Class: Gcal::Service

Inherits:
Object
  • Object
show all
Defined in:
lib/utilities/gcal/service.rb

Constant Summary collapse

SCOPES = 
[
  "https://www.googleapis.com/auth/calendar.readonly",
  "https://www.googleapis.com/auth/drive.readonly"
]
SCOPE = 
SCOPES.join(" ")

Instance Method Summary collapse

Constructor Details

#initialize(skip_auth: false) ⇒ Service

Returns a new instance of Service.



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# File 'lib/utilities/gcal/service.rb', line 21

def initialize(skip_auth: false)
  ensure_env!
  @service = Google::Apis::CalendarV3::CalendarService.new
  @service.authorization = authorize unless skip_auth
end

Instance Method Details

#authenticate ⇒ Object 



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# File 'lib/utilities/gcal/service.rb', line 140

def authenticate
  perform_auth_flow
  {success: true}
rescue => e
  {success: false, error: e.message}
end

#list_calendars ⇒ Object 



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# File 'lib/utilities/gcal/service.rb', line 65

def list_calendars
  results = @service.list_calendar_lists

  calendars = results.items.map do |calendar|
    {
      id: calendar.id,
      summary: calendar.summary,
      description: calendar.description,
      time_zone: calendar.time_zone,
      access_role: calendar.access_role,
      primary: calendar.primary
    }
  end

  {calendars: calendars, count: calendars.length}
rescue Google::Apis::Error => e
  raise "Google Calendar API Error: #{e.message}"
rescue => e
  log_error("list_calendars", e)
  raise e
end

#list_events(start_date: nil, end_date: nil, max_results: 20, calendar_id: "primary") ⇒ Object 



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# File 'lib/utilities/gcal/service.rb', line 27

def list_events(start_date: nil, end_date: nil, max_results: 20, calendar_id: "primary")
  # Default to today if no start date provided
  now = Time.now
  start_time = start_date ? Time.parse("#{start_date} 00:00:00") : Time.new(now.year, now.month, now.day, 0, 0, 0)
  # Default to 7 days from start if no end date provided
  end_time = end_date ? Time.parse("#{end_date} 23:59:59") : start_time + 7 * 24 * 60 * 60

  results = @service.list_events(
    calendar_id,
    max_results: max_results,
    single_events: true,
    order_by: "startTime",
    time_min: start_time.utc.iso8601,
    time_max: end_time.utc.iso8601
  )

  events = results.items.map do |event|
    {
      id: event.id,
      summary: event.summary,
      description: event.description,
      location: event.location,
      start: format_event_time(event.start),
      end: format_event_time(event.end),
      attendees: format_attendees(event.attendees),
      html_link: event.html_link,
      calendar_id: calendar_id
    }
  end

  {events: events, count: events.length}
rescue Google::Apis::Error => e
  raise "Google Calendar API Error: #{e.message}"
rescue => e
  log_error("list_events", e)
  raise e
end

#perform_auth_flow ⇒ Object 



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# File 'lib/utilities/gcal/service.rb', line 147

def perform_auth_flow
  client_id = Mcpeasy::Config.google_client_id
  client_secret = Mcpeasy::Config.google_client_secret

  unless client_id && client_secret
    raise "Google credentials not found. Please save your credentials.json file using: mcpz config set_google_credentials <path_to_credentials.json>"
  end

  # Create credentials using OAuth2 flow with localhost redirect
  redirect_uri = "http://localhost:8080"
  client = Signet::OAuth2::Client.new(
    client_id: client_id,
    client_secret: client_secret,
    scope: SCOPE,
    redirect_uri: redirect_uri,
    authorization_uri: "https://accounts.google.com/o/oauth2/auth",
    token_credential_uri: "https://oauth2.googleapis.com/token"
  )

  # Generate authorization URL
  url = client.authorization_uri.to_s

  puts "DEBUG: Client ID: #{client_id[0..20]}..."
  puts "DEBUG: Scope: #{SCOPE}"
  puts "DEBUG: Redirect URI: #{redirect_uri}"
  puts

  # Start callback server to capture OAuth code
  puts "Starting temporary web server to capture OAuth callback..."
  puts "Opening authorization URL in your default browser..."
  puts url
  puts

  # Automatically open URL in default browser on macOS/Unix
  if system("which open > /dev/null 2>&1")
    system("open", url)
  else
    puts "Could not automatically open browser. Please copy the URL above manually."
  end
  puts
  puts "Waiting for OAuth callback... (will timeout in 60 seconds)"

  # Wait for the authorization code with timeout
  code = GoogleAuthServer.capture_auth_code

  unless code
    raise "Failed to receive authorization code. Please try again."
  end

  puts "✅ Authorization code received!"
  client.code = code
  client.fetch_access_token!

  # Save credentials to config
  credentials_data = {
    client_id: client.client_id,
    client_secret: client.client_secret,
    scope: client.scope,
    refresh_token: client.refresh_token,
    access_token: client.access_token,
    expires_at: client.expires_at
  }

  Mcpeasy::Config.save_google_token(credentials_data)
  puts "✅ Authentication successful! Token saved to config"

  client
rescue => e
  log_error("perform_auth_flow", e)
  raise "Authentication flow failed: #{e.message}"
end

#search_events(query, start_date: nil, end_date: nil, max_results: 10) ⇒ Object 



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# File 'lib/utilities/gcal/service.rb', line 87

def search_events(query, start_date: nil, end_date: nil, max_results: 10)
  # Default to today if no start date provided
  now = Time.now
  start_time = start_date ? Time.parse("#{start_date} 00:00:00") : Time.new(now.year, now.month, now.day, 0, 0, 0)
  # Default to 30 days from start if no end date provided
  end_time = end_date ? Time.parse("#{end_date} 23:59:59") : start_time + 30 * 24 * 60 * 60

  results = @service.list_events(
    "primary",
    q: query,
    max_results: max_results,
    single_events: true,
    order_by: "startTime",
    time_min: start_time.utc.iso8601,
    time_max: end_time.utc.iso8601
  )

  events = results.items.map do |event|
    {
      id: event.id,
      summary: event.summary,
      description: event.description,
      location: event.location,
      start: format_event_time(event.start),
      end: format_event_time(event.end),
      attendees: format_attendees(event.attendees),
      html_link: event.html_link,
      calendar_id: "primary"
    }
  end

  {events: events, count: events.length}
rescue Google::Apis::Error => e
  raise "Google Calendar API Error: #{e.message}"
rescue => e
  log_error("search_events", e)
  raise e
end

#test_connection ⇒ Object 



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# File 'lib/utilities/gcal/service.rb', line 126

def test_connection
  calendar = @service.get_calendar("primary")
  {
    ok: true,
    user: calendar.summary,
    email: calendar.id
  }
rescue Google::Apis::Error => e
  raise "Google Calendar API Error: #{e.message}"
rescue => e
  log_error("test_connection", e)
  raise e
end