package config

import (
	"fmt"
	"os"
	"ssender/internal/models"

	"gopkg.in/yaml.v2"
)

func NewConfig(configPath string) (*models.Config, error) {
	// Create config structure
	config := &models.Config{}

	// Open config file
	file, err := os.Open(configPath)
	if err != nil {
		return nil, err
	}
	defer file.Close()

	// Init new YAML decode
	d := yaml.NewDecoder(file)

	// Start YAML decoding from file
	if err := d.Decode(config); err != nil {
		return nil, err
	}

	// Validate required fields
	if config.Dbpath == "" {
		return nil, fmt.Errorf("dbpath is required in config")
	}
	if config.Telegram.Send && (config.Telegram.Token == "" || config.Telegram.ChatId == 0) {
		return nil, fmt.Errorf("telegram token and chatid are required when send is enabled")
	}
	if config.VK.Send && (config.VK.Token == "" || config.VK.OwnerId == 0) {
		return nil, fmt.Errorf("vk token and ownerid are required when send is enabled")
	}

	return config, nil
}