refac

backend/open_webui/routers/chats.py

@@ -2,6 +2,8 @@ import json
 import logging
 from typing import Optional
 import asyncio
+from fastapi.responses import StreamingResponse
+
 
 from open_webui.utils.misc import get_message_list
 from open_webui.socket.main import get_event_emitter
@@ -202,6 +204,9 @@ def get_session_user_chat_usage_stats(
 ############################
 
 
+CHAT_EXPORT_PAGE_ITEM_COUNT = 10
+
+
 class ChatStatsExportList(BaseModel):
     type: str = "chats"
     items: list[ChatStatsExport]
@@ -209,6 +214,140 @@ class ChatStatsExportList(BaseModel):
     page: int
 
 
+def _process_chat_for_export(chat) -> Optional[ChatStatsExport]:
+    try:
+        def get_message_content_length(message):
+            content = message.get("content", "")
+            if isinstance(content, str):
+                return len(content)
+            elif isinstance(content, list):
+                return sum(
+                    len(item.get("text", ""))
+                    for item in content
+                    if item.get("type") == "text"
+                )
+            return 0
+
+        messages_map = chat.chat.get("history", {}).get("messages", {})
+        message_id = chat.chat.get("history", {}).get("currentId")
+
+        history_models = {}
+        history_message_count = len(messages_map)
+        history_user_messages = []
+        history_assistant_messages = []
+
+        export_messages = {}
+        for key, message in messages_map.items():
+            try:
+                content_length = get_message_content_length(message)
+
+                # Extract rating safely
+                rating = message.get("annotation", {}).get("rating")
+                tags = message.get("annotation", {}).get("tags")
+
+                message_stat = MessageStats(
+                    id=message.get("id"),
+                    role=message.get("role"),
+                    model=message.get("model"),
+                    timestamp=message.get("timestamp"),
+                    content_length=content_length,
+                    token_count=None,  # Populate if available, e.g. message.get("info", {}).get("token_count")
+                    rating=rating,
+                    tags=tags,
+                )
+
+                export_messages[key] = message_stat
+
+                # --- Aggregation Logic (copied/adapted from usage stats) ---
+                role = message.get("role", "")
+                if role == "user":
+                    history_user_messages.append(message)
+                elif role == "assistant":
+                    history_assistant_messages.append(message)
+                    model = message.get("model")
+                    if model:
+                        if model not in history_models:
+                            history_models[model] = 0
+                        history_models[model] += 1
+            except Exception as e:
+                log.debug(f"Error processing message {key}: {e}")
+                continue
+
+        # Calculate Averages
+        average_user_message_content_length = (
+            sum(get_message_content_length(m) for m in history_user_messages)
+            / len(history_user_messages)
+            if history_user_messages
+            else 0
+        )
+
+        average_assistant_message_content_length = (
+            sum(get_message_content_length(m) for m in history_assistant_messages)
+            / len(history_assistant_messages)
+            if history_assistant_messages
+            else 0
+        )
+
+        # Response Times
+        response_times = []
+        for message in history_assistant_messages:
+            user_message_id = message.get("parentId", None)
+            if user_message_id and user_message_id in messages_map:
+                user_message = messages_map[user_message_id]
+                # Ensure timestamps exist
+                t1 = message.get("timestamp")
+                t0 = user_message.get("timestamp")
+                if t1 and t0:
+                    response_times.append(t1 - t0)
+
+        average_response_time = (
+            sum(response_times) / len(response_times) if response_times else 0
+        )
+
+        # Current Message List Logic (Main path)
+        message_list = get_message_list(messages_map, message_id)
+        message_count = len(message_list)
+        models = {}
+        for message in reversed(message_list):
+            if message.get("role") == "assistant":
+                model = message.get("model")
+                if model:
+                    if model not in models:
+                        models[model] = 0
+                    models[model] += 1
+
+        # Construct Aggregate Stats
+        stats = AggregateChatStats(
+            average_response_time=average_response_time,
+            average_user_message_content_length=average_user_message_content_length,
+            average_assistant_message_content_length=average_assistant_message_content_length,
+            models=models,
+            message_count=message_count,
+            history_models=history_models,
+            history_message_count=history_message_count,
+            history_user_message_count=len(history_user_messages),
+            history_assistant_message_count=len(history_assistant_messages),
+        )
+
+        # Construct Chat Body
+        chat_body = ChatBody(
+            history=ChatHistoryStats(messages=export_messages, currentId=message_id)
+        )
+
+        return ChatStatsExport(
+            id=chat.id,
+            user_id=chat.user_id,
+            created_at=chat.created_at,
+            updated_at=chat.updated_at,
+            tags=chat.meta.get("tags", []),
+            stats=stats,
+            chat=chat_body,
+        )
+    except Exception as e:
+        log.exception(f"Error exporting stats for chat {chat.id}: {e}")
+        return None
+
+
 def calculate_chat_stats(user_id, skip=0, limit=10, filter=None):
     if filter is None:
         filter = {}
@@ -221,145 +360,37 @@ def calculate_chat_stats(user_id, skip=0, limit=10, filter=None):
     )
 
     chat_stats_export_list = []
-
-    def get_message_content_length(message):
-        content = message.get("content", "")
-        if isinstance(content, str):
-            return len(content)
-        elif isinstance(content, list):
-            return sum(
-                len(item.get("text", ""))
-                for item in content
-                if item.get("type") == "text"
-            )
-        return 0
-
     for chat in result.items:
-        try:
+        chat_stat = _process_chat_for_export(chat)
-            messages_map = chat.chat.get("history", {}).get("messages", {})
+        if chat_stat:
-            message_id = chat.chat.get("history", {}).get("currentId")
-
-            history_models = {}
-            history_message_count = len(messages_map)
-            history_user_messages = []
-            history_assistant_messages = []
-
-            export_messages = {}
-            for key, message in messages_map.items():
-                try:
-                    content_length = get_message_content_length(message)
-
-                    # Extract rating safely
-                    rating = message.get("annotation", {}).get("rating")
-                    tags = message.get("annotation", {}).get("tags")
-
-                    message_stat = MessageStats(
-                        id=message.get("id"),
-                        role=message.get("role"),
-                        model=message.get("model"),
-                        timestamp=message.get("timestamp"),
-                        content_length=content_length,
-                        token_count=None,  # Populate if available, e.g. message.get("info", {}).get("token_count")
-                        rating=rating,
-                        tags=tags,
-                    )
-
-                    export_messages[key] = message_stat
-
-                    # --- Aggregation Logic (copied/adapted from usage stats) ---
-                    role = message.get("role", "")
-                    if role == "user":
-                        history_user_messages.append(message)
-                    elif role == "assistant":
-                        history_assistant_messages.append(message)
-                        model = message.get("model")
-                        if model:
-                            if model not in history_models:
-                                history_models[model] = 0
-                            history_models[model] += 1
-                except Exception as e:
-                    log.debug(f"Error processing message {key}: {e}")
-                    continue
-
-            # Calculate Averages
-            average_user_message_content_length = (
-                sum(get_message_content_length(m) for m in history_user_messages)
-                / len(history_user_messages)
-                if history_user_messages
-                else 0
-            )
-
-            average_assistant_message_content_length = (
-                sum(get_message_content_length(m) for m in history_assistant_messages)
-                / len(history_assistant_messages)
-                if history_assistant_messages
-                else 0
-            )
-
-            # Response Times
-            response_times = []
-            for message in history_assistant_messages:
-                user_message_id = message.get("parentId", None)
-                if user_message_id and user_message_id in messages_map:
-                    user_message = messages_map[user_message_id]
-                    # Ensure timestamps exist
-                    t1 = message.get("timestamp")
-                    t0 = user_message.get("timestamp")
-                    if t1 and t0:
-                        response_times.append(t1 - t0)
-
-            average_response_time = (
-                sum(response_times) / len(response_times) if response_times else 0
-            )
-
-            # Current Message List Logic (Main path)
-            message_list = get_message_list(messages_map, message_id)
-            message_count = len(message_list)
-            models = {}
-            for message in reversed(message_list):
-                if message.get("role") == "assistant":
-                    model = message.get("model")
-                    if model:
-                        if model not in models:
-                            models[model] = 0
-                        models[model] += 1
-
-            # Construct Aggregate Stats
-            stats = AggregateChatStats(
-                average_response_time=average_response_time,
-                average_user_message_content_length=average_user_message_content_length,
-                average_assistant_message_content_length=average_assistant_message_content_length,
-                models=models,
-                message_count=message_count,
-                history_models=history_models,
-                history_message_count=history_message_count,
-                history_user_message_count=len(history_user_messages),
-                history_assistant_message_count=len(history_assistant_messages),
-            )
-
-            # Construct Chat Body
-            chat_body = ChatBody(
-                history=ChatHistoryStats(messages=export_messages, currentId=message_id)
-            )
-
-            chat_stat = ChatStatsExport(
-                id=chat.id,
-                user_id=chat.user_id,
-                created_at=chat.created_at,
-                updated_at=chat.updated_at,
-                tags=chat.meta.get("tags", []),
-                stats=stats,
-                chat=chat_body,
-            )
-
             chat_stats_export_list.append(chat_stat)
-        except Exception as e:
-            log.debug(f"Error exporting stats for chat {chat.id}: {e}")
-            continue
 
     return chat_stats_export_list, result.total
 
 
+async def generate_chat_stats_jsonl_generator(user_id, filter):
+    skip = 0
+    limit = CHAT_EXPORT_PAGE_ITEM_COUNT
+
+    while True:
+        # Use asyncio.to_thread to make the blocking DB call non-blocking
+        result = await asyncio.to_thread(
+            Chats.get_chats_by_user_id, user_id, filter=filter, skip=skip, limit=limit
+        )
+        if not result.items:
+            break
+
+        for chat in result.items:
+            try:
+                chat_stat = await asyncio.to_thread(_process_chat_for_export, chat)
+                if chat_stat:
+                    yield chat_stat.model_dump_json() + "\n"
+            except Exception as e:
+                 log.exception(f"Error processing chat {chat.id}: {e}")
+
+        skip += limit
+
+
 @router.get("/stats/export", response_model=ChatStatsExportList)
 async def export_chat_stats(
     request: Request,
@@ -367,6 +398,7 @@ async def export_chat_stats(
     start_time: Optional[int] = None,
     end_time: Optional[int] = None,
     page: Optional[int] = 1,
+    stream: bool = False,
     user=Depends(get_verified_user),
 ):
     # Check if the user has permission to share/export chats
@@ -379,9 +411,6 @@ async def export_chat_stats(
         )
 
     try:
-        limit = 10  # Fixed limit for export
-        skip = (page - 1) * limit
-
         # Fetch chats with date filtering
         filter = {"order_by": "created_at", "direction": "asc"}
 
@@ -395,11 +424,25 @@ async def export_chat_stats(
         if end_time:
             filter["end_time"] = end_time
 
-        chat_stats_export_list, total = await asyncio.to_thread(
+        if stream:
-            calculate_chat_stats, user.id, skip, limit, filter
+            return StreamingResponse(
-        )
+                generate_chat_stats_jsonl_generator(user.id, filter),
+                media_type="application/x-ndjson",
+                headers={
+                    "Content-Disposition": f"attachment; filename=chat-stats-export-{user.id}.jsonl"
+                },
+            )
+        else:
+            limit = CHAT_EXPORT_PAGE_ITEM_COUNT
+            skip = (page - 1) * limit
 
-        return ChatStatsExportList(items=chat_stats_export_list, total=total, page=page)
+            chat_stats_export_list, total = await asyncio.to_thread(
+                calculate_chat_stats, user.id, skip, limit, filter
+            )
+
+            return ChatStatsExportList(
+                items=chat_stats_export_list, total=total, page=page
+            )
 
     except Exception as e:
         log.debug(f"Error exporting chat stats: {e}")

src/lib/apis/chats/index.ts

@@ -1206,4 +1206,36 @@ export const exportChatStats = async (token: string, page: number = 1, params: o
 	return res;
 };
 
+export const downloadChatStats = async (
+	token: string = '',
+	chat_id: string | null = null,
+	start_time: number | null = null,
+	end_time: number | null = null
+): Promise<[Response | null, AbortController]> => {
+	const controller = new AbortController();
+	let error = null;
 
+	let url = `${WEBUI_API_BASE_URL}/chats/stats/export?stream=true`;
+	if (chat_id) url += `&chat_id=${chat_id}`;
+	if (start_time) url += `&start_time=${start_time}`;
+	if (end_time) url += `&end_time=${end_time}`;
+
+	const res = await fetch(url, {
+		signal: controller.signal,
+		method: 'GET',
+		headers: {
+			'Content-Type': 'application/json',
+			Authorization: `Bearer ${token}`
+		}
+	}).catch((err) => {
+		console.error(err);
+		error = err;
+		return null;
+	});
+
+	if (error) {
+		throw error;
+	}
+
+	return [res, controller];
+};

src/lib/components/chat/Settings/SyncStatsModal.svelte

@@ -4,7 +4,7 @@
 	import { toast } from 'svelte-sonner';
 	import { onMount, getContext } from 'svelte';
 
-	import { exportChatStats } from '$lib/apis/chats';
+	import { exportChatStats, downloadChatStats } from '$lib/apis/chats';
 	import { getVersion } from '$lib/apis';
 
 	import Check from '$lib/components/icons/Check.svelte';
@@ -18,7 +18,19 @@
 	export let show = false;
 	export let eventData = null;
 
-	let loading = false;
+	let syncing = false;
+	let downloading = false;
+	let downloadController = null;
+
+	const cancelDownload = () => {
+		if (downloadController) {
+			downloadController.abort();
+			downloading = false;
+			syncing = false;
+			downloadController = null;
+		}
+	};
+
 	let completed = false;
 	let processedItemsCount = 0;
 	let total = 0;
@@ -42,7 +54,7 @@
 			);
 		}
 
-		loading = true;
+		syncing = true;
 		processedItemsCount = 0;
 		total = 0;
 		let page = 1;
@@ -89,9 +101,106 @@
 				'*'
 			);
 		}
-		loading = false;
+		syncing = false;
 		completed = true;
 	};
+
+	const downloadHandler = async () => {
+		if (downloading) {
+			cancelDownload();
+			return;
+		}
+
+		// Get total count first
+		const _res = await exportChatStats(localStorage.token, 1, eventData?.searchParams ?? {}).catch(() => {
+			return null;
+		});
+		if (_res) {
+			total = _res.total;
+		}
+
+		downloading = true;
+		syncing = true;
+		processedItemsCount = 0;
+		const resVersion = await getVersion(localStorage.token).catch(() => {
+			return null;
+		});
+
+		const version = resVersion ? resVersion.version : '0.0.0';
+		const filename = `open-webui-stats-${version}-${Date.now()}.json`;
+
+		const searchParams = eventData?.searchParams ?? {};
+		const [res, controller] = await downloadChatStats(
+			localStorage.token,
+			searchParams.chat_id,
+			searchParams.start_time,
+			searchParams.end_time
+		).catch((error) => {
+			toast.error(error?.detail || $i18n.t('An error occurred while downloading your stats.'));
+			return [null, null];
+		});
+
+		if (res) {
+			downloadController = controller;
+			const reader = res.body.getReader();
+			const decoder = new TextDecoder();
+
+			const items = [];
+			let buffer = '';
+
+			try {
+				while (true) {
+					const { done, value } = await reader.read();
+					if (done) break;
+
+					buffer += decoder.decode(value, { stream: true });
+					const lines = buffer.split('\n');
+					buffer = lines.pop() || '';
+
+					for (const line of lines) {
+						if (line.trim() !== '') {
+							try {
+								items.push(JSON.parse(line));
+								processedItemsCount++;
+							} catch (e) {
+								console.error('Error parsing line', e);
+							}
+						}
+					}
+				}
+
+				if (buffer.trim() !== '') {
+					try {
+						items.push(JSON.parse(buffer));
+						processedItemsCount++;
+					} catch (e) {
+						console.error('Error parsing buffer', e);
+					}
+				}
+
+				if (downloading) {
+					const blob = new Blob([JSON.stringify(items)], { type: 'application/json' });
+					const url = window.URL.createObjectURL(blob);
+					const a = document.createElement('a');
+					a.href = url;
+					a.download = filename;
+					document.body.appendChild(a);
+					a.click();
+					window.URL.revokeObjectURL(url);
+				}
+			} catch (e) {
+				console.error('Download error:', e);
+			} finally {
+				downloading = false;
+				syncing = false;
+				downloadController = null;
+			}
+		} else {
+			downloading = false;
+			syncing = false;
+			downloadController = null;
+		}
+	};
 </script>
 
 <Modal bind:show size="md">
@@ -127,7 +236,7 @@
 					on:click={() => {
 						show = false;
 					}}
-					disabled={loading}
+					disabled={syncing}
 				>
 					<XMark className={'size-5'} />
 				</button>
@@ -166,10 +275,12 @@
 					</ul>
 				</div>
 
-				{#if loading}
+				{#if syncing}
-					<div class="mt-3">
+					<div class="mt-3 mx-1.5">
 						<div class="text-xs text-gray-500 mb-1 flex justify-between">
-							<div>{$i18n.t('Syncing stats...')}</div>
+							<div>
+								{downloading ? $i18n.t('Downloading stats...') : $i18n.t('Syncing stats...')}
+							</div>
 							<div>{Math.round((processedItemsCount / total) * 100) || 0}%</div>
 						</div>
 						<div class="w-full bg-gray-200 rounded-full h-1.5 dark:bg-gray-700">
@@ -181,23 +292,51 @@
 					</div>
 				{/if}
 
-				<div class="mt-5 flex justify-end gap-2">
+				<div class="mt-5 flex justify-between items-center gap-2">
+					<div class="text-xs text-gray-400 text-center mr-auto">
+						<button
+							class=" hover:underline px-2"
+							type="button"
+							on:click={async () => {
+								downloadHandler();
+							}}
+						>
+							{downloading ? $i18n.t('Stop Download') : $i18n.t('Download as JSON')}
+						</button>
+					</div>
+
 					<button
 						class="px-4 py-2 rounded-full text-sm font-medium bg-gray-100 hover:bg-gray-200 dark:bg-gray-800 dark:hover:bg-gray-700 text-gray-900 dark:text-gray-100 transition disabled:cursor-not-allowed"
-						on:click={() => (show = false)}
+						on:click={() => {
-						disabled={loading}
+							if (syncing) {
+								cancelDownload();
+								if (downloading) {
+									cancelDownload();
+								} else {
+									syncing = false;
+								}
+							} else {
+								show = false;
+							}
+						}}
 					>
 						{$i18n.t('Cancel')}
 					</button>
-					<button
-						class="px-4 py-2 rounded-full text-sm font-medium bg-black hover:bg-gray-900 dark:bg-white dark:hover:bg-gray-100 text-white dark:text-black transition flex items-center gap-2 disabled:cursor-not-allowed"
-						on:click={syncStats}
-						disabled={loading}
-					>
-						{$i18n.t('Sync')}
 
-						{#if loading}
+					<button
-							<Spinner className="size-4" />
+						class="px-3.5 py-1.5 text-sm font-medium bg-black hover:bg-gray-900 text-white dark:bg-white dark:text-black dark:hover:bg-gray-100 transition-colors rounded-full"
+						on:click={() => {
+							syncStats();
+						}}
+						disabled={syncing}
+					>
+						{#if syncing && !downloading}
+							<div class="flex items-center gap-2">
+								<Spinner className="size-3" />
+								<span>{$i18n.t('Syncing...')}</span>
+							</div>
+						{:else}
+							{$i18n.t('Sync')}
 						{/if}
 					</button>
 				</div>

src/routes/+layout.svelte

@@ -91,7 +91,7 @@
 
 	let showRefresh = false;
 
-	let showSyncStatsModal = false;
+	let showSyncStatsModal = true;
 	let syncStatsEventData = null;
 
 	let heartbeatInterval = null;