package main

import (
	"fmt"
	"log"
	"net/http"
	"os"
)

func main() {
	// Read from the environment, not baked in at build time — the Helm
	// chart's deployment.env sets APP_VERSION from the same image tag
	// updateHelmTag.groovy just bumped, so curling /version proves the
	// whole CI/CD loop (build -> push -> tag-bump -> deploy) actually
	// worked end to end, not just that "some" image is running.
	version := os.Getenv("APP_VERSION")
	if version == "" {
		version = "dev"
	}
	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		fmt.Fprintf(w, "hello from demo-go-app, version %s\n", version)
	})
	http.HandleFunc("/health", func(w http.ResponseWriter, r *http.Request) {
		w.WriteHeader(http.StatusOK)
		fmt.Fprintln(w, "ok")
	})
	http.HandleFunc("/version", func(w http.ResponseWriter, r *http.Request) {
		fmt.Fprintln(w, version)
	})

	port := os.Getenv("PORT")
	if port == "" {
		port = "8080"
	}
	log.Printf("listening on :%s (version %s)", port, version)
	log.Fatal(http.ListenAndServe(":"+port, nil))
}
// webhook test: 2026-09-02T19:55:14Z