import React from 'react';
import PropTypes from 'prop-types';
import { Button, Modal, ModalHeader, Input, ModalBody, ModalFooter, Form, FormGroup, Label, Alert } from 'reactstrap';
import { gettext } from '../../utils/constants';
import { Utils, validateName } from '../../utils/utils';

const propTypes = {
  fileType: PropTypes.string,
  parentPath: PropTypes.string.isRequired,
  onAddFile: PropTypes.func.isRequired,
  checkDuplicatedName: PropTypes.func.isRequired,
  toggleDialog: PropTypes.func.isRequired,
};

class CreateFile extends React.Component {
  constructor(props) {
    super(props);
    const { fileType = '' } = props;
    this.state = {
      parentPath: '',
      childName: fileType,
      errMessage: '',
      isSubmitBtnActive: this.isSdocSuffix(fileType) ? true : false,
    };
    this.newInput = React.createRef();
  }

  componentDidMount() {
    let parentPath = this.props.parentPath;
    if (parentPath[parentPath.length - 1] === '/') { // mainPanel
      this.setState({ parentPath: parentPath });
    } else {
      this.setState({ parentPath: parentPath + '/' }); // sidePanel
    }
  }

  isSdocSuffix = (name) => {
    return name.endsWith('.sdoc');
  };

  handleChange = (e) => {
    if (!e.target.value.trim()) {
      this.setState({ isSubmitBtnActive: false });
    } else {
      this.setState({ isSubmitBtnActive: true });
    }

    this.setState({
      childName: e.target.value,
    }) ;
  };

  handleSubmit = () => {
    if (!this.state.isSubmitBtnActive) {
      return;
    }
    let newName = this.state.childName.trim();
    let { isValid, errMessage } = validateName(newName);
    if (!isValid) {
      this.setState({ errMessage });
      return;
    }
    let isDuplicated = this.props.checkDuplicatedName(newName);
    if (isDuplicated) {
      let errMessage = gettext('The name "{name}" is already taken. Please choose a different name.');
      errMessage = errMessage.replace('{name}', Utils.HTMLescape(newName));
      this.setState({ errMessage });
      return;
    }
    this.props.onAddFile(this.state.parentPath + newName);
    this.props.toggleDialog();
  };

  handleKeyDown = (e) => {
    if (e.key === 'Enter') {
      this.handleSubmit();
      e.preventDefault();
    }
  };

  onAfterModelOpened = () => {
    if (!this.newInput.current) return;
    this.newInput.current.focus();
    this.newInput.current.setSelectionRange(0, 0);
  };

  render() {
    const { toggleDialog } = this.props;
    return (
      <Modal isOpen={true} toggle={toggleDialog} onOpened={this.onAfterModelOpened}>
        <ModalHeader toggle={toggleDialog}>{gettext('New File')}</ModalHeader>
        <ModalBody>
          <Form>
            <FormGroup>
              <Label for="fileName">{gettext('Name')}</Label>
              <Input
                id="fileName"
                onKeyDown={this.handleKeyDown}
                innerRef={this.newInput}
                value={this.state.childName}
                onChange={this.handleChange}
              />
            </FormGroup>
          </Form>
          {this.state.errMessage && <Alert color="danger" className="mt-2">{this.state.errMessage}</Alert>}
        </ModalBody>
        <ModalFooter>
          <Button color="secondary" onClick={toggleDialog}>{gettext('Cancel')}</Button>
          <Button color="primary" onClick={this.handleSubmit} disabled={!this.state.isSubmitBtnActive}>{gettext('Submit')}</Button>
        </ModalFooter>
      </Modal>
    );
  }
}

CreateFile.propTypes = propTypes;

export default CreateFile;