'use strict'

const test = require('node:test')
const assert = require('node:assert/strict')

// Register the page-controller tests shared by the New Post and Set Name pages.
// Both pages extend PageController, so the in-flight flag, missing-handler, and
// broadcast-failure behaviors are identical; only the page-specific pieces
// differ. `cfg` supplies:
//   buildPage  - () => ({ wallet, page, navigations }) with a working handler
//   buildBarePage - (navigations) => a page with no action handler
//   busyFlag   - the page's in-flight flag name ('posting' or 'settingName')
//   prefix     - the broadcast prefix ('6d02' or '6d01')
function registerPageControllerTests (cfg) {
  const { buildPage, buildBarePage, busyFlag, prefix } = cfg

  test(`${busyFlag} is true while a submit is in flight and false once it settles`, async () => {
    const { wallet, page } = buildPage()

    // Defer the broadcast so we can observe the in-flight state.
    let resolveSend
    wallet.sendOpReturn = async () => new Promise((resolve) => { resolveSend = resolve })
    page.setInput('hello')

    assert.equal(page[busyFlag], false)
    const pending = page.submit()
    assert.equal(page[busyFlag], true)

    // Yield until the async chain reaches the deferred sendOpReturn call.
    await new Promise((resolve) => setImmediate(resolve))
    assert.equal(typeof resolveSend, 'function')
    resolveSend('in-flight-txid')
    await pending
    assert.equal(page[busyFlag], false)
  })

  test('submitting without a handler reports an error and does not navigate', async () => {
    const navigations = []
    const page = buildBarePage(navigations)
    page.setInput('hello')

    const result = await page.submit()

    assert.equal(result.ok, false)
    assert.deepEqual(navigations, [])
  })

  test('a failed broadcast surfaces the real error and does not navigate', async () => {
    const { wallet, page, navigations } = buildPage()
    wallet.failWith = 'BCH UTXO list is empty'
    page.setInput('hello')

    const result = await page.submit()

    assert.equal(result.ok, false)
    assert.equal(page.submitError, 'broadcast')
    assert.match(page.broadcastError, /BCH UTXO list is empty/)
    // The broadcast was attempted (recorded) before it failed.
    assert.equal(wallet.broadcasts.length, 1)
    assert.equal(wallet.broadcasts[0].prefix, prefix)
    // The user stays on the page.
    assert.deepEqual(navigations, [])
  })
}

// Register the page-submit tests shared by the New Post and Reply Thread pages.
// Both pages extend PageController and submit a single action, so the valid,
// empty, and over-long submit behaviors are identical; only the page-specific
// pieces differ. `cfg` supplies:
//   buildPage  - () => ({ wallet, store, page, navigations })
//   verb       - the action verb for test names ('posting' or 'submitting')
//   label      - the noun for test names ('memo' or 'reply')
//   busyFlag   - the page's in-flight flag name ('posting' or 'replying')
//   prefix     - the broadcast prefix ('6d02' or '6d03')
//   validationCode - the validation error code
//   lengthCode     - the length error code
//   MAX        - the length limit
//   successPath    - the navigation path on success, or null for no navigation
//   assertBroadcastMsg - (broadcast) => asserts the broadcast message (optional)
//   assertStore  - (store, wallet) => asserts the store reflects the value
//   assertStoreEmpty - (store, wallet) => asserts the store was not updated
function registerPageSubmitTests (cfg) {
  const { buildPage, verb, label, busyFlag, prefix, validationCode, lengthCode, MAX, successPath, assertBroadcastMsg, assertStore, assertStoreEmpty } = cfg

  test(`${verb} a valid ${label} broadcasts the ${prefix} prefix and reflects it`, async () => {
    const { wallet, store, page, navigations } = buildPage()
    page.setInput('hello memo')

    const result = await page.submit()

    assert.equal(result.ok, true)
    assert.equal(page[busyFlag], false)
    assert.equal(wallet.broadcasts.length, 1)
    assert.equal(wallet.broadcasts[0].prefix, prefix)
    if (assertBroadcastMsg) assertBroadcastMsg(wallet.broadcasts[0])
    assert.deepEqual(navigations, successPath ? [successPath] : [])
    assertStore(store, wallet)
  })

  test(`${verb} an empty ${label} is rejected with a validation error and nothing is broadcast`, async () => {
    const { wallet, store, page, navigations } = buildPage()
    page.setInput('')

    const result = await page.submit()

    assert.equal(result.ok, false)
    assert.equal(result.error, validationCode)
    assert.equal(page.submitError, validationCode)
    assert.equal(page[busyFlag], false)
    assert.equal(wallet.broadcasts.length, 0)
    assertStoreEmpty(store, wallet)
    assert.deepEqual(navigations, [])
  })

  test(`${verb} an over-long ${label} is rejected with a length error and nothing is broadcast`, async () => {
    const { wallet, store, page, navigations } = buildPage()
    page.setInput('y'.repeat(MAX + 1))

    const result = await page.submit()

    assert.equal(result.ok, false)
    assert.equal(result.error, lengthCode)
    assert.equal(page.submitError, lengthCode)
    assert.equal(page[busyFlag], false)
    assert.equal(wallet.broadcasts.length, 0)
    assertStoreEmpty(store, wallet)
    assert.deepEqual(navigations, [])
  })
}

module.exports = { registerPageControllerTests, registerPageSubmitTests }