feat: initial release

internal/app/config.go

@@ -0,0 +1,58 @@
+package app
+
+import (
+	"flag"
+	"fmt"
+	"html/template"
+	"log/slog"
+	"os"
+	"strconv"
+)
+
+type Config struct {
+	Addr       string
+	StorageDir string
+	MaxMB      int64
+}
+
+type App struct {
+	Conf   Config
+	Tmpl   *template.Template
+	Logger *slog.Logger
+}
+
+func LoadConfig() Config {
+	h := getEnv("SAFEBIN_HOST", "0.0.0.0")
+	p := getEnvInt("SAFEBIN_PORT", 8080)
+	s := getEnv("SAFEBIN_STORAGE", "./storage")
+	mDefault := int64(getEnvInt("SAFEBIN_MAX_MB", 512))
+
+	var m int64
+	flag.StringVar(&h, "h", h, "Bind address")
+	flag.IntVar(&p, "p", p, "Port")
+	flag.StringVar(&s, "s", s, "Storage directory")
+	flag.Int64Var(&m, "m", mDefault, "Max file size in MB")
+	flag.Parse()
+
+	return Config{Addr: fmt.Sprintf("%s:%d", h, p), StorageDir: s, MaxMB: m}
+}
+
+func getEnv(k, f string) string {
+	if v, ok := os.LookupEnv(k); ok {
+		return v
+	}
+	return f
+}
+
+func getEnvInt(k string, f int) int {
+	if v, ok := os.LookupEnv(k); ok {
+		if i, err := strconv.Atoi(v); err == nil {
+			return i
+		}
+	}
+	return f
+}
+
+func ParseTemplates() *template.Template {
+	return template.Must(template.ParseGlob("./web/templates/*.html"))
+}