Implement routing, history state & spa config

client/nginx/bitfeed.conf.template

@@ -1,6 +1,7 @@
 map $sent_http_content_type $expires {
     default                 off;
     text/css                max;
+    text/json               max;
     application/javascript  max;
 }
 
@@ -14,15 +15,10 @@ server {
 
     server_name client;
 
-    location = / {
+    location ~* \.(html)$ {
             add_header Cache-Control 'no-cache';
     }
 
-    location / {
-            try_files $uri $uri/ =404;
-            expires $expires;
-    }
-
     location /api {
             proxy_cache bitfeed;
             proxy_cache_revalidate on;
@@ -42,6 +38,11 @@ server {
             proxy_set_header        Host $http_host;
             proxy_set_header        X-Real-IP $remote_addr;
     }
+
+    location / {
+            try_files $uri $uri/ /index.html;
+            expires $expires;
+    }
 }
 
 upstream wsmonobackend {

client/package.json

@@ -4,7 +4,7 @@
   "scripts": {
     "build": "rollup -c",
     "dev": "rollup -c -w",
-    "start": "sirv public"
+    "start": "sirv public --single"
   },
   "dependencies": {
     "@babel/core": "^7.16.5",

client/src/App.svelte

@@ -2,9 +2,12 @@
 	import TxViz from './components/TxViz.svelte'
 	import analytics from './utils/analytics.js'
 	import config from './config.js'
+	import Router from './controllers/Router.js'
 	import {settings} from './stores.js'
 
 	if (!$settings.noTrack && config.public) analytics.init()
+
+	const router = new Router(window.location.pathname)
 </script>
 
 <main>

client/src/components/BlockInfo.svelte

@@ -115,9 +115,9 @@
   async function explorePrevBlock (e) {
     e.preventDefault()
     if (!$loading && block) {
-      $loading = true
+      loading.increment()
       await searchBlockHeight(block.height - 1)
-      $loading = false
+      loading.decrement()
     }
   }
 
@@ -125,9 +125,9 @@
     e.preventDefault()
     if (!$loading && block) {
       if (block.height + 1 < $latestBlockHeight) {
-        $loading = true
+        loading.increment()
         await searchBlockHeight(block.height + 1)
-        $loading = false
+        loading.decrement()
       } else {
         dispatch('quitExploring')
       }

client/src/components/DonationOverlay.svelte

@@ -17,7 +17,7 @@ import clipboardIcon from '../assets/icon/cil-clipboard.svg'
 import twitterIcon from '../assets/icon/cib-twitter.svg'
 import { fade, fly } from 'svelte/transition'
 import { durationFormat } from '../utils/format.js'
-import { overlay, tiers } from '../stores.js'
+import { overlay, tiers, urlPath } from '../stores.js'
 import QRCode from 'qrcode'
 
 let tab = 'form' // form | invoice | success
@@ -164,6 +164,7 @@ $: {
 }
 $: {
   if ($overlay === 'donation') {
+    $urlPath = '/donate'
     startExpiryTimer()
     stopPollingInvoice()
     pollingEnabled = true
@@ -416,9 +417,13 @@ async function copyInvoice () {
   }
   analytics.trackEvent('donations', 'invoice', 'copy')
 }
+
+function onClose () {
+  $urlPath = "/"
+}
 </script>
 
-<Overlay name="donation" fullSize>
+<Overlay name="donation" fullSize on:close={onClose}>
   <section class="donation-modal">
     <div class="tab-nav">
       <button class="to left" class:disabled={!canTabLeft} on:click={tabLeft}>&larr;</button>

client/src/components/SearchBar.svelte

@@ -54,7 +54,7 @@ async function searchSubmit (e) {
   e.preventDefault()
 
   if (matchedQuery && matchedQuery.query !== 'address') {
-    $loading++
+    loading.increment()
     let searchErr
     switch(matchedQuery.query) {
       case 'txid':
@@ -79,7 +79,7 @@ async function searchSubmit (e) {
     }
     if (searchErr == null) errorMessage = null
     else handleSearchError(searchErr)
-    $loading--
+    loading.decrement()
   } else {
     errorMessage = 'enter a transaction id, block hash or block height'
   }

client/src/components/TransactionOverlay.svelte

@@ -3,7 +3,7 @@ import Overlay from '../components/Overlay.svelte'
 import Icon from './Icon.svelte'
 import BookmarkIcon from '../assets/icon/cil-bookmark.svg'
 import { longBtcFormat, numberFormat, feeRateFormat, dateFormat } from '../utils/format.js'
-import { exchangeRates, settings, sidebarToggle, newHighlightQuery, highlightingFull, detailTx, pageWidth, latestBlockHeight, highlightInOut, loading } from '../stores.js'
+import { exchangeRates, settings, sidebarToggle, newHighlightQuery, highlightingFull, detailTx, pageWidth, latestBlockHeight, highlightInOut, loading, urlPath } from '../stores.js'
 import { formatCurrency } from '../utils/fx.js'
 import { hlToHex, mixColor, teal, purple } from '../utils/color.js'
 import { SPKToAddress } from '../utils/encodings.js'
@@ -14,6 +14,7 @@ import { fade } from 'svelte/transition'
 function onClose () {
   $detailTx = null
   $highlightInOut = null
+  $urlPath = "/"
 }
 
 function formatBTC (sats) {
@@ -271,16 +272,16 @@ async function clickItem (item) {
 
 async function goToInput(e, input) {
   e.preventDefault()
-  $loading++
+  loading.increment()
   await searchTx(input.prev_txid, null, input.prev_vout)
-  $loading--
+  loading.decrement()
 }
 
 async function goToOutput(e, output) {
   e.preventDefault()
-  $loading++
+  loading.increment()
   await searchTx(output.spend.txid, output.spend.vin)
-  $loading--
+  loading.decrement()
 }
 </script>
 

client/src/controllers/Router.js

@@ -0,0 +1,104 @@
+import { urlPath, settings, loading, detailTx, highlightInOut, explorerBlockData, overlay } from '../stores.js'
+import { searchTx, searchBlockHash, searchBlockHeight } from '../utils/search.js'
+
+export default class Router {
+  constructor (initialPath = '/') {
+    this.path = initialPath
+    this.apply(initialPath)
+    urlPath.subscribe(val => {
+      if (val != null) {
+        this.pushHistory(val)
+        this.path = val
+      }
+    })
+    window.addEventListener('popstate', e => {
+      if (e && e.state && e.state.path) {
+        this.path = e.state.path
+        this.apply(e.state.path)
+      }
+    })
+  }
+
+  pushHistory (path, replace = false) {
+    if (replace) {
+      window.history.replaceState({path}, "", path, window.history.state)
+    } else if (path !== this.path) {
+      window.history.pushState({path}, "", path)
+    }
+  }
+
+  clearPath () {
+    urlPath.set("/")
+  }
+
+  apply (path) {
+    const parts = path.split("/")
+    if (path === '/') {
+      detailTx.set(null)
+      highlightInOut.set(null)
+      urlPath.set("/")
+      explorerBlockData.set(null)
+      overlay.set(null)
+    } else {
+      switch (parts[1]) {
+        case 'block':
+          if (parts[2] === "height") {
+            try {
+              const height = parseInt(parts[3])
+              this.goToBlockHeight(height)
+            } catch (err) {
+              // ??
+            }
+          } else if (parts[2]) {
+            this.goToBlock(parts[2])
+          }
+        break;
+
+        case 'tx':
+          if (parts[2]) {
+            this.goToTransaction(parts[2])
+          }
+        break;
+
+        case 'donate':
+          overlay.set('donation')
+        break;
+      }
+    }
+  }
+
+  async goToBlock (blockhash) {
+    loading.increment()
+    await searchBlockHash(blockhash)
+    loading.decrement()
+  }
+
+  async goToBlockHeight (height) {
+    loading.increment()
+    await searchBlockHeight(height)
+    loading.decrement()
+  }
+
+  async goToTransaction (q) {
+    loading.increment()
+    const parts = q.split(":")
+    let txid, input, output
+    if (parts.length) {
+      if (parts[0].length == 64) {
+        txid = parts[0]
+        output = parseInt(parts[1])
+        if (isNaN(output)) output = null
+      } else if (parts[1].length == 64) {
+        txid = parts[1]
+        input = parseInt(parts[0])
+        if (isNaN(input)) input = null
+      } else {
+        // invalid
+      }
+    } else {
+      txid = q
+    }
+    await searchTx(txid, input, output)
+    loading.decrement()
+  }
+}

client/src/controllers/TxController.js

@@ -6,7 +6,7 @@ import BitcoinBlock from '../models/BitcoinBlock.js'
 import TxSprite from '../models/TxSprite.js'
 import { FastVertexArray } from '../utils/memory.js'
 import { searchTx, fetchSpends, addSpends } from '../utils/search.js'
-import { overlay, txCount, mempoolCount, mempoolScreenHeight, blockVisible, currentBlock, selectedTx, detailTx, blockAreaSize, highlight, colorMode, blocksEnabled, latestBlockHeight, explorerBlockData, blockTransitionDirection, loading } from '../stores.js'
+import { overlay, txCount, mempoolCount, mempoolScreenHeight, blockVisible, currentBlock, selectedTx, detailTx, blockAreaSize, highlight, colorMode, blocksEnabled, latestBlockHeight, explorerBlockData, blockTransitionDirection, loading, urlPath } from '../stores.js'
 import config from "../config.js"
 
 export default class TxController {
@@ -322,6 +322,7 @@ export default class TxController {
       prevBlockScene.expire(2000)
       this.explorerBlockScene = null
       this.explorerBlock = null
+      urlPath.set("/")
     }
     if (this.blockScene && this.block) {
       blockTransitionDirection.set('right')
@@ -397,6 +398,7 @@ export default class TxController {
         } else {
           const spendResult = await fetchSpends(selected.id)
           if (spendResult) selected = addSpends(selected, spendResult)
+          urlPath.set(`/tx/${selected.id}`)
           detailTx.set(selected)
           overlay.set('tx')
         }

client/src/stores.js

@@ -170,3 +170,5 @@ export const highlightInOut = writable(null)
 export const loading = createCounter()
 export const explorerBlockData = writable(null)
 export const blockTransitionDirection = writable(null)
+
+export const urlPath = writable(null)

client/src/utils/search.js

@@ -1,7 +1,7 @@
 import api from './api.js'
 import BitcoinTx from '../models/BitcoinTx.js'
 import BitcoinBlock from '../models/BitcoinBlock.js'
-import { detailTx, selectedTx, currentBlock, explorerBlockData, overlay, highlightInOut } from '../stores.js'
+import { detailTx, selectedTx, currentBlock, explorerBlockData, overlay, highlightInOut, urlPath } from '../stores.js'
 import { addressToSPK } from './encodings.js'
 
 // Quick heuristic matching to guess what kind of search a query is for
@@ -198,6 +198,13 @@ function addSpends(tx, spends) {
 export {addSpends as addSpends}
 
 export async function searchTx (txid, input, output) {
+  if (input != null) {
+    urlPath.set(`/tx/${input}:${txid}`)
+  } else if (output != null) {
+    urlPath.set(`/tx/${txid}:${output}`)
+  } else {
+    urlPath.set(`/tx/${txid}`)
+  }
   try {
     let searchResult = await fetchTx(txid)
     const spendResult = await fetchSpends(txid)
@@ -218,6 +225,7 @@ export async function searchTx (txid, input, output) {
 }
 
 export async function searchBlockHash (hash) {
+  urlPath.set(`/block/${hash}`)
   try {
     const searchResult = await fetchBlockByHash(hash)
     if (searchResult) {
@@ -235,6 +243,7 @@ export async function searchBlockHash (hash) {
 }
 
 export async function searchBlockHeight (height) {
+  urlPath.set(`/block/height/${height}`)
   try {
     const searchResult = await fetchBlockByHeight(height)
     if (searchResult) {

server/lib/spend_index.ex

@@ -85,6 +85,7 @@ defmodule BitcoinStream.Index.Spend do
 
   @impl true
   def handle_cast({:block_disconnected, hash}, [dbref, indexed, done]) do
+    Logger.info("block disconnected: #{hash}");
     if (indexed != nil and done) do
       block_disconnected(dbref, hash)
     end