package config

import (
	"path/filepath"
	"testing"
)

func TestUpsertAddsNewMapping(t *testing.T) {
	cfg := &Config{}
	m := Mapping{Name: "a", HouseholdID: "h1", TonieID: "t1", Folder: "/tmp/a"}
	cfg.Upsert(m)
	got := cfg.Get("a")
	if got == nil || got.TonieID != "t1" {
		t.Fatalf("expected mapping to be added, got %+v", got)
	}
}

func TestUpsertReplacesExistingMapping(t *testing.T) {
	cfg := &Config{}
	cfg.Upsert(Mapping{Name: "a", HouseholdID: "h1", TonieID: "t1", Folder: "/tmp/a"})
	cfg.Upsert(Mapping{Name: "a", HouseholdID: "h1", TonieID: "t2", Folder: "/tmp/a2"})

	if len(cfg.Mappings) != 1 {
		t.Fatalf("expected 1 mapping, got %d", len(cfg.Mappings))
	}
	if cfg.Get("a").TonieID != "t2" {
		t.Fatalf("expected updated tonie id t2, got %s", cfg.Get("a").TonieID)
	}
}

func TestRemoveReturnsFalseWhenMissing(t *testing.T) {
	cfg := &Config{}
	if cfg.Remove("nope") {
		t.Fatal("expected Remove to return false for missing mapping")
	}
}

func TestSaveAndLoadRoundtrip(t *testing.T) {
	dir := t.TempDir()
	path := filepath.Join(dir, "config.yaml")

	cfg := &Config{}
	cfg.Upsert(Mapping{
		Name:        "peppa",
		HouseholdID: "h1",
		TonieID:     "t1",
		Folder:      "/tmp/peppa",
		PlaylistRef: "https://example.com/playlist/1",
		Prune:       true,
	})

	if err := Save(cfg, path); err != nil {
		t.Fatalf("Save failed: %v", err)
	}

	loaded, err := Load(path)
	if err != nil {
		t.Fatalf("Load failed: %v", err)
	}
	m := loaded.Get("peppa")
	if m == nil || m.TonieID != "t1" || m.PlaylistRef != "https://example.com/playlist/1" {
		t.Fatalf("unexpected loaded mapping: %+v", m)
	}
}

func TestLoadMissingFileReturnsEmptyConfig(t *testing.T) {
	cfg, err := Load(filepath.Join(t.TempDir(), "does-not-exist.yaml"))
	if err != nil {
		t.Fatalf("Load failed: %v", err)
	}
	if len(cfg.Mappings) != 0 {
		t.Fatalf("expected empty mappings, got %+v", cfg.Mappings)
	}
}