package postgres

import (
	"errors"

	"github.com/jmoiron/sqlx"
	_ "github.com/lib/pq"
	"github.com/vulcanize/vulcanizedb/pkg/config"
	"github.com/vulcanize/vulcanizedb/pkg/core"
)

type DB struct {
	*sqlx.DB
	node   core.Node
	nodeId int64
}

var (
	ErrDBInsertFailed     = errors.New("postgres: insert failed")
	ErrDBDeleteFailed     = errors.New("postgres: delete failed")
	ErrDBConnectionFailed = errors.New("postgres: db connection failed")
	ErrUnableToSetNode    = errors.New("postgres: unable to set node")
)

func NewDB(databaseConfig config.Database, node core.Node) (*DB, error) {
	connectString := config.DbConnectionString(databaseConfig)
	db, err := sqlx.Connect("postgres", connectString)
	if err != nil {
		return &DB{}, ErrDBConnectionFailed
	}
	pg := DB{DB: db, node: node}
	err = pg.CreateNode(&node)
	if err != nil {
		return &DB{}, ErrUnableToSetNode
	}
	return &pg, nil
}