package webhookeverything

import (
	"fmt"
	"math/rand"
	"net/url"
	"path"

	"git.samuelpua.com/telboon/webhook-everything/backend/internal/telegrampackage"
)

func (env *Env) registerWebhookRaw(shortCode string, text string) (bool, *string) {
	commandSplitted := telegrampackage.ParseTelegramBotCommand(text)
	if len(commandSplitted) > 0 && commandSplitted[0] == "/register_webhook_raw" {
		newWebhookID := genWebhookCode(6)
		baseURL, _ := url.Parse(env.HostURL)
		baseURL.Path = path.Join(baseURL.Path, "webhook")
		baseURL.Path = path.Join(baseURL.Path, "routes")
		baseURL.Path = path.Join(baseURL.Path, newWebhookID)
		webhookURL := baseURL.String()

		var webhookRoute WebhookRoute
		webhookRoute.TelegramShortCode = shortCode
		webhookRoute.WebhookID = newWebhookID
		webhookRoute.WebhookType = "raw"
		env.DB.Create(&webhookRoute)

		responseText := fmt.Sprintf("Your generated webhook URL is: %s", webhookURL)
		return true, &responseText
	}
	return false, nil
}

func (env *Env) registerWebhookBody(shortCode string, text string) (bool, *string) {
	commandSplitted := telegrampackage.ParseTelegramBotCommand(text)
	if len(commandSplitted) > 0 && commandSplitted[0] == "/register_webhook_body" {
		newWebhookID := genWebhookCode(6)
		baseURL, _ := url.Parse(env.HostURL)
		baseURL.Path = path.Join(baseURL.Path, "webhook")
		baseURL.Path = path.Join(baseURL.Path, "routes")
		baseURL.Path = path.Join(baseURL.Path, newWebhookID)
		webhookURL := baseURL.String()

		var webhookRoute WebhookRoute
		webhookRoute.TelegramShortCode = shortCode
		webhookRoute.WebhookID = newWebhookID
		webhookRoute.WebhookType = "body"
		env.DB.Create(&webhookRoute)

		responseText := fmt.Sprintf("Your generated webhook URL is: %s", webhookURL)
		return true, &responseText
	}
	return false, nil
}

func (env *Env) displayHelp(shortCode string, text string) (bool, *string) {
	commandSplitted := telegrampackage.ParseTelegramBotCommand(text)
	if len(commandSplitted) > 0 && commandSplitted[0] == "/help" {
		responseText := "/register -> Register for a chat ID\n/register_webhook_raw -> Register for a web hook for raw requests\n/register_webhook_body -> Register for a web hook for requests body\n/show -> Show existing webhooks"
		return true, &responseText
	}
	return false, nil
}

func (env *Env) showRoutes(shortCode string, text string) (bool, *string) {
	commandSplitted := telegrampackage.ParseTelegramBotCommand(text)
	if len(commandSplitted) > 0 && commandSplitted[0] == "/show" {
		var results []WebhookRoute
		env.DB.Where(&WebhookRoute{TelegramShortCode: shortCode}).Find(&results)
		responseText := "The following webhook URLs were previously registered:"
		for _, curr := range results {
			baseURL, _ := url.Parse(env.HostURL)
			baseURL.Path = path.Join(baseURL.Path, "webhook")
			baseURL.Path = path.Join(baseURL.Path, "routes")
			baseURL.Path = path.Join(baseURL.Path, curr.WebhookID)
			webhookURL := baseURL.String()
			responseText += fmt.Sprintf("%s (%s)\n", webhookURL, curr.WebhookType)
		}
		return true, &responseText
	}
	return false, nil
}

func genWebhookCode(n int) string {
	var letters = []rune("abcdefghijklmnopqrstuvwxyz1234567890")
	runeCode := make([]rune, n)
	for i := range runeCode {
		runeCode[i] = letters[rand.Intn(len(letters))]
	}
	return string(runeCode)
}