import React from "react";
import classNames from 'classnames';
import {RetinaImg} from 'nylas-component-kit';
import {
  Actions,
  TaskFactory,
  AccountStore,
  CategoryStore,
  FocusedContentStore,
  FocusedPerspectiveStore,
} from "nylas-exports";

import ThreadListStore from './thread-list-store';


export class ArchiveButton extends React.Component {
  static displayName = 'ArchiveButton';
  static containerRequired = false;

  static propTypes = {
    items: React.PropTypes.array.isRequired,
  }

  _onArchive = (event) => {
    const tasks = TaskFactory.tasksForArchiving({threads: this.props.items})
    Actions.queueTasks(tasks);
    Actions.popSheet();
    event.stopPropagation();
    return;
  }

  render() {
    const allowed = FocusedPerspectiveStore.current().canArchiveThreads(this.props.items);
    if (!allowed) {
      return <span />;
    }

    return (
      <button
        tabIndex={-1}
        style={{order: -107}}
        className="btn btn-toolbar"
        title="Archive"
        onClick={this._onArchive}
      >
        <RetinaImg name="toolbar-archive.png" mode={RetinaImg.Mode.ContentIsMask} />
      </button>
    )
  }
}

export class TrashButton extends React.Component {
  static displayName = 'TrashButton'
  static containerRequired = false;

  static propTypes = {
    items: React.PropTypes.array.isRequired,
  }

  _onRemove = (event) => {
    const tasks = TaskFactory.tasksForMovingToTrash({threads: this.props.items});
    Actions.queueTasks(tasks);
    Actions.popSheet();
    event.stopPropagation();
    return;
  }

  render() {
    const allowed = FocusedPerspectiveStore.current().canMoveThreadsTo(this.props.items, 'trash')
    if (!allowed) {
      return <span />;
    }

    return (
      <button
        tabIndex={-1}
        style={{order: -106}}
        className="btn btn-toolbar"
        title="Move to Trash"
        onClick={this._onRemove}
      >
        <RetinaImg name="toolbar-trash.png" mode={RetinaImg.Mode.ContentIsMask} />
      </button>
    );
  }
}

export class MarkAsSpamButton extends React.Component {
  static displayName = 'MarkAsSpamButton';
  static containerRequired = false;

  static propTypes = {
    items: React.PropTypes.array.isRequired,
  }

  _allInSpam() {
    return this.props.items.every(item => item.categories.map(c => c.name).includes('spam'));
  }

  _onNotSpam = (event) => {
    const tasks = TaskFactory.tasksForApplyingCategories({
      threads: this.props.items,
      categoriesToAdd: (accountId) => {
        const account = AccountStore.accountForId(accountId)
        return account.usesFolders() ? [CategoryStore.getInboxCategory(accountId)] : [];
      },
      categoriesToRemove: (accountId) => {
        return [CategoryStore.getSpamCategory(accountId)];
      },
    })
    Actions.queueTasks(tasks);
    Actions.popSheet();
    event.stopPropagation();
    return;
  }

  _onMarkAsSpam = (event) => {
    const tasks = TaskFactory.tasksForMarkingAsSpam({threads: this.props.items});
    Actions.queueTasks(tasks);
    Actions.popSheet();
    event.stopPropagation();
    return;
  }

  render() {
    if (this._allInSpam()) {
      return (
        <button
          tabIndex={-1}
          style={{order: -105}}
          className="btn btn-toolbar"
          title="Not Spam"
          onClick={this._onNotSpam}
        >
          <RetinaImg name="toolbar-not-spam.png" mode={RetinaImg.Mode.ContentIsMask} />
        </button>
      )
    }

    const allowed = FocusedPerspectiveStore.current().canMoveThreadsTo(this.props.items, 'spam');
    if (!allowed) {
      return <span />;
    }
    return (
      <button
        tabIndex={-1}
        style={{order: -105}}
        className="btn btn-toolbar"
        title="Mark as Spam"
        onClick={this._onMarkAsSpam}
      >
        <RetinaImg name="toolbar-spam.png" mode={RetinaImg.Mode.ContentIsMask} />
      </button>
    );
  }
}

export class ToggleStarredButton extends React.Component {
  static displayName = 'ToggleStarredButton';
  static containerRequired = false;

  static propTypes = {
    items: React.PropTypes.array.isRequired,
  };

  _onStar = (event) => {
    const task = TaskFactory.taskForInvertingStarred({threads: this.props.items});
    Actions.queueTask(task);
    event.stopPropagation();
    return;
  }

  render() {
    const postClickStarredState = this.props.items.every((t) => t.starred === false);
    const title = postClickStarredState ? "Star" : "Unstar";
    const imageName = postClickStarredState ? "toolbar-star.png" : "toolbar-star-selected.png"

    return (
      <button
        tabIndex={-1}
        style={{order: -103}}
        className="btn btn-toolbar"
        title={title}
        onClick={this._onStar}
      >
        <RetinaImg name={imageName} mode={RetinaImg.Mode.ContentIsMask} />
      </button>
    );
  }
}

export class ToggleUnreadButton extends React.Component {
  static displayName = 'ToggleUnreadButton';
  static containerRequired = false;

  static propTypes = {
    items: React.PropTypes.array.isRequired,
  }

  _onClick = (event) => {
    const task = TaskFactory.taskForInvertingUnread({threads: this.props.items});
    Actions.queueTask(task);
    Actions.popSheet();
    event.stopPropagation();
    return;
  }

  render() {
    const postClickUnreadState = this.props.items.every(t => t.unread === false);
    const fragment = postClickUnreadState ? "unread" : "read";

    return (
      <button
        tabIndex={-1}
        style={{order: -104}}
        className="btn btn-toolbar"
        title={`Mark as ${fragment}`}
        onClick={this._onClick}
      >
        <RetinaImg
          name={`toolbar-markas${fragment}.png`}
          mode={RetinaImg.Mode.ContentIsMask}
        />
      </button>
    );
  }
}

class ThreadArrowButton extends React.Component {
  static propTypes = {
    getStateFromStores: React.PropTypes.func,
    direction: React.PropTypes.string,
    command: React.PropTypes.string,
    title: React.PropTypes.string,
  }

  constructor(props) {
    super(props);
    this.state = this.props.getStateFromStores();
  }

  componentDidMount() {
    this._unsubscribe = ThreadListStore.listen(this._onStoreChange);
    this._unsubscribe_focus = FocusedContentStore.listen(this._onStoreChange);
  }

  componentWillUnmount() {
    this._unsubscribe();
    this._unsubscribe_focus();
  }

  _onClick = () => {
    if (this.state.disabled) {
      return;
    }
    NylasEnv.commands.dispatch(this.props.command);
    return;
  }

  _onStoreChange = () => {
    this.setState(this.props.getStateFromStores());
  }

  render() {
    const {direction, title} = this.props;
    const classes = classNames({
      "btn-icon": true,
      "message-toolbar-arrow": true,
      "disabled": this.state.disabled,
    });

    return (
      <div className={`${classes} ${direction}`} onClick={this._onClick} title={title}>
        <RetinaImg name={`toolbar-${direction}-arrow.png`} mode={RetinaImg.Mode.ContentIsMask} />
      </div>
    );
  }
}

export const DownButton = () => {
  const getStateFromStores = () => {
    const selectedId = FocusedContentStore.focusedId('thread');
    const lastIndex = ThreadListStore.dataSource().count() - 1
    const lastItem = ThreadListStore.dataSource().get(lastIndex);
    return {
      disabled: (lastItem && lastItem.id === selectedId),
    };
  }

  return (
    <ThreadArrowButton
      getStateFromStores={getStateFromStores}
      direction={"down"}
      title={"Next thread"}
      command={'core:next-item'}
    />
  );
}
DownButton.displayName = 'DownButton';
DownButton.containerRequired = false;

export const UpButton = () => {
  const getStateFromStores = () => {
    const selectedId = FocusedContentStore.focusedId('thread');
    const item = ThreadListStore.dataSource().get(0)
    return {
      disabled: (item && item.id === selectedId),
    };
  }

  return (
    <ThreadArrowButton
      getStateFromStores={getStateFromStores}
      direction={"up"}
      title={"Previous thread"}
      command={'core:previous-item'}
    />
  );
}
UpButton.displayName = 'UpButton';
UpButton.containerRequired = false;