<?php

declare(strict_types=1);

namespace Sarcio\WordPress\Admin;

use Sarcio\WordPress\Connect;
use Sarcio\WordPress\Inbox\Routes as InboxRoutes;
use Sarcio\WordPress\InlineJson;
use Sarcio\WordPress\Options;
use WP_REST_Request;
use WP_REST_Response;
use WP_REST_Server;

/** The optional question when Sarcio is deactivated. Nothing is sent unless the person presses Send and deactivate. */
final class DeactivateFeedback
{
    public const CAPABILITY = 'activate_plugins';
    public const DETAILS_MAX = 1000;

    private const SCRIPT = 'sarcio-deactivate';

    public function __construct(private readonly string $basename)
    {
    }

    /** @return array<string,string> */
    public static function reasons(): array
    {
        return [
            'couldnt-start' => __('I couldn\'t see how to get started', 'sarcio'),
            'not-what-i-need' => __('It didn\'t do what I needed', 'sarcio'),
            'no-account' => __('I didn\'t want to create an account', 'sarcio'),
            'too-expensive' => __('It costs too much', 'sarcio'),
            'broke-something' => __('Something on my site broke', 'sarcio'),
            'just-testing' => __('I was only trying it out', 'sarcio'),
            'other' => __('Something else', 'sarcio'),
        ];
    }

    /** @return array<string,mixed>|null */
    public static function payload(string $reason, string $details, bool $connected): ?array
    {
        if (!array_key_exists($reason, self::reasons())) {
            return null;
        }
        $details = trim(sanitize_textarea_field($details));
        $payload = ['reason' => $reason];
        if ($details !== '') {
            $payload['details'] = mb_substr($details, 0, self::DETAILS_MAX);
        }
        return $payload + [
            'pluginVersion' => SARCIO_WP_VERSION,
            'wpVersion' => (string) get_bloginfo('version'),
            'connected' => $connected,
            'locale' => (string) get_locale(),
        ];
    }

    /** @param array<string,mixed> $payload */
    public static function send(array $payload): void
    {
        wp_remote_post(Options::apiUrl() . '/api/plugin-feedback', [
            'blocking' => false,
            'body' => (string) wp_json_encode($payload),
            'headers' => ['Content-Type' => 'application/json'],
            'redirection' => 0,
            'timeout' => 3,
        ]);
    }

    public function register(): void
    {
        add_action('admin_enqueue_scripts', [$this, 'enqueue']);
        add_action('admin_footer-plugins.php', [$this, 'renderDialog']);
        add_action('rest_api_init', [$this, 'registerRoutes']);
    }

    public function registerRoutes(): void
    {
        register_rest_route(InboxRoutes::NAMESPACE, '/feedback/deactivate', [
            'args' => [
                'details' => ['type' => 'string'],
                'reason' => ['enum' => array_keys(self::reasons()), 'required' => true, 'type' => 'string'],
            ],
            'callback' => [$this, 'submit'],
            'methods' => WP_REST_Server::CREATABLE,
            'permission_callback' => static fn (): bool => current_user_can(self::CAPABILITY),
        ]);
    }

    public function submit(WP_REST_Request $request): WP_REST_Response
    {
        $payload = self::payload((string) $request->get_param('reason'), (string) $request->get_param('details'), Connect::connected());
        if ($payload === null) {
            return new WP_REST_Response(['message' => __('Choose one of the answers.', 'sarcio')], 400);
        }
        self::send($payload);
        return new WP_REST_Response(null, 204);
    }

    public function enqueue(string $hook): void
    {
        if ($hook !== 'plugins.php' || !current_user_can(self::CAPABILITY)) {
            return;
        }
        wp_add_inline_style('common', self::asset('css/deactivate.css'));
        wp_register_script(self::SCRIPT, false, [], SARCIO_WP_VERSION, true);
        wp_enqueue_script(self::SCRIPT);
        wp_add_inline_script(self::SCRIPT, 'var sarcioDeactivate=' . InlineJson::encode([
            'nonce' => wp_create_nonce('wp_rest'),
            'plugin' => $this->basename,
            'url' => esc_url_raw(rest_url(InboxRoutes::NAMESPACE . '/feedback/deactivate')),
        ]) . ';', 'before');
        wp_add_inline_script(self::SCRIPT, self::asset('js/deactivate.js'));
    }

    public function renderDialog(): void
    {
        if (!current_user_can(self::CAPABILITY)) {
            return;
        }
        echo '<dialog id="sarcio-deactivate" class="sarcio-deactivate" aria-labelledby="sarcio-deactivate-title" aria-describedby="sarcio-deactivate-note">';
        echo '<div class="sarcio-deactivate-body">';
        echo '<h2 id="sarcio-deactivate-title">' . esc_html__('Before you go, what didn\'t work?', 'sarcio') . '</h2>';
        echo '<fieldset><legend class="screen-reader-text">' . esc_html__('Before you go, what didn\'t work?', 'sarcio') . '</legend>';
        foreach (self::reasons() as $key => $label) {
            printf(
                '<p><label><input type="radio" name="sarcio-deactivate-reason" value="%s" /> %s</label></p>',
                esc_attr($key),
                esc_html($label),
            );
        }
        echo '</fieldset>';
        printf(
            '<p><label for="sarcio-deactivate-details">%s</label><textarea id="sarcio-deactivate-details" name="sarcio-deactivate-details" rows="3" maxlength="%d"></textarea></p>',
            esc_html__('Anything else? (optional)', 'sarcio'),
            (int) self::DETAILS_MAX,
        );
        echo '<p id="sarcio-deactivate-note" class="description">' . esc_html__('Sending this shares only your answer, the plugin and WordPress versions, the language of the site and whether it was connected. No address, name or email.', 'sarcio') . '</p>';
        echo '<div class="sarcio-deactivate-actions">';
        echo '<button type="button" class="button button-primary" data-sarcio-send disabled>' . esc_html__('Send and deactivate', 'sarcio') . '</button>';
        echo '<button type="button" class="button" data-sarcio-skip>' . esc_html__('Skip and deactivate', 'sarcio') . '</button>';
        echo '</div></div></dialog>';
    }

    /** The plugin's own bundled asset, printed inline so it works wherever the plugin is installed. */
    private static function asset(string $file): string
    {
        $path = dirname(__DIR__, 2) . '/assets/' . $file;
        if (!is_readable($path)) {
            return '';
        }
        // phpcs:ignore WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents -- the plugin's own bundled file.
        $source = file_get_contents($path);
        return is_string($source) ? $source : '';
    }
}