package config

import (
	"os"
	"strconv"
	"time"
)

type Config struct {
	RabbitURL       string
	InputQueue      string
	OutputExchange  string
	AnalyseQueue    string
	TaggingQueue    string
	InputExchange   string
	InputRoutingKey string
	Prefetch        int
	StatusQueue     string

	NexaraBaseURL string
	NexaraAPIKey  string
	NexaraModel   string
	NexaraTimeout time.Duration

	PromptsSource  string
	PromptsFile    string
	PromptsBaseURL string
	PromptsAPIKey  string
	PromptsSection int
}

func Load() Config {
	return Config{
		RabbitURL:       getEnv("RABBITMQ_URL", "amqp://guest:guest@localhost:5672/"),
		InputQueue:      getEnv("INPUT_QUEUE", "transcribe.tasks"),
		OutputExchange:  getEnv("OUTPUT_EXCHANGE", "transcription_done"),
		AnalyseQueue:    getEnv("ANALYSE_QUEUE", "analyse"),
		TaggingQueue:    getEnv("TAGGING_QUEUE", "tagging"),
		InputExchange:   getEnv("RABBITMQ_EXCHANGE", "audio_pipeline"),
		InputRoutingKey: getEnv("RABBITMQ_ROUTING_KEY", "audio.new"),
		Prefetch:        getInt("PREFETCH", 1),
		StatusQueue:     getEnv("STATUS_QUEUE", "pipeline.status"),

		NexaraBaseURL: getEnv("NEXARA_BASE_URL", "https://api.nexara.ru"),
		NexaraAPIKey:  os.Getenv("NEXARA_API_KEY"),
		NexaraModel:   getEnv("NEXARA_MODEL", "whisper-1"),
		NexaraTimeout: getDuration("NEXARA_TIMEOUT", 10*time.Minute),

		PromptsSource:  getEnv("PROMPTS_SOURCE", "static"),
		PromptsFile:    getEnv("PROMPTS_FILE", "/app/configs/prompts.json"),
		PromptsBaseURL: os.Getenv("PROMPTS_BASE_URL"),
		PromptsAPIKey:  os.Getenv("PROMPTS_API_KEY"),
		PromptsSection: getInt("PROMPTS_SECTION", 1),
	}
}

func getEnv(key, def string) string {
	if v := os.Getenv(key); v != "" {
		return v
	}
	return def
}

func getInt(key string, def int) int {
	if v := os.Getenv(key); v != "" {
		if i, err := strconv.Atoi(v); err == nil {
			return i
		}
	}
	return def
}

func getDuration(key string, def time.Duration) time.Duration {
	if v := os.Getenv(key); v != "" {
		if d, err := time.ParseDuration(v); err == nil {
			return d
		}
	}
	return def
}