package postgres

import (
	"context"
	"regexp"
	"testing"
	"time"

	"github.com/DATA-DOG/go-sqlmock"
	"github.com/gofrs/uuid/v5"
	"github.com/jmoiron/sqlx"
	"github.com/saveinmed/backend-go/internal/domain"
	"github.com/stretchr/testify/assert"
)

func newMockRepo(t *testing.T) (*Repository, sqlmock.Sqlmock) {
	db, mock, err := sqlmock.New()
	if err != nil {
		t.Fatalf("an error '%s' was not expected when opening a stub database connection", err)
	}
	sqlxDB := sqlx.NewDb(db, "sqlmock")
	repo := New(sqlxDB)
	return repo, mock
}

func TestCreateCompany(t *testing.T) {
	repo, mock := newMockRepo(t)
	defer repo.db.Close()

	company := &domain.Company{
		ID:            uuid.Must(uuid.NewV4()),
		CNPJ:          "12345678901234",
		CorporateName: "Test Pharmacy",
		Category:      "farmacia",
		LicenseNumber: "123",
		IsVerified:    false,
		Latitude:      -10.0,
		Longitude:     -20.0,
		City:          "Test City",
		State:         "TS",
		CreatedAt:     time.Now(),
		UpdatedAt:     time.Now(),
	}

	query := `INSERT INTO companies`
	mock.ExpectExec(regexp.QuoteMeta(query)).
		WithArgs(
			company.ID,
			company.CNPJ,
			company.CorporateName,
			company.Category,
			company.LicenseNumber,
			company.IsVerified,
			company.Latitude,
			company.Longitude,
			company.City,
			company.State,
			company.CreatedAt,
			company.UpdatedAt,
		).
		WillReturnResult(sqlmock.NewResult(1, 1))

	err := repo.CreateCompany(context.Background(), company)
	assert.NoError(t, err)

	if err := mock.ExpectationsMet(); err != nil {
		t.Errorf("there were unfulfilled expectations: %s", err)
	}
}

func TestGetCompany(t *testing.T) {
	repo, mock := newMockRepo(t)
	defer repo.db.Close()

	id := uuid.Must(uuid.NewV4())

	rows := sqlmock.NewRows([]string{"id", "cnpj", "corporate_name", "category", "license_number", "is_verified", "latitude", "longitude", "city", "state", "created_at", "updated_at"}).
		AddRow(id, "123", "Test", "farmacia", "123", false, 0.0, 0.0, "City", "ST", time.Now(), time.Now())

	query := `SELECT .* FROM companies WHERE id = \$1`
	mock.ExpectQuery(regexp.QuoteMeta(query)).
		WithArgs(id).
		WillReturnRows(rows)

	company, err := repo.GetCompany(context.Background(), id)
	assert.NoError(t, err)
	assert.NotNil(t, company)
	assert.Equal(t, id, company.ID)
}

func TestCreateProduct(t *testing.T) {
	repo, mock := newMockRepo(t)
	defer repo.db.Close()

	product := &domain.Product{
		ID:          uuid.Must(uuid.NewV4()),
		SellerID:    uuid.Must(uuid.NewV4()),
		Name:        "Test Product",
		Description: "Desc",
		Batch:       "B1",
		PriceCents:  1000,
		Stock:       10,
	}

	query := `INSERT INTO products`
	rows := sqlmock.NewRows([]string{"created_at", "updated_at"}).
		AddRow(time.Now(), time.Now())
	mock.ExpectQuery(regexp.QuoteMeta(query)).
		WithArgs(
			product.ID,
			product.SellerID,
			product.Name,
			product.Description,
			product.Batch,
			product.ExpiresAt,
			product.PriceCents,
			product.Stock,
		).
		WillReturnRows(rows)

	err := repo.CreateProduct(context.Background(), product)
	assert.NoError(t, err)
}

func TestListProducts(t *testing.T) {
	repo, mock := newMockRepo(t)
	defer repo.db.Close()

	query := `SELECT .* FROM products`
	rows := sqlmock.NewRows([]string{"id", "name"}).AddRow(uuid.Must(uuid.NewV4()), "P1")

	// We expect two queries: count and select list
	mock.ExpectQuery(`SELECT count\(\*\) FROM products`).WillReturnRows(sqlmock.NewRows([]string{"count"}).AddRow(1))
	mock.ExpectQuery(regexp.QuoteMeta(query)).WillReturnRows(rows)

	list, count, err := repo.ListProducts(context.Background(), domain.ProductFilter{Limit: 10})
	assert.NoError(t, err)
	assert.Equal(t, int64(1), count)
	assert.Len(t, list, 1)
}