//go:build integration

package inttest

import (
	"context"
	"errors"
	"testing"

	"github.com/google/uuid"

	"scrabble/backend/internal/account"
)

// TestRemoveEmailIdentity erases an account's email identity but refuses when the
// email is the account's only identity (which would leave it unreachable).
func TestRemoveEmailIdentity(t *testing.T) {
	ctx := context.Background()
	store := account.NewStore(testDB)

	// Email is the only identity → refuse.
	solo, err := store.ProvisionEmail(ctx, "solo-"+uuid.NewString()+"@example.com", "", "en")
	if err != nil {
		t.Fatalf("provision email: %v", err)
	}
	if err := store.RemoveEmailIdentity(ctx, solo.ID); !errors.Is(err, account.ErrLastIdentity) {
		t.Fatalf("remove last identity = %v, want ErrLastIdentity", err)
	}

	// Telegram + email → erase the email, keep Telegram.
	tg, err := store.ProvisionByIdentity(ctx, account.KindTelegram, "tg-"+uuid.NewString())
	if err != nil {
		t.Fatalf("provision telegram: %v", err)
	}
	if err := store.AttachIdentity(ctx, tg.ID, account.KindEmail, "dual-"+uuid.NewString()+"@example.com", true); err != nil {
		t.Fatalf("attach email: %v", err)
	}
	if err := store.RemoveEmailIdentity(ctx, tg.ID); err != nil {
		t.Fatalf("remove email: %v", err)
	}
	ids, err := store.Identities(ctx, tg.ID)
	if err != nil {
		t.Fatalf("identities: %v", err)
	}
	if len(ids) != 1 || ids[0].Kind != account.KindTelegram {
		t.Errorf("identities after erase = %+v, want only telegram", ids)
	}
}

// TestListUsersEmailExact matches accounts strictly (exactly) by their email identity.
func TestListUsersEmailExact(t *testing.T) {
	ctx := context.Background()
	store := account.NewStore(testDB)
	email := "find-" + uuid.NewString() + "@example.com"
	acc, err := store.ProvisionEmail(ctx, email, "", "en")
	if err != nil {
		t.Fatalf("provision: %v", err)
	}

	items, err := store.ListUsers(ctx, account.UserFilter{EmailExact: email}, 50, 0)
	if err != nil {
		t.Fatalf("list: %v", err)
	}
	found := false
	for _, it := range items {
		if it.ID == acc.ID {
			found = true
		}
	}
	if !found {
		t.Error("the exact email filter did not find the account")
	}

	other, err := store.ListUsers(ctx, account.UserFilter{EmailExact: "nope-" + uuid.NewString() + "@example.com"}, 50, 0)
	if err != nil {
		t.Fatalf("list (no match): %v", err)
	}
	for _, it := range other {
		if it.ID == acc.ID {
			t.Error("a non-matching email filter must not return the account")
		}
	}
}