//@flow
import React from "react";
import { translate } from "react-i18next";
import classNames from "classnames";
import styled from "styled-components";
import type { Plugin } from "@scm-manager/ui-types";
import {
  apiClient,
  Button,
  ButtonGroup,
  Checkbox,
  ErrorNotification,
  Modal,
  Notification
} from "@scm-manager/ui-components";
import waitForRestart from "./waitForRestart";
import SuccessNotification from "./SuccessNotification";
import { PluginAction } from "./PluginEntry";

type Props = {
  plugin: Plugin,
  pluginAction: string,
  refresh: () => void,
  onClose: () => void,

  // context props
  t: (key: string, params?: Object) => string
};

type State = {
  success: boolean,
  restart: boolean,
  loading: boolean,
  error?: Error
};

const ListParent = styled.div`
  margin-right: 0;
  min-width: ${props =>
    props.pluginAction === PluginAction.INSTALL ? "5.5em" : "10em"};
  text-align: left;
`;

const ListChild = styled.div`
  flex-grow: 4;
`;

class PluginModal extends React.Component<Props, State> {
  constructor(props: Props) {
    super(props);
    this.state = {
      loading: false,
      restart: false,
      success: false
    };
  }

  onSuccess = () => {
    const { restart } = this.state;
    const { refresh, onClose } = this.props;

    const newState = {
      loading: false,
      error: undefined
    };

    if (restart) {
      waitForRestart()
        .then(() => {
          this.setState({
            ...newState,
            success: true
          });
        })
        .catch(error => {
          this.setState({
            loading: false,
            success: false,
            error
          });
        });
    } else {
      this.setState(newState, () => {
        refresh();
        onClose();
      });
    }
  };

  createPluginActionLink = () => {
    const { plugin, pluginAction } = this.props;
    const { restart } = this.state;

    let pluginActionLink = "";

    if (pluginAction === PluginAction.INSTALL) {
      pluginActionLink = plugin._links.install.href;
    } else if (pluginAction === PluginAction.UPDATE) {
      pluginActionLink = plugin._links.update.href;
    } else if (pluginAction === PluginAction.UNINSTALL) {
      pluginActionLink = plugin._links.uninstall.href;
    }
    return pluginActionLink + "?restart=" + restart.toString();
  };

  handlePluginAction = (e: Event) => {
    this.setState({
      loading: true
    });
    e.preventDefault();
    apiClient
      .post(this.createPluginActionLink())
      .then(this.onSuccess)
      .catch(error => {
        this.setState({
          loading: false,
          success: false,
          error: error
        });
      });
  };

  footer = () => {
    const { pluginAction, onClose, t } = this.props;
    const { loading, error, restart, success } = this.state;

    let color = pluginAction === PluginAction.UNINSTALL ? "warning" : "primary";
    let label = `plugins.modal.${pluginAction}`;
    if (restart) {
      color = "warning";
      label = `plugins.modal.${pluginAction}AndRestart`;
    }
    return (
      <ButtonGroup>
        <Button
          label={t(label)}
          color={color}
          action={this.handlePluginAction}
          loading={loading}
          disabled={!!error || success}
        />
        <Button label={t("plugins.modal.abort")} action={onClose} />
      </ButtonGroup>
    );
  };

  renderDependencies() {
    const { plugin, t } = this.props;

    let dependencies = null;
    if (plugin.dependencies && plugin.dependencies.length > 0) {
      dependencies = (
        <div className="media">
          <Notification type="warning">
            <strong>{t("plugins.modal.dependencyNotification")}</strong>
            <ul>
              {plugin.dependencies.map((dependency, index) => {
                return <li key={index}>{dependency}</li>;
              })}
            </ul>
          </Notification>
        </div>
      );
    }
    return dependencies;
  }

  renderNotifications = () => {
    const { t } = this.props;
    const { restart, error, success } = this.state;
    if (error) {
      return (
        <div className="media">
          <ErrorNotification error={error} />
        </div>
      );
    } else if (success) {
      return (
        <div className="media">
          <SuccessNotification />
        </div>
      );
    } else if (restart) {
      return (
        <div className="media">
          <Notification type="warning">
            {t("plugins.modal.restartNotification")}
          </Notification>
        </div>
      );
    }
    return null;
  };

  handleRestartChange = (value: boolean) => {
    this.setState({
      restart: value
    });
  };

  render() {
    const { restart } = this.state;
    const { plugin, pluginAction, onClose, t } = this.props;

    const body = (
      <>
        <div className="media">
          <div className="media-content">
            <p>{plugin.description}</p>
          </div>
        </div>
        <div className="media">
          <div className="media-content">
            <div className="field is-horizontal">
              <ListParent
                className={classNames("field-label", "is-inline-flex")}
                pluginAction={pluginAction}
              >
                {t("plugins.modal.author")}:
              </ListParent>
              <ListChild className={classNames("field-body", "is-inline-flex")}>
                {plugin.author}
              </ListChild>
            </div>
            {pluginAction === PluginAction.INSTALL && (
              <div className="field is-horizontal">
                <ListParent
                  className={classNames("field-label", "is-inline-flex")}
                  pluginAction={pluginAction}
                >
                  {t("plugins.modal.version")}:
                </ListParent>
                <ListChild
                  className={classNames("field-body", "is-inline-flex")}
                >
                  {plugin.version}
                </ListChild>
              </div>
            )}
            {(pluginAction === PluginAction.UPDATE ||
              pluginAction === PluginAction.UNINSTALL) && (
              <div className="field is-horizontal">
                <ListParent
                  className={classNames("field-label", "is-inline-flex")}
                >
                  {t("plugins.modal.currentVersion")}:
                </ListParent>
                <ListChild
                  className={classNames("field-body", "is-inline-flex")}
                >
                  {plugin.version}
                </ListChild>
              </div>
            )}
            {pluginAction === PluginAction.UPDATE && (
              <div className="field is-horizontal">
                <ListParent
                  className={classNames("field-label", "is-inline-flex")}
                >
                  {t("plugins.modal.newVersion")}:
                </ListParent>
                <ListChild
                  className={classNames("field-body", "is-inline-flex")}
                >
                  {plugin.newVersion}
                </ListChild>
              </div>
            )}
            {this.renderDependencies()}
          </div>
        </div>
        <div className="media">
          <div className="media-content">
            <Checkbox
              checked={restart}
              label={t("plugins.modal.restart")}
              onChange={this.handleRestartChange}
              disabled={false}
            />
          </div>
        </div>
        {this.renderNotifications()}
      </>
    );

    return (
      <Modal
        title={t(`plugins.modal.title.${pluginAction}`, {
          name: plugin.displayName ? plugin.displayName : plugin.name
        })}
        closeFunction={() => onClose()}
        body={body}
        footer={this.footer()}
        active={true}
      />
    );
  }
}

export default translate("admin")(PluginModal);