const logEl = document.getElementById("log");
function log(msg){ logEl.textContent += msg + "\n"; }

async function postJSON(url, body){
  const res = await fetch(url, {
    method: "POST",
    headers: {"Content-Type": "application/json"},
    body: JSON.stringify(body)
  });
  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();
    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();
    data = {ok:false, error:`HTTP ${res.status} ${res.statusText}: ${text.slice(0,500)}`};
  }
  return { status: res.status, data };
}

document.getElementById("btnIngestEdinet").onclick = async () => {
  const edinetCode = document.getElementById("edinetCode").value.trim();
  const edinetDate = document.getElementById("edinetDate").value.trim();
  const out = document.getElementById("ingestEdinetResult");
  out.textContent = "実行中…";
  const {data} = await postJSON("/ingest/edinet", {edinet_code: edinetCode, date: edinetDate});
  if(data.ok){ out.textContent = `投入チャンク数: ${data.ingested_chunks}`; }
  else { out.textContent = "エラー: " + (data.error || "unknown"); }
  log("[EDINET] " + JSON.stringify(data));
};

document.getElementById("btnIngestUpload").onclick = async () => {
  const files = document.getElementById("pdfFiles").files;
  const out = document.getElementById("ingestUploadResult");
  if(!files || files.length === 0){ out.textContent = "PDFを選択してください"; return; }
  out.textContent = "アップロード中…";
  try{
    const fd = new FormData();
    for(const f of files){ fd.append("files", f, f.name); }
    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));
  }catch(e){
    out.textContent = "エラー: " + e.message;
    log("[UPLOAD][ERR] " + e.message);
  }
};

document.getElementById("btnGenerate").onclick = async () => {
  const q = document.getElementById("query").value.trim();
  const st = document.getElementById("generateStatus");
  const dl = document.getElementById("downloadLinks");
  st.textContent = "生成中…（初回はモデル呼出で時間がかかる場合があります）";
  dl.innerHTML = "";
  const {data} = await postJSON("/generate/all", {query: q});
  if(data.ok){
    st.textContent = "生成完了";
    const a1 = document.createElement("a"); a1.href = data.pptx; a1.textContent = "PPTXをダウンロード";
    const a2 = document.createElement("a"); a2.href = data.qa_csv; a2.textContent = "Q&A CSVをダウンロード";
    dl.appendChild(a1); dl.appendChild(document.createTextNode(" / ")); dl.appendChild(a2);
  }else{
    st.textContent = "エラー: " + (data.error || "unknown");
  }
  log("[GENERATE] " + JSON.stringify(data));
};