Implement basic skinstore plugin using filesystem

core/skinstore.go

@@ -0,0 +1,125 @@
+package core
+
+import (
+	"bufio"
+	"fmt"
+	"github.com/ilyakaznacheev/cleanenv"
+	"github.com/josephbmanley/OpenSkins-Common/datatypes"
+	"os"
+)
+
+type standaloneConfig struct {
+	SkinDirectory    string `yaml:"skin_directory" env:"SKIN_DIR" env-default:"skins"`
+	WebserverDomain  string `yaml:"domain" env:"DOMAIN" env-default:"localhost"`
+	WebserverSubpath string `yaml:"subpath" env:"SUBPATH" env-default:""`
+}
+
+const configFile = "standalone_config.yaml"
+
+var config standaloneConfig
+
+// SkinstoreStandalone is root of the skinstore plugin
+type SkinstoreStandalone struct{}
+
+// Initialize intializes the skinstore module
+func (s *SkinstoreStandalone) Initialize() error {
+
+	for _, w := range warnings {
+		fmt.Printf("WARNING: %v\n", w)
+	}
+
+	// Check if config file exists
+	if _, err := os.Stat(configFile); err == nil {
+
+		// Read config with config file & environment variables
+		if err := cleanenv.ReadConfig(configFile, &config); err != nil {
+			return err
+		}
+	} else if os.IsNotExist(err) {
+
+		// Read config with only environment variables
+		if err := cleanenv.ReadEnv(&config); err != nil {
+			return err
+		}
+	} else {
+		return err
+	}
+
+	return nil
+}
+
+// GetSkin returns a skin object
+func (s *SkinstoreStandalone) GetSkin(skinID string) (*datatypes.Skin, error) {
+
+	skinPath := fmt.Sprintf("%v/%v", config.SkinDirectory, skinID)
+
+	// Check if skin exists
+	if _, err := os.Stat(skinPath); err != nil {
+
+		// Catch not exist errors
+		if os.IsNotExist(err) {
+			return nil, nil
+		}
+
+		return nil, err
+	}
+
+	skin := datatypes.Skin{
+		UID:      skinID,
+		Name:     skinID,
+		Location: fmt.Sprintf("%v/%v%v", config.WebserverDomain, config.WebserverSubpath, skinID),
+		Metadata: map[string]string{},
+	}
+
+	return &skin, nil
+}
+
+// AddSkin returns a skin creates a new skin object
+func (s *SkinstoreStandalone) AddSkin(skinID string, fileData []byte) error {
+
+	skinPath := fmt.Sprintf("%v/%v", config.SkinDirectory, skinID)
+
+	if _, err := os.Stat(skinPath); err != nil {
+
+		// Check if error was not 404 error
+		if !os.IsNotExist(err) {
+			return err
+		}
+
+		// Crate file if it didn't exist
+		if _, err := os.Create(skinPath); err != nil {
+			return err
+		}
+
+	}
+
+	// Open file with rw permissions
+	file, err := os.OpenFile(skinPath, os.O_RDWR|os.O_CREATE, 0755)
+	if err != nil {
+		return err
+	}
+
+	// Write data to file
+	writer := bufio.NewWriter(file)
+	if _, err = writer.Write(fileData); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// DeleteSkin deletes a skin object
+func (s *SkinstoreStandalone) DeleteSkin(skinID string) error {
+	skinPath := fmt.Sprintf("%v/%v", config.SkinDirectory, skinID)
+
+	// Check if skin exists
+	if _, err := os.Stat(skinPath); err != nil {
+		// Check if error was not 404 error
+		if !os.IsNotExist(err) {
+			return err
+		}
+		return nil
+	}
+
+	return os.Remove(skinPath)
+}

core/warnings.go

@@ -0,0 +1,6 @@
+package core
+
+var warnings = []string{
+	"Standalone plugin does not yet implement metadata feature",
+	"Standalone plugin currently do not save a skin's name",
+}