Allow only block messages

[fGrennon]

I'm trying to send a message using only blocks, but the action don't accept this. Have an default to fields, text, title, footer and authors.

The message structure don't allow the blocks inside the message, always the blocks push at the end of the message.

slack/src/slack.ts

Lines 229 to 269 in c97e3fd

	const pretextTemplate = Handlebars.compile(opts?.pretext || '')
	const titleTemplate = Handlebars.compile(opts?.title || '')
	const defaultText = `${
	'*<{{{workflowUrl}}}|Workflow _{{workflow}}_ ' +
	'job _{{jobName}}_ triggered by _{{eventName}}_ is _{{jobStatus}}_>* ' +
	'for <{{refUrl}}|`{{ref}}`>\n'
	}${description ? '<{{diffUrl}}|`{{diffRef}}`> - {{{description}}}' : ''}`
	const textTemplate = Handlebars.compile(message || opts?.text || defaultText)
	const defaultFallback = `[GitHub]: [{{repositoryName}}] {{workflow}} {{eventName}} ${
	action ? '{{action}} ' : ''
	}{{jobStatus}}`
	const fallbackTemplate = Handlebars.compile(opts?.fallback || defaultFallback)
	const defaultFields = Object.entries(jobSteps).length
	? [
	{
	title: 'Job Steps',
	value: '{{#each jobSteps}}{{icon this.outcome}} {{@key}}\n{{~/each}}',
	short: false,
	if: 'always()'
	}
	]
	: []
	const filteredFields: object[] = []
	for (const field of opts?.fields || defaultFields) {
	const field_if = field?.if || 'always()'
	if (field_if === 'always()' || field_if.startsWith(jobStatus.toLowerCase())) {
	filteredFields.push({
	title: field.title,
	value: field.value,
	short: JSON.parse(field.short.toString())
	})
	}
	}
	const fieldsTemplate = Handlebars.compile(JSON.stringify(filteredFields))
	const defaultFooter = '<{{repositoryUrl}}|{{repositoryName}}> #{{runNumber}}'
	const footerTemplate = Handlebars.compile(opts?.footer || defaultFooter)

slack/src/slack.ts

Lines 334 to 359 in c97e3fd

	const attachments: MessageAttachment[] = [
	{
	mrkdwn_in: ['pretext' as const, 'text' as const, 'fields' as const],
	color: jobColor(jobStatus, opts?.colors),
	pretext,
	author_name: sender?.login,
	author_link: sender?.html_url,
	author_icon: sender?.avatar_url,
	title,
	title_link: opts?.title_link,
	text,
	fields,
	fallback,
	footer,
	footer_icon: DEFAULT_FOOTER_ICON,
	ts: ts.toString()
	}
	]
	if (opts?.blocks) {
	attachments.push({
	color: jobColor(jobStatus, opts?.colors),
	fallback,
	blocks
	})
	}

The feature i propose is omit the default values and only build the message with blocks.

[satterly]

If you create a PR for this proposal I'll review it. Thanks.

[GroovinChip]

@satterly doesn't look like the author is following up on this, would the team consider implementing it?