require 'helix_sync/methods'
require 'sinatra/base'

module HelixSync
  class App < Sinatra::Base
    include HelixSync::Methods

    # Fetch the latest changelist for a Helix Sync project
    #
    # Note: this will likely require the Helix Sync shelf client to exist.
    get '/helix-sync/v1/:project_id/last-change' do |project_id|
      require_p4

      # In case you create a new project, you can still send in a default of 0,
      # just to avoid a 404. The shelf client should still exist though.
      default = params['default'] if params.key?('default')

      change = find_latest_change_for_project(project_id)

      change = default if !change and default

      halt 404 unless change

      {change: change}.to_json
    end

    # Get a pending changelist for the user to use for a project
    get '/helix-sync/v1/:project_id/pending' do |project_id|
      require_p4

      default = params['default'] if params.key?('default')

      change = find_pending_change_for_project(project_id)

      change = default if !change and default

      halt 404 unless change

      {change: change}.to_json
    end

    # Removes the pending changelist for a particular project.
    #
    # The main use case here might be uninstallation.
    delete '/helix-sync/v1/:project_id/pending' do |project_id|
      require_p4

      delete_pending_change_for_project(project_id)

      ''
    end

    # Get a pending changelist for the user to use for a project
    get '/helix-sync/v1/:project_id/preview' do |project_id|
      require_p4

      plan = preview_pending_change(project_id)

      halt 404 unless plan

      plan.to_json
    end

    # Submit a pending changelist for a project
    post '/helix-sync/v1/:project/submit' do |project_id|
      require_p4

      resolve_and_submit_shelf(project_id)

      ''
    end

    # Create/update the client for a Helix Sync project
    post '/helix-sync/v1/:project/clients/device' do |project_id|
      require_p4

      device = params['device']
      root = params['root']

      client_name = create_device_client(project_id, device, root)

      halt 404 unless client_name

      {client: client_name}.to_json
    end

    # There shouldn't be any real changelists on this device client. Or you
    # will get a failure.
    delete '/helix-sync/v1/:project/clients/device/:device' do |project_id, device_id|
      require_p4

      delete_device_client(project_id, device_id)

      ''
    end

    post '/helix-sync/v1/:project/clients/shelf' do |project_id|
      require_p4

      client_name = create_shelf_client(project_id, '/dev/null')

      halt 404 unless client_name

      {client: client_name}.to_json
    end

    # Note: It is up to the user to ensure that no pending changes are used
    # on the client. (See DELETE /helix-sync/v1/:project_id/pending)
    delete '/helix-sync/v1/:project/clients/shelf' do |project_id|
      require_p4

      delete_shelf_client(project_id)

      ''
    end
  end
end