<?php

namespace App\Models;

use CodeIgniter\Database\ResultInterface;
use CodeIgniter\Model;
use Config\OSPOS;
use stdClass;

/**
 * Item_kit class
 */
class Item_kit extends Model
{
    protected $table = 'item_kits';
    protected $primaryKey = 'item_kit_id';
    protected $useAutoIncrement = true;
    protected $useSoftDeletes = false;
    protected $allowedFields = [
        'item_kit_number',
        'name',
        'description',
        'item_id',
        'kit_discount',
        'kit_discount_type',
        'price_option'
    ];

    /**
     * Determines if a given item_id is an item kit
     */
    public function exists(int $item_kit_id): bool
    {
        $builder = $this->db->table('item_kits');
        $builder->where('item_kit_id', $item_kit_id);

        return ($builder->get()->getNumRows() == 1);    // TODO: ===
    }

    /**
     * Check if a given item_id is an item kit
     */
    public function is_valid_item_kit(string $item_kit_id): bool
    {
        if (!empty($item_kit_id)) {
            // KIT #
            $pieces = explode(' ', $item_kit_id);

            if ((count($pieces) == 2) && preg_match('/(KIT)/i', $pieces[0])) {    // TODO: === ... perhaps think about converting this to ternary notation
                return $this->exists($pieces[1]);
            } else {
                return $this->item_number_exists($item_kit_id);
            }
        }

        return false;
    }

    /**
     * Determines if a given item_number exists
     */
    public function item_number_exists(string $item_kit_number, string $item_kit_id = ''): bool
    {
        $config = config(OSPOS::class)->settings;

        if ($config['allow_duplicate_barcodes']) {
            return false;
        }

        $builder = $this->db->table('item_kits');
        $builder->where('item_kit_number', $item_kit_number);

        // Check if $item_id is a number and not a string starting with 0
        // because cases like 00012345 will be seen as a number where it is a barcode
        if (ctype_digit($item_kit_id) && !str_starts_with($item_kit_id, '0')) {
            $builder->where('item_kit_id !=', (int) $item_kit_id);
        }

        return ($builder->get()->getNumRows() >= 1);
    }

    /**
     * Gets total of rows
     */
    public function get_total_rows(): int
    {
        $builder = $this->db->table('item_kits');

        return $builder->countAllResults();
    }

    /**
     * Gets information about a particular item kit
     */
    public function get_info(string $item_kit_id): object
    {
        $builder = $this->db->table('item_kits');
        $builder->select('
            item_kit_id,
            item_kits.name as name,
            item_kit_number,
            items.name as item_name,
            item_kits.description,
            items.description as item_description,
            item_kits.item_id as kit_item_id,
            kit_discount,
            kit_discount_type,
            price_option,
            print_option,
            category,
            supplier_id,
            item_number,
            cost_price,
            unit_price,
            reorder_level,
            receiving_quantity,
            pic_filename,
            allow_alt_description,
            is_serialized,
            items.deleted,
            item_type,
            stock_type
        ');

        $builder->join('items', 'item_kits.item_id = items.item_id', 'left');
        $builder->where('item_kit_id', $item_kit_id);
        $builder->orWhere('item_kit_number', $item_kit_id);

        $query = $builder->get();

        if ($query->getNumRows() == 1) {    // TODO: ===
            return $query->getRow();
        } else {
            // Get empty base parent object, as $item_kit_id is NOT an item kit
            $item_obj = new stdClass();

            // Get all the fields from items table
            foreach ($this->db->getFieldNames('item_kits') as $field) {
                $item_obj->$field = '';
            }

            return $item_obj;
        }
    }

    /**
     * Gets information about multiple item kits
     */
    public function get_multiple_info(array $item_kit_ids): ResultInterface
    {
        $builder = $this->db->table('item_kits');
        $builder->whereIn('item_kit_id', $item_kit_ids);
        $builder->orderBy('name', 'asc');

        return $builder->get();
    }

    /**
     * Inserts or updates an item kit
     */
    public function save_value(array &$item_kit_data, int $item_kit_id = NEW_ENTRY): bool
    {
        $builder = $this->db->table('item_kits');
        if ($item_kit_id == NEW_ENTRY || !$this->exists($item_kit_id)) {
            if ($builder->insert($item_kit_data)) {
                $item_kit_data['item_kit_id'] = $this->db->insertID();

                return true;
            }

            return false;
        }

        $builder->where('item_kit_id', $item_kit_id);

        return $builder->update($item_kit_data);
    }

    /**
     * Deletes one item kit
     */
    public function delete($item_kit_id = null, bool $purge = false): bool
    {
        $builder = $this->db->table('item_kits');

        return $builder->delete(['item_kit_id' => $item_kit_id]);
    }

    /**
     * Deletes a list of item kits
     */
    public function delete_list(array $item_kit_ids): bool
    {
        $builder = $this->db->table('item_kits');
        $builder->whereIn('item_kit_id', $item_kit_ids);

        return $builder->delete();
    }

    /**
     * @param string $search
     * @param int $limit
     * @return array
     */
    public function get_search_suggestions(string $search, int $limit = 25): array
    {
        $suggestions = [];

        $builder = $this->db->table('item_kits');

        // KIT #
        if (stripos($search, 'KIT ') !== false) {
            $builder->like('item_kit_id', str_ireplace('KIT ', '', $search));
            $builder->orderBy('item_kit_id', 'asc');

            foreach ($builder->get()->getResult() as $row) {
                $suggestions[] = ['value' => 'KIT ' . $row->item_kit_id, 'label' => 'KIT ' . $row->item_kit_id];
            }
        } else {
            $builder->like('name', $search);
            $builder->orLike('item_kit_number', $search);
            $builder->orderBy('name', 'asc');

            foreach ($builder->get()->getResult() as $row) {
                $suggestions[] = ['value' => 'KIT ' . $row->item_kit_id, 'label' => $row->name];
            }
        }

        // Only return $limit suggestions
        if (count($suggestions) > $limit) {
            $suggestions = array_slice($suggestions, 0, $limit);
        }

        return $suggestions;
    }

    /**
     * Gets rows
     */
    public function get_found_rows(string $search): int
    {
        return $this->search($search, 0, 0, 'name', 'asc', true);
    }

    /**
     * Perform a search on items
     */
    public function search(string $search, ?int $rows = 0, ?int $limit_from = 0, ?string $sort = 'name', ?string $order = 'asc', ?bool $count_only = false)
    {
        // Set default values
        if ($rows == null) $rows = 0;
        if ($limit_from == null) $limit_from = 0;
        if ($sort == null) $sort = 'name';
        if ($order == null) $order = 'asc';
        if ($count_only == null) $count_only = false;

        $builder = $this->db->table('item_kits');

        // get_found_rows case
        if ($count_only) {
            $builder->select('COUNT(item_kit_id) as count');
        }

        $builder->like('name', $search);
        $builder->orLike('description', $search);
        $builder->orLike('item_kit_number', $search);

        // KIT #
        if (stripos($search, 'KIT ') !== false) {
            $builder->orLike('item_kit_id', str_ireplace('KIT ', '', $search));
        }

        // get_found_rows case
        if ($count_only) {
            return $builder->get()->getRow()->count;
        }

        $builder->orderBy($sort, $order);

        if ($rows > 0) {
            $builder->limit($rows, $limit_from);
        }

        return $builder->get();
    }
}