import { describe, expect, it } from 'vitest'
import { InstallationLimiter } from '../src/server/installation-limiter.js'

describe('InstallationLimiter', () => {
  it('enforces a bounded window independently per installation', () => {
    const limiter = new InstallationLimiter(2, 1_000)
    expect(limiter.consume('first', 0)).toBe(true)
    expect(limiter.consume('first', 1)).toBe(true)
    expect(limiter.consume('first', 2)).toBe(false)
    expect(limiter.consume('second', 2)).toBe(true)
    expect(limiter.consume('first', 1_000)).toBe(true)
  })

  it('fails closed when too many active installation counters exist', () => {
    const limiter = new InstallationLimiter(2, 1_000)
    for (let index = 0; index < 10_000; index += 1) {
      expect(limiter.consume(`installation-${index}`, 0)).toBe(true)
    }
    expect(limiter.consume('overflow', 1)).toBe(false)
    expect(limiter.consume('installation-0', 1)).toBe(true)
    expect(limiter.consume('overflow', 1_000)).toBe(true)
  })
})