package config

import (
	"fmt"

	"github.com/spf13/viper"
)

type Config struct {
	Server   ServerConfig
	MySQL    MySQLConfig
	Redis    RedisConfig
	Telegram TelegramConfig
	LLM      LLMConfig
	Serper   SerperConfig
	GitHub   GitHubConfig
}

type ServerConfig struct {
	Port int
}

type MySQLConfig struct {
	Host     string
	Port     int
	User     string
	Password string
	Database string
}

type RedisConfig struct {
	Host     string
	Port     int
	Password string
	DB       int
}

type TelegramConfig struct {
	AppID    int        `mapstructure:"app_id"`
	AppHash  string     `mapstructure:"app_hash"`
	Accounts []TGAccount
}

type TGAccount struct {
	Phone       string
	SessionFile string `mapstructure:"session_file"`
}

type LLMConfig struct {
	Provider string
	BaseURL  string `mapstructure:"base_url"`
	APIKey   string `mapstructure:"api_key"`
	Model    string
	Timeout  string
}

type SerperConfig struct {
	APIKey         string `mapstructure:"api_key"`
	ResultsPerPage int    `mapstructure:"results_per_page"`
	MaxPages       int    `mapstructure:"max_pages"`
}

type GitHubConfig struct {
	Token string
}

var global *Config

func Load(path string) (*Config, error) {
	v := viper.New()
	v.SetConfigFile(path)
	v.SetConfigType("yaml")

	if err := v.ReadInConfig(); err != nil {
		return nil, fmt.Errorf("read config file: %w", err)
	}

	cfg := &Config{}
	if err := v.Unmarshal(cfg); err != nil {
		return nil, fmt.Errorf("unmarshal config: %w", err)
	}

	global = cfg
	return cfg, nil
}

func Get() *Config {
	return global
}