97 lines
3.3 KiB
TypeScript
97 lines
3.3 KiB
TypeScript
import { prisma } from "@/lib/prisma";
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import { NextResponse } from "next/server";
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export async function GET(req: Request) {
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const { searchParams } = new URL(req.url);
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const q = (searchParams.get("q") || "").trim();
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const page = Math.max(1, parseInt(searchParams.get("page") || "1", 10));
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const pageSize = Math.min(50, parseInt(searchParams.get("pageSize") || "15", 10));
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const sort = searchParams.get("sort") || "latest";
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if (!q) {
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return NextResponse.json({ topics: [], totalCount: 0, page, pageSize, q: "" });
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}
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const where: any = {
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isHidden: false,
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};
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// 优先使用全文索引，回退到 LIKE
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const useFullText = q.length >= 2;
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if (useFullText) {
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// MySQL FULLTEXT 的 boolean mode 搜索
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// 把关键词拆词，规避 FULLTEXT 最小长度限制
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const tokens = q
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.split(/\s+/)
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.filter((t) => t.length >= 1)
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.slice(0, 10)
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.map((t) => `+${t.replace(/[+\-><()~*"@]/g, "")}*`);
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if (tokens.length > 0) {
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// Prisma 的 where.fulltext 字段是 reserved，使用原始查询更稳
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// 这里先尝试简单的 contains 组合
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const ors: any[] = [];
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for (const t of q.split(/\s+/).filter((x) => x.length >= 1)) {
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ors.push({ title: { contains: t } });
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ors.push({ content: { contains: t } });
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}
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where.OR = ors;
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} else {
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where.OR = [{ title: { contains: q } }, { content: { contains: q } }];
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}
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} else {
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where.OR = [{ title: { contains: q } }, { content: { contains: q } }];
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}
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const orderBy: any = {};
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if (sort === "relevance" && useFullText) {
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// 简化：标题命中权重更高 → 让标题命中靠前
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orderBy.isPinned = "desc";
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} else if (sort === "hot") {
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orderBy.viewCount = "desc";
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} else if (sort === "active") {
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orderBy.lastReplyAt = "desc";
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} else {
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orderBy.createdAt = "desc";
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}
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const [topics, totalCount] = await Promise.all([
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prisma.forumTopic.findMany({
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where,
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include: {
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category: { select: { name: true, slug: true, icon: true } },
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user: { select: { id: true, name: true, email: true, avatarUrl: true, level: true, points: true, isBot: true } },
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_count: { select: { posts: true } },
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tags: { include: { tag: true } },
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},
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orderBy: [{ isPinned: "desc" }, orderBy],
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skip: (page - 1) * pageSize,
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take: pageSize,
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}),
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prisma.forumTopic.count({ where }),
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]);
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// 生成高亮摘要
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const snippets = topics.map((t) => {
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const titleHit = q && t.title.toLowerCase().includes(q.toLowerCase());
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let snippet = "";
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if (q) {
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const idx = t.content.toLowerCase().indexOf(q.toLowerCase());
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if (idx >= 0) {
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const start = Math.max(0, idx - 50);
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const end = Math.min(t.content.length, idx + q.length + 100);
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snippet =
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(start > 0 ? "..." : "") +
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t.content.slice(start, end).replace(/\s+/g, " ").trim() +
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(end < t.content.length ? "..." : "");
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} else {
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snippet = t.content.slice(0, 150).replace(/\s+/g, " ").trim() + (t.content.length > 150 ? "..." : "");
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}
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} else {
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snippet = t.content.slice(0, 150).replace(/\s+/g, " ").trim();
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}
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return { topicId: t.id, titleHit, snippet };
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});
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return NextResponse.json({ topics, totalCount, page, pageSize, q, snippets });
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}
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