<?php
// ============================================================
// account_manager.php
// Handles rotation and selection of social media accounts
// ============================================================

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

class AccountManager {
    private $con;

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

    /**
     * Get an available account for a specific platform that hasn't been used too recently.
     * 
     * @param string $platform 'facebook' or 'instagram'
     * @param int $cooldownMinutes Minimum minutes since last active
     * @return array|null Account details or null if none available
     */
    public function getAvailableAccount($platform, $cooldownMinutes = 30) {
        // Select an active account that was last active more than X minutes ago,
        // or has never been active (last_active is NULL).
        // Order by last_active ascending to rotate through them (least recently used first).
        
        $stmt = $this->con->prepare("
            SELECT id, username, total_posts, total_comments, proxy_ip, proxy_port, proxy_username, proxy_password
            FROM social_accounts
            WHERE platform = ? 
              AND status = 'active'
              AND (last_active IS NULL OR last_active <= DATE_SUB(NOW(), INTERVAL ? MINUTE))
            ORDER BY last_active ASC, id ASC
            LIMIT 1
        ");
        
        $stmt->execute([$platform, $cooldownMinutes]);
        return $stmt->fetch(PDO::FETCH_ASSOC);
    }

    /**
     * Update the last active timestamp for an account
     */
    public function markAccountActive($accountId) {
        $stmt = $this->con->prepare("UPDATE social_accounts SET last_active = NOW() WHERE id = ?");
        $stmt->execute([$accountId]);
    }
    
    /**
     * Increment comment count
     */
    public function incrementCommentCount($accountId) {
        $stmt = $this->con->prepare("UPDATE social_accounts SET total_comments = total_comments + 1, last_active = NOW() WHERE id = ?");
        $stmt->execute([$accountId]);
    }

    /**
     * Mark an account as restricted or banned
     */
    public function markAccountStatus($accountId, $status) {
        if (!in_array($status, ['active', 'restricted', 'banned'])) return false;
        
        $stmt = $this->con->prepare("UPDATE social_accounts SET status = ? WHERE id = ?");
        return $stmt->execute([$status, $accountId]);
    }
}