package config_test

import (
	"testing"
	"time"

	"github.com/shcizo/package-updater/internal/config"
	"github.com/stretchr/testify/require"
)

func TestLoad_RequiresAPIKey(t *testing.T) {
	t.Setenv("UPDATER_API_KEY", "")
	_, err := config.Load()
	require.Error(t, err)
	require.Contains(t, err.Error(), "UPDATER_API_KEY")
}

func TestLoad_AppliesDefaults(t *testing.T) {
	t.Setenv("UPDATER_API_KEY", "secret")
	t.Setenv("STACKS_ROOT", "")
	t.Setenv("PORT", "")
	t.Setenv("LOG_LEVEL", "")
	t.Setenv("UPDATE_TIMEOUT", "")
	t.Setenv("OPT_IN_LABEL", "")

	cfg, err := config.Load()
	require.NoError(t, err)
	require.Equal(t, "secret", cfg.APIKey)
	require.Equal(t, "/home/shcizo/self-hosted", cfg.StacksRoot)
	require.Equal(t, "8080", cfg.Port)
	require.Equal(t, "info", cfg.LogLevel)
	require.Equal(t, 5*time.Minute, cfg.UpdateTimeout)
	require.Equal(t, "se.shcizo.auto-update", cfg.OptInLabel)
}

func TestLoad_OverridesViaEnv(t *testing.T) {
	t.Setenv("UPDATER_API_KEY", "secret")
	t.Setenv("STACKS_ROOT", "/srv/stacks")
	t.Setenv("PORT", "9090")
	t.Setenv("LOG_LEVEL", "debug")
	t.Setenv("UPDATE_TIMEOUT", "30s")
	t.Setenv("OPT_IN_LABEL", "io.example.update")

	cfg, err := config.Load()
	require.NoError(t, err)
	require.Equal(t, "/srv/stacks", cfg.StacksRoot)
	require.Equal(t, "9090", cfg.Port)
	require.Equal(t, "debug", cfg.LogLevel)
	require.Equal(t, 30*time.Second, cfg.UpdateTimeout)
	require.Equal(t, "io.example.update", cfg.OptInLabel)
}

func TestLoad_InvalidTimeoutErrors(t *testing.T) {
	t.Setenv("UPDATER_API_KEY", "secret")
	t.Setenv("UPDATE_TIMEOUT", "not-a-duration")
	_, err := config.Load()
	require.Error(t, err)
	require.Contains(t, err.Error(), "UPDATE_TIMEOUT")
}