feat: Add Web UI for calendar and card generation

src/kronos-ui/main.py

@@ -0,0 +1,74 @@
+from datetime import datetime
+import json
+import os
+import shutil
+
+from fastapi import FastAPI, File, UploadFile, Form
+from fastapi.responses import HTMLResponse, Response
+from fastapi.staticfiles import StaticFiles
+import typst
+
+from kronos.mobilizon import get_raw_events
+
+app = FastAPI()
+
+app.mount("/static", StaticFiles(directory="src/kronos-ui/static/"), name="static")
+
+
+@app.get("/", response_class=HTMLResponse)
+async def root():
+  with open("src/kronos-ui/static/index.html", "rb") as f:
+    index = f.read()
+  return index
+
+
+@app.get("/calendar", responses={200: {"content": {"image/png": {}}}}, response_class=Response)
+async def calendar():
+  get_raw_events()
+
+  png_bytes = typst.compile("src/typst/calendar.typ", format="png")
+
+  return Response(content=png_bytes, media_type="image/png")
+
+
+@app.post("/event_card", responses={200: {"content": {"image/png": {}}}}, response_class=Response)
+async def event_card(  # noqa: PLR0913
+  title: str = Form(""),
+  description: str = Form(""),
+  begins=Form(...),
+  ends=Form(...),
+  speaker: str = Form(""),
+  picture: UploadFile = File(...),
+):
+  pic_path = os.path.join("src", "typst", "assets", "tmp", f"{datetime.now()}.jpg")
+  fp = open(pic_path, "wb")
+  if picture and picture.size > 0:
+    shutil.copyfileobj(picture.file, fp)
+  else:
+    with open(os.path.join("src", "typst", "assets", "photo.jpg"), "rb") as placeholder:
+      shutil.copyfileobj(placeholder, fp)
+
+  # TODO: pack this in a method
+  events = [
+    {
+      "title": title,
+      "beginsOn": begins,
+      "endsOn": ends,
+      "description": description,
+      "physicalAddress": None,
+      "picture": os.path.relpath(pic_path, start="src/typst"),
+      "url": None,
+      "txt_description": description,
+      "txt_date": f"{begins.split('T')[0]} {begins.split('T')[1]}-{ends.split('T')[1]}",
+      #        "txt_date": "2026-04-29 18:00-19:00",
+      "speaker": speaker,
+    }
+  ]
+  sys_inputs = {"events": json.dumps(events)}
+  print(sys_inputs)
+  # FIXME: remove hardcoded paths
+  png_bytes = typst.compile("src/typst/event.typ", format="png", sys_inputs=sys_inputs)
+
+  fp.close()
+
+  return Response(content=png_bytes, media_type="image/png")