import { describe, expect, it } from 'vitest'

import { buildSearchUpdateArgs } from './nuqs-tanstack-adapter'

describe('buildSearchUpdateArgs (custom nuqs adapter)', () => {
  it('targets the current pathname with the search state as a record', () => {
    // The regression we fixed: the stock tanstack-router adapter navigated to
    // a relative `?provider=...`, which TanStack resolved by appending —
    // landing on `/auth/providers/?provider=...` (trailing slash injected).
    expect(buildSearchUpdateArgs('/auth/providers', new URLSearchParams('provider=apple'))).toEqual(
      { to: '/auth/providers', search: { provider: 'apple' } }
    )
  })

  it('returns an empty search record when every param is cleared', () => {
    // `search: {}` on TanStack navigate clears every param.
    expect(buildSearchUpdateArgs('/auth/providers', new URLSearchParams())).toEqual({
      to: '/auth/providers',
      search: {},
    })
  })

  it('keeps values verbatim, including newlines and other control chars', () => {
    // The second regression we fixed: rendering the query string into the
    // navigate `to` sent it through TanStack's path interpolation, which
    // percent-decodes and strips control characters — Logs Explorer's
    // multi-line SQL in `s` lost every newline (`desc\nlimit 5` became
    // `desclimit 5`). Passing a search *record* keeps values untouched.
    const sql = "select *\nfrom logs\nwhere source = 'edge'\norder by timestamp desc\nlimit 5"
    const params = new URLSearchParams()
    params.set('s', sql)
    expect(buildSearchUpdateArgs('/project/abc/logs/explorer', params).search).toEqual({ s: sql })
  })

  it('preserves repeated keys as arrays', () => {
    expect(
      buildSearchUpdateArgs('/advisors/security', new URLSearchParams('f=a&f=b&page=2')).search
    ).toEqual({ f: ['a', 'b'], page: '2' })
  })

  it('strips a trailing slash from the pathname, but keeps the root "/"', () => {
    const empty = new URLSearchParams()
    expect(buildSearchUpdateArgs('/auth/providers/', empty).to).toBe('/auth/providers')
    expect(buildSearchUpdateArgs('/', empty).to).toBe('/')
    expect(buildSearchUpdateArgs('', empty).to).toBe('/')
  })
})