feat(历史记录): 添加历史记录查询功能及PDF导出

新增历史记录查询页面，支持按时间范围筛选阅读记录、感悟记录、汇总记录、家庭事项和今日计划
添加历史记录PDF导出功能，生成包含所有记录的格式化PDF报告

core/history_views.py

@@ -0,0 +1,150 @@
+from django.shortcuts import render
+from django.http import HttpResponse
+from django.utils import timezone
+from django.contrib.auth.decorators import login_required
+from django.conf import settings
+from datetime import datetime, timedelta
+from loguru import logger
+import os
+
+from .models import (
+    ReadingRecord,
+    InsightRecord,
+    Summary,
+    FamilyTask,
+    TodayPlan,
+)
+from .views import is_weasyprint_available
+
+
+@login_required
+def history_records(request):
+    """历史记录查询页面"""
+    logger.info("用户访问历史记录查询页面")
+    
+    start_date_str = request.GET.get('start_date')
+    end_date_str = request.GET.get('end_date')
+    
+    if not start_date_str or not end_date_str:
+        today = timezone.now().date()
+        start_date = datetime(today.year, 1, 1).date()
+        end_date = today
+    else:
+        start_date = datetime.strptime(start_date_str, '%Y-%m-%d').date()
+        end_date = datetime.strptime(end_date_str, '%Y-%m-%d').date()
+    
+    # 查询各个类型的记录
+    reading_records = ReadingRecord.objects.filter(
+        date__range=[start_date, end_date]
+    ).order_by('-date')
+    
+    insight_records = InsightRecord.objects.filter(
+        date__range=[start_date, end_date]
+    ).order_by('-date')
+    
+    summary_records = Summary.objects.filter(
+        date__range=[start_date, end_date]
+    ).order_by('-date')
+    
+    family_tasks = FamilyTask.objects.filter(
+        created_at__date__range=[start_date, end_date]
+    ).order_by('-created_at')
+    
+    today_plans = TodayPlan.objects.filter(
+        date__range=[start_date, end_date]
+    ).order_by('-date')
+    
+    context = {
+        'start_date': start_date,
+        'end_date': end_date,
+        'reading_records': reading_records,
+        'insight_records': insight_records,
+        'summary_records': summary_records,
+        'family_tasks': family_tasks,
+        'today_plans': today_plans,
+    }
+    
+    return render(request, 'core/history_records.html', context)
+
+
+@login_required
+def history_pdf(request):
+    """导出历史记录PDF"""
+    if not is_weasyprint_available():
+        logger.error("WeasyPrint库不可用，无法生成PDF报告")
+        return HttpResponse("PDF功能不可用，请检查WeasyPrint库是否正确安装", status=500)
+    
+    start_date_str = request.GET.get('start_date')
+    end_date_str = request.GET.get('end_date')
+    
+    if not start_date_str or not end_date_str:
+        return HttpResponse("请提供开始时间和结束时间", status=400)
+    
+    try:
+        start_date = datetime.strptime(start_date_str, '%Y-%m-%d').date()
+        end_date = datetime.strptime(end_date_str, '%Y-%m-%d').date()
+    except ValueError:
+        return HttpResponse("日期格式错误", status=400)
+    
+    if start_date > end_date:
+        return HttpResponse("开始时间不能晚于结束时间", status=400)
+    
+    logger.info(f"用户导出历史记录PDF: {start_date} 至 {end_date}")
+    
+    try:
+        # 查询各个类型的记录
+        reading_records = ReadingRecord.objects.filter(
+            date__range=[start_date, end_date]
+        ).order_by('-date')
+        
+        insight_records = InsightRecord.objects.filter(
+            date__range=[start_date, end_date]
+        ).order_by('-date')
+        
+        summary_records = Summary.objects.filter(
+            date__range=[start_date, end_date]
+        ).order_by('-date')
+        
+        family_tasks = FamilyTask.objects.filter(
+            created_at__date__range=[start_date, end_date]
+        ).order_by('-created_at')
+        
+        today_plans = TodayPlan.objects.filter(
+            date__range=[start_date, end_date]
+        ).order_by('-date')
+        
+        context = {
+            'start_date': start_date,
+            'end_date': end_date,
+            'reading_records': reading_records,
+            'insight_records': insight_records,
+            'summary_records': summary_records,
+            'family_tasks': family_tasks,
+            'today_plans': today_plans,
+        }
+        
+        # 渲染HTML模板
+        html_string = render(request, 'core/history_pdf.html', context).content.decode('utf-8')
+        
+        # 生成PDF
+        pdf_file = f"history_{start_date_str}_to_{end_date_str}.pdf"
+        pdf_path = os.path.join(settings.REPORTS_ROOT, pdf_file)
+        
+        # 确保报告目录存在
+        os.makedirs(settings.REPORTS_ROOT, exist_ok=True)
+        
+        # 动态导入WeasyPrint
+        from weasyprint import HTML
+        HTML(string=html_string).write_pdf(pdf_path)
+        
+        logger.info(f"历史记录PDF生成成功: {pdf_path}")
+        
+        # 返回PDF文件
+        with open(pdf_path, 'rb') as f:
+            response = HttpResponse(f.read(), content_type='application/pdf')
+            response['Content-Disposition'] = f'attachment; filename="{pdf_file}"'
+            return response
+            
+    except Exception as e:
+        logger.error(f"生成历史记录PDF失败: {str(e)}")
+        return HttpResponse(f"生成PDF失败: {str(e)}", status=500)