深色模式、首页设置页面和功能优化
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Developer
344
lib/services/get/history_controller.dart
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344
lib/services/get/history_controller.dart
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import 'dart:convert';
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import 'dart:io';
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import 'package:flutter/cupertino.dart';
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import 'package:flutter/material.dart';
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import 'package:get/get.dart';
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import 'package:path_provider/path_provider.dart';
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import 'package:share_plus/share_plus.dart';
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import '../../controllers/history_controller.dart' as history_controller;
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class HistoryController extends GetxController {
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var historyList = <Map<String, dynamic>>[].obs;
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var filteredHistoryList = <Map<String, dynamic>>[].obs;
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var isLoading = true.obs;
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var searchKeyword = ''.obs;
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var selectedSortType = 0.obs; // 0: 时间倒序, 1: 时间正序, 2: 按名称排序
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var currentPage = 1.obs;
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var totalPages = 1.obs;
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var pageSize = 20;
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var totalCount = 0.obs;
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final List<String> sortTypes = ['时间倒序', '时间正序', '按名称排序'];
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@override
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void onInit() {
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super.onInit();
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loadHistory();
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}
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// === 加载历史记录 ===
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Future<void> loadHistory() async {
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isLoading.value = true;
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try {
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final history = await history_controller.HistoryController.getHistory();
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historyList.value = history;
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totalCount.value = history.length;
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totalPages.value = (totalCount.value / pageSize).ceil();
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filterAndSortHistory();
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} catch (e) {
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print('加载历史记录失败: $e');
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} finally {
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isLoading.value = false;
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}
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}
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// === 搜索历史记录 ===
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void searchHistory(String keyword) {
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searchKeyword.value = keyword;
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currentPage.value = 1;
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filterAndSortHistory();
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}
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// === 排序历史记录 ===
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void sortHistory(int sortType) {
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selectedSortType.value = sortType;
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currentPage.value = 1;
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filterAndSortHistory();
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}
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// === 过滤和排序历史记录 ===
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void filterAndSortHistory() {
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var filtered = historyList;
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// 搜索过滤
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if (searchKeyword.value.isNotEmpty) {
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filtered = historyList
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.where((item) {
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final name = item['name']?.toString().toLowerCase() ?? '';
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final alias = item['alias']?.toString().toLowerCase() ?? '';
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final introduce = item['introduce']?.toString().toLowerCase() ?? '';
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final keyword = searchKeyword.value.toLowerCase();
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return name.contains(keyword) ||
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alias.contains(keyword) ||
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introduce.contains(keyword);
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})
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.toList()
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.obs;
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}
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// 排序
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final sortedList = List<Map<String, dynamic>>.from(filtered);
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switch (selectedSortType.value) {
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case 0: // 时间倒序
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sortedList.sort(
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(a, b) => (b['timestamp'] ?? 0).compareTo(a['timestamp'] ?? 0),
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);
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break;
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case 1: // 时间正序
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sortedList.sort(
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(a, b) => (a['timestamp'] ?? 0).compareTo(b['timestamp'] ?? 0),
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);
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break;
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case 2: // 按名称排序
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sortedList.sort((a, b) => (a['name'] ?? '').compareTo(b['name'] ?? ''));
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break;
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}
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totalCount.value = sortedList.length;
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totalPages.value = (totalCount.value / pageSize).ceil();
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filteredHistoryList.value = sortedList;
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}
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// === 获取当前页的数据 ===
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List<Map<String, dynamic>> getCurrentPageData() {
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final startIndex = (currentPage.value - 1) * pageSize;
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final endIndex = startIndex + pageSize;
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if (startIndex >= filteredHistoryList.length) {
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return [];
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}
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return filteredHistoryList.sublist(
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startIndex,
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endIndex > filteredHistoryList.length
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? filteredHistoryList.length
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: endIndex,
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);
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}
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// === 切换到下一页 ===
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void nextPage() {
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if (currentPage.value < totalPages.value) {
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currentPage.value++;
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}
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}
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// === 切换到上一页 ===
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void previousPage() {
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if (currentPage.value > 1) {
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currentPage.value--;
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}
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}
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// === 跳转到指定页 ===
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void goToPage(int page) {
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if (page >= 1 && page <= totalPages.value) {
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currentPage.value = page;
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}
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}
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// === 清空历史记录 ===
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Future<void> clearHistory() async {
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try {
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final success = await history_controller.HistoryController.clearHistory();
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if (success) {
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historyList.clear();
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filteredHistoryList.clear();
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totalCount.value = 0;
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totalPages.value = 1;
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currentPage.value = 1;
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Get.snackbar('提示', '历史记录已清空');
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} else {
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Get.snackbar('提示', '清空失败');
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}
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} catch (e) {
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print('清空历史记录失败: $e');
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Get.snackbar('提示', '清空失败');
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}
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}
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// === 删除单条记录 ===
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Future<void> deleteHistoryItem(int index, Map<String, dynamic> item) async {
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try {
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final poetryId = item['id'] as int;
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final success = await history_controller
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.HistoryController.removeFromHistory(poetryId);
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if (success) {
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await loadHistory();
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Get.snackbar('提示', '删除成功');
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} else {
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Get.snackbar('提示', '删除失败');
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}
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} catch (e) {
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Get.snackbar('提示', '删除失败');
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}
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}
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// === 导出历史记录 ===
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Future<void> exportHistory() async {
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try {
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if (filteredHistoryList.isEmpty) {
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Get.snackbar('提示', '无数据可导出');
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return;
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}
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// 显示格式选择对话框
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final selectedFormat = await Get.dialog<String>(
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CupertinoAlertDialog(
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title: const Text('选择导出格式'),
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content: const Text('请选择要导出的文件格式'),
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actions: [
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CupertinoDialogAction(
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child: const Text('JSON'),
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onPressed: () => Get.back(result: 'json'),
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),
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CupertinoDialogAction(
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child: const Text('TXT'),
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onPressed: () => Get.back(result: 'txt'),
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),
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CupertinoDialogAction(
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isDestructiveAction: true,
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child: const Text('取消'),
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onPressed: () => Get.back(result: null),
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),
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],
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),
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);
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if (selectedFormat == null) {
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return; // 用户取消
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}
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// 生成导出内容
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String content;
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String fileName;
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if (selectedFormat == 'json') {
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content = _generateJsonContent();
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fileName =
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'history_export_${DateTime.now().millisecondsSinceEpoch}.json';
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} else {
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content = _generateTxtContent();
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fileName =
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'history_export_${DateTime.now().millisecondsSinceEpoch}.txt';
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}
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// 保存到临时文件
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final tempDir = await getTemporaryDirectory();
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final file = File('${tempDir.path}/$fileName');
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await file.writeAsString(content);
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// 使用 share_plus 分享文件
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final result = await Share.shareXFiles(
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[XFile(file.path)],
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subject: '历史记录导出',
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text: '诗词历史记录导出文件',
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);
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if (result.status == ShareResultStatus.success) {
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Get.snackbar('成功', '历史记录已导出并分享');
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} else if (result.status == ShareResultStatus.dismissed) {
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Get.snackbar('提示', '分享已取消');
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}
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// 清理临时文件
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if (await file.exists()) {
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await file.delete();
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}
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} catch (e) {
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print('导出历史记录失败: $e');
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Get.snackbar('错误', '导出失败: $e');
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}
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}
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// === 生成 JSON 格式内容 ===
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String _generateJsonContent() {
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final exportData = {
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'exportTime': DateTime.now().toIso8601String(),
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'totalCount': filteredHistoryList.length,
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'records': filteredHistoryList
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.map(
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(item) => {
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'id': item['id'],
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'name': item['name'],
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'alias': item['alias'],
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'date': item['date'],
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'introduce': item['introduce'],
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'timestamp': item['timestamp'],
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},
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)
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.toList(),
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};
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return const JsonEncoder.withIndent(' ').convert(exportData);
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}
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// === 生成 TXT 格式内容 ===
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String _generateTxtContent() {
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final buffer = StringBuffer();
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buffer.writeln('诗词历史记录导出');
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buffer.writeln('导出时间: ${DateTime.now()}');
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buffer.writeln('记录总数: ${filteredHistoryList.length}');
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buffer.writeln('=' * 50);
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buffer.writeln();
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for (int i = 0; i < filteredHistoryList.length; i++) {
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final item = filteredHistoryList[i];
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buffer.writeln('【${i + 1}】${item['name'] ?? '未知诗词'}');
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buffer.writeln('朝代: ${item['alias'] ?? '未知朝代'}');
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buffer.writeln('日期: ${item['date'] ?? ''}');
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if (item['introduce']?.toString().isNotEmpty == true) {
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buffer.writeln('简介: ${item['introduce']}');
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}
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buffer.writeln('-' * 50);
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buffer.writeln();
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}
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return buffer.toString();
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}
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// === 获取历史记录统计 ===
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Future<void> showStatsDialog() async {
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try {
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final stats =
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await history_controller.HistoryController.getHistoryStats();
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if (stats.isEmpty) {
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Get.snackbar('提示', '暂无统计数据');
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return;
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}
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Get.dialog(
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AlertDialog(
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title: const Text('历史记录统计'),
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content: SingleChildScrollView(
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child: Column(
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mainAxisSize: MainAxisSize.min,
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text('总数: ${stats['totalCount']}'),
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Text('今日: ${stats['todayCount']}'),
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Text('本周: ${stats['thisWeekCount']}'),
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Text('本月: ${stats['thisMonthCount']}'),
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const SizedBox(height: 16),
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const Text('热门朝代:'),
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if (stats['topDynasties'] != null &&
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stats['topDynasties'] is Map) ...[
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...(stats['topDynasties'] as Map<String, int>).entries
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.map((entry) => Text('${entry.key}: ${entry.value}'))
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.toList(),
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],
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],
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),
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),
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actions: [
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TextButton(onPressed: () => Get.back(), child: const Text('关闭')),
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],
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),
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);
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} catch (e) {
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Get.snackbar('提示', '获取统计失败');
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}
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}
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}
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