package config

import (
	"time"

	"github.com/spf13/viper"
)

type ServerConfig struct {
	Host         string        `mapstructure:"host"`
	Port         int           `mapstructure:"port"`
	Timeout      time.Duration `mapstructure:"timeout"`
	ReadTimeout  time.Duration `mapstructure:"read_timeout"`
	WriteTimeout time.Duration `mapstructure:"write_timeout"`
}

type DatabaseConfig struct {
	MongoDB MongoConfig `mapstructure:"mongodb"`
}

type MongoConfig struct {
	URI         string        `mapstructure:"uri"`
	Name        string        `mapstructure:"name"`
	Timeout     time.Duration `mapstructure:"timeout"`
	MaxPoolSize int           `mapstructure:"max_pool_size"`
}

type CacheConfig struct {
	Redis RedisConfig `mapstructure:"redis"`
}

type RedisConfig struct {
	Host     string `mapstructure:"host"`
	Port     int    `mapstructure:"port"`
	Password string `mapstructure:"password"`
	DB       int    `mapstructure:"db"`
	PoolSize int    `mapstructure:"pool_size"`
}

type LoggingConfig struct {
	Level  string        `mapstructure:"level"`
	Format string        `mapstructure:"format"`
	Output string        `mapstructure:"output"`
	File   LogFileConfig `mapstructure:"file"`
}

type LogFileConfig struct {
	Path       string `mapstructure:"path"`
	MaxSize    int    `mapstructure:"max_size"` // MB
	MaxBackups int    `mapstructure:"max_backups"`
	MaxAge     int    `mapstructure:"max_age"` // days
	Compress   bool   `mapstructure:"compress"`
}

type RateLimitConfig struct {
	RequestsPerMinute int `mapstructure:"requests_per_minute"`
	Burst             int `mapstructure:"burst"`
}

// LoadConfig loads configuration from file and environment variables
func LoadConfig[T any](path string, config T) (T, error) {
	viper.SetConfigName("config")
	viper.SetConfigType("yaml")
	viper.AddConfigPath(path)

	// Enable reading from environment variables
	viper.AutomaticEnv()

	// Read configuration file
	if err := viper.ReadInConfig(); err != nil {
		return config, err
	}

	if err := viper.Unmarshal(config); err != nil {
		return config, err
	}

	return config, nil
}