126 lines
3.9 KiB
TypeScript
126 lines
3.9 KiB
TypeScript
import { NextResponse, type NextRequest } from "next/server";
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import { isDatabaseConfigured } from "../../../../lib/server/env";
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import {
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listCatalogCoreValues,
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listCatalogMethods,
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type CatalogCoreValueDto,
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type CatalogMethodDto,
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} from "../../../../lib/server/governanceCatalog";
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import { listMethodRecommendations } from "../../../../lib/server/methodRecommendations";
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import { apiRoute } from "../../../../lib/server/apiRoute";
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import { dbUnavailable, errorJson } from "../../../../lib/server/responses";
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import { CATALOG_SECTION_IDS } from "../../../../lib/create/customRuleFacets";
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import {
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type CatalogSectionId,
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type SectionId,
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flattenRequestedFacets,
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parseRequestedFacetsFromSearchParams,
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} from "../../../../lib/server/validation/methodFacetsSchemas";
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const CATALOG_SECTION_SET = new Set<string>(CATALOG_SECTION_IDS);
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const CATALOG_CACHE_CONTROL = "public, max-age=3600";
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/** Route query alias → canonical `coreValues`. */
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function normalizeSectionParam(raw: string): string {
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return raw === "values" ? "coreValues" : raw;
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}
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type MethodMatch = { score: number; matchedFacets: string[] };
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function rankCatalogMethods(
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catalog: CatalogMethodDto[],
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matchesBySlug: Record<string, MethodMatch> | null,
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includeMatches: boolean,
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): Array<CatalogMethodDto & { matches?: MethodMatch }> {
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if (!matchesBySlug || !includeMatches) {
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return catalog;
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}
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const indexBySlug = new Map(catalog.map((m, i) => [m.slug, i]));
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const sorted = [...catalog].sort((a, b) => {
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const sa = matchesBySlug[a.slug]?.score ?? 0;
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const sb = matchesBySlug[b.slug]?.score ?? 0;
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if (sa !== sb) return sb - sa;
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return (indexBySlug.get(a.slug) ?? 0) - (indexBySlug.get(b.slug) ?? 0);
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});
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return sorted.map((m) => ({
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...m,
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matches: matchesBySlug[m.slug] ?? { score: 0, matchedFacets: [] },
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}));
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}
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/**
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* GET /api/create-flow/methods?section=<section>[&facet.*=...]
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*
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* Returns the full built-in catalog for one facet: four method decks
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* (with optional facet ranking) or all preset core values. Copy is
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* included in v1 (English only).
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*
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* See `docs/guides/template-recommendation-matrix.md` §9.2 / §9.5 (CR-115).
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*/
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export const GET = apiRoute(
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"createFlow.methods.get",
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async (request: NextRequest) => {
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if (!isDatabaseConfigured()) {
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return dbUnavailable();
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}
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const sectionParam = request.nextUrl.searchParams.get("section");
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if (!sectionParam) {
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return errorJson(
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"validation_error",
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`Unknown section. Expected one of: ${CATALOG_SECTION_IDS.join(", ")} (alias: values → coreValues)`,
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400,
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);
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}
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const normalized = normalizeSectionParam(sectionParam);
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if (!CATALOG_SECTION_SET.has(normalized)) {
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return errorJson(
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"validation_error",
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`Unknown section. Expected one of: ${CATALOG_SECTION_IDS.join(", ")} (alias: values → coreValues)`,
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400,
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);
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}
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const section = normalized as CatalogSectionId;
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if (section === "coreValues") {
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const methods: CatalogCoreValueDto[] = listCatalogCoreValues();
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return NextResponse.json(
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{ section: "coreValues" as const, methods },
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{ headers: { "Cache-Control": CATALOG_CACHE_CONTROL } },
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);
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}
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const facets = parseRequestedFacetsFromSearchParams(
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request.nextUrl.searchParams,
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);
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const catalog = listCatalogMethods(section as SectionId);
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const facetSection = section as SectionId;
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const ranking = await listMethodRecommendations({
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section: facetSection,
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facets,
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});
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const includeMatches = flattenRequestedFacets(facets).length > 0;
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let matchesBySlug: Record<string, MethodMatch> | null = null;
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if (includeMatches && ranking) {
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matchesBySlug = ranking.matchesBySlug;
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}
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const methods = rankCatalogMethods(
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catalog,
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matchesBySlug,
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includeMatches,
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);
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return NextResponse.json(
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{ section, methods },
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{ headers: { "Cache-Control": CATALOG_CACHE_CONTROL } },
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);
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},
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);
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