// @flow
/* global document */

export default ({
  onCommit,
  maxLength = -1,
  state = {}
}: {
  state?: {
    originalValue?: string
  },
  maxLength: number,
  onCommit: (value: string) => void
}) => ({
  suppressContentEditableWarning: true,
  contentEditable: 'plaintext-only',

  onFocus: (e: Object) => {
    state.originalValue = e.target.innerText;
  },

  onKeyDown: (e: Object) => {
    if (e.keyCode === 13) {
      e.preventDefault();
      return e.target.blur();
    }
    if (e.keyCode === 27) {
      e.target.innerText = state.originalValue;
      e.preventDefault();
      return e.target.blur();
    }
  },

  onBlur: (e: Object) => {
    if (e.target.innerText) {
      if (onCommit && e.target.innerText !== state.originalValue) {
        onCommit(e.target.innerText);
      }
    } else {
      e.target.innerText = state.originalValue;
    }
  },

  onKeyPress: (e: Object) => {
    if (maxLength > -1 && (e.target.innerText || '').length >= maxLength) {
      return e.preventDefault();
    }
  },

  onPaste: (e: Object) => {
    e.preventDefault();
    const clipboard = e.clipboardData.getData('text');
    const text = clipboard && clipboard.replace(/\n/g, '');
    if (text) {
      const pasteLen = Math.max(0, maxLength - (e.target.innerText || '').length);
      const pasteText = maxLength > -1 ? pasteLen > 0 && text.substr(0, pasteLen) : text;
      if (pasteText) {
        document.execCommand('insertText', false, pasteText);
      }
    }
  }
});

// <div {...editable({ maxLength: 10, onCommit: value => console.log('new value', value)}>content to edit</div>