// react
import React from "react";

// next
import Link from "next/link";
import { useRouter } from "next/router";

// swr
import useSWR, { mutate } from "swr";

// fetch key
import { PROJECT_ISSUES_ACTIVITY } from "constants/fetch-keys";

// services
import issuesService from "services/issues.service";

// hooks
import useUser from "hooks/use-user";
import useToast from "hooks/use-toast";

// components
import { Label, AddComment } from "components/web-view";
import { CommentCard } from "components/issues/comment";
import { ActivityIcon, ActivityMessage } from "components/core";

// helpers
import { timeAgo } from "helpers/date-time.helper";

// ui
import { Icon } from "components/ui";

// types
import type { IIssue, IIssueComment } from "types";

type Props = {
  allowed: boolean;
  issueDetails: IIssue;
};

export const IssueActivity: React.FC<Props> = (props) => {
  const { issueDetails, allowed } = props;

  const router = useRouter();
  const { workspaceSlug, projectId, issueId } = router.query;

  const { user } = useUser();

  const { data: issueActivities, mutate: mutateIssueActivity } = useSWR(
    workspaceSlug && projectId && issueId ? PROJECT_ISSUES_ACTIVITY(issueId.toString()) : null,
    workspaceSlug && projectId && issueId
      ? () =>
          issuesService.getIssueActivities(
            workspaceSlug.toString(),
            projectId.toString(),
            issueId.toString()
          )
      : null
  );

  const handleCommentUpdate = async (comment: any) => {
    if (!workspaceSlug || !projectId || !issueId) return;

    await issuesService
      .patchIssueComment(
        workspaceSlug as string,
        projectId as string,
        issueId as string,
        comment.id,
        comment,
        user
      )
      .then(() => mutateIssueActivity());
  };

  const handleCommentDelete = async (commentId: string) => {
    if (!workspaceSlug || !projectId || !issueId) return;

    mutateIssueActivity((prevData: any) => prevData?.filter((p: any) => p.id !== commentId), false);

    await issuesService
      .deleteIssueComment(
        workspaceSlug as string,
        projectId as string,
        issueId as string,
        commentId,
        user
      )
      .then(() => mutateIssueActivity());
  };

  const handleAddComment = async (formData: IIssueComment) => {
    if (!workspaceSlug || !issueDetails) return;

    await issuesService
      .createIssueComment(
        workspaceSlug.toString(),
        issueDetails.project,
        issueDetails.id,
        formData,
        user
      )
      .then(() => {
        mutate(PROJECT_ISSUES_ACTIVITY(issueDetails.id));
      })
      .catch(() =>
        console.log(
          "toast",
          JSON.stringify({
            type: "error",
            title: "Error!",
            message: "Comment could not be posted. Please try again.",
          })
        )
      );
  };

  return (
    <div>
      <Label>Activity</Label>
      <div className="mt-1 space-y-[6px] p-2 border rounded-[4px]">
        <ul role="list" className="-mb-4">
          {issueActivities?.map((activityItem, index) => {
            // determines what type of action is performed
            const message = activityItem.field ? (
              <ActivityMessage activity={activityItem} />
            ) : (
              "created the issue."
            );

            if ("field" in activityItem && activityItem.field !== "updated_by") {
              return (
                <li key={activityItem.id}>
                  <div className="relative pb-1">
                    {issueActivities.length > 1 && index !== issueActivities.length - 1 ? (
                      <span
                        className="absolute top-5 left-5 -ml-px h-full w-0.5 bg-custom-background-80"
                        aria-hidden="true"
                      />
                    ) : null}
                    <div className="relative flex items-start space-x-2">
                      <div>
                        <div className="relative px-1.5">
                          <div className="mt-1.5">
                            <div className="ring-6 flex h-7 w-7 items-center justify-center rounded-full bg-custom-background-80 text-custom-text-200 ring-white">
                              {activityItem.field ? (
                                activityItem.new_value === "restore" ? (
                                  <Icon
                                    iconName="history"
                                    className="text-sm text-custom-text-200"
                                  />
                                ) : (
                                  <ActivityIcon activity={activityItem} />
                                )
                              ) : activityItem.actor_detail.avatar &&
                                activityItem.actor_detail.avatar !== "" ? (
                                <img
                                  src={activityItem.actor_detail.avatar}
                                  alt={activityItem.actor_detail.display_name}
                                  height={24}
                                  width={24}
                                  className="rounded-full"
                                />
                              ) : (
                                <div
                                  className={`grid h-7 w-7 place-items-center rounded-full border-2 border-white bg-gray-700 text-xs text-white`}
                                >
                                  {activityItem.actor_detail.is_bot
                                    ? activityItem.actor_detail.first_name.charAt(0)
                                    : activityItem.actor_detail.display_name.charAt(0)}
                                </div>
                              )}
                            </div>
                          </div>
                        </div>
                      </div>
                      <div className="min-w-0 flex-1 py-3">
                        <div className="text-xs text-custom-text-200 break-words">
                          {activityItem.field === "archived_at" &&
                          activityItem.new_value !== "restore" ? (
                            <span className="text-gray font-medium">Plane</span>
                          ) : activityItem.actor_detail.is_bot ? (
                            <span className="text-gray font-medium">
                              {activityItem.actor_detail.first_name} Bot
                            </span>
                          ) : (
                            <Link
                              href={`/${workspaceSlug}/profile/${activityItem.actor_detail.id}`}
                            >
                              <a className="text-gray font-medium">
                                {activityItem.actor_detail.is_bot
                                  ? activityItem.actor_detail.first_name
                                  : activityItem.actor_detail.display_name}
                              </a>
                            </Link>
                          )}{" "}
                          {message}{" "}
                          <span className="whitespace-nowrap">
                            {timeAgo(activityItem.created_at)}
                          </span>
                        </div>
                      </div>
                    </div>
                  </div>
                </li>
              );
            } else if ("comment_json" in activityItem)
              return (
                <div key={activityItem.id} className="my-4">
                  <CommentCard
                    workspaceSlug={workspaceSlug as string}
                    comment={activityItem as any}
                    onSubmit={handleCommentUpdate}
                    handleCommentDeletion={handleCommentDelete}
                  />
                </div>
              );
          })}
          <li>
            <div className="my-4">
              <AddComment
                onSubmit={handleAddComment}
                disabled={
                  !allowed ||
                  !issueDetails ||
                  issueDetails.state === "closed" ||
                  issueDetails.state === "archived"
                }
              />
            </div>
          </li>
        </ul>
      </div>
    </div>
  );
};