import { utils } from "./utils.js";

function getCurrentLineString(element) {
  const selection = window.getSelection();
  const range = selection.getRangeAt(0);
  const node = range.startContainer;
  const offset = range.startOffset;

  // If the selection is inside a text node
  if (node.nodeType === Node.TEXT_NODE) {
    const text = node.textContent;
    const lineStart = text.lastIndexOf('\n', offset) + 1;
    const lineEnd = text.indexOf('\n', offset);
    const line = lineEnd === -1 ? text.slice(lineStart) : text.slice(lineStart, lineEnd);
    return line;
  }

  // If the selection is inside an element node
  const walker = document.createTreeWalker(element, NodeFilter.SHOW_TEXT);
  let currentNode, currentLine = '';

  while (currentNode = walker.nextNode()) {
    const text = currentNode.textContent;
    const lines = text.split('\n');

    for (let i = 0; i < lines.length; i++) {
      if (range.intersectsNode(currentNode)) {
        currentLine = lines[i];
        break;
      }
    }

    if (currentLine !== '') {
      break;
    }
  }

  return currentLine;
}






function createLastButton(cmd, name = cmd, onclick = console.log,style={}) {
  const button = document.createElement('button');

  button.className = 'toastui-editor-toolbar-icons last';
  button.style.backgroundImage = 'none';
  button.style.margin = style.margin || '0';
  button.style.fontSize = style.fontSize || 'x-large';
  button.innerHTML = `${name}`;
  button.addEventListener('click', () => {
    onclick();
    editor.exec(cmd || '');
  });

  return button;
}

let editorContainer = document.querySelector('#notebin_editor');
window.tuieditor = window.editor = new toastui.Editor({
  el: document.querySelector('#notebin_editor'),
  previewStyle: 'tab',
  height: window.innerHeight * 0.8 + 'px',
  initialValue: '\n\n\n\n\n\n',
  customHTMLSanitizer: html => html,
  toolbarItems: [
    [{
      el: createLastButton('undo', '⤺'),
      command: 'undo',
      tooltip: 'Undo'
    },
    {
      el: createLastButton('redo', '⤻'),
      command: 'redo',
      tooltip: 'Redo'
    },
    {
      el: createLastButton('', 'wrap', () => {
        const element = document.querySelector('.ProseMirror');
        if (element.style.overflowX === 'auto' && element.style.whiteSpace === 'nowrap') {
          element.style.overflowX = '';
          element.style.whiteSpace = '';
        } else {
          element.style.overflowX = 'auto';
          element.style.whiteSpace = 'nowrap';
        }

      },
      {
        fontSize: 'medium'
      }
    ),
      
      command: 'wrap',
      tooltip: 'wrap'
    }
    ],
    ['heading'],
    //[ 'bold', 'italic', 'strike'],
    //   ['hr', 'quote'],
    //   ['ul', 'ol', 'task', 'indent', 'outdent'],
    //    ['table', 'image', 'link'],
    ['image'],
    ['code', 'codeblock'],

  ],
});

setTimeout(() => {

  // tuieditor.focus();
  tuieditor.moveCursorToStart(true);

  window.tuieditor.mdEditor.el.addEventListener('focus', (event) => {
    // Log the event and the pasted data
    console.log('focus event triggered:', event);
    syncNote();
  });


  window.tuieditor.mdEditor.el.addEventListener('keydown', function (event) {
    if (event.key === 'Enter' && event.ctrlKey) {
      // Your code here
      let currentLineString = getCurrentLineString(editorContainer);
      console.log('Ctrl + Enter was pressed:', currentLineString);
      let prompt = ' ';
      let selectText = window.getSelection().toString();
      utils.displayMarkdown(`${prompt} **${selectText.length >= 1 ? selectText : currentLineString}** ...`);
      utils.AIComplete(`${prompt} **${selectText.length >= 1 ? selectText : currentLineString}** `);
    }
  });

  document.body.addEventListener('keydown', event => {
    if (event.key === 'Enter' && event.ctrlKey) {
      // Your code here
      tuieditor.mdEditor.focus();

      console.log('body Ctrl + Enter was pressed:');
    }
  });

  let url_div = document.querySelector('#url_div');
  url_div.innerText = window.location.href;
  url_div.addEventListener('pointerdown', () => {
    const text = url_div.textContent;
    navigator.clipboard.writeText(text);
    utils.showToast('copyed url to clipboard');
  })


}, 1000);



//   editor.insertToolbarItem({ groupIndex: 0, itemIndex: 0 }, {
//     name: 'myItem',
//     tooltip: 'Custom Button',
//     command: 'bold',
//     text: '@',
//     className: 'toastui-editor-toolbar-icons first',
//     style: { backgroundImage: 'none' }
//   });


let editorModel = {
  value: null,
  lastChangeTime: 0,
  noteid: ''
}


// Create a new custom event
const editorchange = new CustomEvent('editorchange', {
  detail: {
    // Include any data you want to pass with the event
    message: 'Editor content has changed'
  },
  bubbles: true,
  cancelable: true
});

document.addEventListener('editorchange', () => {
  console.log('editorchange');
  editorModel.lastChangeTime = Date.now();
  syncNote();

})

let setChangeTimeoutid = 0;
document.addEventListener('keydown', () => {
  console.log('keydown');
  clearTimeout(setChangeTimeoutid);
  setChangeTimeoutid = setTimeout(() => {
    document.body.dispatchEvent(editorchange)

  }, 5000);

})

document.body.addEventListener('paste', (event) => {
  // Log the event and the pasted data
  console.log('Paste event triggered:', event);
  console.log('Pasted data:', event.clipboardData.getData('text'));
  document.body.dispatchEvent(editorchange)

});

document.body.addEventListener('pointerdown', (event) => {
  // Log the event and the pasted data
  console.log('pointerdown event triggered:', event);
  syncNote();
});





function getUrlParameter(name) {
  name = name.replace(/[\[]/, '\\[').replace(/[\]]/, '\\]');
  var regex = new RegExp('[\\?&]' + name + '=([^&#]*)');
  var results = regex.exec(location.search);
  return results === null ? '' : decodeURIComponent(results[1].replace(/\+/g, ' '));
}

function setUrlParameter(paramName, paramValue) {
  const url = new URL(window.location.href);
  url.searchParams.set(paramName, paramValue);
  history.pushState({}, "", url);
}

let noteid = getUrlParameter('noteid');
console.log(noteid);



async function initEditorModel() {
  editorModel.noteid = getUrlParameter('noteid') || Date.now();
  setUrlParameter('noteid', editorModel.noteid);
  console.log('initEditorModel', editorModel);
  getNote();

}


initEditorModel();


setInterval(async () => {
  // saveNote();
}, 3000)


async function getNote() {
  let res = await fetch(`/kv/get?key=${editorModel.noteid}`);
  res = await res.json();
  console.log('getNote:', res);
  if (res) {
    res = res.value;
    editorModel.value = res.text;
    editorModel.lastChangeTime = res.lastChangeTime || 0;
    tuieditor.setMarkdown(res.text)
  }
}

async function saveNote() {
  let form = new FormData();
  form.append('key', noteid);
  form.append('value', JSON.stringify({
    text: tuieditor.getMarkdown(),
    lastChangeTime: editorModel.lastChangeTime
  }))

  await fetch('/kv/set',
    {
      method: 'post',
      body: form
    }
  )
  console.log('note saved')

}


async function syncNote() {
  try {
    let res = await fetch(`/kv/get?key=${editorModel.noteid}`);
    res = await res.json();
    console.log('getNote in syncNote:', res);
    if (res) {
      res = res.value;
      if (res.lastChangeTime > editorModel.lastChangeTime) {
        console.log(res.lastChangeTime, editorModel.lastChangeTime);
        editorModel.value = res.text;
        editorModel.lastChangeTime = res.lastChangeTime || 0;
        tuieditor.setMarkdown(res.text);

      }
      else {
        saveNote();
      }
    }

  } catch (error) {
    console.log('syncNote eroor:', error);
    saveNote();
  }

}