utils.go

package gohbem

import (
	"encoding/json"
	"fmt"
	"math"
	"net/http"
)

// MasterFileURL is a remote address used to fetch MasterFile.
const MasterFileURL = "https://raw.githubusercontent.com/WatWowMap/Masterfile-Generator/master/master-latest-basics.json"

func roundFloat(val float64, precision uint) float64 {
	ratio := math.Pow(10, float64(precision))
	return math.Round(val*ratio) / ratio
}

func containsInt(slice []int, value int) bool {
	for _, v := range slice {
		if v == value {
			return true
		}
	}
	return false
}

func fetchMasterFile() (PokemonData, error) {
	req, err := http.NewRequest("GET", MasterFileURL, nil)
	if err != nil {
		return PokemonData{}, ErrMasterFileFetch
	}
	req.Header.Set("User-Agent", fmt.Sprintf("Gohbem/%s", VERSION))

	client := &http.Client{}
	resp, err := client.Do(req)
	if err != nil {
		return PokemonData{}, ErrMasterFileFetch
	}
	//goland:noinspection GoUnhandledErrorResult
	defer resp.Body.Close()

	var data PokemonData
	err = json.NewDecoder(resp.Body).Decode(&data)
	if err != nil {
		return PokemonData{}, ErrMasterFileDecode
	}
	data.Initialized = true
	return data, nil
}

func safetyCheck(o *Ohbem) error {
	if !o.PokemonData.Initialized {
		return ErrMasterFileUnloaded
	}
	if len(o.Leagues) == 0 {
		return ErrLeaguesMissing
	}
	if len(o.LevelCaps) == 0 {
		return ErrLevelCapsMissing
	}
	return nil
}

// log logs the given message using the provided logger, if available. If no logger is set, the message is ignored.
func (o *Ohbem) log(message string) {
	if o.Logger != nil {
		o.Logger.Print(message)
	}
}