var __typeError = (msg) => {
  throw TypeError(msg);
};
var __accessCheck = (obj, member, msg) => member.has(obj) || __typeError("Cannot " + msg);
var __privateGet = (obj, member, getter) => (__accessCheck(obj, member, "read from private field"), getter ? getter.call(obj) : member.get(obj));
var __privateAdd = (obj, member, value) => member.has(obj) ? __typeError("Cannot add the same private member more than once") : member instanceof WeakSet ? member.add(obj) : member.set(obj, value);
var __privateSet = (obj, member, value, setter) => (__accessCheck(obj, member, "write to private field"), setter ? setter.call(obj, value) : member.set(obj, value), value);
var __privateMethod = (obj, member, method) => (__accessCheck(obj, member, "access private method"), method);
var _data, _Kanban_instances, render_fn, initDragAndDrop_fn, moveItem_fn;
class Kanban extends HTMLElement {
  constructor() {
    super();
    __privateAdd(this, _Kanban_instances);
    __privateAdd(this, _data, []);
    this.attachShadow({ mode: "open" });
  }
  connectedCallback() {
    __privateMethod(this, _Kanban_instances, render_fn).call(this);
  }
  get data() {
    return __privateGet(this, _data);
  }
  set data(value) {
    __privateSet(this, _data, value);
    __privateMethod(this, _Kanban_instances, render_fn).call(this);
  }
}
_data = new WeakMap();
_Kanban_instances = new WeakSet();
render_fn = function() {
  const style = `
      :host {
        display: flex;
        gap: 16px;
        padding: 16px;
        overflow-x: auto;
        font-family: system-ui, -apple-system, sans-serif;
      }
      .column {
        background: #f1f2f4;
        border-radius: 8px;
        width: 280px;
        min-width: 280px;
        display: flex;
        flex-direction: column;
        max-height: 100%;
      }
      .column-header {
        padding: 12px;
        font-weight: bold;
        display: flex;
        justify-content: space-between;
        align-items: center;
      }
      .items-container {
        flex: 1;
        padding: 8px;
        min-height: 50px;
      }
      .item {
        background: white;
        border-radius: 4px;
        padding: 12px;
        margin-bottom: 8px;
        box-shadow: 0 1px 3px rgba(0,0,0,0.1);
        cursor: grab;
      }
      .item:active {
        cursor: grabbing;
      }
      .item.dragging {
        opacity: 0.5;
      }
      .items-container.drag-over {
        background: rgba(0,0,0,0.05);
      }
    `;
  this.shadowRoot.innerHTML = `
      <style>${style}</style>
      ${__privateGet(this, _data).map((col) => `
        <div class="column" data-id="${col.id}">
          <div class="column-header">
            <span>${col.title}</span>
          </div>
          <div class="items-container" data-column-id="${col.id}">
            ${(col.items || []).map((item) => `
              <div class="item" draggable="true" data-id="${item.id}" data-column-id="${col.id}">
                ${item.content}
              </div>
            `).join("")}
          </div>
        </div>
      `).join("")}
    `;
  __privateMethod(this, _Kanban_instances, initDragAndDrop_fn).call(this);
};
initDragAndDrop_fn = function() {
  const items = this.shadowRoot.querySelectorAll(".item");
  const containers = this.shadowRoot.querySelectorAll(".items-container");
  items.forEach((item) => {
    item.addEventListener("dragstart", (e) => {
      item.classList.add("dragging");
      e.dataTransfer.setData("text/plain", JSON.stringify({
        itemId: item.dataset.id,
        fromColumnId: item.dataset.columnId
      }));
    });
    item.addEventListener("dragend", () => {
      item.classList.remove("dragging");
    });
  });
  containers.forEach((container) => {
    container.addEventListener("dragover", (e) => {
      e.preventDefault();
      container.classList.add("drag-over");
    });
    container.addEventListener("dragleave", () => {
      container.classList.remove("drag-over");
    });
    container.addEventListener("drop", (e) => {
      e.preventDefault();
      container.classList.remove("drag-over");
      const dragData = JSON.parse(e.dataTransfer.getData("text/plain"));
      __privateMethod(this, _Kanban_instances, moveItem_fn).call(this, dragData.itemId, dragData.fromColumnId, container.dataset.columnId);
    });
  });
};
moveItem_fn = function(itemId, fromColumnId, toColumnId) {
  if (fromColumnId === toColumnId) return;
  const fromCol = __privateGet(this, _data).find((c) => c.id === fromColumnId);
  const toCol = __privateGet(this, _data).find((c) => c.id === toColumnId);
  const itemIndex = fromCol.items.findIndex((i) => i.id === itemId);
  const [item] = fromCol.items.splice(itemIndex, 1);
  toCol.items.push(item);
  __privateMethod(this, _Kanban_instances, render_fn).call(this);
  this.dispatchEvent(new CustomEvent("@update", {
    detail: __privateGet(this, _data),
    bubbles: true,
    composed: true
  }));
};
customElements.define("web-kanban", Kanban);
export {
  Kanban
};