// Command server serves the player HTTP API and the web front end.
package main

import (
	"context"
	"flag"
	"log"
	"net/http"
	"os"

	"halcyon/api"
	"halcyon/config"
	"halcyon/store"
	"halcyon/web"
)

func main() {
	dsn := flag.String("db", config.DatabaseURL(), "sqlite:<path> or postgres:// URL (default: $DATABASE_URL)")
	addr := flag.String("addr", ":8080", "listen address")
	manual := flag.String("manual-pdf", envOr("MANUAL_PDF", "docs/generated/manual.pdf"), "rendered PDF manual to serve (default: $MANUAL_PDF)")
	cfg, err := config.Bind(flag.CommandLine)
	if err != nil {
		log.Fatal(err)
	}
	flag.Parse()
	if err := cfg.Validate(); err != nil {
		log.Fatal(err)
	}

	st, err := store.Open(*dsn)
	if err != nil {
		log.Fatal(err)
	}
	defer st.Close()
	if err := st.Migrate(context.Background()); err != nil {
		log.Fatal(err)
	}
	adminPassword := os.Getenv("HALCYON_ADMIN_PASSWORD")
	switch {
	case adminPassword == "":
		log.Print("admin interface is OFF: set HALCYON_ADMIN_PASSWORD to turn it on at /admin")
	case len(adminPassword) < 12:
		log.Print("admin interface is on at /admin, but its password is short: use at least 12 characters")
	default:
		log.Print("admin interface is on at /admin")
	}
	mux := api.New(st, *cfg, api.WithAdminPassword(adminPassword))
	mux.Handle("/", web.Handler(*manual)) // the site; API routes are more specific and win
	log.Printf("listening on %s", *addr)
	log.Fatal(http.ListenAndServe(*addr, mux))
}

func envOr(key, def string) string {
	if v := os.Getenv(key); v != "" {
		return v
	}
	return def
}