import { useState, useEffect } from "react";
import { useMutation, useQuery } from "@tanstack/react-query";
import { Button } from "@/components/ui/button";
import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
import { Input } from "@/components/ui/input";
import { Switch } from "@/components/ui/switch";
import { Tabs, TabsContent, TabsList, TabsTrigger } from "@/components/ui/tabs";
import { AlertDialog, AlertDialogAction, AlertDialogCancel, AlertDialogContent, AlertDialogDescription, AlertDialogFooter, AlertDialogHeader, AlertDialogTitle, } from "@/components/ui/alert-dialog";
import { Copy, Eye, EyeOff, RefreshCw, Network, RotateCcw, HardDrive } from "lucide-react";
import { apiRequest, queryClient } from "@/lib/queryClient";
import { useToast } from "@/hooks/use-toast";
const HOUR_OPTIONS = Array.from({ length: 24 }, (_, h) => {
    const label = h === 0
        ? "12:00 AM (midnight)"
        : h < 12
            ? `${h}:00 AM`
            : h === 12
                ? "12:00 PM (noon)"
                : `${h - 12}:00 PM`;
    return { value: h, label };
});
export function NetworkBackupManager() {
    return (<Card>
      <CardHeader>
        <CardTitle className="flex items-center gap-2">
          <Network className="h-5 w-5"/>
          Network Backup
        </CardTitle>
      </CardHeader>
      <CardContent>
        <Tabs defaultValue="rclone">
          <TabsList className="mb-4">
            <TabsTrigger value="rclone">
              <HardDrive className="h-4 w-4 mr-1"/>
              Rclone
            </TabsTrigger>
            <TabsTrigger value="apikey">
              <Network className="h-4 w-4 mr-1"/>
              API Key
            </TabsTrigger>
          </TabsList>
          <TabsContent value="rclone">
            <RcloneBackupSection />
          </TabsContent>
          <TabsContent value="apikey">
            <ApiKeyBackupSection />
          </TabsContent>
        </Tabs>
      </CardContent>
    </Card>);
}
// ============================================================
// Tab 1: Rclone
// ============================================================
function RcloneBackupSection() {
    const { toast } = useToast();
    // Server (source) state
    const [serverEnabled, setServerEnabled] = useState(false);
    const [serverPort, setServerPort] = useState(8080);
    // Receiver state
    const [receiverEnabled, setReceiverEnabled] = useState(false);
    const [receiverSyncHour, setReceiverSyncHour] = useState(21);
    const [sourceIp, setSourceIp] = useState("");
    const [sourcePort, setSourcePort] = useState(8080);
    // Auto-import state
    const [autoImportEnabled, setAutoImportEnabled] = useState(false);
    const [autoImportHour, setAutoImportHour] = useState(22);
    const [formLoaded, setFormLoaded] = useState(false);
    const { data: rcloneConfig } = useQuery({
        queryKey: ["/db/rclone-config"],
        queryFn: async () => {
            const res = await apiRequest("GET", "/api/database-management/rclone-config");
            return res.json();
        },
    });
    const { data: rcloneStatus } = useQuery({
        queryKey: ["/db/rclone-status"],
        queryFn: async () => {
            const res = await apiRequest("GET", "/api/database-management/rclone-status");
            return res.json();
        },
        refetchInterval: 5000,
    });
    useEffect(() => {
        if (rcloneConfig && !formLoaded) {
            setServerEnabled(rcloneConfig.serverEnabled ?? false);
            setServerPort(rcloneConfig.serverPort ?? 8080);
            setReceiverEnabled(rcloneConfig.receiverEnabled ?? false);
            setReceiverSyncHour(rcloneConfig.receiverSyncHour ?? 21);
            setSourceIp(rcloneConfig.sourceIp ?? "");
            setSourcePort(rcloneConfig.sourcePort ?? 8080);
            setAutoImportEnabled(rcloneConfig.autoImportEnabled ?? false);
            setAutoImportHour(rcloneConfig.autoImportHour ?? 22);
            setFormLoaded(true);
        }
    }, [rcloneConfig, formLoaded]);
    const saveMutation = useMutation({
        mutationFn: async () => {
            const res = await apiRequest("PUT", "/api/database-management/rclone-config", {
                serverEnabled,
                serverPort,
                receiverEnabled,
                receiverSyncHour,
                sourceIp,
                sourcePort,
                autoImportEnabled,
                autoImportHour,
            });
            return res.json();
        },
        onSuccess: () => {
            queryClient.invalidateQueries({ queryKey: ["/db/rclone-config"] });
            toast({ title: "Rclone settings saved" });
        },
        onError: () => {
            toast({ title: "Error", description: "Failed to save rclone settings.", variant: "destructive" });
        },
    });
    const pullNowMutation = useMutation({
        mutationFn: async () => {
            const res = await apiRequest("POST", "/api/database-management/rclone-pull-now");
            if (!res.ok) {
                const body = await res.json();
                throw new Error(body.details || body.error || "Pull failed");
            }
            return res.json();
        },
        onSuccess: () => {
            queryClient.invalidateQueries({ queryKey: ["/db/rclone-config"] });
            toast({ title: "Rclone pull complete", description: "Backup files copied from source PC." });
        },
        onError: (err) => {
            queryClient.invalidateQueries({ queryKey: ["/db/rclone-config"] });
            toast({ title: "Rclone pull failed", description: err.message, variant: "destructive" });
        },
    });
    const importNowMutation = useMutation({
        mutationFn: async () => {
            const res = await apiRequest("POST", "/api/database-management/auto-import-now");
            if (!res.ok) {
                const body = await res.json();
                throw new Error(body.details || body.error || "Import failed");
            }
            return res.json();
        },
        onSuccess: () => {
            queryClient.invalidateQueries({ queryKey: ["/db/rclone-config"] });
            toast({ title: "Import complete", description: "Latest backup restored to database." });
        },
        onError: (err) => {
            queryClient.invalidateQueries({ queryKey: ["/db/rclone-config"] });
            toast({ title: "Import failed", description: err.message, variant: "destructive" });
        },
    });
    const serverRunning = rcloneStatus?.serverRunning ?? false;
    return (<div className="space-y-6">
      {/* ── Source PC: Serve backups via WebDAV ── */}
      <div className="space-y-3 border rounded-lg p-4">
        <div className="flex items-center justify-between">
          <p className="text-sm font-semibold text-gray-800">Source PC — Serve Backups</p>
          <div className={`flex items-center gap-1.5 text-xs ${serverRunning ? "text-green-600" : "text-gray-400"}`}>
            <div className={`w-2 h-2 rounded-full ${serverRunning ? "bg-green-500" : "bg-gray-300"}`}/>
            {serverRunning ? "Running" : "Stopped"}
          </div>
        </div>
        <p className="text-xs text-gray-500">
          Enable this on the source PC to serve the <code>backups/</code> folder via WebDAV.
          The backup PC will connect to this machine to pull files.
        </p>

        <div className="flex flex-wrap items-center gap-4">
          <div className="flex items-center gap-2">
            <Switch id="rclone-server-toggle" checked={serverEnabled} onCheckedChange={setServerEnabled}/>
            <label htmlFor="rclone-server-toggle" className="text-sm font-medium text-gray-700 cursor-pointer select-none">
              Enable WebDAV server
            </label>
          </div>
        </div>

        <div className="space-y-1 max-w-xs">
          <label className="text-xs font-medium text-gray-600">Port</label>
          <Input type="number" placeholder="8080" value={serverPort} onChange={(e) => setServerPort(Number(e.target.value))}/>
        </div>

      </div>

      {/* ── Receiver PC: Pull backups from source ── */}
      <div className="space-y-3 border rounded-lg p-4">
        <p className="text-sm font-semibold text-gray-800">Receiver PC — Pull Backups</p>
        <p className="text-xs text-gray-500">
          Enable this on the backup PC to pull backup files from the source PC's WebDAV server
          at a scheduled time each day.
        </p>

        <div className="flex flex-wrap items-center gap-4">
          <div className="flex items-center gap-2">
            <Switch id="rclone-receiver-toggle" checked={receiverEnabled} onCheckedChange={setReceiverEnabled}/>
            <label htmlFor="rclone-receiver-toggle" className="text-sm font-medium text-gray-700 cursor-pointer select-none">
              Enable daily pull
            </label>
          </div>

          <div className="flex items-center gap-2">
            <label className="text-sm text-gray-600 whitespace-nowrap">at</label>
            <select className="border rounded px-2 py-1 text-sm text-gray-700 bg-white" value={receiverSyncHour} onChange={(e) => setReceiverSyncHour(Number(e.target.value))}>
              {HOUR_OPTIONS.map((o) => (<option key={o.value} value={o.value}>
                  {o.label}
                </option>))}
            </select>
          </div>
        </div>

        <div className="grid grid-cols-1 md:grid-cols-2 gap-3">
          <div className="space-y-1">
            <label className="text-xs font-medium text-gray-600">Source PC IP</label>
            <Input placeholder="192.168.0.94" value={sourceIp} onChange={(e) => setSourceIp(e.target.value)}/>
          </div>
          <div className="space-y-1">
            <label className="text-xs font-medium text-gray-600">Source PC Port</label>
            <Input type="number" placeholder="8080" value={sourcePort} onChange={(e) => setSourcePort(Number(e.target.value))}/>
          </div>
        </div>

        <div className="flex gap-2">
          <Button variant="outline" size="sm" onClick={() => pullNowMutation.mutate()} disabled={pullNowMutation.isPending || !sourceIp}>
            <RotateCcw className="h-4 w-4 mr-1"/>
            {pullNowMutation.isPending ? "Pulling..." : "Pull Now"}
          </Button>
        </div>

        <RcloneSyncStatus />
      </div>

      {/* ── Auto-Import: restore latest backup to database ── */}
      <div className="space-y-3 border rounded-lg p-4">
        <p className="text-sm font-semibold text-gray-800">Auto-Import Database</p>
        <p className="text-xs text-gray-500">
          Automatically restore the latest backup file from the <code>backups/</code> folder
          into this PC's database after rclone finishes pulling.
        </p>

        <div className="flex flex-wrap items-center gap-4">
          <div className="flex items-center gap-2">
            <Switch id="auto-import-toggle" checked={autoImportEnabled} onCheckedChange={setAutoImportEnabled}/>
            <label htmlFor="auto-import-toggle" className="text-sm font-medium text-gray-700 cursor-pointer select-none">
              Enable auto-import
            </label>
          </div>

          <div className="flex items-center gap-2">
            <label className="text-sm text-gray-600 whitespace-nowrap">at</label>
            <select className="border rounded px-2 py-1 text-sm text-gray-700 bg-white" value={autoImportHour} onChange={(e) => setAutoImportHour(Number(e.target.value))}>
              {HOUR_OPTIONS.map((o) => (<option key={o.value} value={o.value}>
                  {o.label}
                </option>))}
            </select>
          </div>
        </div>

        <div className="flex gap-2">
          <Button variant="outline" size="sm" onClick={() => importNowMutation.mutate()} disabled={importNowMutation.isPending}>
            <RotateCcw className="h-4 w-4 mr-1"/>
            {importNowMutation.isPending ? "Importing..." : "Import Now"}
          </Button>
        </div>

        <AutoImportStatus />
      </div>

      {/* Save all settings */}
      <Button onClick={() => saveMutation.mutate()} disabled={saveMutation.isPending}>
        {saveMutation.isPending ? "Saving..." : "Save Rclone Settings"}
      </Button>
    </div>);
}
function RcloneSyncStatus() {
    const { data } = useQuery({
        queryKey: ["/db/rclone-config"],
        queryFn: async () => {
            const res = await apiRequest("GET", "/api/database-management/rclone-config");
            return res.json();
        },
    });
    if (!data?.lastSyncAt)
        return null;
    const date = new Date(data.lastSyncAt).toLocaleString();
    const ok = data.lastSyncStatus === "success";
    return (<div className={`text-xs rounded p-2 ${ok ? "bg-green-50 text-green-700" : "bg-red-50 text-red-700"}`}>
      {ok ? "Last pull: " : "Last pull failed: "}{date}
      {!ok && data.lastSyncError && (<span className="block mt-0.5 text-red-500">{data.lastSyncError}</span>)}
    </div>);
}
function AutoImportStatus() {
    const { data } = useQuery({
        queryKey: ["/db/rclone-config"],
        queryFn: async () => {
            const res = await apiRequest("GET", "/api/database-management/rclone-config");
            return res.json();
        },
    });
    if (!data?.lastImportAt)
        return null;
    const date = new Date(data.lastImportAt).toLocaleString();
    const ok = data.lastImportStatus === "success";
    return (<div className={`text-xs rounded p-2 ${ok ? "bg-green-50 text-green-700" : "bg-red-50 text-red-700"}`}>
      {ok ? "Last import: " : "Last import failed: "}{date}
      {!ok && data.lastImportError && (<span className="block mt-0.5 text-red-500">{data.lastImportError}</span>)}
    </div>);
}
// ============================================================
// Tab 2: API Key (existing behavior)
// ============================================================
function ApiKeyBackupSection() {
    const { toast } = useToast();
    const [showKey, setShowKey] = useState(false);
    const [showReceiverKey, setShowReceiverKey] = useState(false);
    const [confirmRegenOpen, setConfirmRegenOpen] = useState(false);
    const [enabled, setEnabled] = useState(false);
    const [syncHour, setSyncHour] = useState(0);
    const [sourceUrl, setSourceUrl] = useState("");
    const [receiverApiKey, setReceiverApiKey] = useState("");
    const [formLoaded, setFormLoaded] = useState(false);
    const { data: keyData } = useQuery({
        queryKey: ["/db/network-backup-key"],
        queryFn: async () => {
            const res = await apiRequest("GET", "/api/database-management/network-backup-key");
            return res.json();
        },
    });
    const { data: syncConfig } = useQuery({
        queryKey: ["/db/network-sync-config"],
        queryFn: async () => {
            const res = await apiRequest("GET", "/api/database-management/network-sync-config");
            return res.json();
        },
    });
    useEffect(() => {
        if (syncConfig && !formLoaded) {
            setEnabled(syncConfig.enabled ?? false);
            setSyncHour(syncConfig.syncHour ?? 0);
            setSourceUrl(syncConfig.sourceUrl ?? "");
            setReceiverApiKey(syncConfig.apiKey ?? "");
            setFormLoaded(true);
        }
    }, [syncConfig, formLoaded]);
    const regenMutation = useMutation({
        mutationFn: async () => {
            const res = await apiRequest("POST", "/api/database-management/network-backup-key/regenerate");
            return res.json();
        },
        onSuccess: (data) => {
            queryClient.setQueryData(["/db/network-backup-key"], data);
            setConfirmRegenOpen(false);
            toast({ title: "API key regenerated", description: "Update the key on your backup PC." });
        },
        onError: () => {
            toast({ title: "Error", description: "Failed to regenerate key.", variant: "destructive" });
        },
    });
    const saveMutation = useMutation({
        mutationFn: async () => {
            const res = await apiRequest("PUT", "/api/database-management/network-sync-config", {
                enabled,
                syncHour,
                sourceUrl: sourceUrl.trim(),
                apiKey: receiverApiKey.trim(),
            });
            return res.json();
        },
        onSuccess: () => {
            queryClient.invalidateQueries({ queryKey: ["/db/network-sync-config"] });
            toast({ title: "Network sync settings saved" });
        },
        onError: () => {
            toast({ title: "Error", description: "Failed to save settings.", variant: "destructive" });
        },
    });
    const syncNowMutation = useMutation({
        mutationFn: async () => {
            const res = await apiRequest("POST", "/api/database-management/network-sync-now");
            if (!res.ok) {
                const body = await res.json();
                throw new Error(body.details || body.error || "Sync failed");
            }
            return res.json();
        },
        onSuccess: () => {
            queryClient.invalidateQueries({ queryKey: ["/db/network-sync-config"] });
            toast({ title: "Sync complete", description: "Database synced from source PC." });
        },
        onError: (err) => {
            queryClient.invalidateQueries({ queryKey: ["/db/network-sync-config"] });
            toast({ title: "Sync failed", description: err.message, variant: "destructive" });
        },
    });
    const displayKey = keyData?.apiKey ?? "";
    const maskedKey = displayKey ? "••••••••-••••-••••-••••-" + displayKey.slice(-12) : "—";
    return (<div className="space-y-6">
      {/* Source role */}
      <div className="space-y-3">
        <p className="text-sm font-semibold text-gray-800">This Machine's Backup Key</p>
        <p className="text-xs text-gray-500">
          Share this key with the backup PC so it can pull a copy of this machine's
          database. The key survives database restores (stored in a local file).
        </p>
        <div className="flex items-center gap-2">
          <Input readOnly value={showKey ? displayKey : maskedKey} className="font-mono text-sm"/>
          <Button variant="outline" size="icon" title={showKey ? "Hide key" : "Show key"} onClick={() => setShowKey((v) => !v)}>
            {showKey ? <EyeOff className="h-4 w-4"/> : <Eye className="h-4 w-4"/>}
          </Button>
          <Button variant="outline" size="icon" title="Copy to clipboard" onClick={() => {
            navigator.clipboard.writeText(displayKey);
            toast({ title: "Copied to clipboard" });
        }} disabled={!displayKey}>
            <Copy className="h-4 w-4"/>
          </Button>
          <Button variant="outline" size="icon" title="Regenerate key" onClick={() => setConfirmRegenOpen(true)} disabled={regenMutation.isPending}>
            <RefreshCw className="h-4 w-4"/>
          </Button>
        </div>
      </div>

      <div className="border-t"/>

      {/* Receiver role */}
      <div className="space-y-4">
        <p className="text-sm font-semibold text-gray-800">Sync from Another PC</p>
        <p className="text-xs text-gray-500">
          Configure this machine to pull a fresh copy of the database and all uploaded
          files (patient photos, cloud storage, documents) from another PC at a scheduled
          time each day. Enter the source PC's URL (e.g. http://192.168.0.94 — no port number) and the Backup Key shown in the source PC's Network Backup section.
        </p>

        <div className="flex flex-wrap items-center gap-4">
          <div className="flex items-center gap-2">
            <Switch id="network-sync-toggle" checked={enabled} onCheckedChange={setEnabled}/>
            <label htmlFor="network-sync-toggle" className="text-sm font-medium text-gray-700 cursor-pointer select-none">
              Enable daily sync
            </label>
          </div>

          <div className="flex items-center gap-2">
            <label className="text-sm text-gray-600 whitespace-nowrap">at</label>
            <select className="border rounded px-2 py-1 text-sm text-gray-700 bg-white" value={syncHour} onChange={(e) => setSyncHour(Number(e.target.value))}>
              {HOUR_OPTIONS.map((o) => (<option key={o.value} value={o.value}>
                  {o.label}
                </option>))}
            </select>
          </div>
        </div>

        <div className="space-y-2">
          <label className="text-xs font-medium text-gray-600">Source PC URL</label>
          <Input placeholder="http://192.168.0.94" value={sourceUrl} onChange={(e) => setSourceUrl(e.target.value)}/>
        </div>

        <div className="space-y-2">
          <label className="text-xs font-medium text-gray-600">Source PC API Key</label>
          <div className="flex items-center gap-2">
            <Input type={showReceiverKey ? "text" : "password"} placeholder="Paste the key from the source PC" value={receiverApiKey} onChange={(e) => setReceiverApiKey(e.target.value)}/>
            <Button variant="outline" size="icon" title={showReceiverKey ? "Hide key" : "Show key"} onClick={() => setShowReceiverKey((v) => !v)} type="button">
              {showReceiverKey ? <EyeOff className="h-4 w-4"/> : <Eye className="h-4 w-4"/>}
            </Button>
          </div>
        </div>

        <div className="flex gap-2">
          <Button onClick={() => saveMutation.mutate()} disabled={saveMutation.isPending}>
            {saveMutation.isPending ? "Saving..." : "Save Settings"}
          </Button>
          <Button variant="outline" onClick={() => syncNowMutation.mutate()} disabled={syncNowMutation.isPending || !sourceUrl || !receiverApiKey} title="Pull and restore now — replaces this machine's database and uploads folder">
            <RotateCcw className="h-4 w-4 mr-1"/>
            {syncNowMutation.isPending ? "Syncing..." : "Sync Now"}
          </Button>
        </div>

        <ApiKeySyncStatus />
      </div>

      {/* Confirm regenerate dialog */}
      <AlertDialog open={confirmRegenOpen}>
        <AlertDialogContent>
          <AlertDialogHeader>
            <AlertDialogTitle>Regenerate backup key?</AlertDialogTitle>
            <AlertDialogDescription>
              The old key will stop working immediately. You will need to update the API key
              on any backup PC that is currently configured to sync from this machine.
            </AlertDialogDescription>
          </AlertDialogHeader>
          <AlertDialogFooter>
            <AlertDialogCancel onClick={() => setConfirmRegenOpen(false)}>Cancel</AlertDialogCancel>
            <AlertDialogAction onClick={() => regenMutation.mutate()} disabled={regenMutation.isPending}>
              Regenerate
            </AlertDialogAction>
          </AlertDialogFooter>
        </AlertDialogContent>
      </AlertDialog>
    </div>);
}
function ApiKeySyncStatus() {
    const { data } = useQuery({
        queryKey: ["/db/network-sync-config"],
        queryFn: async () => {
            const res = await apiRequest("GET", "/api/database-management/network-sync-config");
            return res.json();
        },
    });
    if (!data?.lastSyncAt)
        return null;
    const date = new Date(data.lastSyncAt).toLocaleString();
    const ok = data.lastSyncStatus === "success";
    return (<div className={`text-xs rounded p-2 ${ok ? "bg-green-50 text-green-700" : "bg-red-50 text-red-700"}`}>
      {ok ? "Last sync: " : "Last sync failed: "}{date}
      {!ok && data.lastSyncError && (<span className="block mt-0.5 text-red-500">{data.lastSyncError}</span>)}
    </div>);
}
