refactor: update tx speed network stats to use median latency for the…

… bucket with median load for 24h period (closes #112)

src/views/components/network/index.js

@@ -4,6 +4,7 @@ import BigNumber from 'bignumber.js'
 
 import { getNetwork, getNetworkStats, getNetworkWattHour } from '@core/network'
 import { getNetworkUnconfirmedBlockCount } from '@core/accounts'
+import { nanodb_actions } from '@core/nanodb'
 
 import Network from './network'
 
@@ -12,22 +13,51 @@ const mapStateToProps = createSelector(
   getNetworkStats,
   getNetworkWattHour,
   getNetworkUnconfirmedBlockCount,
-  (network, stats, wattHour, unconfirmed_block_pool_count) => {
+  (state) => state.get('nanodb'),
+  (network, stats, wattHour, unconfirmed_block_pool_count, nanodb) => {
     const send_volume_raw = network.getIn(
       ['stats', 'nanodb', 'send_volume_last_24_hours'],
       0
     )
     const send_volume_nano = BigNumber(send_volume_raw)
       .shiftedBy(-30)
       .toNumber()
+
+    const confirmation_latency_by_bucket = nanodb.getIn(
+      ['block_confirmed_summary_24h', 'confirmation_latency_ms_by_bucket'],
+      {}
+    )
+
+    const buckets_sorted_by_confirmed_blocks = Object.keys(
+      confirmation_latency_by_bucket
+    ).sort((a, b) => {
+      return (
+        confirmation_latency_by_bucket[a].confirmed_blocks -
+        confirmation_latency_by_bucket[b].confirmed_blocks
+      )
+    })
+
+    const median_bucket =
+      buckets_sorted_by_confirmed_blocks[
+        Math.floor(buckets_sorted_by_confirmed_blocks.length / 2)
+      ]
+
+    const median_latency_of_median_bucket_by_confirmed_blocks_24h =
+      confirmation_latency_by_bucket[median_bucket]?.median
+
     return {
       network,
       stats,
       wattHour,
       unconfirmed_block_pool_count,
-      send_volume_nano
+      send_volume_nano,
+      median_latency_of_median_bucket_by_confirmed_blocks_24h
     }
   }
 )
 
-export default connect(mapStateToProps)(Network)
+const map_dispatch_to_props = {
+  get_blocks_confirmed_summary: nanodb_actions.get_blocks_confirmed_summary
+}
+
+export default connect(mapStateToProps, map_dispatch_to_props)(Network)