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from fastapi import FastAPI, Request
from fastapi.responses import HTMLResponse, JSONResponse
import os, pathlib, json

from Deployment_UI import router as deployment_ui_router
from Deployment_UI_BE import router as deployment_be_router
from modelblob import router as modelblob_router  # NEW (blob page + /modelblob.json)

app = FastAPI()
app.include_router(deployment_ui_router)
app.include_router(deployment_be_router)
app.include_router(modelblob_router)  # NEW

LOCAL_BLOB_PATH = os.getenv("MODEL_BLOB_PATH", "/tmp/model_blob.json")

def _load_blob_text() -> str:
    try:
        if os.path.exists(LOCAL_BLOB_PATH):
            return pathlib.Path(LOCAL_BLOB_PATH).read_text(encoding="utf-8")
    except Exception:
        pass
    return "{\n  \"note\": \"paste or programmatically write the model blob to /tmp/model_blob.json\"\n}"

def html_escape(s: str) -> str:
    return (
        s.replace("&", "&")
         .replace("<", "&lt;")
         .replace(">", "&gt;")
         .replace('"', "&quot;")
         .replace("'", "&#39;")
    )

@app.get("/", response_class=HTMLResponse)
def landing_page() -> HTMLResponse:
    blob_text = _load_blob_text()
    html = f"""
<!doctype html>
<html>
  <head>
    <meta charset="utf-8"/>
    <title>RunPod Model Tester — Blob</title>
    <style>
      body {{ font-family: system-ui, sans-serif; margin: 24px; }}
      pre {{ border:1px solid #ddd; border-radius:8px; padding:12px; background:#fafafa; max-height:50vh; overflow:auto; }}
      .btn {{ display:inline-block; width:100%; max-width:680px; padding:12px 16px; margin:10px 0;
              border:none; border-radius:8px; color:#fff; background:#0078d7; cursor:pointer; }}
      .btn.secondary {{ background:#444; }}
      .row {{ max-width: 980px; }}
      #msg {{ margin-top:10px; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size:12px; }}
      /* overlay */
      #blobOverlay {{ display:none; position:fixed; inset:0; background:rgba(0,0,0,.6); z-index:9999; }}
      #blobCard {{ position:absolute; inset:4%; background:#0d1117; border-radius:12px; overflow:hidden;
                  box-shadow:0 10px 40px rgba(0,0,0,.5); }}
      #blobHeader {{ padding:8px 12px; background:#111; color:#c9d1d9; display:flex; justify-content:space-between; align-items:center; }}
      #closeBlob {{ width:auto; padding:6px 10px; }}
    </style>
  </head>
  <body>
    <div class="row">
      <h1>RunPod Model Tester — Blob</h1>

      <div id="count">{len(blob_text)}</div>
      <div>
        <div style="font-size:12px; color:#555; margin-bottom:6px;">Model blob (read-only)</div>
        <pre id="blob" aria-label="model blob">{html_escape(blob_text)}</pre>
      </div>

      <!-- CHANGED: pass blob URL to the UI; no separate ingest button -->
      <a href="/Deployment_UI?blob_url=/modelblob.json"
         class="btn secondary" style="text-decoration:none; text-align:center;">
        Open Deployment UI
      </a>
      <button id="openBlob" class="btn secondary">View Model Blob</button>

      <div id="msg"></div>
    </div>

    <!-- Overlay -->
    <div id="blobOverlay" aria-hidden="true">
      <div id="blobCard">
        <div id="blobHeader">
          <div>Model Blob</div>
          <button id="closeBlob" class="btn secondary">Close</button>
        </div>
        <iframe src="/modelblob" title="Model Blob" style="width:100%; height:calc(100% - 44px); border:0;"></iframe>
      </div>
    </div>

    <script>
      function setMsg(s) {{
        document.getElementById("msg").textContent = s;
      }}

      // Overlay controls
      const overlay = document.getElementById("blobOverlay");
      document.getElementById("openBlob").addEventListener("click", () => {{
        overlay.style.display = "block";
        overlay.setAttribute("aria-hidden", "false");
      }});
      document.getElementById("closeBlob").addEventListener("click", () => {{
        overlay.style.display = "none";
        overlay.setAttribute("aria-hidden", "true");
      }});
      overlay.addEventListener("click", (e) => {{
        if (e.target === overlay) {{
          overlay.style.display = "none";
          overlay.setAttribute("aria-hidden", "true");
        }}
      }});
    </script>
  </body>
</html>
    """
    return HTMLResponse(html)

# kept for compatibility but no longer used by the UI flow
@app.post("/set_blob")
async def set_blob(req: Request):
    try:
        ctype = req.headers.get("content-type","")
        if "application/json" in ctype:
            data = await req.json()
            txt = data.get("blob") if isinstance(data, dict) else None
        else:
            form = await req.form()
            txt = form.get("blob")

        if not isinstance(txt, str) or not txt.strip():
            return JSONResponse({"error": "Missing 'blob' string"}, 400)

        pathlib.Path(LOCAL_BLOB_PATH).write_text(txt, encoding="utf-8")
        return JSONResponse({"ok": True, "path": LOCAL_BLOB_PATH})
    except Exception as e:
        return JSONResponse({"error": str(e)}, 500)