Initial QSfera import

Server/qsfera/pkg/init/functions.go

@@ -0,0 +1,108 @@
+package init
+
+import (
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"os/exec"
+	"path"
+	"time"
+)
+
+func checkConfigPath(configPath string) error {
+	targetPath := path.Join(configPath, configFilename)
+	if _, err := os.Stat(targetPath); err == nil {
+		return fmt.Errorf("config in %s already exists", targetPath)
+	}
+	return nil
+}
+
+func configExists(configPath string) bool {
+	targetPath := path.Join(configPath, configFilename)
+	if _, err := os.Stat(targetPath); err == nil {
+		return true
+	}
+	return false
+}
+
+func backupQsferaConfigFile(configPath string) (string, error) {
+	sourceConfig := path.Join(configPath, configFilename)
+	targetBackupConfig := path.Join(configPath, configFilename+"."+time.Now().Format("2006-01-02-15-04-05")+".backup")
+	source, err := os.Open(sourceConfig)
+	if err != nil {
+		log.Fatalf("Could not read %s (%s)", sourceConfig, err)
+	}
+	defer source.Close()
+	target, err := os.Create(targetBackupConfig)
+	if err != nil {
+		log.Fatalf("Could not generate backup %s (%s)", targetBackupConfig, err)
+	}
+	defer target.Close()
+	_, err = io.Copy(target, source)
+	if err != nil {
+		log.Fatalf("Could not write backup %s (%s)", targetBackupConfig, err)
+	}
+	return targetBackupConfig, nil
+}
+
+// printBanner prints the generated qsfera config banner.
+func printBanner(targetPath, ocAdminServicePassword, targetBackupConfig string) {
+	fmt.Printf(
+		"\n=========================================\n"+
+			" generated КуСфера Config\n"+
+			"=========================================\n"+
+			" configpath : %s\n"+
+			" user       : admin\n"+
+			" password   : %s\n\n",
+		targetPath, ocAdminServicePassword)
+	if targetBackupConfig != "" {
+		fmt.Printf("\n=========================================\n"+
+			"An older config file has been backed up to\n %s\n\n",
+			targetBackupConfig)
+	}
+}
+
+// writeConfig writes the config to the target path and prints a banner
+func writeConfig(configPath, ocAdminServicePassword, targetBackupConfig string, yamlOutput []byte) error {
+	targetPath := path.Join(configPath, configFilename)
+	err := os.WriteFile(targetPath, yamlOutput, 0600)
+	if err != nil {
+		return err
+	}
+	printBanner(targetPath, ocAdminServicePassword, targetBackupConfig)
+	return nil
+}
+
+// writePatch writes the diff to a file
+func writePatch(configPath string, yamlOutput []byte) error {
+	fmt.Println("running in diff mode")
+	tmpFile := path.Join(configPath, "qsfera.yaml.tmp")
+	err := os.WriteFile(tmpFile, yamlOutput, 0600)
+	if err != nil {
+		return err
+	}
+	fmt.Println("diff -u " + path.Join(configPath, configFilename) + " " + tmpFile)
+	cmd := exec.Command("diff", "-u", path.Join(configPath, configFilename), tmpFile)
+	stdout, err := cmd.Output()
+	if err == nil {
+		err = os.Remove(tmpFile)
+		if err != nil {
+			return err
+		}
+		fmt.Println("no changes, your config is up to date")
+		return nil
+	}
+	fmt.Println(string(stdout))
+	err = os.Remove(tmpFile)
+	if err != nil {
+		return err
+	}
+	patchPath := path.Join(configPath, "qsfera.config.patch")
+	err = os.WriteFile(patchPath, stdout, 0600)
+	if err != nil {
+		return err
+	}
+	fmt.Printf("diff written to %s\n", patchPath)
+	return nil
+}