import { NativeModules, Platform, processColor } from 'react-native';

type RecurringEventOptions = {
  futureEvents?: boolean,
  instanceStartDate?: string,
}; // iOS

type Calendar = {
  id?: string,
  title?: string,
  sourceId?: string, // iOS
  source?: Source,
  type?: string, // iOS
  color?: string,
  entityType?: string, // iOS
  allowsModifications?: boolean,
  allowedAvailabilities?: string[],
  isPrimary?: boolean, // Android
  name?: string, // Android
  ownerAccount?: string, // Android
  timeZone?: string, // Android
  allowedReminders?: string[], // Android
  allowedAttendeeTypes?: string[], // Android
  isVisible?: boolean, // Android
  isSynced?: boolean, // Android
  accessLevel?: string, // Android
};

type Source = {
  id?: string, // iOS only ??
  type?: string,
  name?: string,
  isLocalAccount?: boolean, // Android
};

type Event = {
  id?: string,
  calendarId?: string,
  title?: string,
  location?: string,
  creationDate?: string, // iOS
  lastModifiedDate?: string, // iOS
  timeZone?: string,
  endTimeZone?: string, // Android
  url?: string, // iOS
  notes?: string,
  alarms?: Alarm[],
  recurrenceRule?: RecurrenceRule,
  startDate?: string,
  endDate?: string,
  originalStartDate?: string, // iOS
  isDetached?: boolean, // iOS
  allDay?: boolean,
  availability?: string, // Availability
  status?: string, // Status
  organizer?: string, // Organizer - iOS
  organizerEmail?: string, // Android
  accessLevel?: string, // Android,
  guestsCanModify?: boolean, // Android,
  guestsCanInviteOthers?: boolean, // Android
  guestsCanSeeGuests?: boolean, // Android
  originalId?: string, // Android
  instanceId?: string, // Android
};

type Reminder = {
  id?: string,
  calendarId?: string,
  title?: string,
  location?: string,
  creationDate?: string,
  lastModifiedDate?: string,
  timeZone?: string,
  url?: string,
  notes?: string,
  alarms?: Alarm[],
  recurrenceRule?: RecurrenceRule,
  startDate?: string,
  dueDate?: string,
  completed?: boolean,
  completionDate?: string,
};

type Attendee = {
  id?: string, // Android
  isCurrentUser?: boolean, // iOS
  name?: string,
  role?: string,
  status?: string,
  type?: string,
  url?: string, // iOS
  email?: string, // Android
};

type Alarm = {
  absoluteDate?: string, // iOS
  relativeOffset?: string,
  structuredLocation?: {
    // iOS
    title?: string,
    proximity?: string, // Proximity
    radius?: number,
    coords?: {
      latitude?: number,
      longitude?: number,
    },
  },
  method?: string, // Method, Android
};

type RecurrenceRule = {
  frequency: string, // Frequency
  interval?: number,
  endDate?: string,
  occurrence?: number,
};

export async function getCalendarsAsync(entityType?: string): Promise<void> {
  if (!entityType) {
    return NativeModules.ExponentCalendar.getCalendarsAsync(null);
  }
  return NativeModules.ExponentCalendar.getCalendarsAsync(entityType);
}

export async function createCalendarAsync(details: Calendar = {}): Promise<string> {
  let color = details.color ? processColor(details.color) : undefined;
  const newDetails = { ...details, id: undefined, color };
  return NativeModules.ExponentCalendar.saveCalendarAsync(newDetails);
}

export async function updateCalendarAsync(id: string, details: Calendar = {}): Promise<string> {
  if (!id) {
    throw new Error(
      'updateCalendarAsync must be called with an id (string) of the target calendar'
    );
  }
  let color = details.color ? processColor(details.color) : undefined;

  if (Platform.OS === 'android') {
    if (
      details.hasOwnProperty('source') ||
      details.hasOwnProperty('color') ||
      details.hasOwnProperty('allowsModifications') ||
      details.hasOwnProperty('allowedAvailabilities') ||
      details.hasOwnProperty('isPrimary') ||
      details.hasOwnProperty('ownerAccount') ||
      details.hasOwnProperty('timeZone') ||
      details.hasOwnProperty('allowedReminders') ||
      details.hasOwnProperty('allowedAttendeeTypes') ||
      details.hasOwnProperty('accessLevel')
    ) {
      console.warn(
        'updateCalendarAsync was called with one or more read-only properties, which will not be updated'
      );
    }
  } else {
    if (
      details.hasOwnProperty('source') ||
      details.hasOwnProperty('type') ||
      details.hasOwnProperty('entityType') ||
      details.hasOwnProperty('allowsModifications') ||
      details.hasOwnProperty('allowedAvailabilities')
    ) {
      console.warn(
        'updateCalendarAsync was called with one or more read-only properties, which will not be updated'
      );
    }
  }

  const newDetails = { ...details, id, color };
  return NativeModules.ExponentCalendar.saveCalendarAsync(newDetails);
}

export async function deleteCalendarAsync(id: string): Promise<void> {
  if (!id) {
    throw new Error(
      'deleteCalendarAsync must be called with an id (string) of the target calendar'
    );
  }
  return NativeModules.ExponentCalendar.deleteCalendarAsync(id);
}

export async function getEventsAsync(
  calendarIds: string[],
  startDate: Date,
  endDate: Date
): Promise<Event[]> {
  if (!startDate) {
    throw new Error('getEventsAsync must be called with a startDate (date) to search for events');
  }
  if (!endDate) {
    throw new Error('getEventsAsync must be called with an endDate (date) to search for events');
  }
  if (!calendarIds || !calendarIds.length) {
    throw new Error(
      'getEventsAsync must be called with a non-empty array of calendarIds to search'
    );
  }
  return NativeModules.ExponentCalendar.getEventsAsync(startDate, endDate, calendarIds);
}

export async function getEventAsync(
  id: string,
  { futureEvents = false, instanceStartDate }: RecurringEventOptions = {}
): Promise<Event> {
  if (!id) {
    throw new Error('getEventAsync must be called with an id (string) of the target event');
  }
  if (Platform.OS === 'ios') {
    return NativeModules.ExponentCalendar.getEventByIdAsync(id, instanceStartDate);
  } else {
    return NativeModules.ExponentCalendar.getEventByIdAsync(id);
  }
}

export async function createEventAsync(calendarId: string, details: Event = {}): Promise<string> {
  if (!calendarId) {
    throw new Error('createEventAsync must be called with an id (string) of the target calendar');
  }

  if (Platform.OS === 'android') {
    if (!details.startDate) {
      throw new Error('createEventAsync requires a startDate (Date)');
    }
    if (!details.endDate) {
      throw new Error('createEventAsync requires an endDate (Date)');
    }
    if (!details.timeZone) {
      throw new Error('createEventAsync requires a timeZone (string)');
    }
  }

  const newDetails = {
    ...details,
    id: undefined,
    calendarId: calendarId === DEFAULT ? undefined : calendarId,
  };
  return NativeModules.ExponentCalendar.saveEventAsync(newDetails, {});
}

export async function updateEventAsync(
  id: string,
  details: Event = {},
  { futureEvents = false, instanceStartDate }: RecurringEventOptions = {}
): Promise<string> {
  if (!id) {
    throw new Error('updateEventAsync must be called with an id (string) of the target event');
  }

  if (Platform.OS === 'ios') {
    if (
      details.hasOwnProperty('creationDate') ||
      details.hasOwnProperty('lastModifiedDate') ||
      details.hasOwnProperty('originalStartDate') ||
      details.hasOwnProperty('isDetached') ||
      details.hasOwnProperty('status') ||
      details.hasOwnProperty('organizer')
    ) {
      console.warn(
        'updateEventAsync was called with one or more read-only properties, which will not be updated'
      );
    }
  }

  const newDetails = { ...details, id, instanceStartDate };
  return NativeModules.ExponentCalendar.saveEventAsync(newDetails, { futureEvents });
}

export async function deleteEventAsync(
  id: string,
  { futureEvents = false, instanceStartDate }: RecurringEventOptions = {}
): Promise<void> {
  if (!id) {
    throw new Error('deleteEventAsync must be called with an id (string) of the target event');
  }
  return NativeModules.ExponentCalendar.deleteEventAsync(
    { id, instanceStartDate },
    { futureEvents }
  );
}

export async function getAttendeesForEventAsync(
  id: string,
  { futureEvents = false, instanceStartDate }: RecurringEventOptions = {}
): Promise<Attendee[]> {
  if (!id) {
    throw new Error(
      'getAttendeesForEventAsync must be called with an id (string) of the target event'
    );
  }
  // Android only takes an ID, iOS takes an object
  const params = Platform.OS === 'ios' ? { id, instanceStartDate } : id;
  return NativeModules.ExponentCalendar.getAttendeesForEventAsync(params);
}

export async function createAttendeeAsync(
  eventId: string,
  details: Attendee = {}
): Promise<string> {
  if (Platform.OS === 'ios') {
    throw new Error('createAttendeeAsync is not available on iOS');
  }
  if (!eventId) {
    throw new Error('createAttendeeAsync must be called with an id (string) of the target event');
  }
  if (!details.email) {
    throw new Error('createAttendeeAsync requires an email (string)');
  }
  if (!details.role) {
    throw new Error('createAttendeeAsync requires a role (string)');
  }
  if (!details.type) {
    throw new Error('createAttendeeAsync requires a type (string)');
  }
  if (!details.status) {
    throw new Error('createAttendeeAsync requires a status (string)');
  }
  const newDetails = { ...details, id: undefined };
  return NativeModules.ExponentCalendar.saveAttendeeForEventAsync(newDetails, eventId);
} // Android

export async function updateAttendeeAsync(id: string, details: Attendee = {}): Promise<string> {
  if (Platform.OS === 'ios') {
    throw new Error('updateAttendeeAsync is not available on iOS');
  }
  if (!id) {
    throw new Error('updateAttendeeAsync must be called with an id (string) of the target event');
  }
  const newDetails = { ...details, id };
  return NativeModules.ExponentCalendar.saveAttendeeForEventAsync(newDetails, null);
} // Android

export async function deleteAttendeeAsync(id: string): Promise<void> {
  if (Platform.OS === 'ios') {
    throw new Error('deleteAttendeeAsync is not available on iOS');
  }
  if (!id) {
    throw new Error('deleteAttendeeAsync must be called with an id (string) of the target event');
  }
  return NativeModules.ExponentCalendar.deleteAttendeeAsync(id);
} // Android

export async function getRemindersAsync(
  calendarIds: string[],
  status: string | null,
  startDate: Date,
  endDate: Date
): Promise<Reminder[]> {
  if (Platform.OS === 'android') {
    throw new Error('getRemindersAsync is not available on Android');
  }
  if (status && !startDate) {
    throw new Error(
      'getRemindersAsync must be called with a startDate (date) to search for reminders'
    );
  }
  if (status && !endDate) {
    throw new Error(
      'getRemindersAsync must be called with an endDate (date) to search for reminders'
    );
  }
  if (!calendarIds || !calendarIds.length) {
    throw new Error(
      'getRemindersAsync must be called with a non-empty array of calendarIds to search'
    );
  }
  return NativeModules.ExponentCalendar.getRemindersAsync(
    startDate || null,
    endDate || null,
    calendarIds,
    status || null
  );
} // iOS

export async function getReminderAsync(id: string): Promise<Reminder> {
  if (Platform.OS === 'android') {
    throw new Error('getReminderAsync is not available on Android');
  }
  if (!id) {
    throw new Error('getReminderAsync must be called with an id (string) of the target reminder');
  }
  return NativeModules.ExponentCalendar.getReminderByIdAsync(id);
} // iOS

export async function createReminderAsync(
  calendarId: string,
  details: Reminder = {}
): Promise<string> {
  if (Platform.OS === 'android') {
    throw new Error('createReminderAsync is not available on Android');
  }
  if (!calendarId) {
    throw new Error(
      'createReminderAsync must be called with an id (string) of the target calendar'
    );
  }
  const newDetails = {
    ...details,
    id: undefined,
    calendarId: calendarId === DEFAULT ? undefined : calendarId,
  };
  return NativeModules.ExponentCalendar.saveReminderAsync(newDetails);
} // iOS

export async function updateReminderAsync(id: string, details: Reminder = {}): Promise<string> {
  if (Platform.OS === 'android') {
    throw new Error('updateReminderAsync is not available on Android');
  }
  if (!id) {
    throw new Error(
      'updateReminderAsync must be called with an id (string) of the target reminder'
    );
  }

  if (details.hasOwnProperty('creationDate') || details.hasOwnProperty('lastModifiedDate')) {
    console.warn(
      'updateReminderAsync was called with one or more read-only properties, which will not be updated'
    );
  }

  const newDetails = { ...details, id };
  return NativeModules.ExponentCalendar.saveReminderAsync(newDetails);
} // iOS

export async function deleteReminderAsync(id: string): Promise<void> {
  if (Platform.OS === 'android') {
    throw new Error('deleteReminderAsync is not available on Android');
  }
  if (!id) {
    throw new Error(
      'deleteReminderAsync must be called with an id (string) of the target reminder'
    );
  }
  return NativeModules.ExponentCalendar.deleteReminderAsync(id);
} // iOS

export async function getSourcesAsync(): Promise<Source[]> {
  if (Platform.OS === 'android') {
    throw new Error('getSourcesAsync is not available on Android');
  }
  return NativeModules.ExponentCalendar.getSourcesAsync();
} // iOS

export async function getSourceAsync(id: string): Promise<Source> {
  if (Platform.OS === 'android') {
    throw new Error('getSourceAsync is not available on Android');
  }
  if (!id) {
    throw new Error('getSourceAsync must be called with an id (string) of the target source');
  }
  return NativeModules.ExponentCalendar.getSourceByIdAsync(id);
} // iOS

export function openEventInCalendar(id: string): void {
  if (Platform.OS === 'ios') {
    console.warn('openEventInCalendar is not available on iOS');
    return;
  }
  if (!id) {
    throw new Error('openEventInCalendar must be called with an id (string) of the target event');
  }
  return NativeModules.ExponentCalendar.openEventInCalendar(parseInt(id, 10));
} // Android

export const EntityTypes = {
  EVENT: 'event',
  REMINDER: 'reminder',
};

export const Frequency = {
  DAILY: 'daily',
  WEEKLY: 'weekly',
  MONTHLY: 'monthly',
  YEARLY: 'yearly',
};

export const Availability = {
  NOT_SUPPORTED: 'notSupported', // iOS
  BUSY: 'busy',
  FREE: 'free',
  TENTATIVE: 'tentative',
  UNAVAILABLE: 'unavailable', // iOS
};

export const CalendarType = {
  LOCAL: 'local',
  CALDAV: 'caldav',
  EXCHANGE: 'exchange',
  SUBSCRIBED: 'subscribed',
  BIRTHDAYS: 'birthdays',
}; // iOS

export const EventStatus = {
  NONE: 'none',
  CONFIRMED: 'confirmed',
  TENTATIVE: 'tentative',
  CANCELED: 'canceled',
};

export const SourceType = {
  LOCAL: 'local',
  EXCHANGE: 'exchange',
  CALDAV: 'caldav',
  MOBILEME: 'mobileme',
  SUBSCRIBED: 'subscribed',
  BIRTHDAYS: 'birthdays',
};

export const AttendeeRole = {
  UNKNOWN: 'unknown', // iOS
  REQUIRED: 'required', // iOS
  OPTIONAL: 'optional', // iOS
  CHAIR: 'chair', // iOS
  NON_PARTICIPANT: 'nonParticipant', // iOS
  ATTENDEE: 'attendee', // Android
  ORGANIZER: 'organizer', // Android
  PERFORMER: 'performer', // Android
  SPEAKER: 'speaker', // Android
  NONE: 'none', // Android
};

export const AttendeeStatus = {
  UNKNOWN: 'unknown', // iOS
  PENDING: 'pending', // iOS
  ACCEPTED: 'accepted',
  DECLINED: 'declined',
  TENTATIVE: 'tentative',
  DELEGATED: 'delegated', // iOS
  COMPLETED: 'completed', // iOS
  IN_PROCESS: 'inProcess', // iOS
  INVITED: 'invited', // Android
  NONE: 'none', // Android
};

export const AttendeeType = {
  UNKNOWN: 'unknown', // iOS
  PERSON: 'person', // iOS
  ROOM: 'room', // iOS
  GROUP: 'group', // iOS
  RESOURCE: 'resource',
  OPTIONAL: 'optional', // Android
  REQUIRED: 'required', // Android
  NONE: 'none', // Android
};

export const AlarmMethod = {
  ALARM: 'alarm',
  ALERT: 'alert',
  EMAIL: 'email',
  SMS: 'sms',
  DEFAULT: 'default',
};

export const EventAccessLevel = {
  CONFIDENTIAL: 'confidential',
  PRIVATE: 'private',
  PUBLIC: 'public',
  DEFAULT: 'default',
};

export const CalendarAccessLevel = {
  CONTRIBUTOR: 'contributor',
  EDITOR: 'editor',
  FREEBUSY: 'freebusy',
  OVERRIDE: 'override',
  OWNER: 'owner',
  READ: 'read',
  RESPOND: 'respond',
  ROOT: 'root',
  NONE: 'none',
};

export const ReminderStatus = {
  COMPLETED: 'completed',
  INCOMPLETE: 'incomplete',
};

export const DEFAULT = 'default';