import { describe, it } from 'vitest'

import { jsonp } from '../../packages/jsonp/src/index'

import { InitAppAndTest } from '../../test_helpers/initAppAndTest'

describe('jsonp', () => {

it('when no callback is defined', async () => {

const { fetch } = InitAppAndTest((req, res) => jsonp(req, res)({ jsonp: 'value' }))

await fetch('/').expect('Content-Type', 'application/json; charset=utf-8').expect(200, '{"jsonp":"value"}')

})

it('should preserve existing Content-Type header when already set', async () => {

const { fetch } = InitAppAndTest((req, res) => {

res.set('Content-Type', 'application/custom+json')

jsonp(req, res)({ jsonp: 'value' })

})

// Should preserve the pre-set Content-Type and not override with application/json

await fetch('/').expect('Content-Type', 'application/custom+json; charset=utf-8').expect(200, '{"jsonp":"value"}')

})

it('should use callback with jsonp when defined', async () => {

const { fetch } = InitAppAndTest((req, res) => jsonp(req, res)({ jsonp: 'value' }))

await fetch('/?callback=something')

.expect('Content-Type', 'text/javascript; charset=utf-8')

.expect(200, '/**/ typeof something === \'function\' && something({"jsonp":"value"});')

})

it('should change <>& into UTF', async () => {

const { fetch } = InitAppAndTest((req, res) =>

jsonp(req, res)({ jsonp: '<value>& value' }, { escape: true, spaces: 1 })

)

await fetch('/?callback=something')

.expect('Content-Type', 'text/javascript; charset=utf-8')

.expect(

200,

"/**/ typeof something === 'function' && something({" +

'\n' +

' "jsonp": "\\u003cvalue\\u003e\\u0026 value"' +

'\n' +

'});'

)

})

})