package statement_test

import (
	"testing"

	"github.com/genjidb/genji"
	"github.com/genjidb/genji/document"
	"github.com/genjidb/genji/internal/errors"
	"github.com/genjidb/genji/internal/testutil/assert"

	errs "github.com/genjidb/genji/errors"
	"github.com/stretchr/testify/require"
)

func TestAlterTable(t *testing.T) {
	db, err := genji.Open(":memory:")
	assert.NoError(t, err)
	defer db.Close()

	err = db.Exec("CREATE TABLE foo")
	assert.NoError(t, err)

	// Insert some data into foo
	err = db.Exec(`INSERT INTO foo VALUES {name: "John Doe", age: 99}`)
	assert.NoError(t, err)

	// Renaming the table to the same name should fail.
	err = db.Exec("ALTER TABLE foo RENAME TO foo")
	assert.ErrorIs(t, err, errs.AlreadyExistsError{Name: "foo"})

	err = db.Exec("ALTER TABLE foo RENAME TO bar")
	assert.NoError(t, err)

	// Selecting from the old name should fail.
	err = db.Exec("SELECT * FROM foo")
	if !errors.Is(err, errs.NotFoundError{}) {
		assert.ErrorIs(t, err, errs.NotFoundError{Name: "foo"})
	}

	d, err := db.QueryDocument("SELECT * FROM bar")
	assert.NoError(t, err)
	data, err := document.MarshalJSON(d)
	assert.NoError(t, err)
	require.JSONEq(t, `{"name": "John Doe", "age": 99}`, string(data))

	// Renaming a read-only table should fail
	err = db.Exec("ALTER TABLE __genji_catalog RENAME TO bar")
	assert.Error(t, err)
}