<?php

namespace App\Http\Controllers\api;

use App\Http\Controllers\Controller;
use App\Http\Requests\CheckBookFilterRequest;
use App\Http\Requests\CheckBookRequest;
use App\Http\Requests\VolumRequest;
use App\Models\Art;
use App\Models\Book;
use App\Models\Branch;
use App\Models\Category;
use App\Models\Chapter;
use App\Models\Division;
use App\Models\Gate;
use App\Models\Law;
use App\Models\Order;
use App\Models\Part;
use App\Models\RecentArt;
use App\Models\Section;
use App\Models\Volum;
use App\Traits\BaseApiResponse;

class VolumController extends Controller
{
    use BaseApiResponse;

    public function index(VolumRequest $request)
    {
        $validatedData = $request->validated();
        $perPage = $validatedData['per_page'] ?? 15;
        $page = $validatedData['page'] ?? 1;

        $volumes = Volum::where('law_id', $validatedData['law_id'])->paginate($perPage, ['*'], 'page', $page);

        $volumes->getCollection()->transform(function ($volume) {
            $volume['has_book'] = Book::where('volum_id', $volume->id)->exists();
            $volume['is_locked'] = auth()->user()->isSubscriber()  !== false ? false : Law::where('id', $volume['law_id'])->first()?->is_locked;

            unset($volume['law_id']);

            return $volume;
        });

        return $this->success($volumes->items(), 'Success');
    }

    public function check(CheckBookRequest $request)
    {
        $bookId = $request->book_id;
        $volumeId = $request->volume_id;
        $law_Id = $request->law_id;
        $section_id = $request->section_id;
        $division_id = $request->division_id;
        $part_id = $request->part_id;
        $branch_id = $request->branch_id;
        $chapter_id = $request->chapter_id;
        $gate_id = $request->gate_id;

        $perPage = $request->per_page ?? 10;
        if ($bookId) {

            $book = Book::with(['divisions', 'sections', 'gates', 'parts', 'chapters', 'branchs', 'art'])
                ->find($bookId);

            if (!$book) {
                return $this->success([], 'Book not found');
            }

            $data = [];
            $foundRelation = false;
            foreach (['divisions', 'sections', 'gates', 'parts', 'chapters', 'branchs', 'art'] as $relation) {
                if ($book->{$relation}->count() > 0) {
                    $foundRelation = true;
                    $items = $book->{$relation}()->paginate($perPage);
                    foreach ($items as $item) {
                        $data[] = [
                            'id' => $item->id,
                            'title' => $item->title,
                            'number' => $item->number,
                            'type' => $relation,
                            'is_locked' => auth()->user()->isSubscriber()  !== false ? false : Law::where('id', $item->law_id)->first()?->is_locked
                        ];
                    }
                    $paginationData = [
                        'next_page_url' => $items->nextPageUrl(),
                    ];
                    break;
                }
            }

            if ($foundRelation) {
                return $this->success($data, 'Success');
            } else {
                return $this->success([], 'No relations found');
            }
        }

        if ($division_id) {
            $division = Division::with(['sections', 'chapters', 'parts', 'gate', 'branch', 'art'])
                ->find($division_id);

            if (!$division) {
                return $this->success([], 'Division not found');
            }


            $data = [];
            $foundRelation = false;
            foreach (['sections', 'chapters', 'parts', 'gate', 'branch', 'art'] as $relation) {
                if ($division->{$relation}->count() > 0) {
                    $foundRelation = true;
                    $items = $division->{$relation}()->paginate($perPage);
                    foreach ($items as $item) {
                        $data[] = [
                            'id' => $item->id,
                            'title' => $item->title,
                            'number' => $item->number,
                            'type' => $relation,
                            'is_locked' => auth()->user()->isSubscriber()  !== false ? false : Law::where('id', $item->law_id)->first()?->is_locked
                        ];
                    }
                    break;
                }
            }

            if ($foundRelation) {
                return $this->success($data, 'Success');
            } else {
                return $this->success([], 'No relations found');
            }
        }

        if ($section_id) {
            $section = Section::with(['chapters', 'parts', 'gate', 'branch', 'art'])
                ->find($section_id);

            if (!$section) {
                return $this->success([], 'Section not found');
            }

            $data = [];
            $foundRelation = false;
            foreach (['chapters', 'parts', 'gate', 'branch', 'art'] as $relation) {
                if ($section->{$relation}->count() > 0) {
                    $foundRelation = true;
                    $items = $section->{$relation}()->paginate($perPage);
                    foreach ($items as $item) {
                        $data[] = [
                            'id' => $item->id,
                            'title' => $item->title,
                            'number' => $item->number,
                            'type' => $relation,
                            'is_locked' => auth()->user()->isSubscriber()  !== false ? false : Law::where('id', $item->law_id)->first()?->is_locked
                        ];
                    }
                    break;
                }
            }

            if ($foundRelation) {
                return $this->success($data, 'Success');
            } else {
                return $this->success([], 'No relations found');
            }
        }

        if ($volumeId) {
            $volume = Volum::with(['book', 'divisions', 'sections', 'gates', 'parts', 'chapters', 'branchs', 'art'])
                ->find($volumeId);
            if (!$volume) {
                return $this->success([], 'Volume not found');
            }

            $data = [];
            $foundRelation = false;
            foreach (['book', 'divisions', 'sections', 'chapters', 'parts', 'gates', 'branchs', 'art'] as $relation) {
                if ($volume->{$relation}->count() > 0) {
                    $foundRelation = true;
                    $items = $volume->{$relation}()->paginate($perPage);
                    foreach ($items as $item) {
                        $data[] = [
                            'id' => $item->id,
                            'title' => $item->title,
                            'number' => $item->number,
                            'type' => $relation,
                            'is_locked' => auth()->user()->isSubscriber()  !== false ? false : Law::where('id', $item->law_id)->first()?->is_locked
                        ];
                    }
                    break;
                }
            }

            if ($foundRelation) {
                return $this->success($data, 'Success');
            } else {
                return $this->success([], 'No relations found');
            }
        }

        if ($part_id) {
            $part = Part::with(['gate', 'branch', 'art'])
                ->find($part_id);

            if (!$part) {
                return $this->success([], 'Part not found');
            }

            $data = [];
            $foundRelation = false;
            foreach (['gate', 'branch', 'art'] as $relation) {
                if ($part->{$relation}->count() > 0) {
                    $foundRelation = true;
                    $items = $part->{$relation}()->paginate($perPage);
                    foreach ($items as $item) {
                        $data[] = [
                            'id' => $item->id,
                            'title' => $item->title,
                            'number' => $item->number,
                            'type' => $relation,
                            'is_locked' => auth()->user()->isSubscriber() !== false ? false : Law::where('id', $item->law_id)->first()?->is_locked
                        ];
                    }
                    break;
                }
            }

            if ($foundRelation) {
                return $this->success($data, 'Success');
            } else {
                return $this->success([], 'No relations found');
            }
        }

        if ($chapter_id) {
            $chapter = Chapter::with(['parts', 'gate', 'branch', 'art'])
                ->find($chapter_id);

            if (!$chapter) {
                return $this->success([], 'Chapter not found');
            }

            $data = [];
            $foundRelation = false;
            foreach (['parts', 'gate', 'branch', 'art'] as $relation) {
                if ($chapter->{$relation}->count() > 0) {
                    $foundRelation = true;
                    $items = $chapter->{$relation}()->paginate($perPage);
                    foreach ($items as $item) {
                        $data[] = [
                            'id' => $item->id,
                            'title' => $item->title,
                            'number' => $item->number,
                            'type' => $relation,
                            'is_locked' => auth()->user()->isSubscriber()  !== false ? false : Law::where('id', $item->law_id)->first()?->is_locked
                        ];
                    }
                    break;
                }
            }

            if ($foundRelation) {
                return $this->success($data, 'Success');
            } else {
                return $this->success([], 'No relations found');
            }
        }

        if ($branch_id) {
            $branch = Branch::with(['art'])
                ->find($branch_id);

            if (!$branch) {
                return $this->success([], 'Branch not found');
            }

            $data = [];
            $foundRelation = false;
            foreach (['art'] as $relation) {
                if ($branch->{$relation}->count() > 0) {
                    $foundRelation = true;
                    $items = $branch->{$relation}()->paginate($perPage);
                    foreach ($items as $item) {
                        $data[] = [
                            'id' => $item->id,
                            'title' => $item->title,
                            'number' => $item->number,
                            'type' => $relation,
                            'is_locked' => auth()->user()->isSubscriber()  !== false ? false : Law::where('id', $item->law_id)->first()?->is_locked
                        ];
                    }
                    break;
                }
            }

            if ($foundRelation) {
                return $this->success($data, 'Success');
            } else {
                return $this->success([], 'No relations found');
            }
        }


        if ($gate_id) {
            $gate = Gate::with(['branch', 'art'])
                ->find($gate_id);

            if (!$gate) {
                return $this->success([], 'Gate not found');
            }

            $data = [];
            $foundRelation = false;
            foreach (['branch', 'art'] as $relation) {
                if ($gate->{$relation}->count() > 0) {
                    $foundRelation = true;
                    $items = $gate->{$relation}()->paginate($perPage);
                    foreach ($items as $item) {
                        $data[] = [
                            'id' => $item->id,
                            'title' => $item->title,
                            'number' => $item->number,
                            'type' => $relation,
                            'is_locked' => auth()->user()->isSubscriber()  !== false ? false : Law::where('id', $item->law_id)->first()?->is_locked
                        ];
                    }
                    break;
                }
            }

            if ($foundRelation) {
                return $this->success($data, 'Success');
            } else {
                return $this->success([], 'No relations found');
            }
        }

        if ($volumeId) {
            $volume = Volum::with(['book', 'divisions', 'sections', 'gates', 'parts', 'chapters', 'branchs'])
                ->find($volumeId);

            if (!$volume) {
                return $this->success([], 'Volume not found');
            }

            $data = [];
            $foundRelation = false;
            foreach (['book', 'divisions', 'sections', 'chapters', 'parts', 'gates', 'branchs'] as $relation) {
                if ($volume->{$relation}->count() > 0) {
                    $foundRelation = true;
                    $items = $volume->{$relation}()->paginate($perPage);
                    foreach ($items as $item) {
                        $data[] = [
                            'id' => $item->id,
                            'title' => $item->title,
                            'number' => $item->number,
                            'type' => $relation,
                            'is_locked' => auth()->user()->isSubscriber()  !== false ? false : Law::where('id', $item->law_id)->first()?->is_locked
                        ];
                    }
                    break;
                }
            }

            if ($foundRelation) {
                return $this->success($data, 'Success');
            } else {
                return $this->success([], 'No relations found');
            }
        }

        if ($law_Id) {
            $law = Law::find($law_Id);

            if (!$law) {
                return $this->success([], 'Law not found');
            }

            $arts = Volum::query()
                ->where('law_id', $law->id)
                ->get();


            RecentArt::query()->updateOrCreate([
                'user_id' => auth()->user()->id,
                'law_id' => $law_Id
            ], [
                'user_id' => auth()->user()->id,
                'law_id' => $law_Id
            ]);


            $data = [];

            if (count($arts) > 0) {
                foreach ($arts as $item) {
                    $data[] = [
                        'id' => $item->id,
                        'title' => $item->title,
                        'number' => $item->number,
                        'type' => 'volume',
                        'is_locked' => auth()->user()->isSubscriber()  !== false ? false : Law::where('id', $law->id)->first()?->is_locked
                    ];
                }
                return $this->success($data, 'Success');
            }

            $data = [];

            $arts = Art::query()
                ->where('law_id', $law->id)
                ->where('section_id', null)
                ->where('gate_id', null)
                ->where('part_id', null)
                ->where('chapter_id', null)
                ->where('book_id', null)
                ->where('volum_id', null)
                ->get();

            foreach ($arts as $item) {
                $data[] = [
                    'id' => $item->id,
                    'title' => $item->title,
                    'number' => $item->number,
                    'type' => 'art',
                    'is_locked' => auth()->user()->isSubscriber()  !== false ? false : Law::where('id', $law->id)->first()?->is_locked
                ];
            }
            return $this->success($data, 'Success');
        }

        return $this->success([], 'No law or book or volume specified');
    }

    public function check_filter(CheckBookFilterRequest $request)
    {
        $filters = [
            'category_id' => [
                'model' => Law::class,
                'foreign_key' => 'category_id',
                'type' => (new Law)->getTable(),
                'check_mode' => Volum::class,
                'check_key' => 'law_id',
            ],
            'law_id' => [
                'model' => Volum::class,
                'foreign_key' => 'law_id',
                'type' => (new Volum)->getTable(),
                'check_mode' => Book::class,
                'check_key' => 'volum_id',

            ],
            'volume_id' => [
                'model' => Book::class,
                'foreign_key' => 'volum_id',
                'type' => (new Book)->getTable(),
                'check_mode' => Division::class,
                'check_key' => 'book_id',
            ],
            'book_id' => [
                'model' => Division::class,
                'foreign_key' => 'book_id',
                'type' => (new Division)->getTable(),
                'check_mode' => Section::class,
                'check_key' => 'division_id',
            ],
            'division_id' => [
                'model' => Section::class,
                'foreign_key' => 'division_id',
                'type' => 'sections',
                'check_mode' => Chapter::class,
                'check_key' => 'section_id',
            ],
            'section_id' => [
                'model' => Chapter::class,
                'foreign_key' => 'section_id',
                'type' => (new Chapter)->getTable(),
                'check_mode' => Part::class,
                'check_key' => 'chapter_id',
            ],
            'chapter_id' => [
                'model' => Part::class,
                'foreign_key' => 'chapter_id',
                'type' => (new Part)->getTable(),
                'check_mode' => Gate::class,
                'check_key' => 'part_id',
            ],
            'part_id' => [
                'model' => Gate::class,
                'foreign_key' => 'part_id',
                'type' => (new Gate)->getTable(),
                'check_mode' => Branch::class,
                'check_key' => 'gate_id',
            ],
            'gate_id' => [
                'model' => Branch::class,
                'foreign_key' => 'gate_id',
                'type' => (new Branch)->getTable(),
                'check_mode' => Art::class,
                'check_key' => 'branch_id',
            ],
            'branch_id' => [
                'model' => Art::class,
                'foreign_key' => 'branch_id',
                'type' => (new Art)->getTable(),
                'check_mode' => Art::class,
                'check_key' => 'branch_id'
            ]
        ];

        foreach ($filters as $filterKey => $filterInfo) {
            $filterValue = $request->get($filterKey);
            if ($filterValue) {
                $model = $filterInfo['model'];
                $foreignKey = $filterInfo['foreign_key'];
                $type = $filterInfo['type'];
                $check_model = $filterInfo['check_mode'];
                $check_key = $filterInfo['check_key'];

                $items = $model::where($foreignKey, $filterValue)->paginate(10);

                if ($filterKey === 'category_id') {
                    $items = $model::whereIn('category_id', Category::where('type', $this->convertValueTo($filterValue))->get()->pluck('id'))->paginate(10);
                }

                if ($foreignKey == 'branch_id') {
                    return $this->success([], '');
                }

                $data = $items->map(function ($item) use ($type, $check_model, $check_key) {
                    return [
                        'id' => $item?->id,
                        'title' => $item?->title,
                        'number' => $item?->number,
                        'type' => $type,
                        'is_end' => $check_model::where($check_key, $item?->id)->count() !== 0 ? false : true
                    ];
                });

                return $this->success($data, 'Success');
            }
        }

        return $this->success([], 'No law or book or volume specified');
    }


    public function check_filter_with_art(CheckBookFilterRequest $request)
    {
        $lawId = $request->law_id;
        $bookId = $request->book_id;
        $volumeId = $request->volume_id;
        $sectionId = $request->section_id;
        $divisionId = $request->division_id;
        $partId = $request->part_id;
        $branchId = $request->branch_id;
        $chapterId = $request->chapter_id;
        $gateId = $request->gate_id;
        $categoryId = $request->category_id;

        $perPage = $request->per_page ?? 10;
        if ($categoryId) {
            $categories = Category::with(['laws'])->where('type', $this->convertValueTo($categoryId))->get()->pluck('id');

            $items = Law::query()->whereIn('category_id', $categories)->get();
            $data = [];
            foreach ($items as $item) {
                $data[] = [
                    'id' => $item->id,
                    'title' => $item->title,
                    'number' => $item->number,
                    'type' => 'laws',
                    'is_locked' => auth()->user()->isSubscriber() !== false ? false : Law::where('id', $item->id)->first()?->is_locked,
                    'image' => $item?->image,
                    'law' => $item?->title,
                    'count_art' => $item->arts->count(),
                    'count_volums' => $item->volums->count(),
                    'price' => $item->price,
                ];
            }

            return $this->success($data, 'Success');
        }

        if ($lawId) {
            $law = Law::with(['volums', 'divisions', 'sections', 'gates', 'parts', 'chapters', 'branchs', 'arts'])->find($lawId);
            if (!$law) {
                return $this->success([], 'Law not found');
            }

            $data = $this->checkRelations($law, ['volums', 'book', 'divisions', 'sections', 'gates', 'parts', 'chapters', 'branchs', 'arts'], $perPage);
            if ($data) {
                return $this->success($data, 'Success');
            }

            return $this->success([], 'No related records found in the law');
        }


        if ($bookId) {
            $book = Book::with(['divisions', 'sections', 'gates', 'parts', 'chapters', 'branchs', 'art'])->find($bookId);
            if (!$book) {
                return $this->success([], 'Book not found');
            }

            $data = $this->checkRelations($book, ['divisions', 'sections', 'gates', 'parts', 'chapters', 'branchs', 'art'], $perPage);
            if ($data) {
                return $this->success($data, 'Success');
            }

            return $this->success([], 'No related records found in the book');
        }

        if ($volumeId) {
            $volume = Volum::with(['book', 'divisions', 'sections', 'gates', 'parts', 'chapters', 'branchs', 'art'])->find($volumeId);
            if (!$volume) {
                return $this->success([], 'Volume not found');
            }

            $data = $this->checkRelations($volume, ['book', 'divisions', 'sections', 'gates', 'parts', 'chapters', 'branchs', 'art'], $perPage);
            if ($data) {
                return $this->success($data, 'Success');
            }

            return $this->success([], 'No related records found in the volume');
        }

        if ($sectionId) {
            $section = Section::with(['gates', 'parts', 'chapters', 'branchs', 'art'])->find($sectionId);
            if (!$section) {
                return $this->success([], 'Section not found');
            }

            $data = $this->checkRelations($section, ['gates', 'parts', 'chapters', 'branchs', 'art'], $perPage);
            if ($data) {
                return $this->success($data, 'Success');
            }

            return $this->success([], 'No related records found in the section');
        }

        if ($divisionId) {
            $division = Division::with(['gates', 'parts', 'chapters', 'branchs', 'art'])->find($divisionId);
            if (!$division) {
                return $this->success([], 'Division not found');
            }

            $data = $this->checkRelations($division, ['gates', 'parts', 'chapters', 'branchs', 'art'], $perPage);
            if ($data) {
                return $this->success($data, 'Success');
            }

            return $this->success([], 'No related records found in the division');
        }

        if ($partId) {
            $part = Part::with(['gates', 'art'])->find($partId);
            if (!$part) {
                return $this->success([], 'Part not found');
            }

            $data = $this->checkRelations($part, ['gates', 'art'], $perPage);
            if ($data) {
                return $this->success($data, 'Success');
            }

            return $this->success([], 'No related records found in the part');
        }

        if ($branchId) {
            $branch = Branch::with(['gates', 'chapters', 'art'])->find($branchId);
            if (!$branch) {
                return $this->success([], 'Branch not found');
            }

            $data = $this->checkRelations($branch, ['gates', 'chapters', 'art'], $perPage);
            if ($data) {
                return $this->success($data, 'Success');
            }

            return $this->success([], 'No related records found in the branch');
        }

        if ($chapterId) {
            $chapter = Chapter::with(['gate', 'parts', 'art'])->find($chapterId);
            if (!$chapter) {
                return $this->success([], 'Chapter not found');
            }

            $data = $this->checkRelations($chapter, ['gate', 'parts', 'art'], $perPage);
            if ($data) {
                return $this->success($data, 'Success');
            }

            return $this->success([], 'No related records found in the chapter');
        }

        if ($gateId) {
            $gate = Gate::with(['art'])->find($gateId);
            if (!$gate) {
                return $this->success([], 'Gate not found');
            }

            $data = $this->checkRelations($gate, ['art'], $perPage);
            if ($data) {
                return $this->success($data, 'Success');
            }

            return $this->success([], 'No related records found in the gate');
        }

        return $this->success([], 'No valid filter specified');
    }


    private function prepareItemsData($items, $type)
    {
        $data = [];
        foreach ($items as $item) {
            $law = Law::find($item->law_id);
            $data[] = [
                'id' => $item->id,
                'title' => $item->title,
                'number' => $item->number,
                'type' => $type,
                'route' => $this->route($item, $item),
                'is_locked' => auth()->user()->isSubscriber()  !== false ? false : Law::where('id', $item->law_id)->first()?->is_locked,
                'law' => $law?->title,
                'image' => $law?->image,
                'count_art'    => $law?->arts?->count() ?? 0,
                'count_volums' => $law?->volums?->count() ?? 0,
                'price' => $law?->price,
            ];
        }
        return $data;
    }

    private function checkRelations($model, $relations, $perPage)
    {
        foreach ($relations as $relation) {
            if ($model->{$relation} && $model->{$relation}->count() > 0) {
                $items = $model->{$relation}()->paginate($perPage);
                return $this->prepareItemsData($items, $relation);
            }
        }
        return null;
    }


    private function convertValueTo($var)
    {
        switch ($var) {
            case 1:
                return 'hagigi';
                break;
            case 2:
                return 'kifari';
                break;

            default:
                return 'kifari';
                break;
        }
    }

    private function route($modelClass, $query)
    {
        $route = [];
        switch ((new $modelClass)->getTable()) {
            case 'laws':
                $route = array_filter([
                    Law::find($query->id)?->title
                ]);
                break;
            case 'volums':
                $route = array_filter([
                    Law::find($query->law_id)?->title,
                    Volum::find($query->id)?->title
                ]);
                break;
            case 'books':
                $route = array_filter([
                    Law::find($query->law_id)?->title,
                    Volum::find($query->volum_id)?->title,
                ]);
                break;
            case 'divisions':
                $route = array_filter([
                    Law::find($query->law_id)?->title,
                    Volum::find($query->volum_id)?->title,
                    Book::find($query->book_id)?->title,
                ]);
                break;
            case 'sections':
                $route = array_filter([
                    Law::find($query->law_id)?->title,
                    Volum::find($query->volum_id)?->title,
                    Book::find($query->book_id)?->title,
                    Division::find($query->division_id)?->title,
                ]);
                break;
            case 'chapters':
                $route = array_filter([
                    Law::find($query->law_id)?->title,
                    Volum::find($query->volum_id)?->title,
                    Book::find($query->book_id)?->title,
                    Division::find($query->division_id)?->title,
                    Section::find($query->section_id)?->title,
                ]);
                break;
            case 'parts':
                $route = array_filter([
                    Law::find($query->law_id)?->title,
                    Volum::find($query->volum_id)?->title,
                    Book::find($query->book_id)?->title,
                    Division::find($query->division_id)?->title,
                    Section::find($query->section_id)?->title,
                    Chapter::find($query->chapter_id)?->title,
                ]);
                break;
            case 'gates':
                $route = array_filter([
                    Law::find($query->law_id)?->title,
                    Volum::find($query->volum_id)?->title,
                    Book::find($query->book_id)?->title,
                    Division::find($query->division_id)?->title,
                    Section::find($query->section_id)?->title,
                    Chapter::find($query->chapter_id)?->title,
                    Part::find($query->part_id)?->title,
                ]);
                break;
            case 'branches':
                $route = array_filter([
                    Law::find($query->law_id)?->title,
                    Volum::find($query->volum_id)?->title,
                    Book::find($query->book_id)?->title,
                    Division::find($query->division_id)?->title,
                    Section::find($query->section_id)?->title,
                    Chapter::find($query->chapter_id)?->title,
                    Part::find($query->part_id)?->title,
                    Gate::find($query->gate_id)?->title,
                ]);
                break;
            case 'art':
                $route = array_filter([
                    Law::find($query->law_id)?->title,
                    Volum::find($query->volum_id)?->title,
                    Book::find($query->book_id)?->title,
                    Division::find($query->division_id)?->title,
                    Section::find($query->section_id)?->title,
                    Chapter::find($query->chapter_id)?->title,
                    Part::find($query->part_id)?->title,
                    Gate::find($query->gate_id)?->title,
                    Branch::find($query->branch_id)?->title,
                ]);
                break;
            default:
                $route = [];
                break;
        }

        return array_values($route);
    }
}