Refactor: Moved Go app to the root and fixed links.

app/helper/env-helper.go

@@ -0,0 +1,128 @@
+/*
+Macrame is a program that enables the user to create keyboard macros and button panels.
+The macros are saved as simple JSON files and can be linked to the button panels. The panels can
+be created with HTML and CSS.
+
+Copyright (C) 2025 Jesse Malotaux
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+package helper
+
+import (
+	"encoding/json"
+	"log"
+	"net"
+	"os"
+	"strconv"
+	"strings"
+)
+
+var configPath = "public/config.js"
+
+func EnvGet(key string) string {
+
+	if !configFileExists() {
+		CreateConfigFile(configPath)
+		CheckFeDevDir()
+	}
+
+	data, err := os.ReadFile(configPath)
+	if err != nil {
+		log.Println("Error reading config.js:", err)
+		return ""
+	}
+
+	raw := strings.TrimSpace(string(data))
+	raw = strings.TrimPrefix(raw, "window.__CONFIG__ = ")
+	raw = strings.TrimSuffix(raw, ";")
+
+	var config map[string]string
+	if err := json.Unmarshal([]byte(raw), &config); err != nil {
+		log.Println("Error parsing config.js:", err)
+		return ""
+	}
+
+	return config[key]
+}
+
+func configFileExists() bool {
+	_, err := os.Stat(configPath)
+	return err == nil
+}
+
+func CheckFeDevDir() {
+	log.Println("Checking FE dev directory...")
+	_, err := os.Stat("fe")
+
+	if err != nil {
+		log.Println("Error checking FE dev directory:", err)
+		return
+	}
+
+	copyConfigToFe()
+}
+
+func copyConfigToFe() {
+	data, err := os.ReadFile(configPath)
+
+	if err != nil {
+		log.Println("Error reading config.js:", err)
+		return
+	}
+
+	if err := os.WriteFile("fe/config.js", data, 0644); err != nil {
+		log.Println("Error writing config.js:", err)
+	}
+}
+
+func CreateConfigFile(filename string) {
+	port, _ := findOpenPort()
+	saltKey := GenerateKey()
+	salt := saltKey[:28]
+	iv := GenerateRandomIntegerString(16)
+
+	config := map[string]string{
+		"MCRM__PORT": port,
+		"MCRM__SALT": salt,
+		"MCRM__IV":   iv,
+	}
+
+	jsonData, err := json.MarshalIndent(config, "", "  ")
+	if err != nil {
+		log.Println("Error creating config JSON:", err)
+		return
+	}
+	jsData := "window.__CONFIG__ = " + string(jsonData) + ";"
+
+	log.Println("Created JS config:", jsData)
+
+	if err := os.WriteFile(filename, []byte(jsData), 0644); err != nil {
+		log.Println("Error writing config.js:", err)
+	}
+}
+
+func findOpenPort() (string, error) {
+	addr, err := net.ResolveTCPAddr("tcp", "localhost:0")
+	if err != nil {
+		return "", err
+	}
+	l, err := net.ListenTCP("tcp", addr)
+	if err != nil {
+		return "", err
+	}
+	defer l.Close()
+	return strconv.Itoa(l.Addr().(*net.TCPAddr).Port), nil
+}