New posts display TXID after broadcast

psf-memo-client/acceptance/lib/handlers.js

@@ -1109,6 +1109,56 @@ const handlers = [
       }
     }
   },
+  {
+    name: 'page shows success modal with txid',
+    pattern: /^the new post page shows a success modal with the post txid$/,
+    run (m, example, world) {
+      const page = world.newPage
+      const txid = page.lastResult && page.lastResult.txid
+      if (!page.showResultModal) {
+        throw new Error('Expected the new post success modal to be visible.')
+      }
+      if (!page.lastResult || !page.lastResult.ok) {
+        throw new Error('Expected a successful post result in the modal.')
+      }
+      if (!txid) {
+        throw new Error('Expected the success modal to include a post txid.')
+      }
+      const expectedUrl = NewPostPage.explorerUrl(txid)
+      if (page.explorerUrl(txid) !== expectedUrl) {
+        throw new Error(`Expected explorer URL ${expectedUrl}, got ${page.explorerUrl(txid)}.`)
+      }
+      if (!expectedUrl.startsWith(NewPostPage.EXPLORER_TX_BASE + '/')) {
+        throw new Error(`Explorer URL ${expectedUrl} is not on bch.loping.net.`)
+      }
+    }
+  },
+  {
+    name: 'page shows failure modal containing text',
+    pattern: /^the new post page shows a failure modal containing "<([A-Za-z0-9_]+)>"$/,
+    run (m, example, world) {
+      const param = m[1]
+      const expected = example[param]
+      const page = world.newPage
+      const actual = (page.lastResult && page.lastResult.message) || page.broadcastError || ''
+      if (!page.showResultModal) {
+        throw new Error('Expected the new post failure modal to be visible.')
+      }
+      if (page.lastResult && page.lastResult.ok) {
+        throw new Error('Expected a failed post result in the modal.')
+      }
+      if (!actual.includes(expected)) {
+        throw new Error(`Expected a failure modal containing "${expected}", got "${actual}".`)
+      }
+    }
+  },
+  {
+    name: 'dismiss result modal',
+    pattern: /^I dismiss the result modal$/,
+    run (m, example, world) {
+      world.newPage.dismissResult()
+    }
+  },
   {
     name: 'page shows validation/length error',
     pattern: /^the (?:app|new post page) shows a (validation|length) error$/,

psf-memo-client/specs/memo-new.feature

@@ -14,6 +14,9 @@ Feature: New Post Page
     When I type a memo with the text "<message>"
     When I click the post button
     Then the app broadcasts an OP_RETURN transaction with the Memo post prefix
+    Then the new post page shows a success modal with the post txid
+    Then I remain on the path /posts/new
+    When I dismiss the result modal
     Then I navigate to the path /posts/recent
     Then the feed shows a new post from my address with the text "<message>"
 
@@ -66,7 +69,9 @@ Feature: New Post Page
     When I type a memo with the text "<message>"
     When I click the post button
     Then the app attempts to broadcast an OP_RETURN transaction with the Memo post prefix
-    Then the new post page shows an error containing "<broadcast_error>"
+    Then the new post page shows a failure modal containing "<broadcast_error>"
+    Then I remain on the path /posts/new
+    When I dismiss the result modal
     Then I remain on the path /posts/new
 
     Examples:

psf-memo-client/src/components/app-body/new-post/index.js

@@ -1,12 +1,13 @@
 /*
   New Post view: compose and broadcast a Memo post, with a character counter
-  that counts down from the memo limit. On success the user is navigated to the
+  that counts down from the memo limit. After broadcast, a modal reports
-  recent feed.
+  success (txid + explorer link) or failure. Dismissing a successful result
+  navigates to the recent feed.
 */
 
 // Global npm libraries
-import React, { useState } from 'react'
+import React, { useRef, useState } from 'react'
-import { Container, Row, Col, Form, Button } from 'react-bootstrap'
+import { Container, Row, Col, Form, Button, Modal } from 'react-bootstrap'
 import { useNavigate } from 'react-router-dom'
 
 // Local libraries
@@ -21,8 +22,13 @@ function NewPost (props) {
   const [input, setInput] = useState('')
   const [err, setErr] = useState('')
   const [posting, setPosting] = useState(false)
+  const [showResultModal, setShowResultModal] = useState(false)
+  const [lastResult, setLastResult] = useState(null)
+  const pageRef = useRef(null)
 
   const remaining = maxChars - input.length
+  const resultTxid = lastResult && lastResult.ok ? lastResult.txid : ''
+  const explorerUrl = NewPostPage.explorerUrl(resultTxid)
 
   async function handleSubmit (event) {
     event.preventDefault()
@@ -32,28 +38,39 @@ function NewPost (props) {
     try {
       const memoPost = new MemoPost({ wallet: appData?.wallet })
       const page = new NewPostPage({ memoPost, navigate })
+      pageRef.current = page
       page.setInput(input)
 
       const result = await page.submit()
+      setLastResult(result)
       if (!result.ok) {
         if (result.error === 'memo_length') {
           setErr(`Memo is too long. Maximum is ${maxChars} characters.`)
         } else if (result.error === 'memo_validation') {
           setErr('Memo must not be empty.')
-        } else if (result.message) {
-          setErr(`Failed to broadcast: ${result.message}`)
-        } else {
-          setErr('Failed to post memo.')
         }
       }
-      // On success page.submit() navigated to the recent feed.
+      if (page.showResultModal) {
+        setShowResultModal(true)
+      }
     } catch (submitErr) {
-      setErr(submitErr.message)
+      const result = { ok: false, error: 'broadcast', message: submitErr.message }
+      setLastResult(result)
+      setShowResultModal(true)
     } finally {
       setPosting(false)
     }
   }
 
+  function handleDismissResult () {
+    if (pageRef.current) {
+      pageRef.current.dismissResult()
+    } else if (lastResult && lastResult.ok) {
+      navigate(NewPostPage.RECENT_FEED_PATH)
+    }
+    setShowResultModal(false)
+  }
+
   return (
     <Container>
       <Row className='justify-content-center'>
@@ -72,6 +89,7 @@ function NewPost (props) {
                 value={input}
                 onChange={(e) => setInput(e.target.value)}
                 placeholder='Write your Memo here...'
+                disabled={posting}
               />
             </Form.Group>
 
@@ -87,6 +105,43 @@ function NewPost (props) {
           </Form>
         </Col>
       </Row>
+
+      <Modal show={showResultModal} onHide={handleDismissResult} centered>
+        <Modal.Header closeButton>
+          <Modal.Title>
+            {lastResult && lastResult.ok ? 'Post published' : 'Post failed'}
+          </Modal.Title>
+        </Modal.Header>
+        <Modal.Body>
+          {lastResult && lastResult.ok
+            ? (
+              <>
+                <p>Your post was broadcast to the Bitcoin Cash network.</p>
+                <p className='new-post-txid mb-0'>
+                  Transaction ID:{' '}
+                  <a
+                    href={explorerUrl}
+                    target='_blank'
+                    rel='noreferrer'
+                    style={{ wordBreak: 'break-all' }}
+                  >
+                    {resultTxid}
+                  </a>
+                </p>
+              </>
+              )
+            : (
+              <p className='new-post-error mb-0'>
+                {(lastResult && lastResult.message) || 'Failed to post memo.'}
+              </p>
+              )}
+        </Modal.Body>
+        <Modal.Footer>
+          <Button variant='primary' onClick={handleDismissResult}>
+            Close
+          </Button>
+        </Modal.Footer>
+      </Modal>
     </Container>
   )
 }

psf-memo-client/src/services/new-post.js

@@ -5,8 +5,8 @@
   This is the testable controller behind the React "New Post" page. It wraps
   the Memo post behavior (src/services/memo-post.js) and adds page-level
   concerns: holding the current input, computing the remaining character count,
-  surfacing validation/length errors, and navigating to the recent feed after a
+  surfacing validation/length errors, showing a success/failure result after
-  successful post.
+  broadcast, and navigating to the recent feed when that result is dismissed.
 
   The memoPost and navigate concerns are injected so this module stays free of
   UI/network concerns; environmentally unsuitable I/O lives behind those small
@@ -18,6 +18,7 @@ const MemoPost = require('./memo-post')
 
 const NEW_POST_PATH = '/posts/new'
 const RECENT_FEED_PATH = '/posts/recent'
+const EXPLORER_TX_BASE = 'https://bch.loping.net/tx'
 
 class NewPostPage extends PageController {
   constructor (deps = {}) {
@@ -25,8 +26,11 @@ class NewPostPage extends PageController {
     this.memoPost = deps.memoPost || null
     this.menuLinks = deps.menuLinks || []
     this.posting = false
-    this.successPath = RECENT_FEED_PATH
+    // Navigation is deferred until the result modal is dismissed.
+    this.successPath = null
     this.validationCodes = ['memo_validation', 'memo_length']
+    this.showResultModal = false
+    this.lastResult = null
 
     // The navigation menu links to the new post page.
     this.addMenuLink(NEW_POST_PATH)
@@ -60,13 +64,45 @@ class NewPostPage extends PageController {
     }
     return this.memoPost.post(input)
   }
+
+  // Block explorer URL for a broadcast transaction.
+  explorerUrl (txid) {
+    return NewPostPage.explorerUrl(txid)
+  }
+
+  // Submit the memo. On broadcast success or failure, open the result modal
+  // instead of navigating. Validation errors stay on the form.
+  async submit () {
+    this.showResultModal = false
+    this.lastResult = null
+    const result = await super.submit()
+    this.lastResult = result
+    if (result.ok || result.error === 'broadcast') {
+      this.showResultModal = true
+    }
+    return result
+  }
+
+  // Dismiss the result modal. A successful post then navigates to the feed.
+  dismissResult () {
+    const shouldNavigate = Boolean(this.lastResult && this.lastResult.ok)
+    this.showResultModal = false
+    if (shouldNavigate) {
+      this.navigate(RECENT_FEED_PATH)
+    }
+  }
 }
 
 NewPostPage.NEW_POST_PATH = NEW_POST_PATH
 NewPostPage.RECENT_FEED_PATH = RECENT_FEED_PATH
+NewPostPage.EXPLORER_TX_BASE = EXPLORER_TX_BASE
+NewPostPage.explorerUrl = function (txid) {
+  if (!txid) return ''
+  return `${EXPLORER_TX_BASE}/${txid}`
+}
 
 module.exports = NewPostPage
 
 // mutate4javascript-manifest-begin
-// {"version":1,"tested_at":"2026-08-26T12:18:47.139Z","module_hash":"45d772cfe40b8a34018092abbe924c01cbde741c5cbaa737a283ba35214a99ff","functions":[{"id":"func/NewPostPage.constructor","name":"NewPostPage.constructor","line":23,"end_line":33,"hash":"686653c181941b27c19cd8c1f9fa7b3fee50db6e19c1e39d0db79e6bfbe52a81"},{"id":"func/NewPostPage.addMenuLink","name":"NewPostPage.addMenuLink","line":36,"end_line":39,"hash":"bac97164d2d70bfdb946c4d54e67983c43cad093bac558f1d169e1739ca97137"},{"id":"func/NewPostPage.hasMenuLink","name":"NewPostPage.hasMenuLink","line":42,"end_line":44,"hash":"7e1abf5d0833aaf3b3da3a024de9eb2b80da900b2930e832c7e92d77e0e50344"},{"id":"func/NewPostPage.remainingCount","name":"NewPostPage.remainingCount","line":47,"end_line":49,"hash":"521ce4ed841f62099529b327f2245a9e94c09af2f67ed5d91839e52607bcea37"},{"id":"func/NewPostPage._setBusy","name":"NewPostPage._setBusy","line":52,"end_line":54,"hash":"af4c51d75a9bbfc4d8c2566414ee950704d83831ad915ee04eea8bf2fab65a3e"},{"id":"func/NewPostPage._perform","name":"NewPostPage._perform","line":57,"end_line":62,"hash":"e66f893a4913b5d6f3cc4fcc1ad58e21557b4a316f0150050c961e3ece237795"}]}
+// {"version":1,"tested_at":"2026-09-13T13:36:17.184Z","module_hash":"65edafa07e390d316197347119a4d2a50c3fe73980c8e526f38fa0f66ee69689","functions":[{"id":"func/NewPostPage.constructor","name":"NewPostPage.constructor","line":24,"end_line":37,"hash":"1a42004b33ac28f396df02f70b2cec6a91f890d3a065aefe890c23cb1456ace3"},{"id":"func/NewPostPage.addMenuLink","name":"NewPostPage.addMenuLink","line":40,"end_line":43,"hash":"2bb99421f2cdbcf9a39f77244b250e4251b9bd3cc81a4f399589007f71486b79"},{"id":"func/NewPostPage.hasMenuLink","name":"NewPostPage.hasMenuLink","line":46,"end_line":48,"hash":"f2e167f20bd3040ebbcfaf3a3e95254333b9739e0fa93d7801ead542be2a15e3"},{"id":"func/NewPostPage.remainingCount","name":"NewPostPage.remainingCount","line":51,"end_line":53,"hash":"421d0af0e01278b479a5bb8d62d344498f875d188e8307eda420d637c23600d4"},{"id":"func/NewPostPage._setBusy","name":"NewPostPage._setBusy","line":56,"end_line":58,"hash":"1552af7690ee7a92b2a9ed84af1ba301c2468939b6994ca3942fe0b7004028fb"},{"id":"func/NewPostPage._perform","name":"NewPostPage._perform","line":61,"end_line":66,"hash":"c8b7394bcd5a2252278095e9af08cc5e76720b4fab08aa83218cb93fdb372407"},{"id":"func/NewPostPage.explorerUrl","name":"NewPostPage.explorerUrl","line":69,"end_line":71,"hash":"84a048fa78b38cef32573f1e31be11f870c765393213e59744d9799690da4d37"},{"id":"func/NewPostPage.submit","name":"NewPostPage.submit","line":75,"end_line":84,"hash":"1f15969b62987f29fbc310845716fe65c9ace8bec2f7bb2d8bee62e59b7cee95"},{"id":"func/NewPostPage.dismissResult","name":"NewPostPage.dismissResult","line":87,"end_line":93,"hash":"c155b35aedd68c7bbde87329ec086079621cf362ecf01472b65c7e442c9646b7"}]}
 // mutate4javascript-manifest-end

psf-memo-client/test/unit/new-post-page.test.js

@@ -0,0 +1,168 @@
+/*
+  Unit tests for the New Post page controller.
+
+  The page controller wraps the Memo post behavior, exposes a remaining
+  character count, shows a success/failure result after broadcast, and
+  navigates to the recent feed when that result is dismissed.
+*/
+
+'use strict'
+
+const test = require('node:test')
+const assert = require('node:assert/strict')
+const NewPostPage = require('../../src/services/new-post')
+const MemoPost = require('../../src/services/memo-post')
+
+const MY_ADDRESS = 'bitcoincash:qqlrzp23w08434twmvr4fxw672whkjy0py26r63g3d'
+const SAMPLE_TXID = '05280746adc9611baf0d6ae833c01343f19ef16a7c9434acc682dde129ae2622'
+
+function makeWallet (address = MY_ADDRESS, txid = SAMPLE_TXID) {
+  return {
+    walletInfo: { cashAddress: address },
+    broadcasts: [],
+    async getUtxos () {
+      return []
+    },
+    async sendOpReturn (msg, prefix) {
+      this.broadcasts.push({ msg, prefix })
+      if (this.failWith) throw new Error(this.failWith)
+      return txid
+    }
+  }
+}
+
+function makeMemoPost (opts = {}) {
+  const wallet = makeWallet(opts.address, opts.txid)
+  if (opts.failWith) wallet.failWith = opts.failWith
+  const feed = { posts: [], addPost (post) { this.posts.push(post) } }
+  return { wallet, feed, memoPost: new MemoPost({ wallet, feed }) }
+}
+
+test('the in-flight flag starts false', () => {
+  const page = new NewPostPage({ navigate: () => {} })
+
+  assert.equal(page.posting, false)
+})
+
+test('NEW_POST_PATH and RECENT_FEED_PATH constants', () => {
+  assert.equal(NewPostPage.NEW_POST_PATH, '/posts/new')
+  assert.equal(NewPostPage.RECENT_FEED_PATH, '/posts/recent')
+})
+
+test('explorerUrl builds a bch.loping.net transaction link', () => {
+  assert.equal(
+    NewPostPage.explorerUrl(SAMPLE_TXID),
+    `https://bch.loping.net/tx/${SAMPLE_TXID}`
+  )
+  assert.equal(NewPostPage.explorerUrl(''), '')
+  const page = new NewPostPage({ navigate: () => {} })
+  assert.equal(page.explorerUrl(SAMPLE_TXID), NewPostPage.explorerUrl(SAMPLE_TXID))
+})
+
+test('the new post page is linked from the navigation menu', () => {
+  const page = new NewPostPage({ navigate: () => {} })
+
+  assert.equal(page.hasMenuLink('/posts/new'), true)
+})
+
+test('remainingCount returns the full budget for empty input', () => {
+  const { memoPost } = makeMemoPost()
+  const page = new NewPostPage({ memoPost, navigate: () => {} })
+
+  assert.equal(page.remainingCount(), MemoPost.MAX_MEMO_CHARS)
+})
+
+test('remainingCount subtracts the character length of the input', () => {
+  const { memoPost } = makeMemoPost()
+  const page = new NewPostPage({ memoPost, navigate: () => {} })
+  page.setInput('hello')
+
+  assert.equal(page.remainingCount(), MemoPost.MAX_MEMO_CHARS - 5)
+})
+
+test('submit does not navigate until the success modal is dismissed', async () => {
+  const navigated = []
+  const { memoPost } = makeMemoPost()
+  const page = new NewPostPage({
+    memoPost,
+    navigate: (path) => navigated.push(path)
+  })
+  page.setInput('hello memo')
+
+  const result = await page.submit()
+
+  assert.equal(result.ok, true)
+  assert.equal(result.txid, SAMPLE_TXID)
+  assert.equal(page.showResultModal, true)
+  assert.equal(page.lastResult.txid, SAMPLE_TXID)
+  assert.deepEqual(navigated, [])
+
+  page.dismissResult()
+
+  assert.equal(page.showResultModal, false)
+  assert.deepEqual(navigated, [NewPostPage.RECENT_FEED_PATH])
+})
+
+test('submit records a validation error for empty input and does not open the modal', async () => {
+  const navigated = []
+  const { memoPost } = makeMemoPost()
+  const page = new NewPostPage({
+    memoPost,
+    navigate: (path) => navigated.push(path)
+  })
+  page.setInput('')
+
+  const result = await page.submit()
+
+  assert.equal(result.ok, false)
+  assert.equal(result.error, 'memo_validation')
+  assert.equal(page.showResultModal, false)
+  assert.deepEqual(navigated, [])
+})
+
+test('submit records a length error for over-long input and does not open the modal', async () => {
+  const { memoPost } = makeMemoPost()
+  const page = new NewPostPage({ memoPost, navigate: () => {} })
+  page.setInput('a'.repeat(MemoPost.MAX_MEMO_CHARS + 1))
+
+  const result = await page.submit()
+
+  assert.equal(result.ok, false)
+  assert.equal(result.error, 'memo_length')
+  assert.equal(page.showResultModal, false)
+})
+
+test('a failed broadcast opens the failure modal and stays on the page after dismiss', async () => {
+  const navigated = []
+  const { memoPost } = makeMemoPost({ failWith: 'Insufficient balance' })
+  const page = new NewPostPage({
+    memoPost,
+    navigate: (path) => navigated.push(path)
+  })
+  page.setInput('hello memo')
+
+  const result = await page.submit()
+
+  assert.equal(result.ok, false)
+  assert.equal(result.error, 'broadcast')
+  assert.match(result.message, /Insufficient balance/)
+  assert.equal(page.showResultModal, true)
+  assert.deepEqual(navigated, [])
+
+  page.dismissResult()
+
+  assert.equal(page.showResultModal, false)
+  assert.deepEqual(navigated, [])
+})
+
+test('submit records a broadcast error when no memo post handler is injected', async () => {
+  const page = new NewPostPage({ navigate: () => {} })
+  page.setInput('hello memo')
+
+  const result = await page.submit()
+
+  assert.equal(result.ok, false)
+  assert.equal(result.error, 'broadcast')
+  assert.match(result.message, /New post requires a memo post handler/)
+  assert.equal(page.showResultModal, true)
+})

test/unit/new-post.test.js

@@ -3,7 +3,7 @@
 
   Expresses the observable behavior described by specs/memo-new.feature:
     - posting a valid memo broadcasts an OP_RETURN with the Memo post prefix and
-      navigates the user to the recent feed.
+      navigates the user to the recent feed after the success modal is dismissed.
     - an empty memo is rejected with a validation error; nothing is broadcast.
     - an over-long memo is rejected with a length error; nothing is broadcast.
     - the character counter counts down from the memo limit.
@@ -79,7 +79,7 @@ registerPageSubmitTests({
   validationCode: 'memo_validation',
   lengthCode: 'memo_length',
   MAX,
-  successPath: '/posts/recent',
+  successPath: null,
   assertBroadcastMsg: (broadcast) => assert.equal(broadcast.msg, 'hello memo'),
   assertStore: (store) => assert.equal(store.posts[0].text, 'hello memo'),
   assertStoreEmpty: (store) => assert.equal(store.posts.length, 0)
@@ -110,6 +110,7 @@ test('a failed broadcast surfaces a different real error message', async () => {
 
   assert.equal(result.ok, false)
   assert.match(page.broadcastError, /Insufficient balance/)
+  assert.equal(page.showResultModal, true)
 })
 
 test('a broadcast failure with an empty message falls back to a string form', async () => {
@@ -126,4 +127,32 @@ test('a broadcast failure with an empty message falls back to a string form', as
   // The real (string) error is surfaced even though the message was empty.
   assert.equal(typeof page.broadcastError, 'string')
   assert.ok(page.broadcastError.length > 0)
+  assert.equal(page.showResultModal, true)
+})
+
+test('dismissing a successful result navigates to the recent feed', async () => {
+  const { page, navigations } = build()
+  page.setInput('hello memo')
+
+  const result = await page.submit()
+
+  assert.equal(result.ok, true)
+  assert.equal(page.showResultModal, true)
+  assert.deepEqual(navigations, [])
+
+  page.dismissResult()
+
+  assert.equal(page.showResultModal, false)
+  assert.deepEqual(navigations, [NewPostPage.RECENT_FEED_PATH])
+})
+
+test('dismissing a failed result stays on the new post page', async () => {
+  const { wallet, page, navigations } = build()
+  wallet.failWith = 'BCH UTXO list is empty'
+  page.setInput('hello memo')
+
+  await page.submit()
+  page.dismissResult()
+
+  assert.deepEqual(navigations, [])
 })