package config

import (
	"os"
	"path/filepath"
	"reflect"
	"testing"
)

func writeFile(t *testing.T, path, content string) {
	t.Helper()
	if err := os.WriteFile(path, []byte(content), 0o644); err != nil {
		t.Fatalf("write %s: %v", path, err)
	}
}

func TestLoad_PhrasesFileMergesWithInline(t *testing.T) {
	dir := t.TempDir()

	writeFile(t, filepath.Join(dir, "phrases.yaml"), "phrases:\n  - しょうもな\n  - たまげたなあ\n")
	writeFile(t, filepath.Join(dir, "config.yaml"), `
listen_addr: ":8080"
webhook_secret: "s"
forgejo:
  base_url: "http://forgejo:3000"
  token: "t"
phrases_file: "./phrases.yaml"
phrases:
  - 独自の追加語録
`)

	cfg, err := Load(filepath.Join(dir, "config.yaml"))
	if err != nil {
		t.Fatalf("Load() error = %v", err)
	}

	want := []string{"しょうもな", "たまげたなあ", "独自の追加語録"}
	if !reflect.DeepEqual(cfg.Phrases, want) {
		t.Fatalf("Phrases = %v, want %v", cfg.Phrases, want)
	}
}

func TestLoad_MissingPhrasesIsError(t *testing.T) {
	dir := t.TempDir()
	writeFile(t, filepath.Join(dir, "config.yaml"), `
webhook_secret: "s"
forgejo:
  base_url: "http://forgejo:3000"
  token: "t"
`)

	if _, err := Load(filepath.Join(dir, "config.yaml")); err == nil {
		t.Fatal("Load() error = nil, want error for empty phrases")
	}
}