import React, { useState } from "react";
import Link from "next/link";
import { useRouter } from "next/router";
import { observer } from "mobx-react-lite";
import { Check, Info, LinkIcon, Pencil, Star, Trash2, User2 } from "lucide-react";
// hooks
import { useModule, useUser } from "hooks/store";
import useToast from "hooks/use-toast";
// components
import { CreateUpdateModuleModal, DeleteModuleModal } from "components/modules";
// ui
import { Avatar, AvatarGroup, CircularProgressIndicator, CustomMenu, Tooltip } from "@plane/ui";
// helpers
import { copyUrlToClipboard } from "helpers/string.helper";
import { renderFormattedDate } from "helpers/date-time.helper";
// constants
import { MODULE_STATUS } from "constants/module";
import { EUserProjectRoles } from "constants/project";

type Props = {
  moduleId: string;
};

export const ModuleListItem: React.FC<Props> = observer((props) => {
  const { moduleId } = props;
  // states
  const [editModal, setEditModal] = useState(false);
  const [deleteModal, setDeleteModal] = useState(false);
  // router
  const router = useRouter();
  const { workspaceSlug, projectId } = router.query;
  // toast alert
  const { setToastAlert } = useToast();
  // store hooks
  const {
    membership: { currentProjectRole },
  } = useUser();
  const { getModuleById, addModuleToFavorites, removeModuleFromFavorites } = useModule();
  // derived values
  const moduleDetails = getModuleById(moduleId);
  const isEditingAllowed = !!currentProjectRole && currentProjectRole >= EUserProjectRoles.MEMBER;

  const handleAddToFavorites = (e: React.MouseEvent<HTMLButtonElement>) => {
    e.stopPropagation();
    e.preventDefault();
    if (!workspaceSlug || !projectId) return;

    addModuleToFavorites(workspaceSlug.toString(), projectId.toString(), moduleId).catch(() => {
      setToastAlert({
        type: "error",
        title: "Error!",
        message: "Couldn't add the module to favorites. Please try again.",
      });
    });
  };

  const handleRemoveFromFavorites = (e: React.MouseEvent<HTMLButtonElement>) => {
    e.stopPropagation();
    e.preventDefault();
    if (!workspaceSlug || !projectId) return;

    removeModuleFromFavorites(workspaceSlug.toString(), projectId.toString(), moduleId).catch(() => {
      setToastAlert({
        type: "error",
        title: "Error!",
        message: "Couldn't remove the module from favorites. Please try again.",
      });
    });
  };

  const handleCopyText = (e: React.MouseEvent<HTMLButtonElement>) => {
    e.stopPropagation();
    e.preventDefault();
    copyUrlToClipboard(`${workspaceSlug}/projects/${projectId}/modules/${moduleId}`).then(() => {
      setToastAlert({
        type: "success",
        title: "Link Copied!",
        message: "Module link copied to clipboard.",
      });
    });
  };

  const handleEditModule = (e: React.MouseEvent<HTMLButtonElement>) => {
    e.preventDefault();
    e.stopPropagation();
    setEditModal(true);
  };

  const handleDeleteModule = (e: React.MouseEvent<HTMLButtonElement>) => {
    e.preventDefault();
    e.stopPropagation();
    setDeleteModal(true);
  };

  const openModuleOverview = (e: React.MouseEvent<HTMLButtonElement>) => {
    e.stopPropagation();
    e.preventDefault();
    const { query } = router;

    router.push({
      pathname: router.pathname,
      query: { ...query, peekModule: moduleId },
    });
  };

  if (!moduleDetails) return null;

  const completionPercentage =
    ((moduleDetails.completed_issues + moduleDetails.cancelled_issues) / moduleDetails.total_issues) * 100;

  const endDate = new Date(moduleDetails.target_date ?? "");
  const startDate = new Date(moduleDetails.start_date ?? "");

  const renderDate = moduleDetails.start_date || moduleDetails.target_date;

  // const areYearsEqual = startDate.getFullYear() === endDate.getFullYear();

  const moduleStatus = MODULE_STATUS.find((status) => status.value === moduleDetails.status);

  const progress = isNaN(completionPercentage) ? 0 : Math.floor(completionPercentage);

  const completedModuleCheck = moduleDetails.status === "completed";

  return (
    <>
      {workspaceSlug && projectId && (
        <CreateUpdateModuleModal
          isOpen={editModal}
          onClose={() => setEditModal(false)}
          data={moduleDetails}
          projectId={projectId.toString()}
          workspaceSlug={workspaceSlug.toString()}
        />
      )}
      <DeleteModuleModal data={moduleDetails} isOpen={deleteModal} onClose={() => setDeleteModal(false)} />
      <Link href={`/${workspaceSlug}/projects/${moduleDetails.project}/modules/${moduleDetails.id}`}>
        <div className="group flex h-16 w-full items-center justify-between gap-5 border-b border-custom-border-100 bg-custom-background-100 px-5 py-6 text-sm hover:bg-custom-background-90">
          <div className="flex w-full items-center gap-3 truncate">
            <div className="flex items-center gap-4 truncate">
              <span className="flex-shrink-0">
                <CircularProgressIndicator size={38} percentage={progress}>
                  {completedModuleCheck ? (
                    progress === 100 ? (
                      <Check className="h-3 w-3 stroke-[2] text-custom-primary-100" />
                    ) : (
                      <span className="text-sm text-custom-primary-100">{`!`}</span>
                    )
                  ) : progress === 100 ? (
                    <Check className="h-3 w-3 stroke-[2] text-custom-primary-100" />
                  ) : (
                    <span className="text-xs text-custom-text-300">{`${progress}%`}</span>
                  )}
                </CircularProgressIndicator>
              </span>
              <Tooltip tooltipContent={moduleDetails.name} position="top">
                <span className="truncate text-base font-medium">{moduleDetails.name}</span>
              </Tooltip>
            </div>
            <button onClick={openModuleOverview} className="z-10 hidden flex-shrink-0 group-hover:flex">
              <Info className="h-4 w-4 text-custom-text-400" />
            </button>
          </div>

          <div className="flex w-full items-center justify-end gap-2.5 md:w-auto md:flex-shrink-0 ">
            <div className="flex items-center justify-center">
              {moduleStatus && (
                <span
                  className="flex h-6 w-20 items-center justify-center rounded-sm text-center text-xs"
                  style={{
                    color: moduleStatus.color,
                    backgroundColor: `${moduleStatus.color}20`,
                  }}
                >
                  {moduleStatus.label}
                </span>
              )}
            </div>

            {renderDate && (
              <span className="flex w-40 items-center justify-center gap-2 text-xs text-custom-text-300">
                {renderFormattedDate(startDate) ?? "_ _"} - {renderFormattedDate(endDate) ?? "_ _"}
              </span>
            )}

            <Tooltip tooltipContent={`${moduleDetails.members_detail.length} Members`}>
              <div className="flex w-16 cursor-default items-center justify-center gap-1">
                {moduleDetails.members_detail.length > 0 ? (
                  <AvatarGroup showTooltip={false}>
                    {moduleDetails.members_detail.map((member) => (
                      <Avatar key={member.id} name={member.display_name} src={member.avatar} />
                    ))}
                  </AvatarGroup>
                ) : (
                  <span className="flex h-5 w-5 items-end justify-center rounded-full border border-dashed border-custom-text-400 bg-custom-background-80">
                    <User2 className="h-4 w-4 text-custom-text-400" />
                  </span>
                )}
              </div>
            </Tooltip>

            {isEditingAllowed &&
              (moduleDetails.is_favorite ? (
                <button type="button" onClick={handleRemoveFromFavorites} className="z-[1]">
                  <Star className="h-3.5 w-3.5 fill-current text-amber-500" />
                </button>
              ) : (
                <button type="button" onClick={handleAddToFavorites} className="z-[1]">
                  <Star className="h-3.5 w-3.5 text-custom-text-300" />
                </button>
              ))}

            <CustomMenu width="auto" verticalEllipsis buttonClassName="z-[1]">
              {isEditingAllowed && (
                <>
                  <CustomMenu.MenuItem onClick={handleEditModule}>
                    <span className="flex items-center justify-start gap-2">
                      <Pencil className="h-3 w-3" />
                      <span>Edit module</span>
                    </span>
                  </CustomMenu.MenuItem>
                  <CustomMenu.MenuItem onClick={handleDeleteModule}>
                    <span className="flex items-center justify-start gap-2">
                      <Trash2 className="h-3 w-3" />
                      <span>Delete module</span>
                    </span>
                  </CustomMenu.MenuItem>
                </>
              )}
              <CustomMenu.MenuItem onClick={handleCopyText}>
                <span className="flex items-center justify-start gap-2">
                  <LinkIcon className="h-3 w-3" />
                  <span>Copy module link</span>
                </span>
              </CustomMenu.MenuItem>
            </CustomMenu>
          </div>
        </div>
      </Link>
    </>
  );
});