package config

import (
	"log"
	"os"
	"strconv"

	"github.com/joho/godotenv"
)

type DHConfig struct {
	DiskFetchFrequency  int `json:"diskFetchFrequency"`
	MemoryDumpFrequency int `json:"memoryDumpFrequency"`
	MaxHistoryAge       int `json:"maxHistoryAge"`
	Listen              string
}

func GetConfiguration() DHConfig {
	// Load .env file if it exists
	if err := godotenv.Load(); err != nil {
		log.Println("No .env file found")
	}

	config := DHConfig{
		DiskFetchFrequency:  5,       // default value
		MemoryDumpFrequency: 60,      // default value
		MaxHistoryAge:       2592000, // default value

		Listen: ":8080",
	}

	if val, exists := os.LookupEnv("DISK_FETCH_FREQUENCY"); exists {
		if intValue, err := strconv.Atoi(val); err == nil {
			config.DiskFetchFrequency = intValue
		}
	}

	if val, exists := os.LookupEnv("MEMORY_DUMP_FREQUENCY"); exists {
		if intValue, err := strconv.Atoi(val); err == nil {
			config.MemoryDumpFrequency = intValue
		}
	}

	if val, exists := os.LookupEnv("MAX_HISTORY_AGE"); exists {
		if intValue, err := strconv.Atoi(val); err == nil {
			config.MaxHistoryAge = intValue
		}
	}

	if val, exists := os.LookupEnv("LISTEN"); exists {
		config.Listen = val
	}

	return config
}