<?php

namespace App\Services;

use App\Models\ArchiveInfo;
use Illuminate\Pagination\LengthAwarePaginator;
use Illuminate\Support\Collection;
use Illuminate\Support\Facades\DB;

class ArchiveCardService
{
    public function get(?string $searchText,
                        ?string $dateExtractFrom,
                        ?string $dateExtractTo,
                        ?int $status,
                        string $pageSize
    ) : LengthAwarePaginator
    {
        $query = ArchiveInfo::with(['misHistory', 'foxproHistory'])
            ->orderBy('post_in', 'desc');

        // Поиск по тексту (если передан)
        if (!empty($searchText)) {
            $query->where(function ($q) use ($searchText) {
                // Разбиваем строку поиска на части (по пробелам)
                $searchParts = preg_split('/\s+/', trim($searchText));

                $q->where(function ($subQuery) use ($searchParts, $searchText) {
                    // Сначала проверяем MIS историю
                    $subQuery->whereHas('misHistory', function ($misQuery) use ($searchParts, $searchText) {
                        $this->applySearchToHistory($misQuery, $searchParts, $searchText, 'mis');
                    });

                    // ИЛИ проверяем Foxpro историю (только если нет MIS истории)
                    $subQuery->orWhere(function ($orWhereSubQuery) use ($searchParts, $searchText) {
                        $orWhereSubQuery->whereNull('mis_history_id') // Нет MIS истории
                        ->whereHas('foxproHistory', function ($foxproQuery) use ($searchParts, $searchText) {
                            $this->applySearchToHistory($foxproQuery, $searchParts, $searchText, 'foxpro');
                        });
                    });
                })
                    // Ищем по архивным номерам
                    ->orWhere('archive_num', 'ILIKE', "{$searchText}%")
                    ->orWhere('mis_num', 'ILIKE', "{$searchText}%")
                    ->orWhere('foxpro_num', 'ILIKE', "{$searchText}%");
            });
        }

        // Фильтрация по дате выписки
        if (!empty($dateExtractFrom)) {
            $query->where(function ($q) use ($dateExtractFrom) {
                $q->whereHas('misHistory', function ($misQuery) use ($dateExtractFrom) {
                    $misQuery->whereDate('DateExtract', '>=', $dateExtractFrom);
                })->orWhereHas('foxproHistory', function ($foxproQuery) use ($dateExtractFrom) {
                    $foxproQuery->whereDate('menddate', '>=', $dateExtractFrom);
                });
            });
        }

        if (!empty($dateExtractTo)) {
            $query->where(function ($q) use ($dateExtractTo) {
                $q->whereHas('misHistory', function ($misQuery) use ($dateExtractTo) {
                    $misQuery->whereDate('DateExtract', '<=', $dateExtractTo);
                })->orWhereHas('foxproHistory', function ($foxproQuery) use ($dateExtractTo) {
                    $foxproQuery->whereDate('menddate', '<=', $dateExtractTo);
                });
            });
        }

        // Фильтрация по статусу (если передан)
        if (!empty($status)) {
            $query->where('status_id', $status);
        }

        // Получаем результаты с пагинацией
        $results = $query->paginate($pageSize)
            ->through(function ($archiveInfo) {
                // Приоритет MIS истории
                if ($archiveInfo->misHistory) {
                    $history = $archiveInfo->misHistory;
                    $history->history_type = 'mis';
                } else {
                    $history = $archiveInfo->foxproHistory;
                    $history->history_type = 'foxpro';
                }

                return $history;
            });

        return $results;
    }

    private function applySearchToHistory($query, $searchParts, $searchText, $type)
    {
        if ($type === 'mis') {
            $query->where('MedCardNum', 'ILIKE', "{$searchText}%");

            // Ищем ФИО в зависимости от количества частей
            if (count($searchParts) === 1) {
                $query->orWhere('FAMILY', 'ILIKE', "{$searchParts[0]}%")
                    ->orWhere('Name', 'ILIKE', "{$searchParts[0]}%")
                    ->orWhere('OT', 'ILIKE', "{$searchParts[0]}%");
            } elseif (count($searchParts) === 2) {
                $query->orWhere(function ($subQuery) use ($searchParts) {
                    $subQuery->where('FAMILY', 'ILIKE', "{$searchParts[0]}%")
                        ->where('Name', 'ILIKE', "{$searchParts[1]}%");
                });
            } elseif (count($searchParts) === 3) {
                $query->orWhere(function ($subQuery) use ($searchParts) {
                    $subQuery->where('FAMILY', 'ILIKE', "{$searchParts[0]}%")
                        ->where('Name', 'LIKE', "{$searchParts[1]}%")
                        ->where('OT', 'ILIKE', "{$searchParts[2]}%");
                });
            }

            $query->orWhereRaw("CONCAT(\"FAMILY\", ' ', \"Name\", ' ', \"OT\") ILIKE ?", ["{$searchText}%"]);
        } else { // foxpro
            $query->where('nkarta', 'ILIKE', "{$searchText}%");

            if (count($searchParts) === 1) {
                $query->orWhere('fam', 'ILIKE', "{$searchParts[0]}%")
                    ->orWhere('im', 'ILIKE', "{$searchParts[0]}%")
                    ->orWhere('ot', 'ILIKE', "{$searchParts[0]}%");
            } elseif (count($searchParts) === 2) {
                $query->orWhere(function ($subQuery) use ($searchParts) {
                    $subQuery->where('fam', 'ILIKE', "{$searchParts[0]}%")
                        ->where('im', 'ILIKE', "{$searchParts[1]}%");
                });
            } elseif (count($searchParts) === 3) {
                $query->orWhere(function ($subQuery) use ($searchParts) {
                    $subQuery->where('fam', 'ILIKE', "{$searchParts[0]}%")
                        ->where('im', 'ILIKE', "{$searchParts[1]}%")
                        ->where('ot', 'ILIKE', "{$searchParts[2]}%");
                });
            }

            $query->orWhereRaw("CONCAT(fam, ' ', im, ' ', ot) ILIKE ?", ["{$searchText}%"]);
        }
    }
}