package config

import (
	"os"
	"testing"

	"github.com/stretchr/testify/require"
)

func TestLoad_FromEnv(t *testing.T) {
	t.Setenv("APP_ENV", "test")
	t.Setenv("APP_HTTP_ADDR", ":9090")
	t.Setenv("APP_DB_DSN", "postgres://test")
	t.Setenv("APP_MASTER_KEY", "00112233445566778899aabbccddeeff00112233445566778899aabbccddeeff")
	t.Setenv("APP_DATA_DIR", "/tmp/acw")
	t.Setenv("APP_BOOTSTRAP_ADMIN_EMAIL", "a@b.c")
	t.Setenv("APP_BOOTSTRAP_ADMIN_PASSWORD", "pw12345678")

	cfg, err := Load("")
	require.NoError(t, err)
	require.Equal(t, "test", cfg.Env)
	require.Equal(t, ":9090", cfg.HTTP.Addr)
	require.Equal(t, "postgres://test", cfg.DB.DSN)
	require.Len(t, cfg.MasterKey, 32) // hex decoded → 32 bytes
	require.Equal(t, "/tmp/acw", cfg.DataDir)
	require.Equal(t, "a@b.c", cfg.Bootstrap.AdminEmail)
}

func TestLoad_MissingMasterKey(t *testing.T) {
	os.Clearenv()
	t.Setenv("APP_DB_DSN", "x")
	_, err := Load("")
	require.Error(t, err)
	require.Contains(t, err.Error(), "MASTER_KEY")
}

func TestLoad_MasterKeyWrongLength(t *testing.T) {
	t.Setenv("APP_MASTER_KEY", "deadbeef") // too short
	t.Setenv("APP_DB_DSN", "x")
	_, err := Load("")
	require.Error(t, err)
}