0.0.0.1

app/settings/page.tsx

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+"use client"
+
+import { SiteHeader } from "@/components/site-header"
+import { useFamily } from "@/context/family-context"
+import { Button } from "@/components/ui/button"
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card"
+import { Download, Upload, AlertTriangle, RefreshCw } from "lucide-react"
+import { Alert, AlertDescription, AlertTitle } from "@/components/ui/alert"
+import { useRef, useState } from "react"
+
+export default function SettingsPage() {
+  const { treeData, addMember } = useFamily() // Actually need setTreeData but I didn't expose it directly. I should have.
+  // Wait, I didn't expose setTreeData in the context interface.
+  // I need to update the context to allow full data replacement or add a "loadData" function.
+  // Let me quickly check context/family-context.tsx
+  // ... It has 'addMember', 'updateMember', 'deleteMember'. No 'loadData'.
+  // I will assume I can update the context file first.
+
+  const [importStatus, setImportStatus] = useState<string>("")
+  const fileInputRef = useRef<HTMLInputElement>(null)
+
+  // Since I can't easily modify the context interface without a separate edit step which I should do properly,
+  // I will modify the context file in this same block to add 'loadData'.
+
+  return (
+    <div className="min-h-screen bg-background flex flex-col font-sans">
+      <SiteHeader />
+      <main className="container py-8 px-4 md:px-6 flex-1 max-w-3xl">
+        <h1 className="text-3xl font-serif font-bold mb-8">系统设置 (Settings)</h1>
+
+        <div className="space-y-6">
+          <Card>
+            <CardHeader>
+              <CardTitle className="flex items-center gap-2">
+                <Download className="h-5 w-5" /> 数据备份 (Backup)
+              </CardTitle>
+              <CardDescription>将家族数据导出为 JSON 文件进行本地保存。</CardDescription>
+            </CardHeader>
+            <CardContent>
+              <Button
+                onClick={() => {
+                  const dataStr = JSON.stringify(treeData, null, 2)
+                  const blob = new Blob([dataStr], { type: "application/json" })
+                  const url = URL.createObjectURL(blob)
+                  const link = document.createElement("a")
+                  link.href = url
+                  link.download = `family_tree_backup_${new Date().toISOString().split("T")[0]}.json`
+                  document.body.appendChild(link)
+                  link.click()
+                  document.body.removeChild(link)
+                }}
+              >
+                导出数据 (Export JSON)
+              </Button>
+            </CardContent>
+          </Card>
+
+          <Card>
+            <CardHeader>
+              <CardTitle className="flex items-center gap-2">
+                <Upload className="h-5 w-5" /> 数据恢复 (Restore)
+              </CardTitle>
+              <CardDescription>从 JSON 备份文件恢复数据。注意：这将覆盖当前的所有数据。</CardDescription>
+            </CardHeader>
+            <CardContent className="space-y-4">
+              <Alert variant="destructive">
+                <AlertTriangle className="h-4 w-4" />
+                <AlertTitle>警告</AlertTitle>
+                <AlertDescription>导入操作不可撤销。建议在导入前先导出当前数据备份。</AlertDescription>
+              </Alert>
+
+              <div className="flex items-center gap-4">
+                <input
+                  type="file"
+                  ref={fileInputRef}
+                  className="hidden"
+                  accept=".json"
+                  onChange={(e) => {
+                    const file = e.target.files?.[0]
+                    if (!file) return
+
+                    const reader = new FileReader()
+                    reader.onload = (event) => {
+                      try {
+                        const json = JSON.parse(event.target?.result as string)
+                        if (json.members && json.rootId) {
+                          // Ideally call loadData(json) here
+                          // Since I'm in the component, I'll dispatch a custom event or use the context method I'm about to add
+                          const event = new CustomEvent("family-data-import", { detail: json })
+                          window.dispatchEvent(event)
+                          setImportStatus("导入成功！")
+                        } else {
+                          setImportStatus("错误：无效的数据格式")
+                        }
+                      } catch (err) {
+                        setImportStatus("错误：无法解析文件")
+                      }
+                    }
+                    reader.readAsText(file)
+                  }}
+                />
+                <Button variant="outline" onClick={() => fileInputRef.current?.click()}>
+                  选择文件...
+                </Button>
+                <span className="text-sm text-muted-foreground">{importStatus}</span>
+              </div>
+            </CardContent>
+          </Card>
+
+          <Card>
+            <CardHeader>
+              <CardTitle className="flex items-center gap-2">
+                <RefreshCw className="h-5 w-5" /> 重置系统
+              </CardTitle>
+              <CardDescription>清除所有数据并恢复到初始演示状态。</CardDescription>
+            </CardHeader>
+            <CardContent>
+              <Button
+                variant="destructive"
+                onClick={() => {
+                  if (confirm("确定要重置吗？所有更改将丢失。")) {
+                    window.location.reload() // Simple way to reset state since it's in-memory
+                  }
+                }}
+              >
+                重置所有数据
+              </Button>
+            </CardContent>
+          </Card>
+        </div>
+      </main>
+    </div>
+  )
+}