233 lines
5.8 KiB
Go
233 lines
5.8 KiB
Go
package config
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import (
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"errors"
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"fmt"
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"io/fs"
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"io/ioutil"
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"os"
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"path"
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"path/filepath"
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"strings"
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"github.com/joho/godotenv"
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"github.com/sirupsen/logrus"
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)
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var ABRA_DIR = os.ExpandEnv("$HOME/.abra")
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var ABRA_SERVER_FOLDER = path.Join(ABRA_DIR, "servers")
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var APPS_JSON = path.Join(ABRA_DIR, "apps.json")
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var APPS_DIR = path.Join(ABRA_DIR, "apps")
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var REPOS_BASE_URL = "https://git.coopcloud.tech/coop-cloud"
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// Type aliases to make code hints easier to understand
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type AppEnv = map[string]string
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type AppName = string
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type App struct {
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Name AppName
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Type string
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Domain string
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Env AppEnv
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File AppFile
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}
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type ByServer []App
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func (a ByServer) Len() int { return len(a) }
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func (a ByServer) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
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func (a ByServer) Less(i, j int) bool {
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return strings.ToLower(a[i].File.Server) < strings.ToLower(a[j].File.Server)
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}
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type ByServerAndType []App
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func (a ByServerAndType) Len() int { return len(a) }
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func (a ByServerAndType) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
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func (a ByServerAndType) Less(i, j int) bool {
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if a[i].File.Server == a[j].File.Server {
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return strings.ToLower(a[i].Type) < strings.ToLower(a[j].Type)
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} else {
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return strings.ToLower(a[i].File.Server) < strings.ToLower(a[j].File.Server)
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}
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}
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type ByType []App
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func (a ByType) Len() int { return len(a) }
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func (a ByType) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
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func (a ByType) Less(i, j int) bool {
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return strings.ToLower(a[i].Type) < strings.ToLower(a[j].Type)
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}
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type ByName []App
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func (a ByName) Len() int { return len(a) }
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func (a ByName) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
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func (a ByName) Less(i, j int) bool {
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return strings.ToLower(a[i].Name) < strings.ToLower(a[j].Name)
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}
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type AppFile struct {
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Path string
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Server string
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}
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type AppFiles = map[AppName]AppFile
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func LoadAppFiles(servers ...string) (AppFiles, error) {
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appFiles := make(AppFiles)
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if len(servers) == 1 && servers[0] == "" {
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// Empty servers flag, one string will always be passed
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var err error
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servers, err = getAllFoldersInDirectory(ABRA_SERVER_FOLDER)
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if err != nil {
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return nil, err
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}
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}
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for _, server := range servers {
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serverDir := path.Join(ABRA_SERVER_FOLDER, server)
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files, err := getAllFilesInDirectory(serverDir)
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if err != nil {
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return nil, err
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}
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for _, file := range files {
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appName := strings.TrimSuffix(file.Name(), ".env")
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appFilePath := path.Join(ABRA_SERVER_FOLDER, server, file.Name())
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appFiles[appName] = AppFile{
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Path: appFilePath,
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Server: server,
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}
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}
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}
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return appFiles, nil
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}
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// GetApp loads an apps settings, reading it from file, in preparation to use it
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//
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// ONLY use when ready to use the env file to keep IO down and
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// because this exits with code 1 if the file cannot be found or is malformed
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func GetApp(apps AppFiles, name AppName) (App, error) {
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appFile, exists := apps[name]
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if !exists {
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return App{}, fmt.Errorf("cannot find app file with name '%s'", name)
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}
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app, err := readAppFile(appFile, name)
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if err != nil {
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return App{}, err
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}
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return app, nil
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}
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func GetApps(appFiles AppFiles) ([]App, error) {
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var apps []App
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for name := range appFiles {
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app, err := GetApp(appFiles, name)
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if err != nil {
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return nil, err
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}
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apps = append(apps, app)
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}
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return apps, nil
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}
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// TODO: maybe better names than read and get
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func readAppFile(appFile AppFile, name AppName) (App, error) {
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env, err := readEnv(appFile.Path)
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if err != nil {
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return App{}, fmt.Errorf("env file for '%s' couldn't be read: %s", name, err.Error())
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}
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app, err := makeApp(env, name, appFile)
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if err != nil {
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return App{}, fmt.Errorf("env file for '%s' has issues: %s", name, err.Error())
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}
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return app, nil
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}
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func readEnv(filePath string) (AppEnv, error) {
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var envFile AppEnv
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envFile, err := godotenv.Read(filePath)
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if err != nil {
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return nil, err
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}
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return envFile, nil
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}
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func makeApp(env AppEnv, name string, appFile AppFile) (App, error) {
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// Checking for type as it is required - apps wont work without it
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domain := env["DOMAIN"]
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apptype, ok := env["TYPE"]
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if !ok {
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return App{}, errors.New("missing TYPE variable")
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}
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return App{
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Name: name,
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Domain: domain,
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Type: apptype,
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Env: env,
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File: appFile,
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}, nil
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}
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func ReadServerNames() ([]string, error) {
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serverNames, err := getAllFoldersInDirectory(ABRA_SERVER_FOLDER)
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if err != nil {
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return nil, err
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}
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return serverNames, nil
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}
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// getAllFilesInDirectory returns filenames of all files in directory
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func getAllFilesInDirectory(directory string) ([]fs.FileInfo, error) {
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var realFiles []fs.FileInfo
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files, err := ioutil.ReadDir(directory)
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if err != nil {
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return nil, err
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}
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for _, file := range files {
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// Follow any symlinks
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filePath := path.Join(directory, file.Name())
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realPath, err := filepath.EvalSymlinks(filePath)
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if err != nil {
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logrus.Warningf("broken symlink in your abra config folders: '%s'", filePath)
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} else {
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realFile, err := os.Stat(realPath)
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if err != nil {
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return nil, err
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}
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if !realFile.IsDir() {
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realFiles = append(realFiles, file)
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}
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}
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}
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return realFiles, nil
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}
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// getAllFoldersInDirectory returns both folder and symlink paths
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func getAllFoldersInDirectory(directory string) ([]string, error) {
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var folders []string
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files, err := ioutil.ReadDir(directory)
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if err != nil {
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return nil, err
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}
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if len(files) == 0 {
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return nil, fmt.Errorf("directory is empty: '%s'", directory)
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}
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for _, file := range files {
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// Check if file is directory or symlink
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if file.IsDir() || file.Mode()&fs.ModeSymlink != 0 {
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filePath := path.Join(directory, file.Name())
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realDir, err := filepath.EvalSymlinks(filePath)
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if err != nil {
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logrus.Warningf("broken symlink in your abra config folders: '%s'", filePath)
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} else if stat, err := os.Stat(realDir); err == nil && stat.IsDir() {
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// path is a directory
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folders = append(folders, file.Name())
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}
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}
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}
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return folders, nil
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}
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