import 'dart:async';
import 'package:flutter/material.dart';
import 'package:aves/model/entry/entry.dart';
import 'package:aves/model/selection.dart';
import 'package:aves/model/settings/settings.dart';
import 'package:aves/model/source/collection_lens.dart';
import 'package:aves/model/source/collection_source.dart';
import 'package:aves/services/common/services.dart';
import 'package:aves/widgets/collection/actions/entry_actions.dart';
import 'package:aves/widgets/collection/actions/entry_action_dialogs.dart';
import 'package:aves/widgets/collection/actions/entry_action_edit.dart';
import 'package:aves/widgets/collection/actions/entry_action_cast.dart';
import 'package:aves/widgets/collection/actions/entry_action_utils.dart';
import 'package:aves/widgets/dialogs/aves_confirmation_dialog.dart';
import 'package:aves/widgets/dialogs/convert_entry_dialog.dart';
import 'package:aves/widgets/map/map_page.dart';
import 'package:aves/widgets/common/search/route.dart';
import 'package:aves/widgets/common/extensions/build_context.dart';

/// Gestore principale delle azioni sugli entry.
/// Versione ultra‑ottimizzata, senza album, senza filter_grids.
class EntryActionHandlers {
  final BuildContext context;
  final CollectionLens collection;
  final AvesSelection selection;

  EntryActionHandlers({
    required this.context,
    required this.collection,
    required this.selection,
  });

  /// Esegue l’azione richiesta.
  Future<void> run(EntryAction action) async {
    final entries = selection.selectedEntries.toList();
    if (entries.isEmpty && !_actionAllowsEmptySelection(action)) {
      return;
    }

    switch (action) {
      // Navigazione
      case EntryAction.configureView:
        return _configureView();
      case EntryAction.searchCollection:
        return _search();
      case EntryAction.map:
        return _openMap(entries);
      case EntryAction.slideshow:
        return _slideshow(entries);
      case EntryAction.stats:
        return _stats(entries);
      case EntryAction.rescan:
        return _rescan();

      // Selezione
      case EntryAction.select:
        return selection.toggle(entries.first);
      case EntryAction.selectAll:
        return selection.selectAll();
      case EntryAction.selectNone:
        return selection.clear();

      // Cast
      case EntryAction.cast:
        return EntryActionCast(context, entries).startCast();

      // File operations
      case EntryAction.share:
        return _share(entries);
      case EntryAction.delete:
        return _delete(entries);
      case EntryAction.copy:
        return _copy(entries);
      case EntryAction.move:
        return _move(entries);
      case EntryAction.rename:
        return _rename(entries);
      case EntryAction.convert:
        return _convert(entries);

      // Metadata
      case EntryAction.toggleFavourite:
        return _toggleFavourite(entries);
      case EntryAction.rotateCW:
        return EntryActionEdit.rotateCW(context, entries);
      case EntryAction.rotateCCW:
        return EntryActionEdit.rotateCCW(context, entries);
      case EntryAction.flip:
        return EntryActionEdit.flip(context, entries);
      case EntryAction.editDate:
        return _editDate(entries);
      case EntryAction.editLocation:
        return _editLocation(entries);
      case EntryAction.editTitleDescription:
        return _editTitleDescription(entries);
      case EntryAction.editRating:
        return _editRating(entries);
      case EntryAction.editTags:
        return _editTags(entries);
      case EntryAction.removeMetadata:
        return _removeMetadata(entries);
    }
  }

  // ------------------------------------------------------------
  // NAVIGAZIONE
  // ------------------------------------------------------------

  Future<void> _configureView() async {
    settings.configureView = !settings.configureView;
  }

  Future<void> _search() async {
    Navigator.push(
      context,
      SearchPageRoute(
        collection: collection,
      ),
    );
  }

  Future<void> _openMap(List<AvesEntry> entries) async {
    if (entries.isEmpty) return;
    Navigator.push(
      context,
      MaterialPageRoute(
        builder: (_) => MapPage(entries: entries),
      ),
    );
  }

  Future<void> _slideshow(List<AvesEntry> entries) async {
    await showDialog(
      context: context,
      builder: (_) => SlideshowDialog(entries: entries),
    );
  }

  Future<void> _stats(List<AvesEntry> entries) async {
    await showDialog(
      context: context,
      builder: (_) => StatsDialog(entries: entries),
    );
  }

  Future<void> _rescan() async {
    await collection.source.reload();
  }

  // ------------------------------------------------------------
  // FILE OPERATIONS
  // ------------------------------------------------------------

  Future<void> _share(List<AvesEntry> entries) async {
    await appService.share(entries);
  }

  Future<void> _delete(List<AvesEntry> entries) async {
    final confirmed = await showDialog<bool>(
      context: context,
      builder: (_) => AvesConfirmationDialog(
        title: 'Elimina',
        message: 'Vuoi eliminare ${entries.length} elementi?',
      ),
    );
    if (confirmed != true) return;

    await appService.delete(entries);
    selection.clear();
  }

  Future<void> _copy(List<AvesEntry> entries) async {
    await EntryActionUtils.copyEntries(context, entries);
  }

  Future<void> _move(List<AvesEntry> entries) async {
    await EntryActionUtils.moveEntries(context, entries);
  }

  Future<void> _rename(List<AvesEntry> entries) async {
    if (entries.length != 1) return;

    await Navigator.push(
      context,
      MaterialPageRoute(
        builder: (_) => RenameEntrySetPage(entries: entries),
      ),
    );
  }

  Future<void> _convert(List<AvesEntry> entries) async {
    if (entries.length != 1) return;

    await showDialog(
      context: context,
      builder: (_) => ConvertEntryDialog(entry: entries.first),
    );
  }

  // ------------------------------------------------------------
  // METADATA
  // ------------------------------------------------------------

  Future<void> _toggleFavourite(List<AvesEntry> entries) async {
    for (final entry in entries) {
      entry.toggleFavourite();
    }
  }

  Future<void> _editDate(List<AvesEntry> entries) async {
    await showDialog(
      context: context,
      builder: (_) => EditDateDialog(entries: entries),
    );
  }

  Future<void> _editLocation(List<AvesEntry> entries) async {
    await showDialog(
      context: context,
      builder: (_) => EditLocationDialog(entries: entries),
    );
  }

  Future<void> _editTitleDescription(List<AvesEntry> entries) async {
    await showDialog(
      context: context,
      builder: (_) => EditTitleDescriptionDialog(entries: entries),
    );
  }

  Future<void> _editRating(List<AvesEntry> entries) async {
    await showDialog(
      context: context,
      builder: (_) => EditRatingDialog(entries: entries),
    );
  }

  Future<void> _editTags(List<AvesEntry> entries) async {
    await showDialog(
      context: context,
      builder: (_) => EditTagsDialog(entries: entries),
    );
  }

  Future<void> _removeMetadata(List<AvesEntry> entries) async {
    await showDialog(
      context: context,
      builder: (_) => RemoveMetadataDialog(entries: entries),
    );
  }

  // ------------------------------------------------------------
  // UTILS
  // ------------------------------------------------------------

  bool _actionAllowsEmptySelection(EntryAction action) {
    return {
      EntryAction.configureView,
      EntryAction.searchCollection,
      EntryAction.rescan,
    }.contains(action);
  }
}