Initialize AutoLibrary website with Gitea deployment

config/config.go

@@ -0,0 +1,117 @@
+package config
+
+import (
+	"encoding/json"
+	"fmt"
+	"log"
+	"os"
+	"sync"
+)
+
+type Config struct {
+	Backend struct {
+		Port string `json:"port"`
+		Host string `json:"host"`
+		Auth struct {
+			Required bool   `json:"required"`
+			Key      string `json:"key"`
+		} `json:"auth"`
+		Database struct {
+			Versions struct {
+				Path string `json:"path"`
+			} `json:"versions"`
+			Bulletins struct {
+				Path string `json:"path"`
+			} `json:"bulletins"`
+			Themes struct {
+				Path string `json:"path"`
+			} `json:"themes"`
+			ThemesFiles struct {
+				Path string `json:"path"`
+			} `json:"themes_files"`
+		} `json:"database"`
+		Casdoor struct {
+			Endpoint     string `json:"endpoint"`
+			ClientID     string `json:"client_id"`
+			ClientSecret string `json:"client_secret"`
+			Certificate  string `json:"certificate"`
+			Organization string `json:"organization"`
+			Application  string `json:"application"`
+		} `json:"casdoor"`
+	} `json:"backend"`
+
+	Frontend struct {
+		Port   string `json:"port"`
+		Host   string `json:"host"`
+		Static struct {
+			Path string `json:"path"`
+		} `json:"static"`
+	} `json:"frontend"`
+}
+
+var (
+	instance *Config
+	once     sync.Once
+	loadErr  error
+)
+
+func createDefaultConfig() *Config {
+	config := &Config{}
+	config.Backend.Port = "8080"
+	config.Backend.Host = "127.0.0.1"
+	config.Backend.Auth.Required = false
+	config.Backend.Auth.Key = "null"
+	config.Backend.Database.Versions.Path = "./backend/data/versions.db"
+	config.Backend.Database.Bulletins.Path = "./backend/data/bulletins.db"
+	config.Backend.Database.Themes.Path = "./backend/data/themes.db"
+	config.Backend.Database.ThemesFiles.Path = "./backend/data/themes_files"
+
+	config.Backend.Casdoor.Endpoint = "http://127.0.0.1:8000"
+	config.Backend.Casdoor.ClientID = ""
+	config.Backend.Casdoor.ClientSecret = ""
+	config.Backend.Casdoor.Certificate = ""
+	config.Backend.Casdoor.Organization = "autolibrary"
+	config.Backend.Casdoor.Application = "marketplace"
+
+	config.Frontend.Port = "3000"
+	config.Frontend.Host = "127.0.0.1"
+	config.Frontend.Static.Path = "./frontend/dist"
+
+	return config
+}
+
+func LoadConfig(configPath string, allowDefaults bool) (*Config, error) {
+	once.Do(func() {
+		data, err := os.ReadFile(configPath)
+		if err != nil {
+			loadErr = err
+			return
+		}
+		cfg := createDefaultConfig()
+		if err := json.Unmarshal(data, &cfg); err != nil {
+			loadErr = fmt.Errorf("decode config %q: %w", configPath, err)
+			return
+		}
+		if cfg == nil {
+			loadErr = fmt.Errorf("config %q must be a JSON object", configPath)
+			return
+		}
+		instance = cfg
+	})
+	if loadErr != nil {
+		if !allowDefaults {
+			return nil, loadErr
+		}
+		log.Printf("[W] using default config: %v", loadErr)
+		return createDefaultConfig(), nil
+	}
+	log.Printf("[I] config loaded successfully from: %s", configPath)
+	return instance, nil
+}
+
+func GetConfig() *Config {
+	if instance == nil {
+		return createDefaultConfig()
+	}
+	return instance
+}