//go:build !bindings

package main

import (
	"os"
	"path/filepath"
	"strings"
	"testing"

)

func TestResolveConfigPathDefaultIsHome(t *testing.T) {
	got, err := resolveConfigPath(nil)
	if err != nil {
		t.Fatal(err)
	}
	home, err := os.UserHomeDir()
	if err != nil {
		t.Fatal(err)
	}
	want := filepath.Join(home, ".funknetz.json")
	if got != want {
		t.Fatalf("resolveConfigPath(nil) = %q, want %q", got, want)
	}
}

func TestResolveConfigPathLongAndShort(t *testing.T) {
	dir := t.TempDir()
	abs := filepath.Join(dir, "lab.json")

	got, err := resolveConfigPath([]string{"--config", abs})
	if err != nil {
		t.Fatal(err)
	}
	if got != abs {
		t.Fatalf("--config = %q, want %q", got, abs)
	}

	got, err = resolveConfigPath([]string{"-c", abs})
	if err != nil {
		t.Fatal(err)
	}
	if got != abs {
		t.Fatalf("-c = %q, want %q", got, abs)
	}
}

func TestResolveConfigPathRelativeBecomesAbsolute(t *testing.T) {
	dir := t.TempDir()
	cwd, err := os.Getwd()
	if err != nil {
		t.Fatal(err)
	}
	t.Cleanup(func() { _ = os.Chdir(cwd) })
	if err := os.Chdir(dir); err != nil {
		t.Fatal(err)
	}

	got, err := resolveConfigPath([]string{"-c", "./funknetz.json"})
	if err != nil {
		t.Fatal(err)
	}
	want, err := filepath.EvalSymlinks(filepath.Join(dir, "funknetz.json"))
	if err != nil {
		// File need not exist; resolve the directory and join.
		base, err := filepath.EvalSymlinks(dir)
		if err != nil {
			t.Fatal(err)
		}
		want = filepath.Join(base, "funknetz.json")
	}
	gotEval, err := filepath.EvalSymlinks(filepath.Dir(got))
	if err != nil {
		t.Fatal(err)
	}
	got = filepath.Join(gotEval, filepath.Base(got))
	if got != want {
		t.Fatalf("relative -c = %q, want %q", got, want)
	}
}

func TestOpenStationUsesResolvedPath(t *testing.T) {
	dir := t.TempDir()
	path := filepath.Join(dir, "custom.json")

	_, err := openStation([]string{"-c", path})
	if err == nil {
		t.Fatal("openStation() error = nil, want rejection after creating the file")
	}
	if !strings.Contains(err.Error(), "created") {
		t.Fatalf("openStation() error = %q, want it to say the file was created", err.Error())
	}

	info, err := os.Stat(path)
	if err != nil {
		t.Fatal(err)
	}
	if got, want := info.Mode().Perm(), os.FileMode(0o600); got != want {
		t.Fatalf("mode = %o, want %o", got, want)
	}

	// Same rules as the home file: a second open with a filled config works.
	body := `{
  "host": "127.0.0.1",
  "port": 5300,
  "callsign": "DL0FN-1",
  "authKey": "local-lab-secret-change-me",
  "talkGroup": 9,
  "enableLogging": false,
  "logFile": "` + filepath.Join(dir, "funknetz.log") + `"
}
`
	if err := os.WriteFile(path, []byte(body), 0o600); err != nil {
		t.Fatal(err)
	}
	st, err := openStation([]string{"--config", path})
	if err != nil {
		t.Fatal(err)
	}
	if st.State().Callsign != "DL0FN-1" {
		t.Fatalf("callsign = %q, want DL0FN-1", st.State().Callsign)
	}
}