@project_dir, "1.0.1")
      build.tag_name.should == "v1.0.1"
    end
    
    it "has a proper default for remotes" do
      build = TripAdvisor::ReleaseBuild.new(@project_dir, "1.0.1")
      build.remotes.should == ['origin']
    end

    it "only calls `git remote` once when access remotes" do
      build = TripAdvisor::ReleaseBuild.new(@project_dir, "1.0.1")
      build.should_receive(:`).with('git remote').once.and_return('origin')
      build.remotes
      build.remotes
    end

    it "has a proper default for pod_repo" do
      build = TripAdvisor::ReleaseBuild.new(@project_dir, "1.0.1")
      build.pod_repo.should == 'tripadvisor'
    end
    
    it "has a proper default for version_prefix" do
      build = TripAdvisor::ReleaseBuild.new(@project_dir, "1.0.1")
      build.version_prefix.should == 'v'
    end
    
    context 'when building' do
      before(:each) do
        time = Time.at(1381331500)
        Time.stub(:now).and_return(time)
        @spec_repo = TestSpecRepo.new
        system("pod repo add #{@spec_repo.name} #{@spec_repo.url}")
        @build = TripAdvisor::ReleaseBuild.new(@project_dir, "1.0.1")
        @build.pod_repo = @spec_repo.name
        @build.build!
      end
    
      after(:each) do
        FileUtils.remove_entry_secure(@spec_repo.path)
        system("pod repo remove #{@spec_repo.name}")
      end

      it "updates the BUILD.json file" do
        build_info = File.join(@project_dir, 'BUILD.json')
        info = Oj.load(File.read(build_info))
        info['version'].should == '1.0.1'
        info['branch'].should == 'master'
        info['sha1'].should_not be_nil
        info['author'].should == 'Project Builder <builder@example.com>'
        info['date'].should == '2013-10-09T15:11:40Z'
      end

      it "updates the Project.podspec file" do
        podspec_path = File.join(@project_dir, 'Project.podspec')
        spec = eval(File.read(podspec_path), nil, podspec_path)
        spec.version.should == '1.0.1'
        spec.source[:tag].should == 'v1.0.1'
      end

      it "pushes the tag to the remote repository" do
        repo = Rugged::Repository.new(@remote_dir)
        ref = Rugged::Reference.lookup(repo, "refs/tags/v1.0.1")
        ref.should_not be_nil
      end

      it "pushes the podspec to the spec repository" do
        path = File.join(@spec_repo.user_path, 'Project', @build.version, 'Project.podspec')
        File.exists?(path).should be_true
      end
    end
  end
end