Update static/app.js

static/app.js

@@ -7,9 +7,27 @@ async function postJSON(url, body){
     headers: {"Content-Type": "application/json"},
     body: JSON.stringify(body)
   });
-  // 200以外でも本文を拾って表示したいのでここでは throw しない
   let data = null;
-  try { data = await res.json(); } catch(_) { data = {ok:false, error:`${res.status} ${res.statusText}`}; }
+  const ct = (res.headers.get("content-type") || "").toLowerCase();
+  if (ct.includes("application/json")) {
+    try { data = await res.json(); } catch(e){ data = {ok:false, error:`Invalid JSON: ${e.message}`}; }
+  } else {
+    const text = await res.text();
+    data = {ok:false, error:`HTTP ${res.status} ${res.statusText}: ${text.slice(0,500)}`};
+  }
+  return { status: res.status, data };
+}
+
+async function postForm(url, formData){
+  const res = await fetch(url, { method: "POST", body: formData });
+  let data = null;
+  const ct = (res.headers.get("content-type") || "").toLowerCase();
+  if (ct.includes("application/json")) {
+    try { data = await res.json(); } catch(e){ data = {ok:false, error:`Invalid JSON: ${e.message}`}; }
+  } else {
+    const text = await res.text(); // ← Internal Server Error 等をそのまま拾う
+    data = {ok:false, error:`HTTP ${res.status} ${res.statusText}: ${text.slice(0,500)}`};
+  }
   return { status: res.status, data };
 }
 
@@ -32,8 +50,7 @@ document.getElementById("btnIngestUpload").onclick = async () => {
   try{
     const fd = new FormData();
     for(const f of files){ fd.append("files", f, f.name); }
-    const res = await fetch("/ingest/upload", { method: "POST", body: fd });
-    const data = await res.json();
+    const {data} = await postForm("/ingest/upload", fd);
     if(data.ok){ out.textContent = `保存:${data.saved?.length||0} / チャンク:${data.ingested_chunks}`; }
     else { out.textContent = "エラー: " + (data.error || "unknown"); }
     log("[UPLOAD] " + JSON.stringify(data));