From 23a5f0a96f84927daee9abe5bf31c6a3e613924e Mon Sep 17 00:00:00 2001
From: MaysWind <i@mayswind.net>
Date: Sat, 7 Mar 2026 01:04:47 +0800
Subject: [PATCH] display total transactions, total amount, average amount,
 median amount, minimum amount, and maximum amount in the Data Table tab of
 Insights Explorer page

---
 src/stores/explorer.ts                        | 57 +++++++++++++++++++
 src/styles/desktop/global.scss                | 10 ++++
 .../insights/tabs/ExplorerDataTableTab.vue    | 49 +++++++++++++++-
 3 files changed, 114 insertions(+), 2 deletions(-)

diff --git a/src/stores/explorer.ts b/src/stores/explorer.ts
index dd5d729b..35eb07e0 100644
--- a/src/stores/explorer.ts
+++ b/src/stores/explorer.ts
@@ -111,6 +111,15 @@ export interface CategoriedTransactionExplorerDataItem extends SeriesInfo {
     value: number;
 }
 
+export interface InsightsExplorerTransactionStatisticData {
+    totalCount: number;
+    totalAmount: number;
+    averageAmount: number;
+    medianAmount: number;
+    minimumAmount: number;
+    maximumAmount: number;
+}
+
 export const useExplorersStore = defineStore('explorers', () => {
     const settingsStore = useSettingsStore();
     const userStore = useUserStore();
@@ -578,6 +587,53 @@ export const useExplorersStore = defineStore('explorers', () => {
         return result;
     });
 
+    const filteredTransactionsInDataTableStatistic = computed<InsightsExplorerTransactionStatisticData>(() => {
+        const statisticData: InsightsExplorerTransactionStatisticData = {
+            totalCount: 0,
+            totalAmount: 0,
+            averageAmount: 0,
+            medianAmount: 0,
+            minimumAmount: Number.MAX_SAFE_INTEGER,
+            maximumAmount: Number.MIN_SAFE_INTEGER
+        };
+
+        const sourceAmounts: number[] = [];
+
+        for (const transaction of filteredTransactionsInDataTable.value) {
+            statisticData.totalCount++;
+            statisticData.totalAmount += transaction.sourceAmount;
+
+            if (transaction.sourceAmount >= 0 && transaction.sourceAmount < statisticData.minimumAmount) {
+                statisticData.minimumAmount = transaction.sourceAmount;
+            }
+
+            if (transaction.sourceAmount > statisticData.maximumAmount) {
+                statisticData.maximumAmount = transaction.sourceAmount;
+            }
+
+            sourceAmounts.push(transaction.sourceAmount);
+        }
+
+        if (statisticData.totalCount > 0) {
+            statisticData.averageAmount = Math.trunc(statisticData.totalAmount / statisticData.totalCount);
+        }
+
+        if (sourceAmounts.length > 0) {
+            sourceAmounts.sort((a, b) => a - b);
+            statisticData.medianAmount = sourceAmounts[Math.floor(sourceAmounts.length / 2)] as number;
+        }
+
+        if (statisticData.minimumAmount === Number.MAX_SAFE_INTEGER) {
+            statisticData.minimumAmount = 0;
+        }
+
+        if (statisticData.maximumAmount === Number.MIN_SAFE_INTEGER) {
+            statisticData.maximumAmount = 0;
+        }
+
+        return statisticData;
+    });
+
     const categoriedTransactions = computed<Record<string, CategoriedTransactions>>(() => {
         if (!allTransactions.value || allTransactions.value.length < 1) {
             return {};
@@ -1174,6 +1230,7 @@ export const useExplorersStore = defineStore('explorers', () => {
         insightsExplorerListStateInvalid,
         // computed
         filteredTransactionsInDataTable,
+        filteredTransactionsInDataTableStatistic,
         categoriedTransactionExplorerData,
         // functions
         updateTransactionExplorerInvalidState,
diff --git a/src/styles/desktop/global.scss b/src/styles/desktop/global.scss
index b5704e34..d80be5fc 100644
--- a/src/styles/desktop/global.scss
+++ b/src/styles/desktop/global.scss
@@ -407,6 +407,16 @@ html[dir="rtl"] .v-img.img-with-direction > img {
     }
 }
 
+.table-tooltip {
+    &.v-tooltip > .v-overlay__content {
+        background-color: initial;
+
+        .v-table {
+            box-shadow: 0 6px 16px 0 rgba(var(--v-shadow-key-umbra-color), var(--v-shadow-lg-opacity)), 0 0 transparent, 0 0 transparent;
+        }
+    }
+}
+
 .v-snackbar {
     .v-snackbar__content {
         color: rgb(var(--v-tooltip-color));
diff --git a/src/views/desktop/insights/tabs/ExplorerDataTableTab.vue b/src/views/desktop/insights/tabs/ExplorerDataTableTab.vue
index ce2ca0cd..53ea7b0a 100644
--- a/src/views/desktop/insights/tabs/ExplorerDataTableTab.vue
+++ b/src/views/desktop/insights/tabs/ExplorerDataTableTab.vue
@@ -25,6 +25,49 @@
                         :items="allPageCounts"
                         v-model="currentExplorer.countPerPage"
                     />
+                    <v-spacer/>
+                    <div class="d-flex align-center">
+                        <span class="text-subtitle-1">{{ tt('Total Transactions') }}</span>
+                        <span v-if="loading">
+                            <v-skeleton-loader class="skeleton-no-margin ms-2" type="text" style="width: 50px" :loading="true"></v-skeleton-loader>
+                        </span>
+                        <span class="text-subtitle-1 ms-2" v-else-if="!loading">
+                            {{ formatNumberToLocalizedNumerals(filteredTransactions.length) }}
+                        </span>
+                        <span class="text-subtitle-1 ms-3" v-if="loading || filteredTransactionsStatistic">{{ tt('Total Amount') }}</span>
+                        <span v-if="loading">
+                            <v-skeleton-loader class="skeleton-no-margin ms-2" type="text" style="width: 80px" :loading="true"></v-skeleton-loader>
+                        </span>
+                        <span class="text-subtitle-1 ms-2" v-else-if="!loading && filteredTransactionsStatistic">
+                            {{ formatAmountToLocalizedNumeralsWithCurrency(filteredTransactionsStatistic.totalAmount) }}
+                        </span>
+                        <v-tooltip interactive class="table-tooltip" activator="parent" v-if="!loading && filteredTransactionsStatistic">
+                            <v-table density="compact">
+                                <tbody>
+                                <tr>
+                                    <td>{{ tt('Total Amount') }}</td>
+                                    <td class="text-end">{{ formatAmountToLocalizedNumeralsWithCurrency(filteredTransactionsStatistic.totalAmount) }}</td>
+                                </tr>
+                                <tr>
+                                    <td>{{ tt('Average Amount') }}</td>
+                                    <td class="text-end">{{ formatAmountToLocalizedNumeralsWithCurrency(filteredTransactionsStatistic.averageAmount) }}</td>
+                                </tr>
+                                <tr>
+                                    <td>{{ tt('Median Amount') }}</td>
+                                    <td class="text-end">{{ formatAmountToLocalizedNumeralsWithCurrency(filteredTransactionsStatistic.medianAmount) }}</td>
+                                </tr>
+                                <tr>
+                                    <td>{{ tt('Minimum Amount') }}</td>
+                                    <td class="text-end">{{ formatAmountToLocalizedNumeralsWithCurrency(filteredTransactionsStatistic.minimumAmount) }}</td>
+                                </tr>
+                                <tr>
+                                    <td>{{ tt('Maximum Amount') }}</td>
+                                    <td class="text-end">{{ formatAmountToLocalizedNumeralsWithCurrency(filteredTransactionsStatistic.maximumAmount) }}</td>
+                                </tr>
+                                </tbody>
+                            </v-table>
+                        </v-tooltip>
+                    </div>
                 </div>
             </v-col>
         </v-row>
@@ -126,7 +169,7 @@ import { useI18n } from '@/locales/helpers.ts';
 
 import { useSettingsStore } from '@/stores/setting.ts';
 import { useUserStore } from '@/stores/user.ts';
-import { useExplorersStore } from '@/stores/explorer.ts';
+import { type InsightsExplorerTransactionStatisticData, useExplorersStore } from '@/stores/explorer.ts';
 
 import { type NameValue, type NameNumeralValue, itemAndIndex } from '@/core/base.ts';
 import type { NumeralSystem } from '@/core/numeral.ts';
@@ -166,7 +209,8 @@ const {
     formatDateTimeToLongDateTime,
     formatDateTimeToGregorianDefaultDateTime,
     formatAmountToWesternArabicNumeralsWithoutDigitGrouping,
-    formatAmountToLocalizedNumeralsWithCurrency
+    formatAmountToLocalizedNumeralsWithCurrency,
+    formatNumberToLocalizedNumerals
 } = useI18n();
 
 const settingsStore = useSettingsStore();
@@ -181,6 +225,7 @@ const defaultCurrency = computed<string>(() => userStore.currentUserDefaultCurre
 const currentExplorer = computed<InsightsExplorer>(() => explorersStore.currentInsightsExplorer);
 
 const filteredTransactions = computed<TransactionInsightDataItem[]>(() => explorersStore.filteredTransactionsInDataTable);
+const filteredTransactionsStatistic = computed<InsightsExplorerTransactionStatisticData | undefined>(() => explorersStore.filteredTransactionsInDataTableStatistic);
 
 const allDataTableQuerySources = computed<NameValue[]>(() => {
     const sources: NameValue[] = [];