feat: add GitHub event handling and pull request title display

main.go

@@ -1,16 +1,39 @@
 package main
 
 import (
+	"encoding/json"
 	"fmt"
 	"os"
 )
 
-func main() {
-	// Get all environment variables
-	environ := os.Environ()
-
-	// Print each environment variable
-	for _, env := range environ {
-		fmt.Println(env)
-	}
+type GithubEvent struct {
+	PullRequest struct {
+		Title string `json:"title"`
+	} `json:"pull_request"`
+}
+
+func main() {
+	eventPath := os.Getenv("GITHUB_EVENT_PATH")
+	if eventPath == "" {
+		fmt.Println("GITHUB_EVENT_PATH not set")
+		os.Exit(1)
+	}
+
+	eventFile, err := os.Open(eventPath)
+	if err != nil {
+		fmt.Printf("Error opening %s: %v\n", eventPath, err)
+		os.Exit(1)
+	}
+	defer eventFile.Close()
+
+	var event GithubEvent
+	decoder := json.NewDecoder(eventFile)
+	err = decoder.Decode(&event)
+	if err != nil {
+		fmt.Printf("Error decoding event.json: %v\n", err)
+		os.Exit(1)
+	}
+
+	prTitle := event.PullRequest.Title
+	fmt.Println("Pull Request Title:", prTitle)
 }