package config

import (
	"os"
	"strconv"

	"github.com/joho/godotenv"
	log "github.com/nacorid/logger"
)

type Config struct {
	ListenAddress         string
	ListenPort            string
	UnixSocketPath        string
	UnixSocketPermissions os.FileMode
	DatabaseURL           string
	ActivityPubHost       string
	ActivityPubToken      string
	BlueskyDID            string
	BlueskyAppPassword    string
	BlueskyHost           string
	OllamaHost            string
	X402FacilitatorURL    string
	X402WalletAddress     string
	ApiKey                string
	ApiSecret             string
	LogFile               string
	ActiveNetworks        string
}

func Load() *Config {
	if err := godotenv.Load(); err != nil {
		log.Debug("No .env file found, reading from environment")
	}

	permsStr := getEnv("UNIX_SOCKET_PERMISSIONS", "0660")
	perms, err := strconv.ParseUint(permsStr, 8, 32)
	if err != nil {
		log.Fatal("Invalid UNIX_SOCKET_PERMISSIONS", "error", err)
	}
	return &Config{
		ListenAddress:         getEnv("SERVER_ADDRESS", "127.0.0.1"),
		ListenPort:            getEnv("SERVER_PORT", "8080"),
		UnixSocketPermissions: os.FileMode(perms),
		DatabaseURL:           getEnv("GOOSE_DBSTRING", "postgres:///mcpserver"),
		ActivityPubHost:       getEnv("AP_HOST", "https://mastodon.social"),
		ActivityPubToken:      getEnv("AP_ACCESS_TOKEN", ""),
		BlueskyDID:            getEnv("BLUESKY_DID", ""),
		BlueskyAppPassword:    getEnv("BLUESKY_APP_PASSWORD", ""),
		BlueskyHost:           getEnv("BLUESKY_HOST", "https://bsky.social"),
		OllamaHost:            getEnv("OLLAMA_HOST", "http://localhost:11434"),
		X402FacilitatorURL:    getEnv("X402_FACILITATOR_URL", "https://facilitator.x402.rs"),
		X402WalletAddress:     getEnv("X402_WALLET_ADDRESS", ""),
		ApiKey:                getEnv("CDP_API_KEY_ID", ""),
		ApiSecret:             getEnv("CDP_API_SECRET", ""),
		LogFile:               getEnv("LOG_FILE", "/var/log/mcpserver/output.log"),
		ActiveNetworks:        getEnv("ACTIVE_NETWORKS", "base"),
	}
}

func getEnv(key, fallback string) string {
	if value, ok := os.LookupEnv(key); ok {
		return value
	}
	if fallback == "" {
		log.Fatal("Environment variable is not set", "key", key)
	}
	return fallback
}