package config

import (
	"os"
	"testing"

	"github.com/rs/zerolog"
	"github.com/stretchr/testify/assert"
)

func TestGetConfig(t *testing.T) {
	// Set up test environment variables
	envVars := map[string]string{
		EnvLogLevel:        "debug",
		EnvRootPath:        ".",
		EnvNumWorkers:      "5",
		EnvWorkerBatchSize: "100",
		EnvMaxResponseSize: "1048576",
		EnvResponseTimeout: "30",
	}

	for k, v := range envVars {
		os.Setenv(k, v)
		defer os.Unsetenv(k)
	}

	// Get configuration
	config := GetConfig()

	// Assert configuration values
	assert.Equal(t, zerolog.DebugLevel, config.LogLevel)
	assert.Equal(t, ".", config.RootPath)
	assert.Equal(t, 5, config.NumOfWorkers)
	assert.Equal(t, 100, config.WorkerBatchSize)
	assert.Equal(t, 1048576, config.MaxResponseSize)
	assert.Equal(t, 30, config.ResponseTimeout)
}

func TestParsePositiveInt(t *testing.T) {
	tests := []struct {
		name    string
		input   string
		want    int
		wantErr bool
	}{
		{"valid positive", "42", 42, false},
		{"zero", "0", 0, true},
		{"negative", "-1", 0, true},
		{"invalid", "abc", 0, true},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got, err := parsePositiveInt(tt.input)
			if tt.wantErr {
				assert.Error(t, err)
			} else {
				assert.NoError(t, err)
				assert.Equal(t, tt.want, got)
			}
		})
	}
}