import { Credential } from "@prisma/client";
import short from "short-uuid";
import { v5 as uuidv5 } from "uuid";

import appStore from "@calcom/app-store";
import { getUid } from "@calcom/lib/CalEventParser";
import logger from "@calcom/lib/logger";
import type { CalendarEvent } from "@calcom/types/Calendar";
import type { EventResult, PartialReference } from "@calcom/types/EventManager";
import type { VideoApiAdapter, VideoApiAdapterFactory } from "@calcom/types/VideoApiAdapter";

const log = logger.getChildLogger({ prefix: ["[lib] videoClient"] });

const translator = short();

// factory
const getVideoAdapters = (withCredentials: Credential[]): VideoApiAdapter[] =>
  withCredentials.reduce<VideoApiAdapter[]>((acc, cred) => {
    const appName = cred.type.split("_").join(""); // Transform `zoom_video` to `zoomvideo`;
    const app = appStore[appName as keyof typeof appStore];
    if ("lib" in app && "VideoApiAdapter" in app.lib) {
      const makeVideoApiAdapter = app.lib.VideoApiAdapter as VideoApiAdapterFactory;
      const videoAdapter = makeVideoApiAdapter(cred);
      acc.push(videoAdapter);
      return acc;
    }
    return acc;
  }, []);

const getBusyVideoTimes = (withCredentials: Credential[]) =>
  Promise.all(getVideoAdapters(withCredentials).map((c) => c.getAvailability())).then((results) =>
    results.reduce((acc, availability) => acc.concat(availability), [])
  );

const createMeeting = async (credential: Credential, calEvent: CalendarEvent): Promise<EventResult> => {
  const uid: string = getUid(calEvent);

  if (!credential) {
    throw new Error(
      "Credentials must be set! Video platforms are optional, so this method shouldn't even be called when no video credentials are set."
    );
  }

  const videoAdapters = getVideoAdapters([credential]);
  const [firstVideoAdapter] = videoAdapters;
  const createdMeeting = await firstVideoAdapter.createMeeting(calEvent).catch((e) => {
    log.error("createMeeting failed", e, calEvent);
  });

  if (!createdMeeting) {
    return {
      type: credential.type,
      success: false,
      uid,
      originalEvent: calEvent,
    };
  }

  return {
    type: credential.type,
    success: true,
    uid,
    createdEvent: createdMeeting,
    originalEvent: calEvent,
  };
};

const updateMeeting = async (
  credential: Credential,
  calEvent: CalendarEvent,
  bookingRef: PartialReference | null
): Promise<EventResult> => {
  const uid = translator.fromUUID(uuidv5(JSON.stringify(calEvent), uuidv5.URL));

  let success = true;

  const [firstVideoAdapter] = getVideoAdapters([credential]);
  const updatedMeeting =
    credential && bookingRef
      ? await firstVideoAdapter.updateMeeting(bookingRef, calEvent).catch((e) => {
          log.error("updateMeeting failed", e, calEvent);
          success = false;
          return undefined;
        })
      : undefined;

  if (!updatedMeeting) {
    return {
      type: credential.type,
      success,
      uid,
      originalEvent: calEvent,
    };
  }

  return {
    type: credential.type,
    success,
    uid,
    updatedEvent: updatedMeeting,
    originalEvent: calEvent,
  };
};

const deleteMeeting = (credential: Credential, uid: string): Promise<unknown> => {
  if (credential) {
    return getVideoAdapters([credential])[0].deleteMeeting(uid);
  }

  return Promise.resolve({});
};

export { getBusyVideoTimes, createMeeting, updateMeeting, deleteMeeting };