/*
 * Copyright (c) 2020 - present Cloudogu GmbH
 *
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU Affero General Public License as published by the Free
 * Software Foundation, version 3.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see https://www.gnu.org/licenses/.
 */

import React, { FC, useState, useRef, useLayoutEffect, Dispatch } from "react";
import styled from "styled-components";
import { Link } from "react-router-dom";
import DateFromNow from "../../DateFromNow";
import { SingleContributor } from "../changesets";
import { DateInput } from "../../useDateFormatter";
import { Repository, AnnotatedLine } from "@scm-manager/ui-types";
import AuthorImage from "./AuthorImage";
import { Action } from "./actions";
import { useTranslation } from "react-i18next";

const PopoverContainer = styled.div`
  position: absolute;
  left: 2.25em;
  z-index: 100;
  width: 30em;
  display: block;

  &:before {
    position: absolute;
    content: "";
    border-style: solid;
    pointer-events: none;
    height: 0;
    width: 0;
    top: 100%;
    left: 5.5em;
    border-color: transparent;
    border-bottom-color: var(--scm-popover-border-color);
    border-left-color: var(--scm-popover-border-color);
    border-width: 0.4rem;
    margin-left: -0.4rem;
    margin-top: -0.4rem;
    -webkit-transform-origin: center;
    transform-origin: center;
    box-shadow: -1px 1px 2px rgba(10, 10, 10, 0.2);
    transform: rotate(-45deg);
  }
`;

const PopoverHeading = styled.div`
  height: 1.5em;
`;

const PopoverDescription = styled.p`
  overflow-wrap: break-word;
`;

const shortRevision = (revision: string) => {
  if (revision.length > 7) {
    return revision.substring(0, 7);
  }
  return revision;
};

type PopoverProps = {
  annotation: AnnotatedLine;
  offsetTop?: number;
  repository: Repository;
  baseDate?: DateInput;
  dispatch: Dispatch<Action>;
};

const AnnotatePopover: FC<PopoverProps> = ({ annotation, offsetTop, repository, baseDate, dispatch }) => {
  const [t] = useTranslation("repos");
  const [height, setHeight] = useState(125);
  const ref = useRef<HTMLDivElement>(null);
  useLayoutEffect(() => {
    if (ref.current) {
      setHeight(ref.current.clientHeight);
    }
  }, [ref]);

  const onMouseEnter = () => {
    dispatch({
      type: "enter-popover",
    });
  };

  const OnMouseLeave = () => {
    dispatch({
      type: "leave-popover",
    });
  };

  const top = (offsetTop || 0) - height - 5;
  return (
    <PopoverContainer
      ref={ref}
      onMouseEnter={onMouseEnter}
      onMouseLeave={OnMouseLeave}
      className="popover box"
      style={{ top: `${top}px` }}
    >
      <PopoverHeading className="is-clearfix">
        <span className="is-pulled-left">
          <AuthorImage person={annotation.author} />
          <SingleContributor person={annotation.author} displayTextOnly={true} />
        </span>
        <DateFromNow className="is-pulled-right" date={annotation.when} baseDate={baseDate} />
      </PopoverHeading>
      <hr className="my-2" />
      <p>
        {t("changeset.label") + " "}
        <Link to={`/repo/${repository.namespace}/${repository.name}/code/changeset/${annotation.revision}`}>
          {shortRevision(annotation.revision)}
        </Link>
      </p>
      <PopoverDescription className="content mt-2">{annotation.description}</PopoverDescription>
    </PopoverContainer>
  );
};

export default AnnotatePopover;