// Package config loads bulker runtime config from env.
package config

import (
	"fmt"
	"time"

	"github.com/caarlos0/env/v11"
)

type Config struct {
	HTTPAddr        string        `env:"BULKER_HTTP_ADDR"                  envDefault:":3042"`
	LogLevel        string        `env:"BULKER_LOG_LEVEL"                  envDefault:"info"`
	KafkaGroup      string        `env:"BULKER_KAFKA_GROUP"                envDefault:"bulker"`
	BatchSize       int           `env:"BULKER_BATCH_SIZE"                 envDefault:"1000"`
	BatchInterval   time.Duration `env:"BULKER_BATCH_INTERVAL_SECONDS"     envDefault:"5s"`
	ShutdownTimeout time.Duration `env:"BULKER_SHUTDOWN_TIMEOUT_SECONDS"   envDefault:"60s"`

	KafkaBrokers     []string `env:"KAFKA_BROKERS" envSeparator:"," envDefault:"localhost:9092"`
	KafkaTopicIngest string   `env:"KAFKA_TOPIC_INGEST" envDefault:"events.ingest"`
	KafkaTopicDLQ    string   `env:"KAFKA_TOPIC_DLQ"    envDefault:"events.dlq"`

	ClickHouseAddr     string `env:"CLICKHOUSE_ADDR"     envDefault:"localhost:9000"`
	ClickHouseDB       string `env:"CLICKHOUSE_DB"       envDefault:"cdp"`
	ClickHouseUser     string `env:"CLICKHOUSE_USER"     envDefault:"default"`
	ClickHousePassword string `env:"CLICKHOUSE_PASSWORD" envDefault:""`
}

func Load() (*Config, error) {
	cfg := &Config{}
	if err := env.Parse(cfg); err != nil {
		return nil, fmt.Errorf("config load: %w", err)
	}
	return cfg, nil
}