import React, { useCallback, useEffect, useMemo } from "react";
import cloneDeep from "lodash-es/cloneDeep";
import { FormattedMessage, useIntl } from "react-intl";
import { useHistory } from "react-router-dom";
import Mousetrap from "mousetrap";
import * as GQL from "src/core/generated-graphql";
import { queryFindScenes, useFindScenes } from "src/core/StashService";
import { ListFilterModel } from "src/models/list-filter/filter";
import { DisplayMode } from "src/models/list-filter/types";
import { Tagger } from "../Tagger/scenes/SceneTagger";
import { IPlaySceneOptions, SceneQueue } from "src/models/sceneQueue";
import { SceneWallPanel } from "./SceneWallPanel";
import { SceneListTable } from "./SceneListTable";
import { EditScenesDialog } from "./EditScenesDialog";
import { DeleteScenesDialog } from "./DeleteScenesDialog";
import { GenerateDialog } from "../Dialogs/GenerateDialog";
import { ExportDialog } from "../Shared/ExportDialog";
import { SceneCardsGrid } from "./SceneCardsGrid";
import { TaggerContext } from "../Tagger/context";
import { IdentifyDialog } from "../Dialogs/IdentifyDialog/IdentifyDialog";
import { useConfigurationContext } from "src/hooks/Config";
import {
  faPencil,
  faPlay,
  faPlus,
  faTrash,
} from "@fortawesome/free-solid-svg-icons";
import { SceneMergeModal } from "./SceneMergeDialog";
import { objectTitle } from "src/core/files";
import TextUtils from "src/utils/text";
import { View } from "../List/views";
import { FileSize } from "../Shared/FileSize";
import { LoadedContent } from "../List/PagedList";
import { useCloseEditDelete, useFilterOperations } from "../List/util";
import {
  OperationDropdown,
  OperationDropdownItem,
} from "../List/ListOperationButtons";
import { useFilteredItemList } from "../List/ItemList";
import {
  Sidebar,
  SidebarPane,
  SidebarPaneContent,
  SidebarStateContext,
  useSidebarState,
} from "../Shared/Sidebar";
import { SidebarPerformersFilter } from "../List/Filters/PerformersFilter";
import { SidebarStudiosFilter } from "../List/Filters/StudiosFilter";
import { PerformersCriterionOption } from "src/models/list-filter/criteria/performers";
import { StudiosCriterionOption } from "src/models/list-filter/criteria/studios";
import { TagsCriterionOption } from "src/models/list-filter/criteria/tags";
import { SidebarTagsFilter } from "../List/Filters/TagsFilter";
import cx from "classnames";
import { RatingCriterionOption } from "src/models/list-filter/criteria/rating";
import { SidebarRatingFilter } from "../List/Filters/RatingFilter";
import { OrganizedCriterionOption } from "src/models/list-filter/criteria/organized";
import { HasMarkersCriterionOption } from "src/models/list-filter/criteria/has-markers";
import { SidebarBooleanFilter } from "../List/Filters/BooleanFilter";
import {
  DurationCriterionOption,
  PerformerAgeCriterionOption,
} from "src/models/list-filter/scenes";
import { SidebarAgeFilter } from "../List/Filters/SidebarAgeFilter";
import { SidebarDurationFilter } from "../List/Filters/SidebarDurationFilter";
import {
  FilteredSidebarHeader,
  useFilteredSidebarKeybinds,
} from "../List/Filters/FilterSidebar";
import { PatchContainerComponent } from "src/patch";
import { Pagination } from "../List/Pagination";
import { Button, ButtonGroup } from "react-bootstrap";
import { Icon } from "../Shared/Icon";
import useFocus from "src/utils/focus";
import {
  FilteredListToolbar2,
  ToolbarFilterSection,
  ToolbarSelectionSection,
} from "../List/ListToolbar";
import { ListResultsHeader } from "../List/ListResultsHeader";
import { useZoomKeybinds } from "../List/ZoomSlider";

function renderMetadataByline(result: GQL.FindScenesQueryResult) {
  const duration = result?.data?.findScenes?.duration;
  const size = result?.data?.findScenes?.filesize;

  if (!duration && !size) {
    return;
  }

  const separator = duration && size ? " - " : "";

  return (
    <span className="scenes-stats">
      &nbsp;(
      {duration ? (
        <span className="scenes-duration">
          {TextUtils.secondsAsTimeString(duration, 3)}
        </span>
      ) : undefined}
      {separator}
      {size ? (
        <span className="scenes-size">
          <FileSize size={size} />
        </span>
      ) : undefined}
      )
    </span>
  );
}

function usePlayScene() {
  const history = useHistory();

  const { configuration: config } = useConfigurationContext();
  const cont = config?.interface.continuePlaylistDefault ?? false;
  const autoPlay = config?.interface.autostartVideoOnPlaySelected ?? false;

  const playScene = useCallback(
    (queue: SceneQueue, sceneID: string, options?: IPlaySceneOptions) => {
      history.push(
        queue.makeLink(sceneID, { autoPlay, continue: cont, ...options })
      );
    },
    [history, cont, autoPlay]
  );

  return playScene;
}

function usePlaySelected(selectedIds: Set<string>) {
  const playScene = usePlayScene();

  const playSelected = useCallback(() => {
    // populate queue and go to first scene
    const sceneIDs = Array.from(selectedIds.values());
    const queue = SceneQueue.fromSceneIDList(sceneIDs);

    playScene(queue, sceneIDs[0]);
  }, [selectedIds, playScene]);

  return playSelected;
}

function usePlayFirst() {
  const playScene = usePlayScene();

  const playFirst = useCallback(
    (queue: SceneQueue, sceneID: string, index: number) => {
      // populate queue and go to first scene
      playScene(queue, sceneID, { sceneIndex: index });
    },
    [playScene]
  );

  return playFirst;
}

function usePlayRandom(filter: ListFilterModel, count: number) {
  const playScene = usePlayScene();

  const playRandom = useCallback(async () => {
    // query for a random scene
    if (count === 0) {
      return;
    }

    const pages = Math.ceil(count / filter.itemsPerPage);
    const page = Math.floor(Math.random() * pages) + 1;

    const indexMax = Math.min(filter.itemsPerPage, count);
    const index = Math.floor(Math.random() * indexMax);
    const filterCopy = cloneDeep(filter);
    filterCopy.currentPage = page;
    filterCopy.sortBy = "random";
    const queryResults = await queryFindScenes(filterCopy);
    const scene = queryResults.data.findScenes.scenes[index];
    if (scene) {
      // navigate to the image player page
      const queue = SceneQueue.fromListFilterModel(filterCopy);
      playScene(queue, scene.id, { sceneIndex: index });
    }
  }, [filter, count, playScene]);

  return playRandom;
}

function useAddKeybinds(filter: ListFilterModel, count: number) {
  const playRandom = usePlayRandom(filter, count);

  useEffect(() => {
    Mousetrap.bind("p r", () => {
      playRandom();
    });

    return () => {
      Mousetrap.unbind("p r");
    };
  }, [playRandom]);
}

const SceneList: React.FC<{
  scenes: GQL.SlimSceneDataFragment[];
  filter: ListFilterModel;
  selectedIds: Set<string>;
  onSelectChange: (id: string, selected: boolean, shiftKey: boolean) => void;
  fromGroupId?: string;
}> = ({ scenes, filter, selectedIds, onSelectChange, fromGroupId }) => {
  const queue = useMemo(() => SceneQueue.fromListFilterModel(filter), [filter]);

  if (scenes.length === 0) {
    return null;
  }

  if (filter.displayMode === DisplayMode.Grid) {
    return (
      <SceneCardsGrid
        scenes={scenes}
        queue={queue}
        zoomIndex={filter.zoomIndex}
        selectedIds={selectedIds}
        onSelectChange={onSelectChange}
        fromGroupId={fromGroupId}
      />
    );
  }
  if (filter.displayMode === DisplayMode.List) {
    return (
      <SceneListTable
        scenes={scenes}
        queue={queue}
        selectedIds={selectedIds}
        onSelectChange={onSelectChange}
      />
    );
  }
  if (filter.displayMode === DisplayMode.Wall) {
    return (
      <SceneWallPanel
        scenes={scenes}
        sceneQueue={queue}
        zoomIndex={filter.zoomIndex}
      />
    );
  }
  if (filter.displayMode === DisplayMode.Tagger) {
    return <Tagger scenes={scenes} queue={queue} />;
  }

  return null;
};

const ScenesFilterSidebarSections = PatchContainerComponent(
  "FilteredSceneList.SidebarSections"
);

const SidebarContent: React.FC<{
  filter: ListFilterModel;
  setFilter: (filter: ListFilterModel) => void;
  filterHook?: (filter: ListFilterModel) => ListFilterModel;
  view?: View;
  sidebarOpen: boolean;
  onClose?: () => void;
  showEditFilter: (editingCriterion?: string) => void;
  count?: number;
  focus?: ReturnType<typeof useFocus>;
}> = ({
  filter,
  setFilter,
  filterHook,
  view,
  showEditFilter,
  sidebarOpen,
  onClose,
  count,
  focus,
}) => {
  const showResultsId =
    count !== undefined ? "actions.show_count_results" : "actions.show_results";

  const hideStudios = view === View.StudioScenes;

  return (
    <>
      <FilteredSidebarHeader
        sidebarOpen={sidebarOpen}
        showEditFilter={showEditFilter}
        filter={filter}
        setFilter={setFilter}
        view={view}
        focus={focus}
      />

      <ScenesFilterSidebarSections>
        {!hideStudios && (
          <SidebarStudiosFilter
            title={<FormattedMessage id="studios" />}
            data-type={StudiosCriterionOption.type}
            option={StudiosCriterionOption}
            filter={filter}
            setFilter={setFilter}
            filterHook={filterHook}
            sectionID="studios"
          />
        )}
        <SidebarPerformersFilter
          title={<FormattedMessage id="performers" />}
          data-type={PerformersCriterionOption.type}
          option={PerformersCriterionOption}
          filter={filter}
          setFilter={setFilter}
          filterHook={filterHook}
          sectionID="performers"
        />
        <SidebarTagsFilter
          title={<FormattedMessage id="tags" />}
          data-type={TagsCriterionOption.type}
          option={TagsCriterionOption}
          filter={filter}
          setFilter={setFilter}
          filterHook={filterHook}
          sectionID="tags"
        />
        <SidebarRatingFilter
          title={<FormattedMessage id="rating" />}
          data-type={RatingCriterionOption.type}
          option={RatingCriterionOption}
          filter={filter}
          setFilter={setFilter}
          sectionID="rating"
        />
        <SidebarDurationFilter
          title={<FormattedMessage id="duration" />}
          option={DurationCriterionOption}
          filter={filter}
          setFilter={setFilter}
          sectionID="duration"
        />
        <SidebarBooleanFilter
          title={<FormattedMessage id="hasMarkers" />}
          data-type={HasMarkersCriterionOption.type}
          option={HasMarkersCriterionOption}
          filter={filter}
          setFilter={setFilter}
          sectionID="hasMarkers"
        />
        <SidebarBooleanFilter
          title={<FormattedMessage id="organized" />}
          data-type={OrganizedCriterionOption.type}
          option={OrganizedCriterionOption}
          filter={filter}
          setFilter={setFilter}
          sectionID="organized"
        />
        <SidebarAgeFilter
          title={<FormattedMessage id="performer_age" />}
          option={PerformerAgeCriterionOption}
          filter={filter}
          setFilter={setFilter}
          sectionID="performer_age"
        />
      </ScenesFilterSidebarSections>

      <div className="sidebar-footer">
        <Button className="sidebar-close-button" onClick={onClose}>
          <FormattedMessage id={showResultsId} values={{ count }} />
        </Button>
      </div>
    </>
  );
};

interface IOperations {
  text: string;
  onClick: () => void;
  isDisplayed?: () => boolean;
  className?: string;
}

const SceneListOperations: React.FC<{
  items: number;
  hasSelection: boolean;
  operations: IOperations[];
  onEdit: () => void;
  onDelete: () => void;
  onPlay: () => void;
  onCreateNew: () => void;
}> = ({
  items,
  hasSelection,
  operations,
  onEdit,
  onDelete,
  onPlay,
  onCreateNew,
}) => {
  const intl = useIntl();

  return (
    <div className="scene-list-operations">
      <ButtonGroup>
        {!!items && (
          <Button
            className="play-button"
            variant="secondary"
            onClick={() => onPlay()}
            title={intl.formatMessage({ id: "actions.play" })}
          >
            <Icon icon={faPlay} />
          </Button>
        )}
        {!hasSelection && (
          <Button
            className="create-new-button"
            variant="secondary"
            onClick={() => onCreateNew()}
            title={intl.formatMessage(
              { id: "actions.create_entity" },
              { entityType: intl.formatMessage({ id: "scene" }) }
            )}
          >
            <Icon icon={faPlus} />
          </Button>
        )}

        {hasSelection && (
          <>
            <Button variant="secondary" onClick={() => onEdit()}>
              <Icon icon={faPencil} />
            </Button>
            <Button
              variant="danger"
              className="btn-danger-minimal"
              onClick={() => onDelete()}
            >
              <Icon icon={faTrash} />
            </Button>
          </>
        )}

        <OperationDropdown
          className="scene-list-operations"
          menuPortalTarget={document.body}
        >
          {operations.map((o) => {
            if (o.isDisplayed && !o.isDisplayed()) {
              return null;
            }

            return (
              <OperationDropdownItem
                key={o.text}
                onClick={o.onClick}
                text={o.text}
                className={o.className}
              />
            );
          })}
        </OperationDropdown>
      </ButtonGroup>
    </div>
  );
};

interface IFilteredScenes {
  filterHook?: (filter: ListFilterModel) => ListFilterModel;
  defaultSort?: string;
  view?: View;
  alterQuery?: boolean;
  fromGroupId?: string;
}

export const FilteredSceneList = (props: IFilteredScenes) => {
  const intl = useIntl();
  const history = useHistory();

  const searchFocus = useFocus();
  const [, setSearchFocus] = searchFocus;

  const { filterHook, defaultSort, view, alterQuery, fromGroupId } = props;

  // States
  const {
    showSidebar,
    setShowSidebar,
    loading: sidebarStateLoading,
    sectionOpen,
    setSectionOpen,
  } = useSidebarState(view);

  const { filterState, queryResult, modalState, listSelect, showEditFilter } =
    useFilteredItemList({
      filterStateProps: {
        filterMode: GQL.FilterMode.Scenes,
        defaultSort,
        view,
        useURL: alterQuery,
      },
      queryResultProps: {
        useResult: useFindScenes,
        getCount: (r) => r.data?.findScenes.count ?? 0,
        getItems: (r) => r.data?.findScenes.scenes ?? [],
        filterHook,
      },
    });

  const { filter, setFilter } = filterState;

  const { effectiveFilter, result, cachedResult, items, totalCount } =
    queryResult;

  const {
    selectedIds,
    selectedItems,
    onSelectChange,
    onSelectAll,
    onSelectNone,
    hasSelection,
  } = listSelect;

  const { modal, showModal, closeModal } = modalState;

  // Utility hooks
  const { setPage, removeCriterion, clearAllCriteria } = useFilterOperations({
    filter,
    setFilter,
  });

  useAddKeybinds(filter, totalCount);
  useFilteredSidebarKeybinds({
    showSidebar,
    setShowSidebar,
  });

  useEffect(() => {
    Mousetrap.bind("e", () => {
      if (hasSelection) {
        onEdit?.();
      }
    });

    Mousetrap.bind("d d", () => {
      if (hasSelection) {
        onDelete?.();
      }
    });

    return () => {
      Mousetrap.unbind("e");
      Mousetrap.unbind("d d");
    };
  });
  useZoomKeybinds({
    zoomIndex: filter.zoomIndex,
    onChangeZoom: (zoom) => setFilter(filter.setZoom(zoom)),
  });

  const onCloseEditDelete = useCloseEditDelete({
    closeModal,
    onSelectNone,
    result,
  });

  const metadataByline = useMemo(() => {
    if (cachedResult.loading) return null;

    return renderMetadataByline(cachedResult) ?? null;
  }, [cachedResult]);

  const queue = useMemo(() => SceneQueue.fromListFilterModel(filter), [filter]);

  const playRandom = usePlayRandom(effectiveFilter, totalCount);
  const playSelected = usePlaySelected(selectedIds);
  const playFirst = usePlayFirst();

  function onCreateNew() {
    history.push("/scenes/new");
  }

  function onPlay() {
    if (items.length === 0) {
      return;
    }

    // if there are selected items, play those
    if (hasSelection) {
      playSelected();
      return;
    }

    // otherwise, play the first item in the list
    const sceneID = items[0].id;
    playFirst(queue, sceneID, 0);
  }

  function onExport(all: boolean) {
    showModal(
      <ExportDialog
        exportInput={{
          scenes: {
            ids: Array.from(selectedIds.values()),
            all: all,
          },
        }}
        onClose={() => closeModal()}
      />
    );
  }

  function onMerge() {
    const selected =
      selectedItems.map((s) => {
        return {
          id: s.id,
          title: objectTitle(s),
        };
      }) ?? [];
    showModal(
      <SceneMergeModal
        scenes={selected}
        onClose={(mergedID?: string) => {
          closeModal();
          if (mergedID) {
            history.push(`/scenes/${mergedID}`);
          }
        }}
        show
      />
    );
  }

  function onEdit() {
    showModal(
      <EditScenesDialog selected={selectedItems} onClose={onCloseEditDelete} />
    );
  }

  function onDelete() {
    showModal(
      <DeleteScenesDialog
        selected={selectedItems}
        onClose={onCloseEditDelete}
      />
    );
  }

  const otherOperations = [
    {
      text: intl.formatMessage({ id: "actions.play" }),
      onClick: () => onPlay(),
      isDisplayed: () => items.length > 0,
      className: "play-item",
    },
    {
      text: intl.formatMessage(
        { id: "actions.create_entity" },
        { entityType: intl.formatMessage({ id: "scene" }) }
      ),
      onClick: () => onCreateNew(),
      isDisplayed: () => !hasSelection,
      className: "create-new-item",
    },
    {
      text: intl.formatMessage({ id: "actions.select_all" }),
      onClick: () => onSelectAll(),
      isDisplayed: () => totalCount > 0,
    },
    {
      text: intl.formatMessage({ id: "actions.select_none" }),
      onClick: () => onSelectNone(),
      isDisplayed: () => hasSelection,
    },
    {
      text: intl.formatMessage({ id: "actions.play_random" }),
      onClick: playRandom,
      isDisplayed: () => totalCount > 1,
    },
    {
      text: `${intl.formatMessage({ id: "actions.generate" })}…`,
      onClick: () =>
        showModal(
          <GenerateDialog
            type="scene"
            selectedIds={Array.from(selectedIds.values())}
            onClose={() => closeModal()}
          />
        ),
      isDisplayed: () => hasSelection,
    },
    {
      text: `${intl.formatMessage({ id: "actions.identify" })}…`,
      onClick: () =>
        showModal(
          <IdentifyDialog
            selectedIds={Array.from(selectedIds.values())}
            onClose={() => closeModal()}
          />
        ),
      isDisplayed: () => hasSelection,
    },
    {
      text: `${intl.formatMessage({ id: "actions.merge" })}…`,
      onClick: () => onMerge(),
      isDisplayed: () => hasSelection,
    },
    {
      text: intl.formatMessage({ id: "actions.export" }),
      onClick: () => onExport(false),
      isDisplayed: () => hasSelection,
    },
    {
      text: intl.formatMessage({ id: "actions.export_all" }),
      onClick: () => onExport(true),
    },
  ];

  // render
  if (sidebarStateLoading) return null;

  const operations = (
    <SceneListOperations
      items={items.length}
      hasSelection={hasSelection}
      operations={otherOperations}
      onEdit={onEdit}
      onDelete={onDelete}
      onPlay={onPlay}
      onCreateNew={onCreateNew}
    />
  );

  return (
    <TaggerContext>
      <div
        className={cx("item-list-container scene-list", {
          "hide-sidebar": !showSidebar,
        })}
      >
        {modal}

        <SidebarStateContext.Provider value={{ sectionOpen, setSectionOpen }}>
          <SidebarPane hideSidebar={!showSidebar}>
            <Sidebar hide={!showSidebar} onHide={() => setShowSidebar(false)}>
              <SidebarContent
                filter={filter}
                setFilter={setFilter}
                filterHook={filterHook}
                showEditFilter={showEditFilter}
                view={view}
                sidebarOpen={showSidebar}
                onClose={() => setShowSidebar(false)}
                count={cachedResult.loading ? undefined : totalCount}
                focus={searchFocus}
              />
            </Sidebar>
            <SidebarPaneContent>
              <FilteredListToolbar2
                className="scene-list-toolbar"
                hasSelection={hasSelection}
                filterSection={
                  <ToolbarFilterSection
                    filter={filter}
                    onSetFilter={setFilter}
                    onToggleSidebar={() => setShowSidebar(!showSidebar)}
                    onEditCriterion={(c) =>
                      showEditFilter(c?.criterionOption.type)
                    }
                    onRemoveCriterion={removeCriterion}
                    onRemoveAllCriterion={() => clearAllCriteria(true)}
                    onEditSearchTerm={() => {
                      setShowSidebar(true);
                      setSearchFocus(true);
                    }}
                    onRemoveSearchTerm={() =>
                      setFilter(filter.clearSearchTerm())
                    }
                    view={view}
                  />
                }
                selectionSection={
                  <ToolbarSelectionSection
                    selected={selectedIds.size}
                    onToggleSidebar={() => setShowSidebar(!showSidebar)}
                    onSelectAll={() => onSelectAll()}
                    onSelectNone={() => onSelectNone()}
                    operations={operations}
                  />
                }
                operationSection={operations}
              />

              <ListResultsHeader
                loading={cachedResult.loading}
                filter={filter}
                totalCount={totalCount}
                metadataByline={metadataByline}
                onChangeFilter={(newFilter) => setFilter(newFilter)}
              />

              <LoadedContent loading={result.loading} error={result.error}>
                <SceneList
                  filter={effectiveFilter}
                  scenes={items}
                  selectedIds={selectedIds}
                  onSelectChange={onSelectChange}
                  fromGroupId={fromGroupId}
                />
              </LoadedContent>

              {totalCount > filter.itemsPerPage && (
                <div className="pagination-footer">
                  <Pagination
                    itemsPerPage={filter.itemsPerPage}
                    currentPage={filter.currentPage}
                    totalItems={totalCount}
                    metadataByline={metadataByline}
                    onChangePage={setPage}
                    pagePopupPlacement="top"
                  />
                </div>
              )}
            </SidebarPaneContent>
          </SidebarPane>
        </SidebarStateContext.Provider>
      </div>
    </TaggerContext>
  );
};

export default FilteredSceneList;
