package app

import (
	"os"
	"path"

	"gopkg.in/yaml.v3"
)

type FeedCfg struct {
	Name    string `yaml:"name"`
	Channel string `yaml:"channel"`
	Rhash   string `yaml:"rhash"`
	Url     string `yaml:"url"`
	Cron    string `yaml:"cron"`
	Proxy   string `yaml:"proxy"`
}

type Config struct {
	Proxy         string `yaml:"proxy"`
	TelegramProxy string `yaml:"telegram_proxy"`
	//TODO: read from credential file
	TelegramAuthToken string    `yaml:"telegram_auth_token"`
	DataDir           string    `yaml:"data_dir"`
	LastSuccessPath   string    `yaml:"last_loaded_path"`
	DbDir             string    `yaml:"db_dir"`
	Feeds             []FeedCfg `yaml:"feeds"`
}

func ParseConfig(configPath string) (*Config, error) {

	cfg, err := os.ReadFile(configPath)
	if err != nil {
		return nil, err
	}

	c := Config{}
	err = yaml.Unmarshal(cfg, &c)

	if err != nil {
		return nil, err
	}

	if c.DataDir == "" {
		c.DataDir = "."
	}

	if c.LastSuccessPath == "" {
		c.LastSuccessPath = path.Join(c.DataDir, "last_success.yml")
	}

	if c.DbDir == "" {
		c.DbDir = path.Join(c.DataDir, "feed_data")
	}

	if c.Proxy != "" {
		if c.TelegramProxy == "" {
			c.TelegramProxy = c.Proxy
		}
		for i, _ := range c.Feeds {
			feedCfg := &c.Feeds[i]
			if feedCfg.Proxy == "" {
				feedCfg.Proxy = c.Proxy
			}
		}
	}

	if c.TelegramProxy == "NONE" {
		c.TelegramProxy = ""
	}

	for i, _ := range c.Feeds {
		feedCfg := &c.Feeds[i]
		if feedCfg.Proxy == "NONE" {
			feedCfg.Proxy = ""
		}
	}

	return &c, nil
}