package query_test

import (
	"testing"

	"github.com/asdine/genji"
	"github.com/asdine/genji/database"
	"github.com/asdine/genji/engine/memoryengine"
	"github.com/stretchr/testify/require"
)

func TestCreateTable(t *testing.T) {
	tests := []struct {
		name  string
		query string
		fails bool
	}{
		{"Basic", `CREATE TABLE test`, false},
		{"Exists", "CREATE TABLE test;CREATE TABLE test", true},
		{"If not exists", "CREATE TABLE IF NOT EXISTS test", false},
		{"If not exists, twice", "CREATE TABLE IF NOT EXISTS test;CREATE TABLE IF NOT EXISTS test", false},
		{"With primary key", "CREATE TABLE test(foo STRING PRIMARY KEY)", false},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			db, err := genji.New(memoryengine.NewEngine())
			require.NoError(t, err)
			defer db.Close()

			err = db.Exec(test.query)
			if test.fails {
				require.Error(t, err)
				return
			}
			require.NoError(t, err)

			err = db.ViewTable("test", func(_ *genji.Tx, _ *database.Table) error {
				return nil
			})
			require.NoError(t, err)
		})
	}
}

func TestCreateIndex(t *testing.T) {
	tests := []struct {
		name  string
		query string
		fails bool
	}{
		{"Basic", "CREATE INDEX idx ON test (foo)", false},
		{"If not exists", "CREATE INDEX IF NOT EXISTS idx ON test (foo)", false},
		{"Unique", "CREATE UNIQUE INDEX IF NOT EXISTS idx ON test (foo)", false},
		{"No fields", "CREATE INDEX idx ON test", true},
		{"More than 1 field", "CREATE INDEX idx ON test (foo, bar)", true},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			db, err := genji.New(memoryengine.NewEngine())
			require.NoError(t, err)
			defer db.Close()

			err = db.Exec("CREATE TABLE test")
			require.NoError(t, err)

			err = db.Exec(test.query)
			if test.fails {
				require.Error(t, err)
				return
			}
			require.NoError(t, err)
		})
	}
}