open-webui/backend/apps/web/routers/utils.py
2024-04-22 19:55:46 +01:00

103 lines
2.8 KiB
Python

from fastapi import APIRouter, UploadFile, File, Response
from fastapi import Depends, HTTPException, status
from starlette.responses import StreamingResponse, FileResponse
from pydantic import BaseModel
from fpdf import FPDF
import markdown
from utils.utils import get_admin_user
from utils.misc import calculate_sha256, get_gravatar_url
from config import OLLAMA_BASE_URLS, DATA_DIR, UPLOAD_DIR
from constants import ERROR_MESSAGES
from typing import List
router = APIRouter()
@router.get("/gravatar")
async def get_gravatar(
email: str,
):
return get_gravatar_url(email)
class MarkdownForm(BaseModel):
md: str
@router.post("/markdown")
async def get_html_from_markdown(
form_data: MarkdownForm,
):
return {"html": markdown.markdown(form_data.md)}
class ChatForm(BaseModel):
title: str
messages: List[dict]
@router.post("/pdf")
async def download_chat_as_pdf(
form_data: ChatForm,
):
pdf = FPDF()
pdf.add_page()
STATIC_DIR = "./static"
FONTS_DIR = f"{STATIC_DIR}/fonts"
pdf.add_font("NotoSans", "", f"{FONTS_DIR}/NotoSans-Regular.ttf")
pdf.add_font("NotoSans", "b", f"{FONTS_DIR}/NotoSans-Bold.ttf")
pdf.add_font("NotoSans", "i", f"{FONTS_DIR}/NotoSans-Italic.ttf")
pdf.add_font("NotoSansKR", "", f"{FONTS_DIR}/NotoSansKR-Regular.ttf")
pdf.add_font("NotoSansJP", "", f"{FONTS_DIR}/NotoSansJP-Regular.ttf")
pdf.set_font("NotoSans", size=12)
pdf.set_fallback_fonts(["NotoSansKR", "NotoSansJP"])
pdf.set_auto_page_break(auto=True, margin=15)
# Adjust the effective page width for multi_cell
effective_page_width = (
pdf.w - 2 * pdf.l_margin - 10
) # Subtracted an additional 10 for extra padding
# Add chat messages
for message in form_data.messages:
role = message["role"]
content = message["content"]
pdf.set_font("NotoSans", "B", size=14) # Bold for the role
pdf.multi_cell(effective_page_width, 10, f"{role.upper()}", 0, "L")
pdf.ln(1) # Extra space between messages
pdf.set_font("NotoSans", size=10) # Regular for content
pdf.multi_cell(effective_page_width, 6, content, 0, "L")
pdf.ln(1.5) # Extra space between messages
# Save the pdf with name .pdf
pdf_bytes = pdf.output()
return Response(
content=bytes(pdf_bytes),
media_type="application/pdf",
headers={"Content-Disposition": f"attachment;filename=chat.pdf"},
)
@router.get("/db/download")
async def download_db(user=Depends(get_admin_user)):
if not ENABLE_ADMIN_EXPORT:
raise HTTPException(
status_code=status.HTTP_401_UNAUTHORIZED,
detail=ERROR_MESSAGES.ACCESS_PROHIBITED,
)
return FileResponse(
f"{DATA_DIR}/webui.db",
media_type="application/octet-stream",
filename="webui.db",
)