moved server main to cmd/server

cmd/server/config.go

@@ -0,0 +1,64 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/BurntSushi/toml"
+)
+
+type Config struct {
+	CacheRoot     string     `toml:"cache_root"`
+	MirrorURLs    []string   `toml:"mirror_urls"`
+	MirroredRepos []string   `toml:"mirrored_repos"`
+	Port          string     `toml:"port"`
+	Auth          AuthConfig `toml:"auth"`
+}
+
+type AuthConfig struct {
+	Token string `toml:"token"`
+}
+
+/* Function kept for reference for future logic
+func NewConfig() *Config {
+	return &Config{
+		CacheRoot: "/home/ewpt3ch/dev/pacman-cache-server/tmprepo",
+		MirrorURLs: "https://us.mirrors.cicku.me/archlinux/",
+		Port:      "8090",
+		Auth:      AuthConfig{Token: "FakeToken"},
+	}
+}
+*/
+
+func ReadConfig(path string) (*Config, error) {
+
+	var cfg Config
+	_, err := toml.DecodeFile(path, &cfg)
+	if err != nil {
+		return nil, fmt.Errorf("error loading config from %s: %w", path, err)
+	}
+
+	if err = cfg.validate(); err != nil {
+		return nil, fmt.Errorf("invalid config: %w", err)
+	}
+
+	return &cfg, nil
+}
+
+func (c *Config) validate() error {
+	if c.CacheRoot == "" {
+		return fmt.Errorf("cache root is required")
+	}
+	if len(c.MirrorURLs) == 0 {
+		return fmt.Errorf("at least one mirror is required")
+	}
+	if len(c.MirroredRepos) == 0 {
+		return fmt.Errorf("at least one repo is required")
+	}
+	if c.Port == "" {
+		return fmt.Errorf("port required")
+	}
+	if c.Auth.Token == "" {
+		return fmt.Errorf("auth token is required")
+	}
+	return nil
+}