Import source: app/backend/src/routes/follows
Import the existing local project snapshot. This commit organizes existing files; it does not represent newly developed functionality.
This commit is contained in:
arsam
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import type { FastifyInstance, FastifyReply } from 'fastify';
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import { z } from 'zod';
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import { prisma } from '../db.js';
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import { requireAuth } from '../plugins/session.js';
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const WRITER_ROLES = ['writer', 'editor', 'admin'];
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const TOPIC_SLUGS = new Set(['ai', 'security', 'software', 'hardware', 'startups', 'data']);
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const listSchema = z.object({
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page: z.coerce.number().int().positive().default(1),
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limit: z.coerce.number().int().positive().max(50).default(20),
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});
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function badInput(reply: FastifyReply) {
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return reply.code(400).send({ error: 'invalid_input' });
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}
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async function findWriter(username: string) {
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return prisma.user.findFirst({
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where: { username: username.toLowerCase().replace(/^@/, ''), role: { in: WRITER_ROLES as any }, status: 'active' },
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select: { id: true, username: true, name: true, avatarUrl: true, role: true },
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});
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}
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export default async function followRoutes(app: FastifyInstance) {
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app.get('/api/v1/topics/:slug/followers', async (req, reply) => {
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const parsed = listSchema.safeParse(req.query);
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if (!parsed.success) return badInput(reply);
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const { slug } = req.params as { slug: string };
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if (!TOPIC_SLUGS.has(slug)) return reply.code(404).send({ error: 'not_found' });
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const { page, limit } = parsed.data;
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const [count, current] = await Promise.all([
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prisma.topicFollow.count({ where: { topic: slug } }),
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req.session
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? prisma.topicFollow.findUnique({ where: { userId_topic: { userId: req.session.userId, topic: slug } } })
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: Promise.resolve(null),
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]);
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return { count, following: !!current, page, limit, pages: Math.ceil(count / limit) };
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});
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app.post('/api/v1/topics/:slug/follow', { preHandler: requireAuth() }, async (req, reply) => {
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const { slug } = req.params as { slug: string };
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if (!TOPIC_SLUGS.has(slug)) return reply.code(404).send({ error: 'not_found' });
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await prisma.topicFollow.upsert({
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where: { userId_topic: { userId: req.session!.userId, topic: slug } },
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update: {},
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create: { userId: req.session!.userId, topic: slug },
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});
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await prisma.analyticsEvent.create({
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data: { type: 'topic_followed', userId: req.session!.userId, topic: slug, metadata: { topic: slug } },
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}).catch(() => undefined);
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const count = await prisma.topicFollow.count({ where: { topic: slug } });
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return { ok: true, following: true, count };
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});
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app.delete('/api/v1/topics/:slug/follow', { preHandler: requireAuth() }, async (req, reply) => {
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const { slug } = req.params as { slug: string };
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if (!TOPIC_SLUGS.has(slug)) return reply.code(404).send({ error: 'not_found' });
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await prisma.topicFollow.delete({
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where: { userId_topic: { userId: req.session!.userId, topic: slug } },
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}).catch(() => undefined);
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const count = await prisma.topicFollow.count({ where: { topic: slug } });
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return { ok: true, following: false, count };
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});
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app.post('/api/v1/writers/:username/follow', { preHandler: requireAuth() }, async (req, reply) => {
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const { username } = req.params as { username: string };
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const writer = await findWriter(username);
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if (!writer) return reply.code(404).send({ error: 'not_found' });
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if (writer.id === req.session!.userId) return reply.code(400).send({ error: 'cannot_follow_self' });
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await prisma.writerFollow.upsert({
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where: { followerId_writerId: { followerId: req.session!.userId, writerId: writer.id } },
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update: {},
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create: { followerId: req.session!.userId, writerId: writer.id },
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});
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await prisma.analyticsEvent.create({
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data: { type: 'writer_followed', userId: req.session!.userId, metadata: { writerId: writer.id, username: writer.username } },
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}).catch(() => undefined);
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const count = await prisma.writerFollow.count({ where: { writerId: writer.id } });
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return { ok: true, following: true, count };
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});
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app.delete('/api/v1/writers/:username/follow', { preHandler: requireAuth() }, async (req, reply) => {
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const { username } = req.params as { username: string };
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const writer = await findWriter(username);
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if (!writer) return reply.code(404).send({ error: 'not_found' });
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await prisma.writerFollow.delete({
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where: { followerId_writerId: { followerId: req.session!.userId, writerId: writer.id } },
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}).catch(() => undefined);
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const count = await prisma.writerFollow.count({ where: { writerId: writer.id } });
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return { ok: true, following: false, count };
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});
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app.get('/api/v1/writers/:username/followers', async (req, reply) => {
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const parsed = listSchema.safeParse(req.query);
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if (!parsed.success) return badInput(reply);
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const { username } = req.params as { username: string };
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const writer = await findWriter(username);
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if (!writer) return reply.code(404).send({ error: 'not_found' });
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const { page, limit } = parsed.data;
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const [count, rows, current] = await Promise.all([
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prisma.writerFollow.count({ where: { writerId: writer.id } }),
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prisma.writerFollow.findMany({
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where: { writerId: writer.id },
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include: { follower: { select: { id: true, username: true, name: true, avatarUrl: true } } },
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orderBy: { createdAt: 'desc' },
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skip: (page - 1) * limit,
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take: limit,
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}),
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req.session
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? prisma.writerFollow.findUnique({ where: { followerId_writerId: { followerId: req.session.userId, writerId: writer.id } } })
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: Promise.resolve(null),
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]);
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return {
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count,
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following: !!current,
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items: rows.map((row) => row.follower),
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page,
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limit,
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pages: Math.ceil(count / limit),
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};
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});
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app.get('/api/v1/auth/following', { preHandler: requireAuth() }, async (req) => {
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const [writers, topics] = await Promise.all([
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prisma.writerFollow.findMany({
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where: { followerId: req.session!.userId },
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include: { writer: { select: { id: true, username: true, name: true, avatarUrl: true, role: true, bio: true } } },
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orderBy: { createdAt: 'desc' },
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}),
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prisma.topicFollow.findMany({
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where: { userId: req.session!.userId },
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orderBy: { createdAt: 'desc' },
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}),
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]);
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return {
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items: writers.map((row) => ({ ...row.writer, followedAt: row.createdAt.toISOString() })),
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topics: topics.map((row) => ({ topic: row.topic, followedAt: row.createdAt.toISOString() })),
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};
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});
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}
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