feat: wallet P&L with average cost basis tracking (#156) (#158)

web-app/src/composables/useWalletDashboard.ts

@@ -48,6 +48,8 @@ function formatTokenAmount(rawWei: string, decimals = 18): number {
 
 export function useWalletDashboard(address: Ref<string>) {
   const holderBalance = ref<string>('0');
+  const holderTotalEthSpent = ref<string>('0');
+  const holderTotalTokensAcquired = ref<string>('0');
   const stats = ref<WalletStats | null>(null);
   const positions = ref<WalletPosition[]>([]);
   const loading = ref(false);
@@ -78,6 +80,8 @@ export function useWalletDashboard(address: Ref<string>) {
             holders(address: "${addr}") {
               address
               balance
+              totalEthSpent
+              totalTokensAcquired
             }
             statss(where: { id: "0x01" }) {
               items {
@@ -122,6 +126,8 @@ export function useWalletDashboard(address: Ref<string>) {
 
       const holder = res.data?.data?.holders;
       holderBalance.value = holder?.balance ?? '0';
+      holderTotalEthSpent.value = holder?.totalEthSpent ?? '0';
+      holderTotalTokensAcquired.value = holder?.totalTokensAcquired ?? '0';
 
       const statsItems = res.data?.data?.statss?.items;
       stats.value = Array.isArray(statsItems) && statsItems.length > 0 ? (statsItems[0] as WalletStats) : null;
@@ -158,6 +164,31 @@ export function useWalletDashboard(address: Ref<string>) {
     return balance * floorPriceEth;
   });
 
+  // Cost basis & P&L
+  const avgCostBasis = computed(() => {
+    const spent = formatTokenAmount(holderTotalEthSpent.value);
+    const acquired = formatTokenAmount(holderTotalTokensAcquired.value);
+    if (acquired === 0) return 0;
+    return spent / acquired;
+  });
+
+  const currentPriceEth = computed(() => {
+    if (!stats.value?.currentPriceWei) return 0;
+    return formatTokenAmount(stats.value.currentPriceWei);
+  });
+
+  const unrealizedPnlEth = computed(() => {
+    const basis = avgCostBasis.value;
+    if (basis === 0) return 0;
+    return (currentPriceEth.value - basis) * balanceKrk.value;
+  });
+
+  const unrealizedPnlPercent = computed(() => {
+    const basis = avgCostBasis.value;
+    if (basis === 0) return 0;
+    return (currentPriceEth.value / basis - 1) * 100;
+  });
+
   const activePositions = computed(() => positions.value.filter(p => p.status === 'Active'));
   const closedPositions = computed(() => positions.value.filter(p => p.status === 'Closed'));
 
@@ -180,6 +211,10 @@ export function useWalletDashboard(address: Ref<string>) {
     balanceKrk,
     ethBacking,
     floorValue,
+    avgCostBasis,
+    currentPriceEth,
+    unrealizedPnlEth,
+    unrealizedPnlPercent,
     stats,
     positions,
     activePositions,