package app

import (
	"os"
	"path/filepath"
)

type Config struct {
	CodexHome     string
	HTTPAddr      string
	WorkspaceRoot string
	StaticDir     string
}

func DefaultConfig() Config {
	httpAddr := envOrDefault("HTTP_ADDR", "127.0.0.1:18083")
	staticDir := os.Getenv("STATIC_DIR")
	workspaceRoot := envOrDefault("WORKSPACE_ROOT", ".")
	if codexHome := os.Getenv("CODEX_HOME"); codexHome != "" {
		return Config{
			CodexHome:     codexHome,
			HTTPAddr:      httpAddr,
			WorkspaceRoot: workspaceRoot,
			StaticDir:     staticDir,
		}
	}
	home, err := os.UserHomeDir()
	if err != nil {
		home = "."
	}
	return Config{
		CodexHome:     filepath.Join(home, ".codex"),
		HTTPAddr:      httpAddr,
		WorkspaceRoot: workspaceRoot,
		StaticDir:     staticDir,
	}
}

func envOrDefault(name string, fallback string) string {
	if value := os.Getenv(name); value != "" {
		return value
	}
	return fallback
}