mirror of
https://github.com/open-webui/open-webui.git
synced 2026-08-24 14:34:51 -06:00
revert: pdf gen
This commit is contained in:
Timothy J. Baek
@@ -56,8 +56,17 @@ class ChatForm(BaseModel):
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async def download_chat_as_pdf(
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form_data: ChatTitleMessagesForm,
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):
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response = PDFGenerator(form_data).generate_chat_pdf()
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return response
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try:
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pdf_bytes = PDFGenerator(form_data).generate_chat_pdf()
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return Response(
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content=pdf_bytes,
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media_type="application/pdf",
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headers={"Content-Disposition": "attachment;filename=chat.pdf"},
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)
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except Exception as e:
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print(e)
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raise HTTPException(status_code=400, detail=str(e))
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@router.get("/db/download")
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@@ -230,6 +230,8 @@ if FROM_INIT_PY:
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DATA_DIR = Path(os.getenv("DATA_DIR", OPEN_WEBUI_DIR / "data"))
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STATIC_DIR = Path(os.getenv("STATIC_DIR", OPEN_WEBUI_DIR / "static"))
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FONTS_DIR = Path(os.getenv("FONTS_DIR", OPEN_WEBUI_DIR / "static" / "fonts"))
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FRONTEND_BUILD_DIR = Path(os.getenv("FRONTEND_BUILD_DIR", BASE_DIR / "build")).resolve()
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@@ -1,190 +1,230 @@
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/* HTML and Body */
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html {
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box-sizing: border-box;
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font-size: 14px; /* Default font size */
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line-height: 1.5;
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@font-face {
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font-family: 'NotoSans';
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src: url('fonts/NotoSans-Variable.ttf');
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}
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*, *::before, *::after {
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box-sizing: inherit;
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@font-face {
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font-family: 'NotoSansJP';
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src: url('fonts/NotoSansJP-Variable.ttf');
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}
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@font-face {
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font-family: 'NotoSansKR';
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src: url('fonts/NotoSansKR-Variable.ttf');
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}
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@font-face {
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font-family: 'NotoSansSC';
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src: url('fonts/NotoSansSC-Variable.ttf');
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}
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@font-face {
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font-family: 'NotoSansSC-Regular';
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src: url('fonts/NotoSansSC-Regular.ttf');
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}
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html {
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font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'NotoSans', 'NotoSansJP', 'NotoSansKR',
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'NotoSansSC', 'STSong-Light', 'MSung-Light', 'HeiseiMin-W3', 'HYSMyeongJo-Medium', Roboto,
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'Helvetica Neue', Arial, sans-serif;
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font-size: 14px; /* Default font size */
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line-height: 1.5;
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}
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*,
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*::before,
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*::after {
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box-sizing: inherit;
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}
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body {
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margin: 0;
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font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
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color: #212529;
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background-color: #fff;
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width: auto;
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margin: 0;
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color: #212529;
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background-color: #fff;
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width: auto;
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}
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/* Typography */
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h1, h2, h3, h4, h5, h6 {
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font-weight: 500;
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margin: 0;
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h1,
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h2,
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h3,
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h4,
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h5,
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h6 {
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font-weight: 500;
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margin: 0;
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}
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h1 {
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font-size: 2.5rem;
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font-size: 2.5rem;
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}
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h2 {
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font-size: 2rem;
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font-size: 2rem;
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}
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h3 {
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font-size: 1.75rem;
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font-size: 1.75rem;
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}
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h4 {
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font-size: 1.5rem;
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font-size: 1.5rem;
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}
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h5 {
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font-size: 1.25rem;
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font-size: 1.25rem;
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}
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h6 {
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font-size: 1rem;
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font-size: 1rem;
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}
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p {
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margin-top: 0;
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margin-bottom: 1rem;
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margin-top: 0;
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margin-bottom: 1rem;
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}
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/* Grid System */
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.container {
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width: 100%;
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padding-right: 15px;
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padding-left: 15px;
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margin-right: auto;
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margin-left: auto;
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width: 100%;
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padding-right: 15px;
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padding-left: 15px;
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margin-right: auto;
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margin-left: auto;
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}
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/* Utilities */
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.text-center {
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text-align: center;
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text-align: center;
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}
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/* Additional Text Utilities */
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.text-muted {
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color: #6c757d; /* Muted text color */
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color: #6c757d; /* Muted text color */
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}
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/* Small Text */
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small {
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font-size: 80%; /* Smaller font size relative to the base */
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color: #6c757d; /* Lighter text color for secondary information */
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margin-bottom: 0;
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margin-top: 0;
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font-size: 80%; /* Smaller font size relative to the base */
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color: #6c757d; /* Lighter text color for secondary information */
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margin-bottom: 0;
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margin-top: 0;
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}
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/* Strong Element Styles */
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strong {
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font-weight: bolder; /* Ensures the text is bold */
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color: inherit; /* Inherits the color from its parent element */
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font-weight: bolder; /* Ensures the text is bold */
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color: inherit; /* Inherits the color from its parent element */
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}
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/* link */
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a {
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color: #007bff;
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text-decoration: none;
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background-color: transparent;
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color: #007bff;
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text-decoration: none;
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background-color: transparent;
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}
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a:hover {
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color: #0056b3;
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text-decoration: underline;
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color: #0056b3;
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text-decoration: underline;
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}
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/* General styles for lists */
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ol, ul, li {
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padding-left: 40px; /* Increase padding to move bullet points to the right */
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margin-left: 20px; /* Indent lists from the left */
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ol,
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ul,
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li {
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padding-left: 40px; /* Increase padding to move bullet points to the right */
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margin-left: 20px; /* Indent lists from the left */
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}
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/* Ordered list styles */
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ol {
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list-style-type: decimal; /* Use numbers for ordered lists */
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margin-bottom: 10px; /* Space after each list */
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list-style-type: decimal; /* Use numbers for ordered lists */
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margin-bottom: 10px; /* Space after each list */
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}
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ol li {
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margin-bottom: 0.5rem; /* Space between ordered list items */
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margin-bottom: 0.5rem; /* Space between ordered list items */
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}
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/* Unordered list styles */
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ul {
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list-style-type: disc; /* Use bullets for unordered lists */
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margin-bottom: 10px; /* Space after each list */
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list-style-type: disc; /* Use bullets for unordered lists */
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margin-bottom: 10px; /* Space after each list */
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}
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ul li {
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margin-bottom: 0.5rem; /* Space between unordered list items */
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margin-bottom: 0.5rem; /* Space between unordered list items */
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}
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/* List item styles */
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li {
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margin-bottom: 5px; /* Space between list items */
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line-height: 1.5; /* Line height for better readability */
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margin-bottom: 5px; /* Space between list items */
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line-height: 1.5; /* Line height for better readability */
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}
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/* Nested lists */
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ol ol, ol ul, ul ol, ul ul {
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padding-left: 20px;
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margin-left: 30px; /* Further indent nested lists */
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margin-bottom: 0; /* Remove extra margin at the bottom of nested lists */
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ol ol,
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ol ul,
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ul ol,
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ul ul {
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padding-left: 20px;
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margin-left: 30px; /* Further indent nested lists */
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margin-bottom: 0; /* Remove extra margin at the bottom of nested lists */
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}
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/* Code blocks */
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pre {
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background-color: #f4f4f4;
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padding: 10px;
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overflow-x: auto;
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max-width: 100%; /* Ensure it doesn't overflow the page */
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width: 80%; /* Set a specific width for a container-like appearance */
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margin: 0 1em; /* Center the pre block */
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box-sizing: border-box; /* Include padding in the width */
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border: 1px solid #ccc; /* Optional: Add a border for better definition */
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border-radius: 4px; /* Optional: Add rounded corners */
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background-color: #f4f4f4;
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padding: 10px;
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overflow-x: auto;
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max-width: 100%; /* Ensure it doesn't overflow the page */
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width: 80%; /* Set a specific width for a container-like appearance */
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margin: 0 1em; /* Center the pre block */
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box-sizing: border-box; /* Include padding in the width */
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border: 1px solid #ccc; /* Optional: Add a border for better definition */
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border-radius: 4px; /* Optional: Add rounded corners */
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}
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code {
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font-family: 'Courier New', Courier, monospace;
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background-color: #f4f4f4;
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padding: 2px 4px;
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border-radius: 4px;
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box-sizing: border-box; /* Include padding in the width */
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font-family: 'Courier New', Courier, monospace;
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background-color: #f4f4f4;
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padding: 2px 4px;
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border-radius: 4px;
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box-sizing: border-box; /* Include padding in the width */
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}
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.message {
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margin-top: 8px;
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margin-bottom: 8px;
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margin-top: 8px;
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margin-bottom: 8px;
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max-width: 100%;
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overflow-wrap: break-word;
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}
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/* Table Styles */
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table {
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width: 100%;
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margin-bottom: 1rem;
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color: #212529;
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border-collapse: collapse; /* Removes the space between borders */
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width: 100%;
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margin-bottom: 1rem;
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color: #212529;
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border-collapse: collapse; /* Removes the space between borders */
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}
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th, td {
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margin: 0;
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padding: 0.75rem;
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vertical-align: top;
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border-top: 1px solid #dee2e6;
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th,
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td {
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margin: 0;
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padding: 0.75rem;
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vertical-align: top;
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border-top: 1px solid #dee2e6;
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}
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thead th {
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vertical-align: bottom;
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border-bottom: 2px solid #dee2e6;
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vertical-align: bottom;
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border-bottom: 2px solid #dee2e6;
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}
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tbody + tbody {
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border-top: 2px solid #dee2e6;
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border-top: 2px solid #dee2e6;
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}
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/* markdown-section styles */
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@@ -199,8 +239,8 @@ tbody + tbody {
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.markdown-section pre,
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.markdown-section table,
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.markdown-section ul {
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/* Give most block elements margin top and bottom */
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margin-top: 1rem;
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/* Give most block elements margin top and bottom */
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margin-top: 1rem;
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}
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/* Remove top margin if it's the first child */
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@@ -215,69 +255,65 @@ tbody + tbody {
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.markdown-section pre:first-child,
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.markdown-section table:first-child,
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.markdown-section ul:first-child {
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margin-top: 0;
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margin-top: 0;
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}
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/* Remove top margin of <ul> following a <p> */
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.markdown-section p + ul {
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margin-top: 0;
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margin-top: 0;
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}
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/* Remove bottom margin of <p> if it is followed by a <ul> */
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/* Note: :has is not supported in CSS, so you would need JavaScript for this behavior */
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.markdown-section p {
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margin-bottom: 0;
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margin-bottom: 0;
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}
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/* Add a rule to reset margin-bottom for <p> not followed by <ul> */
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.markdown-section p + ul {
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margin-top: 0;
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margin-top: 0;
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}
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/* List item styles */
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.markdown-section li {
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padding: 2px;
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padding: 2px;
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}
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.markdown-section li p {
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margin-bottom: 0;
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padding: 0;
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margin-bottom: 0;
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padding: 0;
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}
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/* Avoid margins for nested lists */
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.markdown-section li > ul {
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margin-top: 0;
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margin-bottom: 0;
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margin-top: 0;
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margin-bottom: 0;
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}
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/* Table styles */
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.markdown-section table {
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width: 100%;
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border-collapse: collapse;
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margin: 1rem 0;
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width: 100%;
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border-collapse: collapse;
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margin: 1rem 0;
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}
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.markdown-section th,
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.markdown-section td {
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border: 1px solid #ddd;
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padding: 0.5rem;
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text-align: left;
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border: 1px solid #ddd;
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padding: 0.5rem;
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text-align: left;
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}
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.markdown-section th {
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background-color: #f2f2f2;
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background-color: #f2f2f2;
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}
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.markdown-section pre {
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padding: 10px;
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margin: 10px;
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padding: 10px;
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margin: 10px;
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}
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.markdown-section pre code {
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position: relative;
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color: rgb(172, 0, 95);
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position: relative;
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color: rgb(172, 0, 95);
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}
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@@ -4,9 +4,12 @@ from pathlib import Path
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from typing import Dict, Any, List
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from markdown import markdown
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from starlette.responses import Response
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from xhtml2pdf import pisa
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import site
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from fpdf import FPDF
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from open_webui.env import STATIC_DIR, FONTS_DIR
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from open_webui.apps.webui.models.chats import ChatTitleMessagesForm
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@@ -30,21 +33,31 @@ class PDFGenerator:
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self.html_body = None
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self.messages_html = None
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self.form_data = form_data
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self.css_style_file = Path("./backend/open_webui/static/assets/pdf-style.css")
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def build_html_message(self, message: Dict[str, Any]) -> str:
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self.css = Path(STATIC_DIR / "assets" / "pdf-style.css").read_text()
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def format_timestamp(self, timestamp: float) -> str:
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"""Convert a UNIX timestamp to a formatted date string."""
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try:
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date_time = datetime.fromtimestamp(timestamp)
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return date_time.strftime("%Y-%m-%d, %H:%M:%S")
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except (ValueError, TypeError) as e:
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# Log the error if necessary
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return ""
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def _build_html_message(self, message: Dict[str, Any]) -> str:
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"""Build HTML for a single message."""
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role = message.get("role", "user")
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content = message.get("content", "")
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timestamp = message.get('timestamp')
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timestamp = message.get("timestamp")
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model = message.get('model') if role == 'assistant' else ''
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model = message.get("model") if role == "assistant" else ""
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date_str = self.format_timestamp(timestamp) if timestamp else ''
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date_str = self.format_timestamp(timestamp) if timestamp else ""
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# extends pymdownx extension to convert markdown to html.
|
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# - https://facelessuser.github.io/pymdown-extensions/usage_notes/
|
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html_content = markdown(content, extensions=['pymdownx.extra'])
|
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html_content = markdown(content, extensions=["pymdownx.extra"])
|
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|
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html_message = f"""
|
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<div class="message">
|
||||
@@ -62,63 +75,35 @@ class PDFGenerator:
|
||||
"""
|
||||
return html_message
|
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|
||||
def create_pdf_from_html(self) -> bytes:
|
||||
def _fetch_resources(self, uri: str, rel: str) -> str:
|
||||
|
||||
print(str(STATIC_DIR / uri))
|
||||
return str(STATIC_DIR / uri)
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|
||||
def _create_pdf_from_html(self) -> bytes:
|
||||
"""Convert HTML content to PDF and return the bytes."""
|
||||
pdf_buffer = BytesIO()
|
||||
pisa_status = pisa.CreatePDF(src=self.html_body, dest=pdf_buffer)
|
||||
pisa_status = pisa.CreatePDF(
|
||||
src=self.html_body.encode("UTF-8"),
|
||||
dest=pdf_buffer,
|
||||
encoding="UTF-8",
|
||||
link_callback=self._fetch_resources,
|
||||
)
|
||||
if pisa_status.err:
|
||||
raise RuntimeError("Error generating PDF")
|
||||
|
||||
return pdf_buffer.getvalue()
|
||||
|
||||
def format_timestamp(self, timestamp: float) -> str:
|
||||
"""Convert a UNIX timestamp to a formatted date string."""
|
||||
try:
|
||||
date_time = datetime.fromtimestamp(timestamp)
|
||||
return date_time.strftime("%Y-%m-%d, %H:%M:%S")
|
||||
except (ValueError, TypeError) as e:
|
||||
# Log the error if necessary
|
||||
return ''
|
||||
|
||||
def generate_chat_pdf(self) -> Response:
|
||||
"""
|
||||
Generate a PDF from chat messages.
|
||||
|
||||
Returns:
|
||||
A FastAPI Response with the generated PDF or an error message.
|
||||
"""
|
||||
try:
|
||||
# Build HTML messages
|
||||
messages_html_list: List[str] = [self.build_html_message(msg) for msg in self.form_data.messages]
|
||||
self.messages_html = '<div>' + ''.join(messages_html_list) + '</div>'
|
||||
|
||||
# Generate full HTML body
|
||||
self.html_body = self.generate_html_body()
|
||||
|
||||
# Create PDF
|
||||
pdf_bytes = self.create_pdf_from_html()
|
||||
|
||||
# Return PDF as response
|
||||
return Response(
|
||||
content=pdf_bytes,
|
||||
media_type="application/pdf",
|
||||
headers={"Content-Disposition": "attachment;filename=chat.pdf"},
|
||||
)
|
||||
except RuntimeError as pdf_error:
|
||||
# Handle PDF generation errors
|
||||
return Response(content=str(pdf_error), status_code=500)
|
||||
except Exception as e:
|
||||
# Handle other unexpected errors
|
||||
return Response(content="An unexpected error occurred.", status_code=500)
|
||||
|
||||
def generate_html_body(self) -> str:
|
||||
def _generate_html_body(self) -> str:
|
||||
"""Generate the full HTML body for the PDF."""
|
||||
return f"""
|
||||
<html>
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
||||
<link rel="stylesheet" href="{self.css_style_file.as_posix()}">
|
||||
<style type="text/css">
|
||||
{self.css}
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<div class="container">
|
||||
@@ -132,3 +117,57 @@ class PDFGenerator:
|
||||
</body>
|
||||
</html>
|
||||
"""
|
||||
|
||||
def generate_chat_pdf(self) -> bytes:
|
||||
"""
|
||||
Generate a PDF from chat messages.
|
||||
"""
|
||||
try:
|
||||
global FONTS_DIR
|
||||
|
||||
pdf = FPDF()
|
||||
pdf.add_page()
|
||||
|
||||
# When running using `pip install` the static directory is in the site packages.
|
||||
if not FONTS_DIR.exists():
|
||||
FONTS_DIR = Path(site.getsitepackages()[0]) / "static/fonts"
|
||||
# When running using `pip install -e .` the static directory is in the site packages.
|
||||
# This path only works if `open-webui serve` is run from the root of this project.
|
||||
if not FONTS_DIR.exists():
|
||||
FONTS_DIR = Path("./backend/static/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.add_font("NotoSansSC", "", f"{FONTS_DIR}/NotoSansSC-Regular.ttf")
|
||||
|
||||
pdf.set_font("NotoSans", size=12)
|
||||
pdf.set_fallback_fonts(["NotoSansKR", "NotoSansJP", "NotoSansSC"])
|
||||
|
||||
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 self.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 bytes(pdf_bytes)
|
||||
except Exception as e:
|
||||
raise e
|
||||
|
||||
Reference in New Issue
Block a user