command

internal/values.go

@@ -0,0 +1,117 @@
+package internal
+
+import (
+	"bufio"
+	"fmt"
+	"oc-k8s/utils"
+	"os"
+	"regexp"
+	"strings"
+)
+
+func Help_Values() {
+	fmt.Println(`
+Values commands: oc-k8s <action> values
+  create   - Create a new values release yaml
+  help     - Show this help message
+
+Usage:
+  oc-k8s create values [release] [env_folder] [env_file] 
+    release - Release values name (required)
+	env_folder - Helm config folder (optionnal, default: .)
+    env_file - env to map (optionnal)
+  oc-k8s help values `)
+}
+
+var varPattern = regexp.MustCompile(`\$\{([A-Za-z_][A-Za-z0-9_]*)[:-]([^}]+)\}`)
+
+func Create_Values(args ...string) error {
+	folder := "."
+	release := "dev"
+	conf := ""
+
+	if len(args) > 0 {
+		release = args[0]
+	}
+	if len(args) > 1 {
+		folder = args[1]
+	}
+	if len(args) > 2 {
+		conf = args[2]
+	}
+	return generateConfig(conf, release, folder)
+}
+
+func generateConfig(confFile string, release string, output_folder string) error {
+	// Load env file if provided
+	var err error
+	confs := map[string]string{}
+	if confFile != "" {
+		if confs, err = loadEnvFile(confFile); err != nil {
+			return err
+		}
+	} else {
+		confFile = "no configuration file"
+	}
+	// Read template
+	content, err := utils.ReadFS("assets/values.yaml.template")
+	if err != nil {
+		return err
+	}
+
+	rendered := renderTemplate(string(content), confs)
+
+	// Ensure output directory exists
+	if err := os.MkdirAll(output_folder, 0755); err != nil {
+		return err
+	}
+
+	// Write output
+	if err := os.WriteFile(output_folder+"/"+release+"-values.yaml", []byte(rendered), 0644); err != nil {
+		return err
+	}
+	fmt.Printf("Rendered %s from %s using %s\n", output_folder+"/"+release+"-values.yaml", "assets/values.yaml.template", confFile)
+	return nil
+}
+
+func loadEnvFile(path string) (map[string]string, error) {
+	envs := map[string]string{}
+	file, err := os.Open(path)
+	if err != nil {
+		return envs, err
+	}
+	defer file.Close()
+
+	scanner := bufio.NewScanner(file)
+	for scanner.Scan() {
+		line := strings.TrimSpace(scanner.Text())
+
+		if line == "" || strings.HasPrefix(line, "#") {
+			continue
+		}
+
+		parts := strings.SplitN(line, "=", 2)
+		if len(parts) != 2 {
+			continue
+		}
+
+		key := strings.TrimSpace(parts[0])
+		val := strings.Trim(strings.TrimSpace(parts[1]), `"'`)
+
+		envs[key] = val
+	}
+	return envs, scanner.Err()
+}
+
+func renderTemplate(input string, envs map[string]string) string {
+	return varPattern.ReplaceAllStringFunc(input, func(match string) string {
+		sub := varPattern.FindStringSubmatch(match)
+		varName := sub[1]
+		defaultVal := sub[2][1:]
+
+		if val, ok := envs[varName]; ok && val != "" {
+			return val
+		}
+		return defaultVal
+	})
+}