package main

import (
	"fmt"
	"os"
	"path/filepath"

	"gopkg.in/yaml.v3"
)

// Config holds the dashboard configuration
type Config struct {
	PollInterval int `yaml:"poll_interval"` // in seconds
	Local        struct {
		Path string `yaml:"path"`
	} `yaml:"local"`
	Remote []RemoteConfig `yaml:"remote"`
}

// RemoteConfig holds SSH connection info for a remote machine
type RemoteConfig struct {
	Host string `yaml:"host"`
	User string `yaml:"user"`
	Path string `yaml:"path"`
	Port int    `yaml:"port"`
}

func defaultConfig() Config {
	home, _ := os.UserHomeDir()
	return Config{
		PollInterval: 2,
		Local: struct {
			Path string `yaml:"path"`
		}{
			Path: filepath.Join(home, ".pi", "agent", "dashboard"),
		},
	}
}

func loadConfig(path string) (Config, error) {
	cfg := defaultConfig()

	data, err := os.ReadFile(path)
	if err != nil {
		if os.IsNotExist(err) {
			return cfg, nil // use defaults
		}
		return cfg, fmt.Errorf("reading config: %w", err)
	}

	if err := yaml.Unmarshal(data, &cfg); err != nil {
		return cfg, fmt.Errorf("parsing config: %w", err)
	}

	return cfg, nil
}