package identity

import (
	"context"
	"errors"
	"github.com/jackc/pgx/v5/pgxpool"
	"os"
	"strings"
	"testing"
)

func TestValidateDisplayName(t *testing.T) {
	for _, name := range []string{"", "   ", "名字\n另一行", strings.Repeat("名", 81), string([]byte{0xff})} {
		if _, err := ValidateDisplayName(name); !errors.Is(err, ErrInvalidDisplayName) {
			t.Errorf("accepted invalid nickname %q", name)
		}
	}
	if name, err := ValidateDisplayName(" 家庭成员 "); err != nil || name != "家庭成员" {
		t.Fatalf("normalization %q %v", name, err)
	}
}

func TestDisplayNameOnlyChangesAuthenticatedIdentity(t *testing.T) {
	url := os.Getenv("TEST_DATABASE_URL")
	if url == "" {
		t.Skip("TEST_DATABASE_URL is not set")
	}
	ctx := context.Background()
	pool, err := pgxpool.New(ctx, url)
	if err != nil {
		t.Fatal(err)
	}
	defer pool.Close()
	repo := NewRepository(pool)
	owner := Principal{Issuer: localIssuer, Subject: ownerSubject}
	outsider := Principal{Issuer: localIssuer, Subject: outsiderSubject}
	before, err := repo.CurrentUser(ctx, owner)
	if err != nil {
		t.Fatal(err)
	}
	other, err := repo.CurrentUser(ctx, outsider)
	if err != nil {
		t.Fatal(err)
	}
	defer repo.UpdateDisplayName(ctx, owner, before.Accounts[0].DisplayName)
	if err := repo.UpdateDisplayName(ctx, owner, "测试家人"); err != nil {
		t.Fatal(err)
	}
	after, err := repo.CurrentUser(ctx, owner)
	if err != nil || after.Accounts[0].DisplayName != "测试家人" {
		t.Fatalf("nickname not saved: %v", err)
	}
	unchanged, err := repo.CurrentUser(ctx, outsider)
	if err != nil || unchanged.Accounts[0].DisplayName != other.Accounts[0].DisplayName {
		t.Fatal("another identity was modified")
	}
	if err := repo.UpdateDisplayName(ctx, Principal{}, "其他"); !errors.Is(err, ErrAccessDenied) {
		t.Fatalf("empty principal accepted: %v", err)
	}
}