package models

import (
	"encoding/json"
	"os"
	"time"
)

const (
	ConfigPath = "config.json"
)

type Config struct {
	pathsConfig
	serverConfig
	lastFMConfig
	cacheConfig
}

type pathsConfig struct {
	PostsDir            string `json:"posts_dir"`
	AssetsDir           string `json:"assets_dir"`
	TemplatesDir        string `json:"templates_dir"`
	TemplatesExt        string `json:"templates_ext"`
	PostsMaxCountOnPage int    `json:"max_posts_per_page"`
}

type serverConfig struct {
	LocalIP      string `json:"local_ip"`
	LocalPort    string `json:"local_port"`
	ServerIP     string `json:"server_ip"`
	ServerPort   string `json:"server_port"`
	ServerDomain string `json:"server_domain"`
}

type lastFMConfig struct {
	LastFMUsername       string        `json:"lastfm_username"`
	LastFMToken          string        `json:"lastfm_token"`
	LastFMUpdateInterval time.Duration `json:"lastfm_update_interval"`
}

type cacheConfig struct {
	CacheLogInterval time.Duration `json:"cache_log_interval"`
}

func loadConfig(path string) (*Config, error) {
	data, err := os.ReadFile(path)
	if err != nil {
		return nil, err
	}

	var cfg Config
	if err := json.Unmarshal(data, &cfg); err != nil {
		return nil, err
	}

	return &cfg, nil
}