package utils

import (
	"fmt"
	"os"

	"github.com/9seconds/mtg/v2/essentials"
	"github.com/9seconds/mtg/v2/internal/config"
)

func readCustomDC(cfg *config.Config) {
	if len(cfg.DCs.DC1) > 0 {
		var ips []string
		for _, addr := range cfg.DCs.DC1 {
			ips = append(ips, addr.Value)
		}
		essentials.TelegramCoreAddresses[1] = ips
	}
	if len(cfg.DCs.DC2) > 0 {
		var ips []string
		for _, addr := range cfg.DCs.DC2 {
			ips = append(ips, addr.Value)
		}
		essentials.TelegramCoreAddresses[2] = ips
	}
	if len(cfg.DCs.DC3) > 0 {
		var ips []string
		for _, addr := range cfg.DCs.DC3 {
			ips = append(ips, addr.Value)
		}
		essentials.TelegramCoreAddresses[3] = ips
	}
	if len(cfg.DCs.DC4) > 0 {
		var ips []string
		for _, addr := range cfg.DCs.DC4 {
			ips = append(ips, addr.Value)
		}
		essentials.TelegramCoreAddresses[4] = ips
	}
	if len(cfg.DCs.DC5) > 0 {
		var ips []string
		for _, addr := range cfg.DCs.DC5 {
			ips = append(ips, addr.Value)
		}
		essentials.TelegramCoreAddresses[5] = ips
	}
	if len(cfg.DCs.DC203) > 0 {
		var ips []string
		for _, addr := range cfg.DCs.DC203 {
			ips = append(ips, addr.Value)
		}
		essentials.TelegramCoreAddresses[203] = ips
	}

	if len(cfg.DCs.DC10001) > 0 {
		var ips []string
		for _, addr := range cfg.DCs.DC10001 {
			ips = append(ips, addr.Value)
		}
		essentials.TelegramCoreAddresses[10001] = ips
	}
	if len(cfg.DCs.DC10002) > 0 {
		var ips []string
		for _, addr := range cfg.DCs.DC10002 {
			ips = append(ips, addr.Value)
		}
		essentials.TelegramCoreAddresses[10002] = ips
	}
	if len(cfg.DCs.DC10003) > 0 {
		var ips []string
		for _, addr := range cfg.DCs.DC10003 {
			ips = append(ips, addr.Value)
		}
		essentials.TelegramCoreAddresses[10003] = ips
	}
}

func ReadConfig(path string) (*config.Config, error) {
	content, err := os.ReadFile(path)
	if err != nil {
		return nil, fmt.Errorf("cannot read config file: %w", err)
	}

	conf, err := config.Parse(content)
	if err != nil {
		return nil, fmt.Errorf("cannot parse config: %w", err)
	}

	if err := conf.Validate(); err != nil {
		return nil, fmt.Errorf("invalid config: %w", err)
	}

	readCustomDC(conf)

	return conf, nil
}