// Rôle : fournit l'outil checklist avec quantités, catégories et échange texte.
import { useState } from "react";
import { Icon } from "../../../components/Icon.jsx";
import { useGroupedReorder, moveItem } from "../../../hooks/useGroupedReorder.js";
import { ChecklistSection } from "./ChecklistParts.jsx";
import { TextExchangeActions } from "./TextExchangeActions.jsx";
import {
  appendChecklistItems,
  getChecklistReorderItems,
  isSectionComplete,
  keepChecklistSection,
  moveChecklistItem,
  moveChecklistItemToCategory,
  renameChecklistSection,
  updateChecklistItem
} from "./checklistUtils.js";

export function ChecklistModule({ toolboxId, moduleId, context, editing, textExchangeOpen }) {
  const data = context.normalizeChecklistData(context.getModuleData(toolboxId, moduleId, { items: [] }));
  const textContent = context.moduleText?.checklist || {};
  const [label, setLabel] = useState("");
  const [sectionTitle, setSectionTitle] = useState("");
  const [qty, setQty] = useState(1);
  const namedSections = data.sections.filter((section) => section.title);
  const completedSectionsMode = data.hideCompletedSectionsFully ? "hidden" : data.hideCompletedSections ? "reduced" : "visible";
  const reorderItems = getChecklistReorderItems(data.sections);
  const {
    itemReorder,
    groupReorder,
    getItemProps,
    getGroupProps,
    getGroupBoundaryProps,
    isItemDragging,
    isItemDropTarget,
    isGroupDragging,
    isGroupDropTarget,
    isBoundaryDropTarget,
    getDropPlacement,
    shouldShowGroupBoundaries
  } = useGroupedReorder({
    namespace: `checklist-${moduleId}`,
    items: reorderItems,
    getItemId: (item) => item.id,
    getItemGroup: (item) => item.sectionId,
    getEffectiveGroup: (item) => item.sectionId,
    reorderFeatures: {
      item: { groupChange: true, boundaryDrop: true },
      group: { reorder: true, boundaryDrop: true }
    },
    onItemMove: (operation) => save(moveChecklistItem(data.sections, operation, context)),
    onGroupMove: (operation) => save(moveItem(data.sections, operation.sourceId, operation.targetId, operation.placement))
  });
  const reorder = {
    itemReorder,
    groupReorder,
    getItemProps,
    getGroupProps,
    getGroupBoundaryProps,
    isItemDragging,
    isItemDropTarget,
    isGroupDragging,
    isGroupDropTarget,
    isBoundaryDropTarget,
    getDropPlacement,
    shouldShowGroupBoundaries
  };
  const showBoundaryDropZones = reorder.shouldShowGroupBoundaries();
  const visibleSections = data.sections.filter((section) => !(section.title && data.hideCompletedSectionsFully && isSectionComplete(section, context)));

  function save(sections, settings = {}) {
    context.setModuleData(toolboxId, moduleId, { ...data, ...settings, sections });
  }

  function addItem(event) {
    event.preventDefault();
    const cleanLabel = label.trim();
    if (!cleanLabel) return;
    const nextItem = { id: context.uid("item"), label: cleanLabel, qtyTarget: Math.max(1, Number(qty) || 1), qtyCurrent: 0 };
    save(appendChecklistItems(data.sections, sectionTitle, [nextItem], context));
    setLabel("");
    setQty(1);
  }

  function setCompletedSectionsMode(mode) {
    save(data.sections.map((section) => ({ ...section, hideWhenComplete: undefined })), {
      hideCompletedSections: mode === "reduced",
      hideCompletedSectionsFully: mode === "hidden"
    });
  }

  function updateSection(sectionId, updater) {
    save(data.sections.map((section) => section.id === sectionId ? updater(section) : section).filter(keepChecklistSection));
  }

  function renameSection(sectionId, title) {
    save(renameChecklistSection(data.sections, sectionId, title));
  }

  function updateItem(itemId, updater) {
    save(updateChecklistItem(data.sections, itemId, updater));
  }

  function moveItemToCategory(itemId, title) {
    save(moveChecklistItemToCategory(data.sections, itemId, title, context));
  }

  function deleteItem(itemId) {
    save(data.sections.map((section) => ({ ...section, items: section.items.filter((item) => item.id !== itemId) })).filter(keepChecklistSection));
  }

  return (
    <>
      {editing && (
        <div className="module-add-panel">
          <form className="inline-form checklist-add-form" onSubmit={addItem}>
            <input name="section" placeholder={textContent.sectionPlaceholder || "Catégorie"} value={sectionTitle} onChange={(event) => setSectionTitle(event.target.value)} />
            <input name="label" placeholder={textContent.itemPlaceholder || "Nouvel item"} value={label} onChange={(event) => setLabel(event.target.value)} />
            <input className="checklist-qty-input" name="qty" type="number" min="1" value={qty} onChange={(event) => setQty(event.target.value)} aria-label={textContent.quantityLabel || "Quantité cible"} />
            <button className="primary">{textContent.addButton || "Ajouter"}</button>
          </form>
        </div>
      )}
      {textExchangeOpen && (
        <div className="module-text-exchange-panel">
          <TextExchangeActions type="checklist" data={data} context={context} textContent={textContent} onImport={(nextData) => context.setModuleData(toolboxId, moduleId, nextData, "checklist")} />
        </div>
      )}
      {namedSections.length > 0 && (
        <div className="checklist-toolbar" role="radiogroup" aria-label={textContent.completedSectionsModeTitle || "Affichage des catégories terminées"}>
          {[
            { mode: "visible", label: textContent.completedSectionsVisibleLabel || "Visible", icon: "eye-open" },
            { mode: "reduced", label: textContent.completedSectionsReducedLabel || "Réduit", icon: "hide" },
            { mode: "hidden", label: textContent.completedSectionsHiddenLabel || "Caché", icon: "eye-closed" }
          ].map((option) => (
            <button
              className={`checklist-complete-mode-button ${completedSectionsMode === option.mode ? "active" : ""}`}
              type="button"
              role="radio"
              aria-checked={completedSectionsMode === option.mode}
              aria-label={option.label}
              key={option.mode}
              onClick={() => setCompletedSectionsMode(option.mode)}
              title={option.label}
            >
              <Icon name={option.icon} />
            </button>
          ))}
        </div>
      )}
      <ul className="checklist">
        {visibleSections.map((section, index) => {
          const isLastSection = index === visibleSections.length - 1;
          return [
            showBoundaryDropZones ? (
              <li
                className={`checklist-category-boundary-drop-zone ${reorder.isBoundaryDropTarget({ groupId: section.id, placement: "before" }) ? "is-drop-target" : ""}`}
                key={`${section.id}:before-drop`}
                {...reorder.getGroupBoundaryProps({ groupId: section.id, placement: "before" })}
              />
            ) : null,
            <ChecklistSection
              key={section.id}
              section={section}
              data={data}
              context={context}
              reorder={reorder}
              onRenameSection={renameSection}
              onUpdateSection={updateSection}
              onSaveSections={save}
              onUpdateItem={updateItem}
              onMoveItemToCategory={moveItemToCategory}
              onDeleteItem={deleteItem}
            />,
            showBoundaryDropZones && isLastSection ? (
              <li
                className={`checklist-category-boundary-drop-zone ${reorder.isBoundaryDropTarget({ groupId: section.id, placement: "after" }) ? "is-drop-target" : ""}`}
                key={`${section.id}:after-drop`}
                {...reorder.getGroupBoundaryProps({ groupId: section.id, placement: "after" })}
              />
            ) : null
          ];
        })}
      </ul>
    </>
  );
}