package config

import (
	"testing"
	"time"
)

func setRequiredEnv(t *testing.T) {
	t.Helper()
	t.Setenv("JWT_SECRET", "test-secret")
	t.Setenv("PG_PASSWORD", "test-pass")
}

func TestLoadStorageBackend(t *testing.T) {
	t.Run("defaults to s3", func(t *testing.T) {
		setRequiredEnv(t)
		t.Setenv("STORAGE_BACKEND", "")
		cfg, err := Load()
		if err != nil {
			t.Fatalf("load: %v", err)
		}
		if cfg.Storage.Backend != "s3" {
			t.Fatalf("backend = %q, want s3", cfg.Storage.Backend)
		}
	})

	t.Run("fs with root", func(t *testing.T) {
		setRequiredEnv(t)
		t.Setenv("STORAGE_BACKEND", "fs")
		t.Setenv("FS_ROOT", "/var/lib/galo/objects")
		cfg, err := Load()
		if err != nil {
			t.Fatalf("load: %v", err)
		}
		if cfg.Storage.Backend != "fs" || cfg.Storage.FSRoot != "/var/lib/galo/objects" {
			t.Fatalf("storage = %+v", cfg.Storage)
		}
	})

	t.Run("fs without root", func(t *testing.T) {
		setRequiredEnv(t)
		t.Setenv("STORAGE_BACKEND", "fs")
		t.Setenv("FS_ROOT", "")
		t.Setenv("URL_SECRET", "")
		if _, err := Load(); err == nil {
			t.Fatal("expected error for fs without FS_ROOT")
		}
	})

	t.Run("invalid backend", func(t *testing.T) {
		setRequiredEnv(t)
		t.Setenv("STORAGE_BACKEND", "gcs")
		if _, err := Load(); err == nil {
			t.Fatal("expected error for invalid backend")
		}
	})

	t.Run("object url ttl", func(t *testing.T) {
		setRequiredEnv(t)
		t.Setenv("STORAGE_BACKEND", "")
		t.Setenv("OBJECT_URL_TTL", "30m")
		cfg, err := Load()
		if err != nil {
			t.Fatalf("load: %v", err)
		}
		if cfg.Storage.URLTTL != 30*time.Minute {
			t.Fatalf("URLTTL = %v, want 30m", cfg.Storage.URLTTL)
		}
	})
}