<?php
// ============================================================
// schedule_manager.php
// Creates and schedules tasks for the bots
// ============================================================

require_once __DIR__ . '/../core/bootstrap.php';
require_once __DIR__ . '/gemini_comment_generator.php';

class ScheduleManager {
    private $con;

    public function __construct() {
        $this->con = Database::get('main');
    }

    /**
     * Create a new task and optionally generate a comment for it using Gemini.
     * 
     * @param string $platform 'facebook' or 'instagram'
     * @param string $type 'join_group', 'read_posts', 'post_comment', 'share_link'
     * @param string|null $targetUrl The group or post URL
     * @param string|null $promptContext Context for Gemini
     * @param int|null $accountId Specific account ID or null for any available
     * @param int $delayMinutes How many minutes to delay this task
     */
    public function scheduleTask($platform, $type, $targetUrl = null, $promptContext = null, $accountId = null, $delayMinutes = 0) {
        // Quiet hours check (e.g. don't schedule tasks between 1 AM and 6 AM)
        $currentHour = (int)date('H');
        if ($currentHour >= 1 && $currentHour < 6) {
            // Push it to 6 AM if we are in quiet hours
            $hoursToAdd = 6 - $currentHour;
            $delayMinutes += ($hoursToAdd * 60);
        }

        $scheduledAt = date('Y-m-d H:i:s', strtotime("+$delayMinutes minutes"));
        
        $generatedComment = null;
        if (($type === 'post_comment' || $type === 'share_link') && $promptContext) {
            // Pre-generate the comment using Gemini
            // If it's share_link, we want an intent to promote, otherwise just answer/interact
            $intent = ($type === 'share_link') ? 'promote_siro' : 'answer_question';
            $generatedComment = generateCommentWithGemini($promptContext, $intent);
        }

        $stmt = $this->con->prepare("
            INSERT INTO social_tasks (account_id, platform, type, target_url, prompt_context, generated_comment, scheduled_at, status)
            VALUES (?, ?, ?, ?, ?, ?, ?, 'pending')
        ");
        $success = $stmt->execute([
            $accountId, 
            $platform, 
            $type, 
            $targetUrl, 
            $promptContext, 
            $generatedComment, 
            $scheduledAt
        ]);

        if ($success && ($type === 'share_link' || $type === 'post_comment')) {
            // Retreive an active account to exclude as parent
            $parentAccountId = $accountId;
            if (!$parentAccountId) {
                $stmtAcc = $this->con->prepare("SELECT id FROM social_accounts WHERE platform = ? AND status = 'active' LIMIT 1");
                $stmtAcc->execute([$platform]);
                $parentAccountId = $stmtAcc->fetchColumn() ?: 0;
            }
            $this->scheduleDialogueDrama($platform, $targetUrl, $promptContext, $parentAccountId, $delayMinutes);
        }

        return $success;
    }

    /**
     * Schedule supporting dialogue tasks from other accounts to create a buzz/drama.
     */
    public function scheduleDialogueDrama($platform, $targetUrl, $promptContext, $parentAccountId, $baseDelayMinutes) {
        // Fetch 2 other active accounts on the same platform
        $stmt = $this->con->prepare("
            SELECT id FROM social_accounts 
            WHERE platform = ? AND status = 'active' AND id != ?
            ORDER BY RAND() LIMIT 2
        ");
        $stmt->execute([$platform, $parentAccountId]);
        $accounts = $stmt->fetchAll(PDO::FETCH_COLUMN);

        if (count($accounts) < 1) return;

        // Account 2: Skeptic/Questioner
        $accountId2 = $accounts[0];
        $comment2 = generateCommentWithGemini($promptContext, 'dialogue_skeptic');
        
        $delay2 = $baseDelayMinutes + rand(3, 7); // Delay child task by rand(3, 7) minutes
        $scheduledAt2 = date('Y-m-d H:i:s', strtotime("+$delay2 minutes"));

        $stmtInsert = $this->con->prepare("
            INSERT INTO social_tasks (account_id, platform, type, target_url, prompt_context, generated_comment, scheduled_at, status)
            VALUES (?, ?, 'post_comment', ?, ?, ?, ?, 'pending')
        ");
        $stmtInsert->execute([$accountId2, $platform, $targetUrl, $promptContext, $comment2, $scheduledAt2]);

        // If we have a third account, schedule the supporter
        if (count($accounts) >= 2) {
            $accountId3 = $accounts[1];
            // Provide context containing the first comment so supporter replies to it
            $augmentedContext = $promptContext . "\n[PREVIOUS_REPLY]: " . $comment2;
            $comment3 = generateCommentWithGemini($augmentedContext, 'dialogue_supporter');
            
            $delay3 = $delay2 + rand(4, 9); // Supporter replies after the skeptic
            $scheduledAt3 = date('Y-m-d H:i:s', strtotime("+$delay3 minutes"));
            
            $stmtInsert->execute([$accountId3, $platform, $targetUrl, $promptContext, $comment3, $scheduledAt3]);
        }
    }
}

// Example usage via CLI
if (php_sapi_name() === 'cli' && isset($argv[1]) && $argv[1] === 'test_schedule') {
    $sm = new ScheduleManager();
    $context = "شو رأيكم بتطبيق سيرو يا كباتن؟ حد جربه؟";
    $success = $sm->scheduleTask('facebook', 'post_comment', 'https://facebook.com/groups/amman.drivers/post/12345', $context, null, 5);
    echo $success ? "Task scheduled successfully!\n" : "Failed to schedule task.\n";
}