package config

import (
	"encoding/base64"
	"testing"
)

func TestLoadRequiresEncKey32Bytes(t *testing.T) {
	t.Setenv("DATABASE_URL", "postgres://x")
	t.Setenv("AUTH_USER", "admin")
	t.Setenv("AUTH_PASS", "pass")
	t.Setenv("SESSION_SECRET", "secret")
	t.Setenv("ENC_KEY", base64.StdEncoding.EncodeToString(make([]byte, 16))) // wrong size

	if _, err := Load(); err == nil {
		t.Fatal("expected error for 16-byte ENC_KEY, got nil")
	}
}

func TestLoadDefaults(t *testing.T) {
	t.Setenv("DATABASE_URL", "postgres://x")
	t.Setenv("AUTH_USER", "admin")
	t.Setenv("AUTH_PASS", "pass")
	t.Setenv("SESSION_SECRET", "secret")
	t.Setenv("ENC_KEY", base64.StdEncoding.EncodeToString(make([]byte, 32)))

	cfg, err := Load()
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if cfg.HTTPAddr != ":8080" {
		t.Errorf("HTTPAddr = %q, want :8080", cfg.HTTPAddr)
	}
	if cfg.WorkerConcurrency != 4 {
		t.Errorf("WorkerConcurrency = %d, want 4", cfg.WorkerConcurrency)
	}
}