//  File:    route.ts
//  Path:    apps/web/app/api/v1/occupations/[code]/route.ts
//  Project: AI Risk Index — airiskindex.io
//  Author:  Simon-Pierre Boucher
//  Contact: contact@spboucher.ai
//  Copyright © 2026 Simon-Pierre Boucher. All rights reserved.
//
//  Description: Public API: full score breakdown for one occupation.

import { prisma } from "@airiskindex/db";
import { INDEX_VERSION } from "@airiskindex/scoring";
import type { NextRequest } from "next/server";

export const dynamic = "force-dynamic";

export async function GET(
  _request: NextRequest,
  { params }: { params: { code: string } },
): Promise<Response> {
  try {
    const occupation = await prisma.occupation.findUnique({
      where: { code: params.code },
      include: {
        tasks: {
          select: { id: true, statement: true, importance: true },
          orderBy: { id: "asc" },
        },
      },
    });
    if (!occupation) {
      return Response.json({ error: "not_found" }, { status: 404 });
    }

    // Latest run's scores; historical runs stay queryable (CLAUDE.md §9).
    const latest = await prisma.occupationScore.findFirst({
      where: { occupationCode: occupation.code },
      orderBy: { run: { createdAt: "desc" } },
      include: { run: true },
    });

    return Response.json({
      index_version: latest?.run.indexVersion ?? INDEX_VERSION,
      occupation: {
        code: occupation.code,
        title: occupation.title,
        description: occupation.description,
        esco_uri: occupation.escoUri,
        rome_code: occupation.romeCode,
        median_wage_cents: occupation.medianWageCents,
        wage_currency: occupation.wageCurrency,
      },
      scores: latest
        ? {
            run_id: latest.runId,
            computed_at: latest.run.createdAt,
            substitution: {
              low: latest.substitutionLow,
              score: latest.substitution,
              high: latest.substitutionHigh,
            },
            exposure: {
              low: latest.exposureLow,
              score: latest.exposure,
              high: latest.exposureHigh,
            },
            augmentation: {
              low: latest.augmentationLow,
              score: latest.augmentation,
              high: latest.augmentationHigh,
            },
            highly_exposed_task_share: latest.highlyExposedTaskShare,
          }
        : null,
      tasks: occupation.tasks,
    });
  } catch {
    return Response.json({ error: "database_unavailable" }, { status: 503 });
  }
}