package db

import (
	"errors"
	"strings"
	"th7/data/config"
	"th7/ports"
	"time"
)

const (
	DB_LOGGER_DEFAULT_DUR = 300
)

func NewAdapter(corePort ports.CorePort, cfg config.Config) (ports.DBPort, error) {

	var duration time.Duration
	var adapter ports.DBPort
	var err error

	// if `freq' is not present in the DB map, use default of 5 minutes (300 sec)
	if _, ok := cfg.DB["freq"]; !ok {
		duration = time.Duration(DB_LOGGER_DEFAULT_DUR) * time.Second
	} else {
		duration = time.Duration(cfg.DB["freq"].(int64)) * time.Second
	}

	// if no DB is specified, or nolog=true then use a dummy db adapter
	if _, ok := cfg.DB["type"]; !ok || cfg.Board.NoLog {
		adapter, _ = NewDummyAdapter(cfg)
		go startLoggingProcess(adapter, corePort, duration)
		return adapter, nil
	}

	db := cfg.DB["type"].(string)

	switch strings.ToLower(db) {
	case "sqlite3":
		adapter, err = NewSQLite3Adapter(cfg)

	case "influxdb":
		adapter, err = NewInfluxDBAdapter(cfg)

	default:
		return &DummyAdapter{cfg: cfg}, errors.New("unknown db type")
	}

	if err != nil {
		return &DummyAdapter{cfg: cfg}, err
	}

	go startLoggingProcess(adapter, corePort, duration)
	return adapter, nil
}