/**
 * Renders the mentor dashboard for the Mentor-Mentee Plugin.
 */
function mmp_render_mentor_dashboard() {
    // Ensure the user has the correct role
    if (!current_user_can('mentor') && !current_user_can('manage_options')) {
        wp_die(__('You do not have permission to access this page.', 'mentor-mentee-plugin'));
    }

    // Get the current mentor's user ID
    $current_user_id = get_current_user_id();

    // Fetch mentees paired with this mentor
    global $wpdb;
    $pairings_table = $wpdb->prefix . 'pairings';
    $mentees_table = $wpdb->prefix . 'mentees';
    $sessions_table = $wpdb->prefix . 'sessions';
    $feedback_table = $wpdb->prefix . 'feedback';
    $mentors_table = $wpdb->prefix . 'mentors';

    // Retrieve mentees assigned to the current mentor
    $mentees = $wpdb->get_results(
        $wpdb->prepare(
            "SELECT m.* 
             FROM $pairings_table p 
             JOIN $mentees_table m ON p.mentee_id = m.user_id 
             WHERE p.mentor_id = %d",
            $current_user_id
        )
    );

    // Handle availability update
    if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['update_availability']) && check_admin_referer('update_availability_nonce', '_wpnonce')) {
        $availability = sanitize_text_field($_POST['availability']);

        $updated = $wpdb->update(
            $mentors_table,
            ['availability' => $availability],
            ['user_id' => $current_user_id]
        );

        if ($updated !== false) {
            echo '<div class="updated"><p>' . esc_html__('Availability updated successfully.', 'mentor-mentee-plugin') . '</p></div>';
        } else {
            echo '<div class="error"><p>' . esc_html__('Failed to update availability.', 'mentor-mentee-plugin') . '</p></div>';
        }
    }

    // Handle session scheduling
    if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['schedule_session']) && check_admin_referer('schedule_session_nonce', '_wpnonce')) {
        $mentee_id = intval($_POST['mentee_id']);
        $session_date = sanitize_text_field($_POST['session_date']);

        $inserted = $wpdb->insert($sessions_table, [
            'mentor_id' => $current_user_id,
            'mentee_id' => $mentee_id,
            'session_date' => $session_date,
            'status' => 'upcoming',
        ]);

        if ($inserted) {
            echo '<div class="updated"><p>' . esc_html__('Session scheduled successfully.', 'mentor-mentee-plugin') . '</p></div>';
        } else {
            echo '<div class="error"><p>' . esc_html__('Failed to schedule session.', 'mentor-mentee-plugin') . '</p></div>';
        }
    }

    // Handle feedback submission
    if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['submit_feedback']) && check_admin_referer('submit_feedback_nonce', '_wpnonce')) {
        $mentee_id = intval($_POST['mentee_id']);
        $feedback = sanitize_textarea_field($_POST['feedback']);

        $inserted = $wpdb->insert($feedback_table, [
            'mentor_id' => $current_user_id,
            'mentee_id' => $mentee_id,
            'feedback' => $feedback,
            'submitted_at' => current_time('mysql'),
        ]);

        if ($inserted) {
            echo '<div class="updated"><p>' . esc_html__('Feedback submitted successfully.', 'mentor-mentee-plugin') . '</p></div>';
        } else {
            echo '<div class="error"><p>' . esc_html__('Failed to submit feedback.', 'mentor-mentee-plugin') . '</p></div>';
        }
    }

    // Fetch sessions
    $upcoming_sessions = $wpdb->get_results(
        $wpdb->prepare(
            "SELECT * FROM $sessions_table WHERE mentor_id = %d AND status = 'upcoming' ORDER BY session_date ASC",
            $current_user_id
        )
    );

    $completed_sessions = $wpdb->get_results(
        $wpdb->prepare(
            "SELECT * FROM $sessions_table WHERE mentor_id = %d AND status = 'completed' ORDER BY session_date DESC",
            $current_user_id
        )
    );

    // Fetch feedback
    $feedback = [];
    foreach ($mentees as $mentee) {
        $feedback[$mentee->user_id] = $wpdb->get_results(
            $wpdb->prepare(
                "SELECT * FROM $feedback_table WHERE mentee_id = %d AND mentor_id = %d ORDER BY submitted_at DESC",
                $mentee->user_id,
                $current_user_id
            )
        );
    }

    // Load the mentor dashboard template from the templates folder
    mmp_load_template('mentor-dashboard-template', [
        'mentees' => $mentees,
        'upcoming_sessions' => $upcoming_sessions,
        'completed_sessions' => $completed_sessions,
        'feedback' => $feedback,
    ]);
}
/**
 * Renders the mentee dashboard for the Mentor-Mentee Plugin.
 */

function mmp_render_mentee_dashboard() {
    // Ensure the user has the correct role
    if (!current_user_can('mentee') && !current_user_can('manage_options')) {
        wp_die(__('You do not have permission to access this page.', 'mentor-mentee-plugin'));
    }

    global $wpdb;

    // Fetch current user ID
    $current_user_id = get_current_user_id();

    // Fetch sessions for the current mentee
    $sessions_table = $wpdb->prefix . 'sessions';
    $upcoming_sessions = $wpdb->get_results(
        $wpdb->prepare(
            "SELECT * FROM $sessions_table WHERE mentee_id = %d AND status = 'upcoming' ORDER BY session_date ASC",
            $current_user_id
        )
    );

    $completed_sessions = $wpdb->get_results(
        $wpdb->prepare(
            "SELECT * FROM $sessions_table WHERE mentee_id = %d AND status = 'completed' ORDER BY session_date DESC",
            $current_user_id
        )
    );

    // Fetch feedback for the current mentee
    $feedback_table = $wpdb->prefix . 'feedback';
    $feedback = $wpdb->get_results(
        $wpdb->prepare(
            "SELECT * FROM $feedback_table WHERE mentee_id = %d ORDER BY submitted_at DESC",
            $current_user_id
        )
    );

    // Handle goal updates
    if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['update_goals']) && check_admin_referer('update_goals_nonce', '_wpnonce')) {
        $goals = sanitize_text_field($_POST['mentee_goals']);
        $preferences = sanitize_text_field($_POST['mentee_preferences']);
        $mentees_table = $wpdb->prefix . 'mentees';

        $updated = $wpdb->update(
            $mentees_table,
            [
                'goals' => $goals,
                'preferences' => $preferences,
            ],
            ['user_id' => $current_user_id]
        );

        if ($updated !== false) {
            echo '<div class="updated"><p>' . esc_html__('Goals updated successfully.', 'mentor-mentee-plugin') . '</p></div>';
        } else {
            echo '<div class="error"><p>' . esc_html__('Failed to update goals.', 'mentor-mentee-plugin') . '</p></div>';
        }
    }

    // Include the mentee dashboard template from the templates folder
    mmp_load_template('mentee-dashboard-template', [
        'upcoming_sessions' => $upcoming_sessions,
        'completed_sessions' => $completed_sessions,
        'feedback' => $feedback,
    ]);
}
/**
 * Renders the admin dashboard for the Mentor-Mentee Plugin.
 */

function mmp_render_admin_dashboard() {
    // Ensure the user has the correct permissions
    if (!current_user_can('manage_options')) {
        wp_die(__('You do not have permission to access this page.', 'mentor-mentee-plugin'));
    }

    global $wpdb;

    // Fetch data
    $mentors = mmp_get_all_mentors();
    $mentees = mmp_get_all_mentees();

    // Handle form submissions
    if ($_SERVER['REQUEST_METHOD'] === 'POST') {
        if (isset($_POST['add_mentor']) && check_admin_referer('add_mentor_nonce', '_wpnonce')) {
            $expertise = sanitize_text_field($_POST['expertise']);
            $availability = sanitize_text_field($_POST['availability']);
            $user_id = get_current_user_id();

            mmp_add_mentor($user_id, $expertise, $availability);
            echo '<div class="updated"><p>' . esc_html__('Mentor added successfully.', 'mentor-mentee-plugin') . '</p></div>';
        } elseif (isset($_POST['add_mentee']) && check_admin_referer('add_mentee_nonce', '_wpnonce')) {
            $goals = sanitize_text_field($_POST['goals']);
            $preferences = sanitize_text_field($_POST['preferences']);
            $user_id = get_current_user_id();

            mmp_add_mentee($user_id, $goals, $preferences);
            echo '<div class="updated"><p>' . esc_html__('Mentee added successfully.', 'mentor-mentee-plugin') . '</p></div>';
        }
    }

    // Include the admin dashboard template from the templates folder
    mmp_load_template('admin-dashboard-template', [
        'mentors' => $mentors,
        'mentees' => $mentees,
    ]);
}
/**
 * Handles role creation for the Mentor-Mentee Plugin.
 */

// Create custom roles
function mmp_create_roles() {
    // Mentor Role
    add_role(
        'mentor',
        __('Mentor', 'mentor-mentee-plugin'),
        [
            'read' => true, // Basic access
            'edit_own_data' => true, // Custom capability to edit their own data
        ]
    );

    // Mentee Role
    add_role(
        'mentee',
        __('Mentee', 'mentor-mentee-plugin'),
        [
            'read' => true, // Basic access
            'edit_own_data' => true, // Custom capability to edit their own data
        ]
    );

    // Mentor Admin Role
    add_role(
        'mentor_admin',
        __('Mentor Admin', 'mentor-mentee-plugin'),
        [
            'read' => true,
            'manage_options' => true, // Admin settings access
            'edit_any_data' => true, // Custom capability to edit all data
        ]
    );

    // Assign capabilities to default administrator role
    $admin_role = get_role('administrator');
    if ($admin_role) {
        $admin_role->add_cap('edit_any_data'); // Allow admin to edit all data
    }
}

// Remove custom roles and capabilities (on plugin deactivation)
function mmp_remove_roles() {
    // Remove custom roles
    remove_role('mentor');
    remove_role('mentee');
    remove_role('mentor_admin');

    // Remove custom capabilities from administrator role
    $admin_role = get_role('administrator');
    if ($admin_role) {
        $admin_role->remove_cap('edit_any_data');
    }
}

// Hook role creation and removal
register_activation_hook(__FILE__, 'mmp_create_roles');
register_deactivation_hook(__FILE__, 'mmp_remove_roles');