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import { StrictMode, Suspense } from 'react'import { fireEvent, render } from '@testing-library/react'import * as O from 'optics-ts'import { atom, useAtom } from 'jotai'import type { SetStateAction } from 'jotai'import { focusAtom } from 'jotai/optics'import { getTestProvider } from '../testUtils'
const Provider = getTestProvider()
const succ = (input: number) => input + 1
it('basic derivation using focus works', async () => {  const bigAtom = atom({ a: 0 })  const focusFunction = (optic: O.OpticFor<{ a: number }>) => optic.prop('a')
  const Counter = () => {    const [count, setCount] = useAtom(focusAtom(bigAtom, focusFunction))    const [bigAtomValue] = useAtom(bigAtom)    return (      <>        <div>bigAtom: {JSON.stringify(bigAtomValue)}</div>        <div>count: {count}</div>        <button onClick={() => setCount(succ)}>incr</button>        <button onClick={() => setCount(0)}>set zero</button>      </>    )  }
  const { getByText, findByText } = render(    <StrictMode>      <Provider>        <Counter />      </Provider>    </StrictMode>  )
  await findByText('count: 0')  await findByText('bigAtom: {"a":0}')
  fireEvent.click(getByText('incr'))  await findByText('count: 1')  await findByText('bigAtom: {"a":1}')
  fireEvent.click(getByText('incr'))  await findByText('count: 2')  await findByText('bigAtom: {"a":2}')
  fireEvent.click(getByText('set zero'))  await findByText('count: 0')  await findByText('bigAtom: {"a":0}')})
it('focus on an atom works', async () => {  const bigAtom = atom({ a: 0 })  const focusFunction = (optic: O.OpticFor<{ a: number }>) => optic.prop('a')
  const Counter = () => {    const [count, setCount] = useAtom(focusAtom(bigAtom, focusFunction))    const [bigAtomValue] = useAtom(bigAtom)    return (      <>        <div>bigAtom: {JSON.stringify(bigAtomValue)}</div>        <div>count: {count}</div>        <button onClick={() => setCount(succ)}>button</button>      </>    )  }
  const { getByText, findByText } = render(    <StrictMode>      <Provider>        <Counter />      </Provider>    </StrictMode>  )
  await findByText('count: 0')  await findByText('bigAtom: {"a":0}')
  fireEvent.click(getByText('button'))  await findByText('count: 1')  await findByText('bigAtom: {"a":1}')})
it('double-focus on an atom works', async () => {  const bigAtom = atom({ a: { b: 0 } })  const atomA = focusAtom(bigAtom, (optic) => optic.prop('a'))  const atomB = focusAtom(atomA, (optic) => optic.prop('b'))
  const Counter = () => {    const [bigAtomValue, setBigAtom] = useAtom(bigAtom)    const [atomAValue, setAtomA] = useAtom(atomA)    const [atomBValue, setAtomB] = useAtom(atomB)    return (      <>        <div>bigAtom: {JSON.stringify(bigAtomValue)}</div>        <div>atomA: {JSON.stringify(atomAValue)}</div>        <div>atomB: {JSON.stringify(atomBValue)}</div>        <button onClick={() => setBigAtom((v) => ({ a: { b: v.a.b + 1 } }))}>          inc bigAtom        </button>        <button onClick={() => setAtomA((v) => ({ b: v.b + 2 }))}>          inc atomA        </button>        <button onClick={() => setAtomB((v) => v + 3)}>inc atomB</button>      </>    )  }
  const { getByText, findByText } = render(    <StrictMode>      <Provider>        <Counter />      </Provider>    </StrictMode>  )
  await findByText('bigAtom: {"a":{"b":0}}')  await findByText('atomA: {"b":0}')  await findByText('atomB: 0')
  fireEvent.click(getByText('inc bigAtom'))  await findByText('bigAtom: {"a":{"b":1}}')  await findByText('atomA: {"b":1}')  await findByText('atomB: 1')
  fireEvent.click(getByText('inc atomA'))  await findByText('bigAtom: {"a":{"b":3}}')  await findByText('atomA: {"b":3}')  await findByText('atomB: 3')
  fireEvent.click(getByText('inc atomB'))  await findByText('bigAtom: {"a":{"b":6}}')  await findByText('atomA: {"b":6}')  await findByText('atomB: 6')})
it('focus on async atom works', async () => {  const baseAtom = atom({ count: 0 })  const asyncAtom = atom(    (get) => Promise.resolve(get(baseAtom)),    (_get, set, param: SetStateAction<{ count: number }>) => {      set(baseAtom, param)    }  )  const focusFunction = (optic: O.OpticFor<{ count: number }>) =>    optic.prop('count')
  const Counter = () => {    const [count, setCount] = useAtom(focusAtom(asyncAtom, focusFunction))    const [asyncValue, setAsync] = useAtom(asyncAtom)    const [baseValue, setBase] = useAtom(baseAtom)    return (      <>        <div>baseAtom: {JSON.stringify(baseValue)}</div>        <div>asyncAtom: {JSON.stringify(asyncValue)}</div>        <div>count: {count}</div>        <button onClick={() => setCount(succ)}>incr count</button>        <button onClick={() => setAsync((v) => ({ count: v.count + 1 }))}>          incr async        </button>        <button onClick={() => setBase((v) => ({ count: v.count + 1 }))}>          incr base        </button>      </>    )  }
  const { getByText, findByText } = render(    <StrictMode>      <Provider>        <Suspense fallback={<div>Loading...</div>}>          <Counter />        </Suspense>      </Provider>    </StrictMode>  )
  await findByText('baseAtom: {"count":0}')  await findByText('asyncAtom: {"count":0}')  await findByText('count: 0')
  fireEvent.click(getByText('incr count'))  await findByText('baseAtom: {"count":1}')  await findByText('asyncAtom: {"count":1}')  await findByText('count: 1')
  fireEvent.click(getByText('incr async'))  await findByText('baseAtom: {"count":2}')  await findByText('asyncAtom: {"count":2}')  await findByText('count: 2')
  fireEvent.click(getByText('incr base'))  await findByText('baseAtom: {"count":3}')  await findByText('asyncAtom: {"count":3}')  await findByText('count: 3')})
it('basic derivation using focus with scope works', async () => {  const scope = Symbol()  const bigAtom = atom({ a: 0 })  const focusFunction = (optic: O.OpticFor<{ a: number }>) => optic.prop('a')
  const Counter = () => {    const [count, setCount] = useAtom(focusAtom(bigAtom, focusFunction), scope)    const [bigAtomValue] = useAtom(bigAtom, scope)    return (      <>        <div>bigAtom: {JSON.stringify(bigAtomValue)}</div>        <div>count: {count}</div>        <button onClick={() => setCount(succ)}>incr</button>      </>    )  }
  const { getByText, findByText } = render(    <StrictMode>      <Provider scope={scope}>        <Counter />      </Provider>    </StrictMode>  )
  await findByText('count: 0')  await findByText('bigAtom: {"a":0}')
  fireEvent.click(getByText('incr'))  await findByText('count: 1')  await findByText('bigAtom: {"a":1}')})