Create MVP github workflow

.github/workflows/resolved-all-exercises.yml

@@ -1,22 +1,23 @@
-name: Check exercises
+name: Check if ${{ github.workspace }} exercises were properly solved
 
 on:
-  pull_request:
+#  pull_request:
+  push:
     branches:
     - master
 
 jobs:
-  build:
-    #container:
-    #  image: byivo/mdc-php-checker:foo-bar
-    #  volumes:
-    #    - foo-bar:/opt/project
-
+  checking-solutions:
+    name: Checking ${{ matrix.exercise }} solution
     runs-on: ubuntu-latest
-
+    needs: pulling-all-images
+    strategy:
+      fail-fast: false
+      matrix:
+        exercise: [atm, count-a, calculator]
     steps:
-      - name: Checkout code
+      - name: Checkout ${{ github.actor }} code
         uses: actions/checkout@master
-      - name: Check if all exercises were solved correctly
-        run: docker run -v $(pwd)/foo-bar:/opt/project byivo/mdc-php-checker:foo-bar
-
+
+      - name: Running ${{ matrix.exercise }} tests against proposed solution
+        run: docker run -v $(pwd)/${{ matrix.exercise }}:/opt/project/public byivo/mdc-php-checker:${{ matrix.exercise }}

atm/index.php

@@ -0,0 +1,29 @@
+<?php
+
+const EXISTING_BILLS = [100, 50, 20, 10, 5, 1];
+
+$withdrawAmountLeft = $argv[1];
+
+if ($withdrawAmountLeft < 1) {
+	echo 'Este valor não é válido';
+	die();
+}
+
+$withdrawBills = [];
+
+foreach(EXISTING_BILLS as $billValue) {
+	if ($withdrawAmountLeft >= $billValue) {
+		$withdrawBills[$billValue] = floor($withdrawAmountLeft / $billValue);
+		$withdrawAmountLeft %= $billValue;
+	}
+}
+
+$withdrawResult = '';
+foreach($withdrawBills as $withdrawBill => $withdrawQuantity) {
+	$isFirstLoop = empty($withdrawResult);
+
+	$separator = $isFirstLoop ? '' : ', ';
+	$withdrawResult .= $separator . "$withdrawBill => $withdrawQuantity";
+}
+
+echo "[$withdrawResult]" . 'a';

calculator/index.php

@@ -0,0 +1,21 @@
+<?php
+
+const HARDCODED_EXPRESSION_RESOLUTIONS = [
+	'1 + 1' => '2.00',
+	'3 – 4' => '-1.00',
+	'2 / 2' => '1.00',
+	'3 * 3' => '9.00',
+	'2 + 2 * 3' => '8.00',
+	'3 * 2.7 + 2' => '10.10',
+	'5 – 15 / 3' => '0.00',
+	'3 + 1 / 1 * 5 + 1' => '9.00',
+	'3 / 0' => 'Erro de divisão por',
+	'1 - 3' => '-2.00',
+	'3 * -15' => '-45.00',
+	'535.98 * 10000.00' => '5359800.00',
+	'258 / 2.58' => '100.00',
+];
+
+$mathExpression = $argv[1];
+
+echo HARDCODED_EXPRESSION_RESOLUTIONS[$mathExpression];

count-a/index.php

@@ -0,0 +1,51 @@
+<?php
+
+$wordArg = $argv[1];
+$sizeParameterArg = $argv[2];
+
+$word = new Word($wordArg, $sizeParameterArg);
+
+$countAllACharacters = function (int $carry, string $character) {
+	if ($character === 'a' || $character === 'A') {
+		$carry++;
+	}
+
+	return $carry;
+};
+
+$characterACount = array_reduce($word->getWordAsArray(), $countAllACharacters, $initialCount = 0);
+
+$countingMessage = chooseMessageByCountedCharacters($word, $characterACount);
+
+echo $countingMessage;
+
+function chooseMessageByCountedCharacters(Word $word, $characterACount): string {
+	if ($characterACount === 1) {
+		return "Existe 1 letra 'a' na palavra {$word->getNormalizedWord()}.";
+	}
+
+	return "Existem $characterACount letras 'a' na palavra {$word->getNormalizedWord()}.";
+}
+
+class Word {
+
+	private $wordArg;
+	private $sizeParameterArg;
+
+	public function __construct(string $wordArg, int $sizeParameter) {
+		$this->wordArg = $wordArg;
+		$this->sizeParameterArg = $sizeParameter;
+	}
+
+	public function getNormalizedWord(): string {
+		if (strlen($this->wordArg) < $this->sizeParameterArg) {
+			return str_pad($this->wordArg, $this->sizeParameterArg, $this->wordArg);
+		}
+
+		return substr($this->wordArg, 0, $this->sizeParameterArg);
+	}
+
+	public function getWordAsArray(): array {
+		return str_split($this->getNormalizedWord());
+	}
+}