{{ define "fragments/resizable" }}
  <script>
    class ResizablePanel {
      constructor(resizerElement) {
        this.resizer = resizerElement;
        this.isResizing = false;
        this.type = resizerElement.dataset.resizer;
        this.targetId = resizerElement.dataset.target;
        this.target = document.getElementById(this.targetId);
        this.min = parseInt(resizerElement.dataset.min) || 100;
        this.max = parseInt(resizerElement.dataset.max) || Infinity;

        this.direction = resizerElement.dataset.direction || 'before'; // 'before' or 'after'

        this.handleMouseDown = this.handleMouseDown.bind(this);
        this.handleMouseMove = this.handleMouseMove.bind(this);
        this.handleMouseUp = this.handleMouseUp.bind(this);
        this.handleDoubleClick = this.handleDoubleClick.bind(this);

        this.init();
      }

      init() {
        this.resizer.addEventListener('mousedown', this.handleMouseDown);
        this.resizer.addEventListener('dblclick', this.handleDoubleClick);
      }

      handleMouseDown(e) {
        e.preventDefault();
        this.isResizing = true;
        this.resizer.classList.add('resizing');
        document.body.style.cursor = this.type === 'vertical' ? 'col-resize' : 'row-resize';
        document.body.style.userSelect = 'none';

        this.startX = e.clientX;
        this.startY = e.clientY;
        this.startWidth = this.target.offsetWidth;
        this.startHeight = this.target.offsetHeight;

        document.addEventListener('mousemove', this.handleMouseMove);
        document.addEventListener('mouseup', this.handleMouseUp);
      }

      handleMouseMove(e) {
        if (!this.isResizing) return;

        if (this.type === 'vertical') {
          let newWidth;

          if (this.direction === 'after') {
            const deltaX = this.startX - e.clientX;
            newWidth = this.startWidth + deltaX;
          } else {
            const deltaX = e.clientX - this.startX;
            newWidth = this.startWidth + deltaX;
          }

          if (newWidth >= this.min && newWidth <= this.max) {
            this.target.style.width = newWidth + 'px';
            this.target.style.flexShrink = '0';
          }
        } else {
          let newHeight;

          if (this.direction === 'after') {
            const deltaY = this.startY - e.clientY;
            newHeight = this.startHeight + deltaY;
          } else {
            const deltaY = e.clientY - this.startY;
            newHeight = this.startHeight + deltaY;
          }

          if (newHeight >= this.min && newHeight <= this.max) {
            this.target.style.height = newHeight + 'px';
          }
        }
      }

      handleMouseUp() {
        if (!this.isResizing) return;

        this.isResizing = false;
        this.resizer.classList.remove('resizing');
        document.body.style.cursor = '';
        document.body.style.userSelect = '';

        document.removeEventListener('mousemove', this.handleMouseMove);
        document.removeEventListener('mouseup', this.handleMouseUp);
      }

      handleDoubleClick(e) {
        e.preventDefault();
        this.target.style.width = '';
        this.target.style.flexShrink = '';
      }

      destroy() {
        this.resizer.removeEventListener('mousedown', this.handleMouseDown);
        this.resizer.removeEventListener('dblclick', this.handleDoubleClick);
        document.removeEventListener('mousemove', this.handleMouseMove);
        document.removeEventListener('mouseup', this.handleMouseUp);
      }
    }

    function initializeResizers() {
      const resizers = document.querySelectorAll('[data-resizer]');
      const instances = [];

      resizers.forEach(resizer => {
        instances.push(new ResizablePanel(resizer));
      });

      return instances;
    }

    if (document.readyState === 'loading') {
      document.addEventListener('DOMContentLoaded', initializeResizers);
    } else {
      initializeResizers();
    }
  </script>
{{ end }}
