import { NextResponse } from "next/server"
import { desc, eq } from "drizzle-orm"
import { db } from "@/lib/db"
import { follow_up_rules, follow_up_log } from "@/lib/db/schema"
import { getSessionUser } from "@/lib/session"
import { followUpRuleSchema } from "@/lib/validations"

export async function GET() {
  const user = await getSessionUser()
  if (!user) return NextResponse.json({ error: "Unauthorized" }, { status: 401 })

  const [rules, logs] = await Promise.all([
    db
      .select()
      .from(follow_up_rules)
      .where(eq(follow_up_rules.user_id, user.id))
      .orderBy(follow_up_rules.created_at),
    db
      .select()
      .from(follow_up_log)
      .where(eq(follow_up_log.user_id, user.id))
      .orderBy(desc(follow_up_log.created_at))
      .limit(30),
  ])

  return NextResponse.json({ rules, logs })
}

export async function POST(request: Request) {
  const user = await getSessionUser()
  if (!user) return NextResponse.json({ error: "Unauthorized" }, { status: 401 })

  const body = await request.json()
  const parsed = followUpRuleSchema.safeParse(body)
  if (!parsed.success) {
    return NextResponse.json({ error: parsed.error.issues[0]?.message ?? "Invalid input" }, { status: 400 })
  }

  const { type, name, trigger_days, message_template } = parsed.data

  const [data] = await db
    .insert(follow_up_rules)
    .values({ user_id: user.id, type, name, trigger_days, message_template })
    .returning()

  return NextResponse.json(data, { status: 201 })
}