main.go

// Copyright 2023 Adam Chalkley
//
// https://github.com/atc0005/go-teams-notify
//
// Licensed under the MIT License. See LICENSE file in the project root for
// full license information.

/*
This example uses a single "button" to illustrate toggling visibility for a
"details" text block.

While this example aims to showcase one or more specific features it may not
illustrate overall best practices.

Of note:

- default timeout
- package-level logging is disabled by default
- validation of known webhook URL prefixes is *enabled*

See https://docs.microsoft.com/en-us/adaptive-cards/authoring-cards/text-features
for the list of supported Adaptive Card text formatting options.
*/
package main

import (
	"log"
	"os"

	goteamsnotify "github.com/atc0005/go-teams-notify/v2"
	"github.com/atc0005/go-teams-notify/v2/adaptivecard"
)

func main() {

	// Initialize a new Microsoft Teams client.
	mstClient := goteamsnotify.NewTeamsClient()

	// Set webhook url.
	//
	// NOTE: This is for illustration purposes only. Best practice is to NOT
	// hardcode credentials of any kind.
	webhookUrl := "https://outlook.office.com/webhook/YOUR_WEBHOOK_URL_OF_TEAMS_CHANNEL"

	// Allow specifying webhook URL via environment variable, fall-back to
	// hard-coded value in this example file.
	expectedEnvVar := "WEBHOOK_URL"
	envWebhookURL := os.Getenv(expectedEnvVar)
	switch {
	case envWebhookURL != "":
		log.Printf(
			"Using webhook URL %q from environment variable %q\n\n",
			envWebhookURL,
			expectedEnvVar,
		)
		webhookUrl = envWebhookURL
	default:
		log.Println(expectedEnvVar, "environment variable not set.")
		log.Printf("Using hardcoded value %q as fallback\n\n", webhookUrl)
	}

	// Create blank card that we'll manually fill in.
	card := adaptivecard.NewCard()

	// First text block that we'll use as our header.
	headerTextBlock := adaptivecard.NewTitleTextBlock("Press the button to show details", false)

	// This element is intended to remain visible so we skip setting an ID
	// value. If we did want to change its visibility we would need to set a
	// unique ID value as shown below.
	//
	// headerTextBlock.ID = "headerBlock"

	detailsBlock := adaptivecard.NewHiddenTextBlock("Details text block content here", true)
	detailsBlock.ID = "detailsBlock"

	// This grouping is used for convenience.
	allTextBlocks := []adaptivecard.Element{
		headerTextBlock,
		detailsBlock,
	}

	if err := card.AddElement(true, allTextBlocks...); err != nil {
		log.Printf(
			"failed to add text blocks to card: %v",
			err,
		)
		os.Exit(1)
	}

	toggleButton := adaptivecard.NewActionToggleVisibility("Toggle!")
	if err := toggleButton.AddTargetElement(nil, detailsBlock); err != nil {
		log.Printf(
			"failed to add element ID to toggle button: %v",
			err,
		)
		os.Exit(1)
	}

	if err := card.AddAction(true, toggleButton); err != nil {
		log.Printf(
			"failed to add toggle button action to card: %v",
			err,
		)
		os.Exit(1)
	}

	// Create new Message using Card as input.
	msg, err := adaptivecard.NewMessageFromCard(card)
	if err != nil {
		log.Printf("failed to create message from card: %v", err)
		os.Exit(1)
	}

	// Send the message with default timeout/retry settings.
	if err := mstClient.Send(webhookUrl, msg); err != nil {
		log.Printf("failed to send message: %v", err)
		os.Exit(1)
	}

}