feat: add P1 solution

cmd/aoc/main.go

@@ -32,7 +32,10 @@ import (
 	_ "advent-of-code/internal/2021/DayOne"
 	_ "advent-of-code/internal/2021/DayThree"
 	_ "advent-of-code/internal/2021/DayTwo"
+
+	// 2022
 	_ "advent-of-code/internal/2022/DayOne"
+	_ "advent-of-code/internal/2022/DayTwo"
 
 	// 2025
 	_ "advent-of-code/internal/2025/DayOne"

internal/2022/DayTwo/code.go

@@ -0,0 +1,42 @@
+package daytwo
+
+import (
+	"advent-of-code/internal/registry"
+	"os"
+	"strings"
+)
+
+func init() {
+	registry.Register("2022D2", ParseInput, PartOne, PartTwo)
+}
+
+func ParseInput(filepath string) []string {
+	content, _ := os.ReadFile(filepath)
+	return strings.Split(strings.Trim(string(content), "\n"), "\n")
+}
+
+func PartOne(data []string) int {
+	totalScore := 0
+	for _, line := range data {
+		opponent := line[0]
+		me := line[2]
+
+		shapeScore := int(me - 'X' + 1)
+
+		var outcomeScore int
+		if (opponent == 'A' && me == 'Y') || (opponent == 'B' && me == 'Z') || (opponent == 'C' && me == 'X') {
+			outcomeScore = 6
+		} else if (opponent == 'A' && me == 'X') || (opponent == 'B' && me == 'Y') || (opponent == 'C' && me == 'Z') {
+			outcomeScore = 3
+		} else {
+			outcomeScore = 0
+		}
+
+		totalScore += shapeScore + outcomeScore
+	}
+	return totalScore
+}
+
+func PartTwo(data []string) int {
+	return 0
+}

internal/2022/DayTwo/code_test.go

@@ -0,0 +1,17 @@
+package daytwo
+
+import "testing"
+
+var testInput = []string{
+	"A Y",
+	"B X",
+	"C Z",
+}
+
+func TestPartOne(t *testing.T) {
+	expected := 15
+	got := PartOne(testInput)
+	if got != expected {
+		t.Errorf("PartOne() = %d, want %d", got, expected)
+	}
+}