package config

import (
	"fmt"

	"github.com/spf13/viper"
)

type Config struct {
	Server ServerConfig `mapstructure:"server"`
	MySQL  MySQLConfig  `mapstructure:"mysql"`
	Redis  RedisConfig  `mapstructure:"redis"`
	Log    LogConfig    `mapstructure:"log"`
	Cron   CronConfig   `mapstructure:"cron"`
}

type ServerConfig struct {
	Port         int    `mapstructure:"port"`
	ReadTimeout  string `mapstructure:"readTimeout"`
	WriteTimeout string `mapstructure:"writeTimeout"`
}

type MySQLConfig struct {
	DSN string `mapstructure:"dsn"`
}

type RedisConfig struct {
	Addr     string `mapstructure:"addr"`
	Password string `mapstructure:"password"`
	DB       int    `mapstructure:"db"`
}

type LogConfig struct {
	Level  string `mapstructure:"level"`
	Format string `mapstructure:"format"`
}

type CronConfig struct {
	Enabled  bool   `mapstructure:"enabled"`
	Timezone string `mapstructure:"timezone"`
}

func Load() (*Config, error) {
	v := viper.New()
	v.SetConfigName("application")
	v.SetConfigType("yaml")
	v.AddConfigPath(".")

	v.SetEnvPrefix("APP")
	v.AutomaticEnv()

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

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

	return &cfg, nil
}