import React, { useState } from "react";
import Link from "next/link";
import { useRouter } from "next/router";
import { observer } from "mobx-react-lite";
import { Info, LinkIcon, Pencil, Star, Trash2 } from "lucide-react";
// hooks
import { useEventTracker, useMember, useModule, useUser } from "hooks/store";
// components
import { CreateUpdateModuleModal, DeleteModuleModal } from "components/modules";
// ui
import { Avatar, AvatarGroup, CustomMenu, LayersIcon, Tooltip, TOAST_TYPE, setToast, setPromiseToast } 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";
import { MODULE_FAVORITED, MODULE_UNFAVORITED } from "constants/event-tracker";

type Props = {
  moduleId: string;
};

export const ModuleCardItem: 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;
  // store hooks
  const {
    membership: { currentProjectRole },
  } = useUser();
  const { getModuleById, addModuleToFavorites, removeModuleFromFavorites } = useModule();
  const { getUserDetails } = useMember();
  const { setTrackElement, captureEvent } = useEventTracker();
  // 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;

    const addToFavoritePromise = addModuleToFavorites(workspaceSlug.toString(), projectId.toString(), moduleId).then(
      () => {
        captureEvent(MODULE_FAVORITED, {
          module_id: moduleId,
          element: "Grid layout",
          state: "SUCCESS",
        });
      }
    );

    setPromiseToast(addToFavoritePromise, {
      loading: "Adding module to favorites...",
      success: {
        title: "Success!",
        message: () => "Module added to favorites.",
      },
      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;

    const removeFromFavoritePromise = removeModuleFromFavorites(
      workspaceSlug.toString(),
      projectId.toString(),
      moduleId
    ).then(() => {
      captureEvent(MODULE_UNFAVORITED, {
        module_id: moduleId,
        element: "Grid layout",
        state: "SUCCESS",
      });
    });

    setPromiseToast(removeFromFavoritePromise, {
      loading: "Removing module from favorites...",
      success: {
        title: "Success!",
        message: () => "Module removed from favorites.",
      },
      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(() => {
      setToast({
        type: TOAST_TYPE.SUCCESS,
        title: "Link Copied!",
        message: "Module link copied to clipboard.",
      });
    });
  };

  const handleEditModule = (e: React.MouseEvent<HTMLButtonElement>) => {
    e.preventDefault();
    e.stopPropagation();
    setTrackElement("Modules page grid layout");
    setEditModal(true);
  };

  const handleDeleteModule = (e: React.MouseEvent<HTMLButtonElement>) => {
    e.preventDefault();
    e.stopPropagation();
    setTrackElement("Modules page grid layout");
    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 moduleTotalIssues =
    moduleDetails.backlog_issues +
    moduleDetails.unstarted_issues +
    moduleDetails.started_issues +
    moduleDetails.completed_issues +
    moduleDetails.cancelled_issues;

  const completionPercentage = (moduleDetails.completed_issues / moduleTotalIssues) * 100;

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

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

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

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

  const issueCount = module
    ? !moduleTotalIssues || moduleTotalIssues === 0
      ? "0 Issue"
      : moduleTotalIssues === moduleDetails.completed_issues
      ? `${moduleTotalIssues} Issue${moduleTotalIssues > 1 ? "s" : ""}`
      : `${moduleDetails.completed_issues}/${moduleTotalIssues} Issues`
    : "0 Issue";

  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_id}/modules/${moduleDetails.id}`}>
        <div className="flex h-44 w-full flex-col justify-between rounded  border border-custom-border-100 bg-custom-background-100 p-4 text-sm hover:shadow-md">
          <div>
            <div className="flex items-center justify-between gap-2">
              <Tooltip tooltipContent={moduleDetails.name} position="top">
                <span className="truncate text-base font-medium">{moduleDetails.name}</span>
              </Tooltip>
              <div className="flex items-center gap-2">
                {moduleStatus && (
                  <span
                    className="flex h-6 w-20 items-center justify-center rounded-sm text-center text-xs"
                    style={{
                      color: moduleStatus.color,
                      backgroundColor: `${moduleStatus.color}20`,
                    }}
                  >
                    {moduleStatus.label}
                  </span>
                )}
                <button onClick={openModuleOverview}>
                  <Info className="h-4 w-4 text-custom-text-400" />
                </button>
              </div>
            </div>
          </div>

          <div className="flex flex-col gap-3">
            <div className="flex items-center justify-between">
              <div className="flex items-center gap-1.5 text-custom-text-200">
                <LayersIcon className="h-4 w-4 text-custom-text-300" />
                <span className="text-xs text-custom-text-300">{issueCount ?? "0 Issue"}</span>
              </div>
              {moduleDetails.member_ids?.length > 0 && (
                <Tooltip tooltipContent={`${moduleDetails.member_ids.length} Members`}>
                  <div className="flex cursor-default items-center gap-1">
                    <AvatarGroup showTooltip={false}>
                      {moduleDetails.member_ids.map((member_id) => {
                        const member = getUserDetails(member_id);
                        return <Avatar key={member?.id} name={member?.display_name} src={member?.avatar} />;
                      })}
                    </AvatarGroup>
                  </div>
                </Tooltip>
              )}
            </div>

            <Tooltip
              tooltipContent={isNaN(completionPercentage) ? "0" : `${completionPercentage.toFixed(0)}%`}
              position="top-left"
            >
              <div className="flex w-full items-center">
                <div
                  className="bar relative h-1.5 w-full rounded bg-custom-background-90"
                  style={{
                    boxShadow: "1px 1px 4px 0px rgba(161, 169, 191, 0.35) inset",
                  }}
                >
                  <div
                    className="absolute left-0 top-0 h-1.5 rounded bg-blue-600 duration-300"
                    style={{
                      width: `${isNaN(completionPercentage) ? 0 : completionPercentage.toFixed(0)}%`,
                    }}
                  />
                </div>
              </div>
            </Tooltip>

            <div className="flex items-center justify-between">
              {isDateValid ? (
                <>
                  <span className="text-xs text-custom-text-300">
                    {renderFormattedDate(startDate) ?? "_ _"} - {renderFormattedDate(endDate) ?? "_ _"}
                  </span>
                </>
              ) : (
                <span className="text-xs text-custom-text-400">No due date</span>
              )}

              <div className="z-[5] flex items-center gap-1.5">
                {isEditingAllowed &&
                  (moduleDetails.is_favorite ? (
                    <button type="button" onClick={handleRemoveFromFavorites}>
                      <Star className="h-3.5 w-3.5 fill-current text-amber-500" />
                    </button>
                  ) : (
                    <button type="button" onClick={handleAddToFavorites}>
                      <Star className="h-3.5 w-3.5 text-custom-text-200" />
                    </button>
                  ))}

                <CustomMenu ellipsis className="z-10" placement="left-start">
                  {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>
          </div>
        </div>
      </Link>
    </>
  );
});