import { FastifyInstance } from "fastify"
import { db } from "../db"
import { users } from "../db/schema"
import { emailService } from "../services/email"

export default async function notificationRoutes(fastify: FastifyInstance) {
  fastify.addHook("preHandler", async (request, reply) => {
    try {
      await request.jwtVerify()
    } catch (err) {
      return reply.code(401).send({ message: "Unauthorized" })
    }
  })

  const isAdmin = (request: any) => {
    return (request.user as { sub: string, role: string })?.role === "admin"
  }

  fastify.post("/send-weekly-summary", async (request, reply) => {
    if (!isAdmin(request)) {
      return reply.code(403).send({ message: "Forbidden: Admin role required" })
    }

    const allUsers = await db.select().from(users)
    let sentCount = 0

    for (const user of allUsers) {
      try {
        await emailService.sendWeeklySummary(user)
        sentCount++
      } catch (error) {
        fastify.log.error(`Failed to send weekly summary to ${user.email}: ${error}`)
      }
    }

    return { sent: sentCount }
  })
}