import { NextResponse } from "next/server"
import { desc, eq } from "drizzle-orm"
import { db } from "@/lib/db"
import { inspections } from "@/lib/db/schema"
import { getSessionUser } from "@/lib/session"
import { inspectionSchema } from "@/lib/validations"
import { ownsProperty, ownsUnit } from "@/lib/db/ownership"
import { getEffectiveOwnerId, getAccountContext } from "@/lib/account"

const DEFAULT_ITEMS = [
  "Walls & Ceilings", "Floors", "Windows & Blinds", "Doors & Locks",
  "Kitchen Appliances", "Bathroom Fixtures", "Plumbing", "Electrical Outlets",
  "HVAC / Heating", "Smoke Detectors", "Cleanliness", "Keys Returned",
]

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

  const ownerId = await getEffectiveOwnerId(user.id)

  try {
    const data = await db.query.inspections.findMany({
      where: eq(inspections.user_id, ownerId),
      with: {
        property: { columns: { name: true } },
        unit: { columns: { unit_number: true } },
      },
      orderBy: desc(inspections.created_at),
    })

    return NextResponse.json(data)
  } catch (e) {
    return NextResponse.json({ error: (e as Error).message }, { status: 500 })
  }
}

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

  const ctx = await getAccountContext(user.id)
  const ownerId = ctx.ownerId
  if (!ctx.canWrite) return NextResponse.json({ error: "Forbidden" }, { status: 403 })

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

  if (
    !(await ownsProperty(ownerId, parsed.data.property_id)) ||
    !(await ownsUnit(ownerId, parsed.data.unit_id))
  ) {
    return NextResponse.json({ error: "Invalid reference" }, { status: 403 })
  }

  const items = DEFAULT_ITEMS.map(label => ({ label, condition: "good", notes: "" }))

  try {
    const [data] = await db
      .insert(inspections)
      .values({
        user_id: ownerId,
        property_id: parsed.data.property_id,
        unit_id: parsed.data.unit_id || null,
        type: parsed.data.type,
        date: parsed.data.date,
        items,
        notes: parsed.data.notes || null,
        status: "draft",
      })
      .returning()

    return NextResponse.json(data)
  } catch (e) {
    return NextResponse.json({ error: (e as Error).message }, { status: 500 })
  }
}
