feat: 前端分離+功能api化

1. 新增資產管理CRUD、googleOAuth登入 2. 更改原記帳controller
2026-07-16 08:20:00 +00:00 · 2026-06-25 14:19:07 +08:00
parent 7bb931c97b
commit 85972f950c
70 changed files with 4754 additions and 1520 deletions
--- a/app/Http/Controllers/Api/InvestmentTransactionController.php
+++ b/app/Http/Controllers/Api/InvestmentTransactionController.php
@@ -0,0 +1,98 @@
+<?php
+
+namespace App\Http\Controllers\Api;
+
+use App\Http\Controllers\Controller;
+use App\Models\InvestmentHolding;
+use Illuminate\Http\Request;
+
+class InvestmentTransactionController extends Controller
+{
+    public function index(Request $request, string $holdingId)
+    {
+        $holding = InvestmentHolding::whereHas('account', function ($q) use ($request) {
+            $q->where('user_id', $request->user()->id);
+        })->findOrFail($holdingId);
+
+        return response()->json($holding->transactions()->orderBy('traded_at', 'desc')->get());
+    }
+
+    public function store(Request $request, string $holdingId)
+    {
+        $holding = InvestmentHolding::whereHas('account', function ($q) use ($request) {
+            $q->where('user_id', $request->user()->id);
+        })->findOrFail($holdingId);
+
+        $validated = $request->validate([
+            'action' => 'required|in:buy,sell',
+            'shares' => 'nullable|numeric|min:0',
+            'price' => 'nullable|numeric|min:0',
+            'fee' => 'nullable|numeric|min:0',
+            'tax' => 'nullable|numeric|min:0',
+            'traded_at' => 'required|date',
+            'note' => 'nullable|string',
+            'amount' => 'nullable|numeric|min:0', // 實際投入金額（基金用）
+            'nav' => 'nullable|numeric|min:0',    // 淨值（基金用）
+        ]);
+
+        $transaction = $holding->transactions()->create($validated);
+
+        // 更新持倉的 shares 和 avg_cost
+        $this->recalculateHolding($holding);
+
+        return response()->json($transaction, 201);
+    }
+
+    public function destroy(Request $request, string $holdingId, string $id)
+    {
+        $holding = InvestmentHolding::whereHas('account', function ($q) use ($request) {
+            $q->where('user_id', $request->user()->id);
+        })->findOrFail($holdingId);
+
+        $transaction = $holding->transactions()->findOrFail($id);
+        $transaction->delete();
+
+        $this->recalculateHolding($holding);
+
+        return response()->json(null, 204);
+    }
+
+    // 每次買賣後重新計算平均成本和持有股數
+    private function recalculateHolding(InvestmentHolding $holding): void
+    {
+        $transactions = $holding->transactions()->orderBy('traded_at')->get();
+
+        $totalUnits = 0;
+        $totalCost = 0;
+        $presentUnits = 0;
+
+
+        foreach ($transactions as $tx) {
+            if ($tx->action === 'buy') {
+                if ($holding->type === 'fund') {
+                    $units = $tx->nav > 0 ? $tx->amount / $tx->nav : 0;
+                    $totalCost += $tx->amount + $tx->fee;
+                    $presentUnits += $units;
+                    $totalUnits += $units;
+                } else {
+                    $totalCost += $tx->shares * $tx->price + $tx->fee;
+                    $presentUnits += $tx->shares;
+                    $totalUnits += $tx->shares;
+                }
+            }  else {
+                if ($holding->type === 'fund') {
+                    $units = $tx->nav > 0 ? $tx->amount / $tx->nav : 0;
+                    $totalUnits -= $units;
+                } else {
+                    $totalUnits -= $tx->shares;
+                }
+            }
+            
+        }
+        
+        $holding->update([
+            'shares'   => max(0, $totalUnits), // 總持有股數
+            'avg_cost' => $presentUnits > 0 ? $totalCost / $presentUnits : 0,
+        ]);
+    }
+}