package resources

import (

"embed"

"fmt"

"io/fs"

"os"

"path/filepath"

)

// EmbeddedResources contains all resource files embedded at compile time

// This includes Tomcat configuration files and other framework resources

//

//go:embed files/**/*

var EmbeddedResources embed.FS

// GetResource reads a single embedded resource file

// path is relative to files/ directory (e.g., "tomcat/conf/server.xml")

func GetResource(path string) ([]byte, error) {

fullPath := filepath.Join("files", path)

data, err := EmbeddedResources.ReadFile(fullPath)

if err != nil {

return nil, fmt.Errorf("failed to read embedded resource %s: %w", path, err)

}

return data, nil

}

// ExtractToDir extracts all embedded resources to the target directory

// Preserves directory structure relative to files/

func ExtractToDir(targetDir string) error {

return fs.WalkDir(EmbeddedResources, "files", func(path string, d fs.DirEntry, err error) error {

if err != nil {

return err

}

// Calculate relative path (remove "files/" prefix)

relPath, err := filepath.Rel("files", path)

if err != nil {

return fmt.Errorf("failed to calculate relative path: %w", err)

}

targetPath := filepath.Join(targetDir, relPath)

if d.IsDir() {

return os.MkdirAll(targetPath, 0755)

}

data, err := EmbeddedResources.ReadFile(path)

if err != nil {

return fmt.Errorf("failed to read %s: %w", path, err)

}

return os.WriteFile(targetPath, data, 0644)

})

}

// ListResources returns all available resource file paths

// Paths are relative to files/ directory

func ListResources() ([]string, error) {

var paths []string

err := fs.WalkDir(EmbeddedResources, "files", func(path string, d fs.DirEntry, err error) error {

if err != nil {

return err

}

if !d.IsDir() {

relPath, err := filepath.Rel("files", path)

if err != nil {

return err

}

paths = append(paths, relPath)

}

return nil

})

return paths, err

}

// Exists checks if a resource file exists in embedded resources

func Exists(path string) bool {

fullPath := filepath.Join("files", path)

_, err := fs.Stat(EmbeddedResources, fullPath)

return err == nil

}