345 lines
10 KiB
Python
345 lines
10 KiB
Python
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import json
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from typing import Any, Dict, Optional
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from fastapi.encoders import jsonable_encoder
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from starlette.responses import HTMLResponse
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from typing_extensions import Annotated, Doc
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swagger_ui_default_parameters: Annotated[
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Dict[str, Any],
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Doc(
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"""
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Default configurations for Swagger UI.
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You can use it as a template to add any other configurations needed.
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"""
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),
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] = {
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"dom_id": "#swagger-ui",
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"layout": "BaseLayout",
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"deepLinking": True,
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"showExtensions": True,
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"showCommonExtensions": True,
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}
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def get_swagger_ui_html(
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*,
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openapi_url: Annotated[
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str,
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Doc(
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"""
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The OpenAPI URL that Swagger UI should load and use.
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This is normally done automatically by FastAPI using the default URL
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`/openapi.json`.
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"""
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),
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],
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title: Annotated[
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str,
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Doc(
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"""
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The HTML `<title>` content, normally shown in the browser tab.
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"""
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),
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],
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swagger_js_url: Annotated[
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str,
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Doc(
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"""
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The URL to use to load the Swagger UI JavaScript.
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It is normally set to a CDN URL.
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"""
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),
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] = "https://cdn.jsdelivr.net/npm/swagger-ui-dist@5/swagger-ui-bundle.js",
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swagger_css_url: Annotated[
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str,
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Doc(
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"""
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The URL to use to load the Swagger UI CSS.
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It is normally set to a CDN URL.
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"""
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),
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] = "https://cdn.jsdelivr.net/npm/swagger-ui-dist@5/swagger-ui.css",
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swagger_favicon_url: Annotated[
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str,
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Doc(
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"""
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The URL of the favicon to use. It is normally shown in the browser tab.
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"""
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),
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] = "https://fastapi.tiangolo.com/img/favicon.png",
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oauth2_redirect_url: Annotated[
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Optional[str],
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Doc(
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"""
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The OAuth2 redirect URL, it is normally automatically handled by FastAPI.
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"""
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),
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] = None,
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init_oauth: Annotated[
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Optional[Dict[str, Any]],
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Doc(
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"""
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A dictionary with Swagger UI OAuth2 initialization configurations.
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"""
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),
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] = None,
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swagger_ui_parameters: Annotated[
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Optional[Dict[str, Any]],
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Doc(
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"""
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Configuration parameters for Swagger UI.
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It defaults to [swagger_ui_default_parameters][fastapi.openapi.docs.swagger_ui_default_parameters].
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"""
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),
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] = None,
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) -> HTMLResponse:
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"""
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Generate and return the HTML that loads Swagger UI for the interactive
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API docs (normally served at `/docs`).
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You would only call this function yourself if you needed to override some parts,
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for example the URLs to use to load Swagger UI's JavaScript and CSS.
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Read more about it in the
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[FastAPI docs for Configure Swagger UI](https://fastapi.tiangolo.com/how-to/configure-swagger-ui/)
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and the [FastAPI docs for Custom Docs UI Static Assets (Self-Hosting)](https://fastapi.tiangolo.com/how-to/custom-docs-ui-assets/).
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"""
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current_swagger_ui_parameters = swagger_ui_default_parameters.copy()
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if swagger_ui_parameters:
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current_swagger_ui_parameters.update(swagger_ui_parameters)
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html = f"""
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<!DOCTYPE html>
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<html>
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<head>
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<link type="text/css" rel="stylesheet" href="{swagger_css_url}">
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<link rel="shortcut icon" href="{swagger_favicon_url}">
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<title>{title}</title>
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</head>
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<body>
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<div id="swagger-ui">
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</div>
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<script src="{swagger_js_url}"></script>
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<!-- `SwaggerUIBundle` is now available on the page -->
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<script>
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const ui = SwaggerUIBundle({{
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url: '{openapi_url}',
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"""
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for key, value in current_swagger_ui_parameters.items():
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html += f"{json.dumps(key)}: {json.dumps(jsonable_encoder(value))},\n"
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if oauth2_redirect_url:
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html += f"oauth2RedirectUrl: window.location.origin + '{oauth2_redirect_url}',"
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html += """
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presets: [
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SwaggerUIBundle.presets.apis,
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SwaggerUIBundle.SwaggerUIStandalonePreset
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],
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})"""
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if init_oauth:
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html += f"""
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ui.initOAuth({json.dumps(jsonable_encoder(init_oauth))})
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"""
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html += """
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</script>
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</body>
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</html>
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"""
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return HTMLResponse(html)
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def get_redoc_html(
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*,
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openapi_url: Annotated[
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str,
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Doc(
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"""
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The OpenAPI URL that ReDoc should load and use.
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This is normally done automatically by FastAPI using the default URL
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`/openapi.json`.
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"""
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),
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],
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title: Annotated[
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str,
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Doc(
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"""
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The HTML `<title>` content, normally shown in the browser tab.
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"""
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),
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],
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redoc_js_url: Annotated[
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str,
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Doc(
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"""
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The URL to use to load the ReDoc JavaScript.
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It is normally set to a CDN URL.
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"""
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),
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] = "https://cdn.jsdelivr.net/npm/redoc@next/bundles/redoc.standalone.js",
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redoc_favicon_url: Annotated[
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str,
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Doc(
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"""
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The URL of the favicon to use. It is normally shown in the browser tab.
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"""
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),
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] = "https://fastapi.tiangolo.com/img/favicon.png",
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with_google_fonts: Annotated[
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bool,
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Doc(
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"""
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Load and use Google Fonts.
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"""
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),
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] = True,
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) -> HTMLResponse:
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"""
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Generate and return the HTML response that loads ReDoc for the alternative
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API docs (normally served at `/redoc`).
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You would only call this function yourself if you needed to override some parts,
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for example the URLs to use to load ReDoc's JavaScript and CSS.
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Read more about it in the
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[FastAPI docs for Custom Docs UI Static Assets (Self-Hosting)](https://fastapi.tiangolo.com/how-to/custom-docs-ui-assets/).
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"""
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html = f"""
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<!DOCTYPE html>
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<html>
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<head>
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<title>{title}</title>
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<!-- needed for adaptive design -->
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<meta charset="utf-8"/>
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<meta name="viewport" content="width=device-width, initial-scale=1">
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"""
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if with_google_fonts:
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html += """
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<link href="https://fonts.googleapis.com/css?family=Montserrat:300,400,700|Roboto:300,400,700" rel="stylesheet">
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"""
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html += f"""
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<link rel="shortcut icon" href="{redoc_favicon_url}">
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<!--
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ReDoc doesn't change outer page styles
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-->
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<style>
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body {{
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margin: 0;
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padding: 0;
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}}
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</style>
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</head>
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<body>
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<noscript>
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ReDoc requires Javascript to function. Please enable it to browse the documentation.
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</noscript>
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<redoc spec-url="{openapi_url}"></redoc>
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<script src="{redoc_js_url}"> </script>
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</body>
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</html>
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"""
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return HTMLResponse(html)
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def get_swagger_ui_oauth2_redirect_html() -> HTMLResponse:
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"""
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Generate the HTML response with the OAuth2 redirection for Swagger UI.
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You normally don't need to use or change this.
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"""
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# copied from https://github.com/swagger-api/swagger-ui/blob/v4.14.0/dist/oauth2-redirect.html
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html = """
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<!doctype html>
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<html lang="en-US">
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<head>
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<title>Swagger UI: OAuth2 Redirect</title>
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</head>
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<body>
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<script>
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'use strict';
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function run () {
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var oauth2 = window.opener.swaggerUIRedirectOauth2;
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var sentState = oauth2.state;
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var redirectUrl = oauth2.redirectUrl;
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var isValid, qp, arr;
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if (/code|token|error/.test(window.location.hash)) {
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qp = window.location.hash.substring(1).replace('?', '&');
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} else {
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qp = location.search.substring(1);
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}
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arr = qp.split("&");
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arr.forEach(function (v,i,_arr) { _arr[i] = '"' + v.replace('=', '":"') + '"';});
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qp = qp ? JSON.parse('{' + arr.join() + '}',
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function (key, value) {
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return key === "" ? value : decodeURIComponent(value);
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}
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) : {};
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isValid = qp.state === sentState;
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if ((
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oauth2.auth.schema.get("flow") === "accessCode" ||
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oauth2.auth.schema.get("flow") === "authorizationCode" ||
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oauth2.auth.schema.get("flow") === "authorization_code"
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) && !oauth2.auth.code) {
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if (!isValid) {
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oauth2.errCb({
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authId: oauth2.auth.name,
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source: "auth",
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level: "warning",
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message: "Authorization may be unsafe, passed state was changed in server. The passed state wasn't returned from auth server."
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});
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}
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if (qp.code) {
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delete oauth2.state;
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oauth2.auth.code = qp.code;
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oauth2.callback({auth: oauth2.auth, redirectUrl: redirectUrl});
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} else {
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let oauthErrorMsg;
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if (qp.error) {
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oauthErrorMsg = "["+qp.error+"]: " +
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(qp.error_description ? qp.error_description+ ". " : "no accessCode received from the server. ") +
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(qp.error_uri ? "More info: "+qp.error_uri : "");
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}
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oauth2.errCb({
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authId: oauth2.auth.name,
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source: "auth",
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level: "error",
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message: oauthErrorMsg || "[Authorization failed]: no accessCode received from the server."
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});
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}
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} else {
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oauth2.callback({auth: oauth2.auth, token: qp, isValid: isValid, redirectUrl: redirectUrl});
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}
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window.close();
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}
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if (document.readyState !== 'loading') {
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run();
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} else {
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document.addEventListener('DOMContentLoaded', function () {
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run();
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});
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}
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</script>
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</body>
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</html>
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"""
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return HTMLResponse(content=html)
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