<?php

namespace AIBP\Cron;

if ( ! defined( 'ABSPATH' ) ) {
    exit();
}

use AIBP\Agents\Agent;

class Cron {

    public function __construct() {
        add_action( 'aibp_daily_check', [ $this, 'daily_check' ] );
        add_action( 'aibp_run_agent', [ $this, 'run_agent' ], 10, 1 );
        add_action( 'aibp_cleanup_logs', [ $this, 'cleanup_logs' ] );

        add_action( 'init', [ $this, 'schedule_events' ] );
        add_action( 'delete_post', [ $this, 'on_agent_deleted' ] );
    }

    public function schedule_events(): void {
        // Single daily check event.
        if ( ! wp_next_scheduled( 'aibp_daily_check' ) ) {
            wp_schedule_event( time(), 'daily', 'aibp_daily_check' );
        }

        // Weekly log cleanup.
        if ( ! wp_next_scheduled( 'aibp_cleanup_logs' ) ) {
            wp_schedule_event( time(), 'weekly', 'aibp_cleanup_logs' );
        }
    }

    public function daily_check(): void {
        $agents = Agent::get_all( [
            'meta_key'   => 'aibp_status',
            'meta_value' => 'active',
        ] );

        foreach ( $agents as $agent ) {
            if ( $agent->should_run_now() ) {
                $this->run_agent( $agent->get_id() );
            }
        }
    }

    public function run_agent( int $agent_id ): void {
        $agent = new Agent( $agent_id );
        if ( ! $agent->exists() || ! $agent->is_active() ) {
            return;
        }

        try {
            $post_id = \AIBP\AI\AI::generate_post( $agent_id );
            if ( $post_id ) {
                $agent->increment_run();
            }
        } catch ( \Exception $e ) {
            \AIBP\Log\ActivityLog::log( $agent_id, 'error', $e->getMessage() );
        }
    }

    public function on_agent_deleted( int $post_id ): void {
        if ( get_post_type( $post_id ) === 'aibp_events' ) {
            // No per-agent cron to clear in v2.0 — using global daily check.
        }
    }

    public function cleanup_logs(): void {
        $options    = get_option( 'aibp_settings', [] );
        $retention  = absint( $options['log_retention'] ?? 90 );
        \AIBP\Log\ActivityLog::delete_old_logs( $retention );
    }

    public static function run_now( int $agent_id ): void {
        $agent = new Agent( $agent_id );
        if ( ! $agent->exists() ) {
            return;
        }

        try {
            $post_id = \AIBP\AI\AI::generate_post( $agent_id );
            if ( $post_id ) {
                $agent->increment_run();
            }
        } catch ( \Exception $e ) {
            \AIBP\Log\ActivityLog::log( $agent_id, 'error', $e->getMessage() );
            throw $e;
        }
    }
}