package config

import (
	"fmt"
	"os"

	"gopkg.in/yaml.v3"
)

type Config struct {
	Server  ServerConfig  `yaml:"server"`
	Database DatabaseConfig `yaml:"database"`
	Youdao  YoudaoConfig  `yaml:"youdao"`
	Audio   AudioConfig   `yaml:"audio"`
}

type ServerConfig struct {
	Host string `yaml:"host"`
	Port int    `yaml:"port"`
}

type DatabaseConfig struct {
	Host     string `yaml:"host"`
	Port     int    `yaml:"port"`
	User     string `yaml:"user"`
	Password string `yaml:"password"`
	Name     string `yaml:"name"`
	Charset  string `yaml:"charset"`
}

type YoudaoConfig struct {
	AppID     string `yaml:"app_id"`
	AppKey    string `yaml:"app_key"` // 兼容旧字段
	AppSecret string `yaml:"app_secret"`
}

type AudioConfig struct {
	Path string `yaml:"path"`
}

func (d *DatabaseConfig) DSN() string {
	return fmt.Sprintf("%s:%s@tcp(%s:%d)/%s?charset=%s&parseTime=True&loc=Local",
		d.User, d.Password, d.Host, d.Port, d.Name, d.Charset)
}

var AppConfig *Config

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

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

	AppConfig = &cfg
	return &cfg, nil
}