switch env vars to parameters

.gitignore

@@ -1 +1,2 @@
-test.db
+*.db
+emdb

service.go

@@ -1,26 +1,28 @@
 package main
 
 import (
+	"flag"
 	"fmt"
 	"log/slog"
 	"net/http"
 	"os"
 	"os/signal"
-	"strconv"
 	"syscall"
 
 	"ewintr.nl/emdb/app"
 )
 
+var (
+	port   = flag.Int("port", 8080, "port to listen on")
+	dbPath = flag.String("dbpath", "test.db", "path to sqlite db")
+	apiKey = flag.String("apikey", "hoi", "api key to use")
+)
+
 func main() {
+	flag.Parse()
+
 	logger := slog.New(slog.NewJSONHandler(os.Stdout, nil))
-	port, err := strconv.Atoi(getParam("API_PORT", "8080"))
-	if err != nil {
-		fmt.Printf("invalid port: %s", err.Error())
-		os.Exit(1)
-	}
-	apiKey := getParam("API_KEY", "hoi")
-	repo, err := app.NewSQLite(getParam("DB_PATH", "test.db"))
+	repo, err := app.NewSQLite(*dbPath)
 	if err != nil {
 		fmt.Printf("could not create new sqlite repo: %s", err.Error())
 		os.Exit(1)
@@ -30,16 +32,9 @@ func main() {
 		"movie": app.NewMovieAPI(repo, logger),
 	}
 
-	go http.ListenAndServe(fmt.Sprintf(":%d", port), app.NewServer(apiKey, apis, logger))
+	go http.ListenAndServe(fmt.Sprintf(":%d", *port), app.NewServer(*apiKey, apis, logger))
 
 	c := make(chan os.Signal, 1)
 	signal.Notify(c, syscall.SIGINT, syscall.SIGTERM)
 	<-c
 }
-
-func getParam(param, def string) string {
-	if val, ok := os.LookupEnv(param); ok {
-		return val
-	}
-	return def
-}