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@@ -0,0 +1,171 @@
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+package iot
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+
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+import (
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+ "bufio"
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+ "encoding/base64"
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+ "errors"
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+ "io/ioutil"
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+ "log"
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+ "net/http"
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+ "os"
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+ "time"
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+)
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+
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+/*
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+ SYSTEM COMMON FUNCTIONS
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+
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+ This is a system function that put those we usually use function but not belongs to
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+ any module / system.
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+
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+ E.g. fileExists / IsDir etc
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+
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+*/
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+
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+/*
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+ Basic Response Functions
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+
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+ Send response with ease
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+*/
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+//Send text response with given w and message as string
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+func sendTextResponse(w http.ResponseWriter, msg string) {
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+ w.Write([]byte(msg))
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+}
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+
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+//Send JSON response, with an extra json header
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+func sendJSONResponse(w http.ResponseWriter, json string) {
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+ w.Header().Set("Content-Type", "application/json")
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+ w.Write([]byte(json))
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+}
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+
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+func sendErrorResponse(w http.ResponseWriter, errMsg string) {
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+ w.Header().Set("Content-Type", "application/json")
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+ w.Write([]byte("{\"error\":\"" + errMsg + "\"}"))
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+}
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+
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+func sendOK(w http.ResponseWriter) {
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+ w.Header().Set("Content-Type", "application/json")
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+ w.Write([]byte("\"OK\""))
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+}
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+
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+/*
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+ The paramter move function (mv)
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+
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+ You can find similar things in the PHP version of ArOZ Online Beta. You need to pass in
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+ r (HTTP Request Object)
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+ getParamter (string, aka $_GET['This string])
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+
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+ Will return
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+ Paramter string (if any)
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+ Error (if error)
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+
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+*/
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+func mv(r *http.Request, getParamter string, postMode bool) (string, error) {
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+ if postMode == false {
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+ //Access the paramter via GET
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+ keys, ok := r.URL.Query()[getParamter]
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+
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+ if !ok || len(keys[0]) < 1 {
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+ //log.Println("Url Param " + getParamter +" is missing")
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+ return "", errors.New("GET paramter " + getParamter + " not found or it is empty")
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+ }
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+
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+ // Query()["key"] will return an array of items,
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+ // we only want the single item.
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+ key := keys[0]
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+ return string(key), nil
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+ } else {
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+ //Access the parameter via POST
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+ r.ParseForm()
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+ x := r.Form.Get(getParamter)
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+ if len(x) == 0 || x == "" {
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+ return "", errors.New("POST paramter " + getParamter + " not found or it is empty")
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+ }
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+ return string(x), nil
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+ }
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+
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+}
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+
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+func stringInSlice(a string, list []string) bool {
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+ for _, b := range list {
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+ if b == a {
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+ return true
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+ }
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+ }
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+ return false
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+}
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+
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+func fileExists(filename string) bool {
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+ _, err := os.Stat(filename)
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+ if os.IsNotExist(err) {
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+ return false
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+ }
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+ return true
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+}
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+
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+func isDir(path string) bool {
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+ if fileExists(path) == false {
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+ return false
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+ }
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+ fi, err := os.Stat(path)
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+ if err != nil {
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+ log.Fatal(err)
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+ return false
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+ }
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+ switch mode := fi.Mode(); {
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+ case mode.IsDir():
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+ return true
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+ case mode.IsRegular():
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+ return false
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+ }
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+ return false
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+}
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+
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+func inArray(arr []string, str string) bool {
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+ for _, a := range arr {
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+ if a == str {
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+ return true
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+ }
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+ }
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+ return false
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+}
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+
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+func timeToString(targetTime time.Time) string {
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+ return targetTime.Format("2006-01-02 15:04:05")
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+}
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+
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+func loadImageAsBase64(filepath string) (string, error) {
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+ if !fileExists(filepath) {
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+ return "", errors.New("File not exists")
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+ }
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+ f, _ := os.Open(filepath)
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+ reader := bufio.NewReader(f)
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+ content, _ := ioutil.ReadAll(reader)
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+ encoded := base64.StdEncoding.EncodeToString(content)
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+ return string(encoded), nil
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+}
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+
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+func pushToSliceIfNotExist(slice []string, newItem string) []string {
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+ itemExists := false
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+ for _, item := range slice {
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+ if item == newItem {
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+ itemExists = true
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+ }
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+ }
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+
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+ if !itemExists {
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+ slice = append(slice, newItem)
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+ }
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+
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+ return slice
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+}
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+
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+func removeFromSliceIfExists(slice []string, target string) []string {
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+ newSlice := []string{}
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+ for _, item := range slice {
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+ if item != target {
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+ newSlice = append(newSlice, item)
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+ }
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+ }
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+
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+ return newSlice
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+}
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TC pushbot 5