fix coin stats and add transaction note (#31)

hooks/useCoins.tsx

@@ -1,26 +1,25 @@
 import { useAtom } from 'jotai'
-import { 
-  coinsAtom, 
-  settingsAtom,
+import {
+  coinsAtom,
   coinsEarnedTodayAtom,
   totalEarnedAtom,
   totalSpentAtom,
   coinsSpentTodayAtom,
   transactionsTodayAtom
 } from '@/lib/atoms'
-import { addCoins, removeCoins } from '@/app/actions/data'
+import { addCoins, removeCoins, saveCoinsData } from '@/app/actions/data'
+import { CoinsData } from '@/lib/types'
 import { toast } from '@/hooks/use-toast'
 
 export function useCoins() {
   const [coins, setCoins] = useAtom(coinsAtom)
-  const [settings] = useAtom(settingsAtom)
   const [coinsEarnedToday] = useAtom(coinsEarnedTodayAtom)
   const [totalEarned] = useAtom(totalEarnedAtom)
   const [totalSpent] = useAtom(totalSpentAtom)
   const [coinsSpentToday] = useAtom(coinsSpentTodayAtom)
   const [transactionsToday] = useAtom(transactionsTodayAtom)
 
-  const add = async (amount: number, description: string) => {
+  const add = async (amount: number, description: string, note?: string) => {
     if (isNaN(amount) || amount <= 0) {
       toast({
         title: "Invalid amount",
@@ -29,13 +28,13 @@ export function useCoins() {
       return null
     }
 
-    const data = await addCoins(amount, description)
+    const data = await addCoins(amount, description, 'MANUAL_ADJUSTMENT', undefined, note)
     setCoins(data)
     toast({ title: "Success", description: `Added ${amount} coins` })
     return data
   }
 
-  const remove = async (amount: number, description: string) => {
+  const remove = async (amount: number, description: string, note?: string) => {
     const numAmount = Math.abs(amount)
     if (isNaN(numAmount) || numAmount <= 0) {
       toast({
@@ -45,15 +44,45 @@ export function useCoins() {
       return null
     }
 
-    const data = await removeCoins(numAmount, description)
+    const data = await removeCoins(numAmount, description, 'MANUAL_ADJUSTMENT', undefined, note)
     setCoins(data)
     toast({ title: "Success", description: `Removed ${numAmount} coins` })
     return data
   }
 
+  const updateNote = async (transactionId: string, note: string) => {
+    const transaction = coins.transactions.find(t => t.id === transactionId)
+    if (!transaction) {
+      toast({
+        title: "Error",
+        description: "Transaction not found"
+      })
+      return null
+    }
+
+    const updatedTransaction = {
+      ...transaction,
+      note: note.trim() || undefined
+    }
+
+    const updatedTransactions = coins.transactions.map(t =>
+      t.id === transactionId ? updatedTransaction : t
+    )
+
+    const newData: CoinsData = {
+      ...coins,
+      transactions: updatedTransactions
+    }
+
+    await saveCoinsData(newData)
+    setCoins(newData)
+    return newData
+  }
+
   return {
     add,
     remove,
+    updateNote,
     balance: coins.balance,
     transactions: coins.transactions,
     coinsEarnedToday,