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import re
from fastapi import FastAPI, Response
from fastapi.responses import FileResponse
import htmlcache
import texgen
app = FastAPI()
utaten_pattern = re.compile(r'[a-z0-9]+')
tex_generator = texgen.TexGenerator('pdf_cache', 'temp', 20)
html_cache = htmlcache.HtmlCache('html_cache')
@app.get("/utaten/{item_id}.pdf")
async def get_utaten_lyric_pdf(item_id: str):
try:
print('_get_utaten_tex_source')
tex = await html_cache.get_utaten_tex_source(item_id)
print('xelatex')
pdf_path = await tex_generator.xelatex(tex)
return FileResponse(pdf_path, media_type='application/pdf')
except texgen.TexGenerationError as e:
return Response(content=f'Failed to generate tex file: {e}', status_code=502)
@app.get("/utaten/{item_id}.tex")
async def get_utaten_lyric_tex(item_id: str):
try:
tex = await html_cache.get_utaten_tex_source(item_id)
return Response(content=tex, media_type='application/x-tex')
except htmlcache.TexSourceGenerationError as e:
return Response(content=str(e), status_code=503)
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