Files
wp-healthcheck/includes/class-wph-step.php
Steve Hanlon 0052005de1 Email delivery test step + step-form extension point
Demonstrates the drop-in pattern: adding a step with a form is a single
new file under includes/steps/, plus one small extension to the base
abstraction.

WPH_Step gains:
- render_extra($session_state) — emit extra HTML inside the step card
- handle_action($name, $input) — handle a step-specific POST and
  return a finding to record

New generic admin-post handler wph_step_action routes form submissions
to the matching step's handle_action() with nonce verification.

The email step (includes/steps/115-email.php):
- Detects 7 known SMTP plugins, surfaces default From address
- Renders a To: input prefilled with the current admin's email
- Sends via wp_mail() with wp_mail_failed capture so failures show the
  underlying error
- Records the outcome as a 'last_send' finding so it appears on the
  step card, in the summary, and in the downloadable report
2026-06-11 18:45:47 +01:00

76 lines
3.1 KiB
PHP

<?php
if (!defined('ABSPATH')) exit;
/**
* Base class for a healthcheck step.
*
* Each step lives in its own file under includes/steps/ with a numeric prefix
* (e.g. 10-backup.php). The file returns an instance of a subclass of WPH_Step.
* Drop a new file in that directory and it shows up; delete a file and it
* disappears. The numeric prefix controls order so re-ordering is a rename.
*
* Stable string IDs (returned by id()) are stored in the session, so renaming
* the file does NOT lose data as long as id() stays the same.
*/
abstract class WPH_Step {
/** Stable identifier (lowercase slug). NEVER change once shipped. */
abstract public function id(): string;
/** Human-readable title shown in the UI and report. */
abstract public function title(): string;
/** Intro paragraph shown under the title (plain text or simple inline HTML). */
public function blurb(): string { return ''; }
/** Sub-items the technician should tick through (plain strings). */
public function sub_items(): array { return []; }
/** "Watch out for" callouts (plain strings). */
public function watch_outs(): array { return []; }
/**
* If this step has a stop/escalate condition (e.g. backup failed → stop),
* return the guidance string. Rendered as a banner when status=blocked.
*/
public function escalation(): ?string { return null; }
/**
* Phase 3 hook — return an array of findings for the technician to verify.
* Each finding: ['id'=>str, 'level'=>'ok'|'warn'|'bad'|'info', 'label'=>str, 'value'=>str, 'detail'=>str].
* Override in subclasses. Default returns nothing.
*
* @return array<int,array<string,string>>
*/
public function autocheck(array $session_state): array { return []; }
/** Convenience finding builder for subclasses. */
protected function finding(string $id, string $level, string $label, string $value = '', string $detail = ''): array {
if (!in_array($level, ['ok', 'warn', 'bad', 'info'], true)) $level = 'info';
return compact('id', 'level', 'label', 'value', 'detail');
}
/** Returns true if any of this step's automation is implemented. Override or rely on autocheck() returning [] by default. */
public function has_autocheck(): bool {
$r = new ReflectionMethod($this, 'autocheck');
return $r->getDeclaringClass()->getName() !== WPH_Step::class;
}
/**
* Optional: render extra UI inside this step's card (forms, inputs, etc.).
* Default: nothing. Override when the step needs interactive controls
* beyond the standard status + notes pattern.
*/
public function render_extra(array $session_state): void {}
/**
* Optional: handle a step-specific POST (submitted from a form rendered by
* render_extra). Return a finding to append to the autocheck list, or null
* to do nothing.
*
* @param string $action_name name from the form's step_action field
* @param array<string,mixed>$input $_POST contents (sanitised by caller)
*/
public function handle_action(string $action_name, array $input): ?array { return null; }
}