// Package config loads runtime configuration for the analytics worker.
package config

import (
	"fmt"
	"time"

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

type Config struct {
	HTTPAddr        string        `env:"WORKER_HTTP_ADDR"               envDefault:":4001"`
	LogLevel        string        `env:"WORKER_LOG_LEVEL"               envDefault:"info"`
	ShutdownTimeout time.Duration `env:"WORKER_SHUTDOWN_TIMEOUT_SECONDS" envDefault:"60s"`

	// river queue tuning
	MaxWorkers          int           `env:"WORKER_MAX_WORKERS"           envDefault:"50"`
	ComputeTraitsEvery  time.Duration `env:"WORKER_COMPUTE_TRAITS_EVERY"  envDefault:"1h"`
	RefreshSegmentEvery time.Duration `env:"WORKER_REFRESH_SEGMENT_EVERY" envDefault:"1h"`

	// Shared infra ----------------------------------------------------------
	PostgresDSN string `env:"POSTGRES_DSN,required"`
	RedisAddr   string `env:"REDIS_ADDR" envDefault:"localhost:6379"`

	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"`
}

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