// GET  /api/projects/[id]/findings — returns the project's currently visible
//                                     findings (suggested + accepted + deprecated)
// POST /api/projects/[id]/findings — runs detection, MERGES (no wipe), returns
//                                     the new set. Suggestions and deprecations
//                                     await user keep/discard via the
//                                     /findings/[findingId]/decision endpoint.

import { NextResponse } from "next/server";
import {
  loadProject,
  listVisibleFindings,
  listDiscardedFindings,
  mergeFindingsSuggestion,
} from "../../../../../lib/db/repo";
import { detectFindings } from "../../../../../lib/llm/detect";

function toApi(f: Awaited<ReturnType<typeof listVisibleFindings>>[number]) {
  return {
    id: f.id,
    kind: f.kind,
    text: f.text,
    linkedElementIds: f.linkedElementIds,
    confidence: f.confidence,
    severity: f.severity,
    validationCode: f.validationCode,
    status: f.status,
    pinned: f.pinned,
    modelVersion: f.modelVersion,
    provider: f.provider,
    llmModel: f.llmModel,
  };
}

export async function GET(req: Request, { params }: { params: Promise<{ projectId: string }> }) {
  const { projectId } = await params;
  // ?include=all merges in dismissed + resolved so the FindingsPane Discarded
  // drawer can render them. Default stays visible-only for back-compat.
  const url = new URL(req.url);
  const include = (url.searchParams.get("include") ?? "").toLowerCase();
  if (include === "all") {
    const [visible, discarded] = await Promise.all([
      listVisibleFindings(projectId),
      listDiscardedFindings(projectId),
    ]);
    return NextResponse.json({ findings: [...visible, ...discarded].map(toApi) });
  }
  const findings = await listVisibleFindings(projectId);
  return NextResponse.json({ findings: findings.map(toApi) });
}

export async function POST(_req: Request, { params }: { params: Promise<{ projectId: string }> }) {
  const { projectId } = await params;
  try {
    const { model, version } = await loadProject(projectId);
    const result = await detectFindings(model);
    const stored = await mergeFindingsSuggestion(
      projectId,
      result.findings,
      version,
      result.provider,
      result.model
    );

    return NextResponse.json({
      findings: stored.map(toApi),
      meta: {
        provider: result.provider,
        model: result.model,
        inputTokens: result.inputTokens,
        outputTokens: result.outputTokens,
        durationMs: result.durationMs,
        strippedRefs: result.strippedRefs,
        droppedFindings: result.droppedFindings,
      },
    });
  } catch (err) {
    return NextResponse.json({ error: (err as Error).message }, { status: 500 });
  }
}