// One-shot dry-run audit of a single PR. Useful for verifying check
// behavior (kb_query scrum surfacing, inference prompts, etc.) without
// posting to Gitea. Does NOT touch state.json and does NOT post
// commit status or PR comments.
//
// Run: bun run auditor/audit_one.ts <pr-number>

import { getPrSnapshot } from "./gitea.ts";
import { auditPr } from "./audit.ts";

async function main() {
  const prNumRaw = process.argv[2];
  if (!prNumRaw) {
    console.error("usage: bun run auditor/audit_one.ts <pr-number>");
    process.exit(2);
  }
  const prNum = Number(prNumRaw);
  if (!Number.isFinite(prNum)) {
    console.error(`invalid PR number: ${prNumRaw}`);
    process.exit(2);
  }

  console.log(`[audit_one] fetching PR #${prNum}...`);
  const pr = await getPrSnapshot(prNum);
  console.log(`[audit_one] PR #${pr.number}: "${pr.title}" (head=${pr.head_sha.slice(0, 12)})`);
  console.log(`[audit_one] files in diff: ${pr.files.length}`);
  for (const f of pr.files) console.log(`  - ${f.path} (+${f.additions}/-${f.deletions})`);
  console.log("");

  const verdict = await auditPr(pr, {
    dry_run: true,                      // no Gitea posting
    skip_dynamic: true,                  // don't run fixture
    skip_inference: process.env.LH_AUDITOR_SKIP_INFERENCE === "1",
  });

  console.log("\n═══ VERDICT ═══");
  console.log(`overall:  ${verdict.overall}`);
  console.log(`one-liner: ${verdict.one_liner}`);
  console.log(`findings:  total=${verdict.metrics.findings_total} block=${verdict.metrics.findings_block} warn=${verdict.metrics.findings_warn} info=${verdict.metrics.findings_info}`);
  console.log("");

  // Print findings, highlighting kb_query scrum surfacing
  const byCheck: Record<string, typeof verdict.findings> = {};
  for (const f of verdict.findings) (byCheck[f.check] ||= []).push(f);

  for (const [check, findings] of Object.entries(byCheck)) {
    console.log(`── ${check} (${findings.length}) ──`);
    for (const f of findings) {
      const tag = f.severity === "block" ? "🛑" : f.severity === "warn" ? "⚠️ " : "ℹ️ ";
      console.log(`  ${tag} [${f.severity}] ${f.summary}`);
      if (f.summary.includes("scrum-master")) {
        for (const e of f.evidence) {
          console.log(`      → ${e.slice(0, 200)}`);
        }
      }
    }
  }

  const scrumFindings = verdict.findings.filter(f => f.summary.includes("scrum-master"));
  console.log("");
  console.log(`═══ SCRUM WIRE CHECK: ${scrumFindings.length} scrum-master findings surfaced by kb_query ═══`);
  if (scrumFindings.length === 0) {
    console.log("  (none — either no matching scrum_reviews.jsonl rows, or files didn't match PR diff)");
  }
  process.exit(0);
}

main().catch(e => { console.error("[audit_one] fatal:", e); process.exit(1); });