package models

import (
	"database/sql"

	_ "github.com/mattn/go-sqlite3"
)

type Datastore interface {
	AllDevices() ([]*Device, error)
	InsertDevice(*Device) error
}

type DB struct {
	*sql.DB
}

func NewDB(dataSourceName string) (*DB, error) {
	db, err := sql.Open("sqlite3", dataSourceName)
	if err != nil {
		return nil, err
	}
	if err = db.Ping(); err != nil {
		return nil, err
	}

	sqlStmt := `CREATE TABLE IF NOT EXISTS devices (topic TEXT not null primary key, 
		customerID TEXT,
		deviceID TEXT,
		projectName TEXT,
		mac TEXT, 
		sn TEXT, 
		lastMsg TIMESTAMP DEFAULT CURRENT_TIMESTAMP);`
	_, err = db.Exec(sqlStmt)
	if err != nil {
		return nil, err
	}

	return &DB{db}, nil
}