// Part 9 of 15 of the operator console app script.
//
// Keyboard review mode, duplicate grouping, and batch decisions.
//
// Load order is significant: these are classic (non-module) scripts sharing one
// global scope, and index.html must keep them in the order listed above/below.
// Splitting is a pure line-range extraction of the former single app.js.

// --- Keyboard review mode ------------------------------------------------



const KEYBOARD_HELP = [

  "J / ↓ : 다음 케이스",

  "K / ↑ : 이전 케이스",

  "A : 승인   H : 보류   R : 반려(메모로 이동)",

  "N : 다음 미심사 케이스",

  "? : 이 도움말 열기/닫기",

  "Esc : 도움말 닫기",

].join("\n");



function isTypingTarget(target) {

  if (!target) return false;

  const tag = String(target.tagName || "").toLowerCase();

  return tag === "input" || tag === "textarea" || tag === "select" || target.isContentEditable;

}



function moveSelection(offset) {

  const rows = filteredSubmissions();

  if (!rows.length) return;

  const index = rows.findIndex((item) => item.id === state.selectedCaseId);

  // From "no selection", J lands on the first row and K on the last.

  const nextIndex = index === -1

    ? (offset > 0 ? 0 : rows.length - 1)

    : Math.min(rows.length - 1, Math.max(0, index + offset));

  selectCase(rows[nextIndex].id);

}



function moveToNextUnreviewed() {

  const rows = filteredSubmissions();

  const index = rows.findIndex((item) => item.id === state.selectedCaseId);

  const ordered = [...rows.slice(index + 1), ...rows.slice(0, Math.max(0, index + 1))];

  const next = ordered.find((item) => item.decisionStatus === "unreviewed");

  if (next) {

    selectCase(next.id);

  } else {

    setImportStatus("미심사 케이스가 없습니다.", "ok");

  }

}



function renderReviewProgress() {

  const target = document.getElementById("review-progress");

  if (!target) return;

  const rows = filteredSubmissions();

  const position = rows.findIndex((item) => item.id === state.selectedCaseId) + 1;

  const remaining = rows.filter((item) => item.decisionStatus === "unreviewed").length;

  target.textContent = rows.length

    ? `${position || "-"}/${rows.length} · 남은 미심사 ${remaining}건 · ? 도움말`

    : "";

}



function handleReviewShortcut(event) {

  if (event.ctrlKey || event.metaKey || event.altKey) return;

  if (isTypingTarget(event.target)) return;

  const key = event.key;

  if (key === "Escape") {

    const help = document.getElementById("keyboard-help");

    if (help && !help.hidden) help.hidden = true;

    return;

  }

  if (key === "?") {

    const help = document.getElementById("keyboard-help");

    if (help) {

      help.textContent = KEYBOARD_HELP;

      help.hidden = !help.hidden;

    }

    event.preventDefault();

    return;

  }

  // Navigation works from the queue and the workbench; decisions only make
  // sense once a case is open.

  if (key === "j" || key === "J" || key === "ArrowDown") {

    moveSelection(1);

    event.preventDefault();

    return;

  }

  if (key === "k" || key === "K" || key === "ArrowUp") {

    moveSelection(-1);

    event.preventDefault();

    return;

  }

  if (key === "n" || key === "N") {

    moveToNextUnreviewed();

    event.preventDefault();

    return;

  }

  if (!state.selectedCaseId) return;

  if (key === "a" || key === "A") {

    setDecision("approved").then(() => moveToNextUnreviewed());

    event.preventDefault();

    return;

  }

  if (key === "h" || key === "H") {

    setDecision("held").then(() => moveToNextUnreviewed());

    event.preventDefault();

    return;

  }

  if (key === "r" || key === "R") {

    // Rejection needs a memo, so hand the operator the field instead of firing
    // a request that would fail validation.

    switchView("workbench");

    const memo = document.getElementById("decision-memo");

    if (memo) memo.focus();

    event.preventDefault();

  }

}



// --- Duplicate / prior-case grouping ------------------------------------



function duplicateBadgeHtml(submission) {

  const group = submission.duplicateGroup;

  if (!group || !group.size) return "";

  const priors = group.priorDecisions || [];

  const priorText = priors.length

    ? `선례: ${priors

        .map((item) => `${item.submissionId} ${decisionLabels[item.decision] || item.decision}`)

        .join(", ")}`

    : "아직 판정된 선례 없음";

  const tone = group.conflicting ? " conflicting" : "";

  const conflictNote = group.conflicting ? " · 판정 불일치" : "";

  // 선례를 배지 본문에 싣는다. title 에만 두면 마우스를 올린 사람만 알 수 있고,
  // 큐를 훑는 동안에는 "이미 판정한 이미지"가 보이지 않는다.
  const summary = priorDecisionSummary(submission);

  const priorNote = group.conflicting

    ? conflictNote

    : summary && summary.inheritable

      ? ` · 선례 ${decisionLabels[summary.inheritable] || summary.inheritable}`

      : "";

  return `<button type="button" class="duplicate-badge${tone}" data-duplicate-group="${escapeHtml(submission.id)}" title="${escapeHtml(`${priorText}${conflictNote}`)}">동일 이미지 ${group.size}건${priorNote}</button>`;

}



function selectDuplicateGroup(submissionId) {

  // Tick the whole group so the operator can hand it to batch re-analysis or a
  // batch decision in one move.

  const submission = submissions.find((item) => item.id === submissionId);

  const group = submission && submission.duplicateGroup;

  if (!group) return;

  const ids = new Set([submissionId, ...(group.peerIds || [])]);

  document.querySelectorAll("input[data-bulk-id]").forEach((input) => {

    input.checked = ids.has(input.dataset.bulkId);

  });

  renderBulkDecisionCount();

  const status = document.getElementById("bulk-decision-status");

  if (status) {

    const priors = group.priorDecisions || [];

    status.textContent = priors.length

      ? `동일 이미지 ${ids.size}건 선택 · 선례 ${priors

          .map((item) => `${item.submissionId} ${decisionLabels[item.decision] || item.decision}`)

          .join(", ")}`

      : `동일 이미지 ${ids.size}건을 선택했습니다.`;

  }

}



// --- Batch decisions ---------------------------------------------------



function checkedBulkSubmissionIds() {

  // Unlike selectedBulkSubmissionIds(), this never falls back to the current
  // case: a batch decision must act on an explicit selection only.

  return Array.from(document.querySelectorAll("input[data-bulk-id]:checked")).map(

    (input) => input.dataset.bulkId,

  );

}



function renderBulkDecisionCount() {

  const target = document.getElementById("bulk-decision-count");

  if (!target) return;

  const ids = checkedBulkSubmissionIds();

  const highRisk = ids.filter((id) => {

    const submission = submissions.find((item) => item.id === id);

    return submission && submission.riskBand === "high";

  }).length;

  target.textContent = highRisk

    ? `선택 ${ids.length}건 (고위험 ${highRisk}건)`

    : `선택 ${ids.length}건`;

}



let isBulkDecisionInFlight = false;



async function applyBulkDecision(decision) {

  if (isBulkDecisionInFlight) return;

  const ids = checkedBulkSubmissionIds();

  const status = document.getElementById("bulk-decision-status");

  const setStatus = (message) => {

    if (status) status.textContent = message;

  };

  if (!ids.length) {

    setStatus("판정할 케이스를 먼저 선택하세요.");

    return;

  }

  const memo = document.getElementById("decision-memo")?.value.trim() || "";

  if (decision === "rejected" && !memo) {

    setStatus("일괄 반려에는 결정 메모가 필요합니다. 메모를 입력한 뒤 다시 시도하세요.");

    return;

  }

  const highRisk = ids.filter((id) => {

    const submission = submissions.find((item) => item.id === id);

    return submission && submission.riskBand === "high";

  });

  // Guardrail: approving a high-risk case in bulk is the one irreversible-feeling
  // action here, so name the count instead of asking a generic "are you sure".

  if (highRisk.length) {

    const label = decisionLabels[decision] || decision;

    if (!window.confirm(`선택 ${ids.length}건 중 고위험 ${highRisk.length}건이 포함되어 있습니다. 그대로 ${label} 처리할까요?`)) {

      setStatus("일괄 판정을 취소했습니다.");

      return;

    }

  }

  isBulkDecisionInFlight = true;

  setStatus(`${ids.length}건 판정 중…`);

  try {

    const payload = await apiJson("/api/submissions/decision-batch", {

      method: "POST",

      body: JSON.stringify({ submission_ids: ids, decision, memo }),

    });

    const result = payload.batchDecision || { applied: [], failed: [] };

    applyBootstrap(payload);

    renderAll();

    const failures = result.failed || [];

    setStatus(

      failures.length

        ? `${(result.applied || []).length}건 적용 · ${failures.length}건 실패: ${failures

            .map((item) => `${item.submissionId}(${item.error})`)

            .join(", ")}`

        : `${(result.applied || []).length}건 판정을 적용했습니다.`,

    );

  } catch (errorValue) {

    setStatus(`일괄 판정 실패: ${errorValue.message}`);

  } finally {

    isBulkDecisionInFlight = false;

  }

}