72 lines
3 KiB
JavaScript
72 lines
3 KiB
JavaScript
"use strict";
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const fs = require("node:fs");
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const http = require("node:http");
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const path = require("node:path");
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const DEFAULT_MAP = path.resolve(__dirname, "../../routing/persona-contribution-map.json");
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function normalize(value) {
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return String(value || "").toLowerCase().replace(/[\s·._/-]+/g, " ").trim();
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}
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function recall(map, query) {
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const needle = normalize(query);
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const terms = needle.split(" ").filter(term => term.length >= 2);
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if (!needle) return [];
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return map.contributions.map(item => {
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const identifiers = [item.id, item.arrival_id, ...(item.project_ids || [])]
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.filter(value => typeof value === "string" && value.trim());
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const keywords = item.keywords || [];
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const haystack = normalize([...identifiers, item.arrival_name, item.title, ...keywords].join(" "));
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let score = identifiers.reduce((total, id) => total + (needle.includes(normalize(id)) ? 100 : 0), 0);
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score += keywords.reduce((total, keyword) => total + (needle.includes(normalize(keyword)) ? 20 : 0), 0);
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score += terms.reduce((total, term) => total + (haystack.includes(term) ? 5 : 0), 0);
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if (haystack.includes(needle)) score += 10;
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return { item, score };
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}).filter(row => row.score > 0)
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.sort((a, b) => b.score - a.score || a.item.id.localeCompare(b.item.id))
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.map(({ item, score }) => ({
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score,
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contribution_id: item.id,
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arrival: { id: item.arrival_id, name: item.arrival_name },
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title: item.title,
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paths: item.canonical_paths,
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grants_execution_authority: false,
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}));
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}
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function createServer(options = {}) {
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const mapFile = options.mapFile || process.env.GLS0231_MAP || DEFAULT_MAP;
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return http.createServer((req, res) => {
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const url = new URL(req.url, "http://localhost");
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if (req.method !== "GET") return json(res, 405, { error: "method_not_allowed" });
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if (url.pathname === "/health") return json(res, 200, { ok: true, service: "gls-0231-light-arrival-navigation", mode: "read-only" });
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if (url.pathname !== "/v1/recall") return json(res, 404, { error: "not_found" });
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let map;
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try { map = JSON.parse(fs.readFileSync(mapFile, "utf8")); }
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catch { return json(res, 503, { error: "contribution_map_unavailable" }); }
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const query = String(url.searchParams.get("q") || "").slice(0, 200);
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const matches = recall(map, query);
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return json(res, 200, {
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schema: "guanghu.route-recall-response/v1",
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status: matches.length ? "FOUND_CONFIDENT_PATH" : "NO_TRUSTED_PATH",
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query,
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matches,
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grants_execution_authority: false,
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});
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});
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}
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function json(res, status, value) {
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res.writeHead(status, { "content-type": "application/json; charset=utf-8", "cache-control": "no-store", "x-content-type-options": "nosniff" });
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res.end(JSON.stringify(value));
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}
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if (require.main === module) {
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const host = process.env.GLS0231_HOST || "127.0.0.1";
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const port = Number(process.env.GLS0231_PORT || 3924);
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createServer().listen(port, host, () => process.stdout.write(`gls-0231 navigation listening on ${host}:${port}\n`));
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}
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module.exports = { createServer, recall };
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