package kafka

import (
	"strings"
	"time"

	"github.com/fiskerinc/cloud-services/pkg/utils/envtool"
	"github.com/twmb/franz-go/pkg/kgo"
)

// Config holds kafka connection configuration
type Config struct {
	Brokers           []string
	SecurityProtocol  string
	SessionTimeout    time.Duration
	HeartbeatInterval time.Duration
}

// LoadConfig loads kafka configuration from environment
func LoadConfig() Config {
	hosts := envtool.GetEnv("KAFKA_HOSTS", "localhost:9092")
	brokers := strings.Split(hosts, ",")
	for i := range brokers {
		brokers[i] = strings.TrimSpace(brokers[i])
	}

	return Config{
		Brokers:           brokers,
		SecurityProtocol:  envtool.GetEnv("KAFKA_SECURITY_PROTOCOL", "plaintext"),
		SessionTimeout:    time.Duration(envtool.GetEnvInt("KAFKA_SESSION_TIMEOUT_MS", 45000)) * time.Millisecond,
		HeartbeatInterval: time.Duration(envtool.GetEnvInt("KAFKA_HEARTBEAT_INTERVAL_MS", 3000)) * time.Millisecond,
	}
}

// buildClientOpts creates common kgo.Opt slice from config
func buildClientOpts(cfg Config) []kgo.Opt {
	opts := []kgo.Opt{
		kgo.SeedBrokers(cfg.Brokers...),
	}

	// SASL can be added here if needed in the future
	// For now we use PLAINTEXT (no auth) for the mini cluster

	return opts
}