// @flow
import { observable } from "mobx";
import { observer, inject } from "mobx-react";
import * as React from "react";
import styled from "styled-components";

import AuthStore from "stores/AuthStore";
import UiStore from "stores/UiStore";
import UserDelete from "scenes/UserDelete";
import Button from "components/Button";
import CenteredContent from "components/CenteredContent";
import Flex from "components/Flex";
import Input, { LabelText } from "components/Input";
import PageTitle from "components/PageTitle";
import ImageUpload from "./components/ImageUpload";

type Props = {
  auth: AuthStore,
  ui: UiStore,
};

@observer
class Profile extends React.Component<Props> {
  timeout: TimeoutID;
  form: ?HTMLFormElement;

  @observable name: string;
  @observable avatarUrl: ?string;
  @observable showDeleteModal: boolean = false;

  componentDidMount() {
    if (this.props.auth.user) {
      this.name = this.props.auth.user.name;
    }
  }

  componentWillUnmount() {
    clearTimeout(this.timeout);
  }

  handleSubmit = async (ev: SyntheticEvent<>) => {
    ev.preventDefault();

    await this.props.auth.updateUser({
      name: this.name,
      avatarUrl: this.avatarUrl,
    });
    this.props.ui.showToast("Profile saved");
  };

  handleNameChange = (ev: SyntheticInputEvent<*>) => {
    this.name = ev.target.value;
  };

  handleAvatarUpload = async (avatarUrl: string) => {
    this.avatarUrl = avatarUrl;

    await this.props.auth.updateUser({
      avatarUrl: this.avatarUrl,
    });
    this.props.ui.showToast("Profile picture updated");
  };

  handleAvatarError = (error: ?string) => {
    this.props.ui.showToast(error || "Unable to upload new avatar");
  };

  toggleDeleteAccount = () => {
    this.showDeleteModal = !this.showDeleteModal;
  };

  get isValid() {
    return this.form && this.form.checkValidity();
  }

  render() {
    const { user, isSaving } = this.props.auth;
    if (!user) return null;
    const avatarUrl = this.avatarUrl || user.avatarUrl;

    return (
      <CenteredContent>
        <PageTitle title="Profile" />
        <h1>Profile</h1>
        <ProfilePicture column>
          <LabelText>Photo</LabelText>
          <AvatarContainer>
            <ImageUpload
              onSuccess={this.handleAvatarUpload}
              onError={this.handleAvatarError}
            >
              <Avatar src={avatarUrl} />
              <Flex auto align="center" justify="center">
                Upload
              </Flex>
            </ImageUpload>
          </AvatarContainer>
        </ProfilePicture>
        <form onSubmit={this.handleSubmit} ref={(ref) => (this.form = ref)}>
          <Input
            label="Full name"
            autoComplete="name"
            value={this.name}
            onChange={this.handleNameChange}
            required
            short
          />
          <Button type="submit" disabled={isSaving || !this.isValid}>
            {isSaving ? "Saving…" : "Save"}
          </Button>
        </form>

        <DangerZone>
          <LabelText>Delete Account</LabelText>
          <p>
            You may delete your account at any time, note that this is
            unrecoverable.{" "}
            <a onClick={this.toggleDeleteAccount}>Delete account</a>.
          </p>
        </DangerZone>
        {this.showDeleteModal && (
          <UserDelete onRequestClose={this.toggleDeleteAccount} />
        )}
      </CenteredContent>
    );
  }
}

const DangerZone = styled.div`
  background: ${(props) => props.theme.background};
  transition: ${(props) => props.theme.backgroundTransition};
  position: absolute;
  bottom: 16px;
`;

const ProfilePicture = styled(Flex)`
  margin-bottom: 24px;
`;

const avatarStyles = `
  width: 80px;
  height: 80px;
  border-radius: 8px;
`;

const AvatarContainer = styled(Flex)`
  ${avatarStyles};
  position: relative;

  div div {
    ${avatarStyles};
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    opacity: 0;
    cursor: pointer;
    transition: all 250ms;
  }

  &:hover div {
    opacity: 1;
    background: rgba(0, 0, 0, 0.75);
    color: ${(props) => props.theme.white};
  }
`;

const Avatar = styled.img`
  ${avatarStyles};
`;

export default inject("auth", "ui")(Profile);