From e3433aa95b5ce5e326a479b9e44e709613758e9f Mon Sep 17 00:00:00 2001
From: James Cole <thegrumpydictator@gmail.com>
Date: Sat, 26 Jan 2019 12:10:35 +0100
Subject: [PATCH] Add pie chart for available budget API

---
 .../Chart/AvailableBudgetController.php       | 97 +++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 app/Api/V1/Controllers/Chart/AvailableBudgetController.php

diff --git a/app/Api/V1/Controllers/Chart/AvailableBudgetController.php b/app/Api/V1/Controllers/Chart/AvailableBudgetController.php
new file mode 100644
index 0000000000..3391f17eb2
--- /dev/null
+++ b/app/Api/V1/Controllers/Chart/AvailableBudgetController.php
@@ -0,0 +1,97 @@
+<?php
+declare(strict_types=1);
+
+namespace FireflyIII\Api\V1\Controllers\Chart;
+
+
+use FireflyIII\Api\V1\Controllers\Controller;
+use FireflyIII\Models\AvailableBudget;
+use FireflyIII\Repositories\Budget\BudgetRepositoryInterface;
+use FireflyIII\User;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+use Illuminate\Support\Collection;
+
+/**
+ * Class AvailableBudgetController
+ */
+class AvailableBudgetController extends Controller
+{
+    /** @var BudgetRepositoryInterface */
+    private $repository;
+
+    /**
+     * AvailableBudgetController constructor.
+     */
+    public function __construct()
+    {
+        parent::__construct();
+        $this->middleware(
+            function ($request, $next) {
+                /** @var User $user */
+                $user             = auth()->user();
+                $this->repository = app(BudgetRepositoryInterface::class);
+                $this->repository->setUser($user);
+
+                return $next($request);
+            }
+        );
+    }
+
+    /**
+     * @param Request         $request
+     *
+     * @param AvailableBudget $availableBudget
+     *
+     * @return JsonResponse
+     */
+    public function overview(Request $request, AvailableBudget $availableBudget): JsonResponse
+    {
+        $currency          = $availableBudget->transactionCurrency;
+        $budgets           = $this->repository->getActiveBudgets();
+        $budgetInformation = $this->repository->spentInPeriodMc($budgets, new Collection, $availableBudget->start_date, $availableBudget->end_date);
+        $spent             = 0.0;
+
+        // get for current currency
+        foreach ($budgetInformation as $spentInfo) {
+            if ($spentInfo['currency_id'] === $availableBudget->transaction_currency_id) {
+                $spent = $spentInfo['amount'];
+            }
+        }
+        $left = bcadd($availableBudget->amount, (string)$spent);
+        // left less than zero? Set to zero.
+        if (bccomp($left, '0') === -1) {
+            $left = '0';
+        }
+
+        $chartData = [
+            [
+                'label'                   => trans('firefly.spent'),
+                'currency_id'             => $currency->id,
+                'currency_code'           => $currency->code,
+                'currency_symbol'         => $currency->symbol,
+                'currency_decimal_places' => $currency->decimal_places,
+                'type'                    => 'pie',
+                'yAxisID'                 => 0, // 0, 1, 2
+                'fill'                    => null, // true, false, null
+                'backgroundColor'         => null, // null or hex
+                'entries'                 => [$spent * -1],
+            ],
+            [
+                'label'                   => trans('firefly.left'),
+                'currency_id'             => $currency->id,
+                'currency_code'           => $currency->code,
+                'currency_symbol'         => $currency->symbol,
+                'currency_decimal_places' => $currency->decimal_places,
+                'type'                    => 'line', // line, area or bar
+                'yAxisID'                 => 0, // 0, 1, 2
+                'fill'                    => null, // true, false, null
+                'backgroundColor'         => null, // null or hex
+                'entries'                 => [round($left, $currency->decimal_places)],
+            ],
+        ];
+
+        return response()->json($chartData);
+    }
+
+}
\ No newline at end of file