// server.go is a small HTTP server used by the issue-2103 integration test.
// It serves different YAML content based on the "ref" query parameter.
package main

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

func main() {
	mux := http.NewServeMux()
	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		ref := r.URL.Query().Get("ref")
		if ref == "" {
			ref = "unknown"
		}
		w.Header().Set("Content-Type", "text/plain")
		_, _ = fmt.Fprintf(w, "version: %s\n", ref)
	})

	listener, err := net.Listen("tcp", "127.0.0.1:0")
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to listen: %v\n", err)
		os.Exit(1)
	}

	// Print the address so the test script can capture it.
	fmt.Printf("http://%s\n", listener.Addr().String())

	if err := http.Serve(listener, mux); err != nil {
		fmt.Fprintf(os.Stderr, "Server error: %v\n", err)
		os.Exit(1)
	}
}