import { useEffect, useState } from "react";
import Image from "next/image";
import { observer } from "mobx-react-lite";
import useSWR from "swr";
import { useTheme } from "next-themes";
// mobx store
import { useMobxStore } from "lib/mobx/store-provider";
// services
import { WorkspaceService } from "services/workspace.service";
// hooks
import useUserAuth from "hooks/use-user-auth";
// layouts
import DefaultLayout from "layouts/default-layout";
import { UserAuthWrapper } from "layouts/auth-layout";
// components
import { InviteMembers, JoinWorkspaces, UserDetails, Workspace } from "components/onboarding";
// ui
import { Spinner } from "@plane/ui";
// images
import BluePlaneLogoWithoutText from "public/plane-logos/blue-without-text.png";
import BlackHorizontalLogo from "public/plane-logos/black-horizontal-with-blue-logo.svg";
import WhiteHorizontalLogo from "public/plane-logos/white-horizontal-with-blue-logo.svg";
// types
import { IUser, TOnboardingSteps } from "types";
import type { NextPage } from "next";

// services
const workspaceService = new WorkspaceService();

const Onboarding: NextPage = observer(() => {
  const [step, setStep] = useState<number | null>(null);

  const { user: userStore, workspace: workspaceStore } = useMobxStore();

  const user = userStore.currentUser ?? undefined;
  const workspaces = workspaceStore.workspaces;
  const userWorkspaces = workspaceStore.workspacesCreateByCurrentUser;

  const { theme, setTheme } = useTheme();

  const {} = useUserAuth("onboarding");

  const { data: invitations } = useSWR("USER_WORKSPACE_INVITATIONS_LIST", () =>
    workspaceService.userWorkspaceInvitations()
  );

  // update last active workspace details
  const updateLastWorkspace = async () => {
    if (!workspaces) return;

    await userStore.updateCurrentUser({
      last_workspace_id: workspaces[0]?.id,
    });
  };

  // handle step change
  const stepChange = async (steps: Partial<TOnboardingSteps>) => {
    if (!user) return;

    const payload: Partial<IUser> = {
      onboarding_step: {
        ...user.onboarding_step,
        ...steps,
      },
    };

    await userStore.updateCurrentUser(payload);
  };

  // complete onboarding
  const finishOnboarding = async () => {
    if (!user) return;

    await userStore.updateUserOnBoard();
  };

  useEffect(() => {
    setTheme("system");
  }, [setTheme]);

  useEffect(() => {
    const handleStepChange = async () => {
      if (!user || !invitations) return;

      const onboardingStep = user.onboarding_step;

      if (!onboardingStep.profile_complete && step !== 1) setStep(1);

      if (onboardingStep.profile_complete) {
        if (!onboardingStep.workspace_join && invitations.length > 0 && step !== 2 && step !== 4) setStep(4);
        else if (!onboardingStep.workspace_create && (step !== 4 || onboardingStep.workspace_join) && step !== 2)
          setStep(2);
      }

      if (
        onboardingStep.profile_complete &&
        onboardingStep.workspace_create &&
        !onboardingStep.workspace_invite &&
        step !== 3
      )
        setStep(3);
    };

    handleStepChange();
  }, [user, invitations, step]);

  return (
    <UserAuthWrapper>
      {user && step !== null ? (
        <DefaultLayout>
          <div className="flex h-full w-full flex-col gap-y-2 sm:gap-y-0 sm:flex-row overflow-hidden">
            <div className="relative h-1/6 flex-shrink-0 sm:w-2/12 md:w-3/12 lg:w-1/5">
              <div className="absolute border-b-[0.5px] sm:border-r-[0.5px] border-custom-border-200 h-[0.5px] w-full top-1/2 left-0 -translate-y-1/2 sm:h-screen sm:w-[0.5px] sm:top-0 sm:left-1/2 md:left-1/3 sm:-translate-x-1/2 sm:translate-y-0 z-10" />
              {step === 1 ? (
                <div className="absolute grid place-items-center bg-custom-background-100 px-3 sm:px-0 py-5 left-2 sm:left-1/2 md:left-1/3 sm:-translate-x-1/2 top-1/2 -translate-y-1/2 sm:translate-y-0 sm:top-12 z-10">
                  <div className="h-[30px] w-[30px]">
                    <Image src={BluePlaneLogoWithoutText} alt="Plane logo" />
                  </div>
                </div>
              ) : (
                <div className="absolute grid place-items-center bg-custom-background-100 px-3 sm:px-0 sm:py-5 left-5 sm:left-1/2 md:left-1/3 sm:-translate-x-[15px] top-1/2 -translate-y-1/2 sm:translate-y-0 sm:top-12 z-10">
                  <div className="h-[30px] w-[133px]">
                    {theme === "light" ? (
                      <Image src={BlackHorizontalLogo} alt="Plane black logo" />
                    ) : (
                      <Image src={WhiteHorizontalLogo} alt="Plane white logo" />
                    )}
                  </div>
                </div>
              )}
              <div className="absolute sm:fixed text-custom-text-100 text-sm font-medium right-4 top-1/4 sm:top-12 -translate-y-1/2 sm:translate-y-0 sm:right-16 sm:py-5">
                {user?.email}
              </div>
            </div>
            <div className="relative flex justify-center sm:items-center h-full px-8 pb-0 sm:px-0 sm:py-12 sm:pr-[8.33%] sm:w-10/12 md:w-9/12 lg:w-4/5 overflow-hidden">
              {step === 1 ? (
                <UserDetails user={user} />
              ) : step === 2 ? (
                <Workspace
                  finishOnboarding={finishOnboarding}
                  stepChange={stepChange}
                  updateLastWorkspace={updateLastWorkspace}
                  user={user}
                  workspaces={workspaces}
                />
              ) : step === 3 ? (
                <InviteMembers
                  finishOnboarding={finishOnboarding}
                  stepChange={stepChange}
                  user={user}
                  workspace={userWorkspaces?.[0]}
                />
              ) : (
                step === 4 && (
                  <JoinWorkspaces
                    finishOnboarding={finishOnboarding}
                    stepChange={stepChange}
                    updateLastWorkspace={updateLastWorkspace}
                  />
                )
              )}
            </div>
            {step !== 4 && (
              <div className="sticky sm:fixed bottom-0 md:bottom-14 md:right-16 py-6 md:py-0 flex justify-center md:justify-end bg-custom-background-100 md:bg-transparent pointer-events-none w-full z-[1]">
                <div className="w-3/4 md:w-1/5 space-y-1">
                  <p className="text-xs text-custom-text-200">{step} of 3 steps</p>
                  <div className="relative h-1 w-full rounded bg-custom-background-80">
                    <div
                      className="absolute top-0 left-0 h-1 rounded bg-custom-primary-100 duration-300"
                      style={{
                        width: `${((step / 3) * 100).toFixed(0)}%`,
                      }}
                    />
                  </div>
                </div>
              </div>
            )}
          </div>
        </DefaultLayout>
      ) : (
        <div className="h-screen w-full grid place-items-center">
          <Spinner />
        </div>
      )}
    </UserAuthWrapper>
  );
});

export default Onboarding;