// Modal logic for editing a todo cell in a popup

// Create and show a modal with the Add/Edit Todo form, focusing the relevant field
function showEditTodoModal(rowIdx, key) {
  // Find the todo
  const todo = window.todos[rowIdx];
  if (!todo) return;

  // Build modal overlay
  let modal = document.createElement('div');
  modal.className = 'modal';
  modal.style.zIndex = 2000;
  modal.innerHTML = `
    <div class="modal-content modal-edit-todo">
      <button class="modal-close-btn" aria-label="Close">&times;</button>
      <h2>Edit Todo</h2>
      <form id="modal-todo-form">
        <div class="form-section">
          <label for="modal-task">Task Description</label>
          <input type="text" id="modal-task" name="task" required value="${todo.task || ''}">
        </div>
        <div class="form-section grid-3">
          <div>
            <label for="modal-creation-date">Creation Date</label>
            <input type="date" id="modal-creation-date" name="creationDate" value="${todo.creationDate || ''}">
          </div>
          <div>
            <label for="modal-next-date">Next Planned Work Date</label>
            <input type="date" id="modal-next-date" name="nextDate" value="${todo.nextDate || ''}">
          </div>
          <div>
            <label for="modal-due-date">Due Date</label>
            <input type="date" id="modal-due-date" name="dueDate" value="${todo.dueDate || ''}">
          </div>
        </div>
        <div class="form-section grid-3">
          <div>
            <label for="modal-status">Status</label>
            <select id="modal-status" name="status">
              <option value="" ${!todo.status ? 'selected' : ''}>(Blank)</option>
              <option value="Busy" ${todo.status==="Busy"?'selected':''}>Busy</option>
              <option value="Done" ${todo.status==="Done"?'selected':''}>Done</option>
              <option value="W4A" ${todo.status==="W4A"?'selected':''}>W4A</option>
            </select>
          </div>
          <div>
            <label for="modal-urgent">Urgent (1-7)</label>
            <input type="number" id="modal-urgent" name="urgent" min="1" max="7" value="${todo.urgent || ''}">
          </div>
          <div>
            <label for="modal-importance">Importance (1-7)</label>
            <input type="number" id="modal-importance" name="importance" min="1" max="7" value="${todo.importance || ''}">
          </div>
        </div>
        <div class="form-section grid-2">
          <div>
            <label for="modal-time-estimation">Time Estimation (min)</label>
            <input type="number" id="modal-time-estimation" name="timeEstimation" min="0" value="${todo.timeEstimation || ''}">
          </div>
          <div>
            <label for="modal-actual-time">Actual Time Spent (min)</label>
            <input type="number" id="modal-actual-time" name="actualTime" min="0" value="${todo.actualTime || ''}">
          </div>
        </div>
        <div class="form-section grid-2">
          <div>
            <label for="modal-category">Category</label>
            <input type="text" id="modal-category" name="category" value="${todo.category || ''}">
          </div>
          <div>
            <label for="modal-linked-tasks">Link with other tasks (IDs, comma separated)</label>
            <input type="text" id="modal-linked-tasks" name="linkedTasks" value="${todo.linkedTasks || ''}">
          </div>
        </div>
        <div class="form-section grid-2">
          <div>
            <label for="modal-coms">Coms URL</label>
            <input type="url" id="modal-coms" name="coms" value="${todo.coms || ''}">
          </div>
          <div>
            <label for="modal-link">Link URL</label>
            <input type="url" id="modal-link" name="link" value="${todo.link || ''}">
          </div>
        </div>
        <div class="form-section">
          <label for="modal-comments">Comments</label>
          <textarea id="modal-comments" name="comments">${todo.comments || ''}</textarea>
        </div>
        <button type="submit" class="add-todo-btn">Save Changes</button>
      </form>
    </div>
  `;

  // Close modal on overlay click or close button
  function closeModal() {
    modal.remove();
    document.body.style.overflow = '';
  }
  modal.querySelector('.modal-close-btn').onclick = closeModal;
  modal.onclick = (e) => { if (e.target === modal) closeModal(); };

  // Save changes
  modal.querySelector('#modal-todo-form').onsubmit = function(evt) {
    evt.preventDefault();
    const formData = new FormData(this);
    const updated = {};
    for (let [k, v] of formData.entries()) updated[k] = v;
    // Type conversions
    updated.urgent = parseInt(updated.urgent) || 1;
    updated.importance = parseInt(updated.importance) || 1;
    updated.prio = updated.urgent * updated.importance;
    updated.timeEstimation = parseInt(updated.timeEstimation) || 0;
    updated.actualTime = parseInt(updated.actualTime) || 0;
    window.todos[rowIdx] = { ...window.todos[rowIdx], ...updated };
    window.localStorage.setItem('todos-v1', JSON.stringify(window.todos));
    closeModal();
    window.renderTodos && window.renderTodos();
  };

  // Insert and focus correct field
  document.body.appendChild(modal);
  document.body.style.overflow = 'hidden';
  setTimeout(() => {
    let focusId = 'modal-' + key.replace(/([A-Z])/g, '-$1').toLowerCase();
    let focusElem = modal.querySelector('#' + focusId);
    if (focusElem) focusElem.focus();
  }, 80);
}

// Attach to window for use in app.js
document.addEventListener('DOMContentLoaded', () => {
  window.showEditTodoModal = showEditTodoModal;
});