Refactor each command in its own file

tesseract/genconf/env.go

@@ -0,0 +1,91 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+func generateEnv(yamlFile string) {
+	config := loadConfig(yamlFile)
+
+	// Check that all local directories exist
+	for _, logEntry := range config.Logs {
+		if _, err := os.Stat(logEntry.LocalDirectory); os.IsNotExist(err) {
+			log.Fatalf("User is required to create %s", logEntry.LocalDirectory)
+		}
+	}
+
+	// Generate .env file for each log
+	for _, logEntry := range config.Logs {
+		envPath := filepath.Join(logEntry.LocalDirectory, ".env")
+
+		// Create combined roots.pem file
+		rootsPemPath := filepath.Join(logEntry.LocalDirectory, "roots.pem")
+		err := createCombinedRootsPem(config.Roots, logEntry.ExtraRoots, rootsPemPath)
+		if err != nil {
+			log.Fatalf("Failed to create %s: %v", rootsPemPath, err)
+		}
+		fmt.Printf("Generated %s\n", rootsPemPath)
+
+		// Build TESSERACT_ARGS string
+		args := []string{
+			fmt.Sprintf("--private_key=%s", logEntry.Secret),
+			fmt.Sprintf("--origin=%s.log.ct.ipng.ch", logEntry.ShortName),
+			fmt.Sprintf("--storage_dir=%s", logEntry.LocalDirectory),
+			fmt.Sprintf("--roots_pem_file=%s", rootsPemPath),
+		}
+
+		tesseractArgs := strings.Join(args, " ")
+		envContent := fmt.Sprintf("TESSERACT_ARGS=\"%s\"\n", tesseractArgs)
+
+		err = os.WriteFile(envPath, []byte(envContent), 0644)
+		if err != nil {
+			log.Fatalf("Failed to write %s: %v", envPath, err)
+		}
+
+		fmt.Printf("Generated %s\n", envPath)
+	}
+}
+
+func createCombinedRootsPem(rootsFile, extraRootsFile, outputPath string) error {
+	// Create output file
+	outputFile, err := os.Create(outputPath)
+	if err != nil {
+		return fmt.Errorf("failed to create output file: %v", err)
+	}
+	defer outputFile.Close()
+
+	// Copy main roots file
+	if rootsFile != "" {
+		rootsData, err := os.Open(rootsFile)
+		if err != nil {
+			return fmt.Errorf("failed to open roots file %s: %v", rootsFile, err)
+		}
+		defer rootsData.Close()
+
+		_, err = io.Copy(outputFile, rootsData)
+		if err != nil {
+			return fmt.Errorf("failed to copy roots file: %v", err)
+		}
+	}
+
+	// Append extra roots file if it exists
+	if extraRootsFile != "" {
+		extraRootsData, err := os.Open(extraRootsFile)
+		if err != nil {
+			return fmt.Errorf("failed to open extra roots file %s: %v", extraRootsFile, err)
+		}
+		defer extraRootsData.Close()
+
+		_, err = io.Copy(outputFile, extraRootsData)
+		if err != nil {
+			return fmt.Errorf("failed to copy extra roots file: %v", err)
+		}
+	}
+
+	return nil
+}