package api

import (
	"errors"
	"gitea.24example.ru/spavelit/bpiek/model"
	"gitea.24example.ru/spavelit/bpiek/utils"
)

var _categories []model.Category
var _parentCategories []model.Category
var _treeCategories []model.TreeCategories

func (a *Api) GetCategories() ([]model.Category, error) {
	if len(_categories) > 0 {
		return _categories, nil
	}

	parentCategories, err := a.GetParentCategories()

	if err != nil {
		return nil, err
	}

	for _, category := range parentCategories {

		_categories = append(_categories, category)

		categoriesAndProduct, err := a.GetCategoriesAndProductsBySlugParentCategory(category.Slug)
		if err != nil {
			return nil, err
		}

		if len(categoriesAndProduct.Categories) != 0 {
			_categories = append(_categories, categoriesAndProduct.Categories...)
		}
	}

	return _categories, nil
}

func (a *Api) GetParentCategories() ([]model.Category, error) {

	if len(_parentCategories) > 0 {
		return _parentCategories, nil
	}

	apiResponse, err := a.Client.HTTPClient.R().SetResult(&model.CategoryResponse{}).Get("client/catalog")
	if err != nil {
		return nil, err
	}

	if apiResponse.StatusCode() != 200 {
		return nil, errors.New("failed to get categories")
	}

	result := apiResponse.Result().(*model.CategoryResponse).Categories

	if len(result) == 0 {
		return nil, errors.New("no categories found")
	}

	_parentCategories = result

	return _parentCategories, nil
}

func (a *Api) GetCategoriesAndProductsBySlugParentCategory(slug string) (*model.CategoriesAndProductsBySlugParentCategoryResponse, error) {
	apiResponse, err := a.Client.HTTPClient.
		R().
		SetResult(&model.CategoriesAndProductsBySlugParentCategoryResponse{}).
		Get("client/category/" + slug + "/json")
	if err != nil {
		return nil, err
	}

	if apiResponse.StatusCode() != 200 {
		return nil, errors.New("failed to get categories and products")
	}

	return apiResponse.Result().(*model.CategoriesAndProductsBySlugParentCategoryResponse), nil
}

func (a *Api) GetTreeCategories() ([]model.TreeCategories, error) {
	if len(_treeCategories) > 0 {
		return _treeCategories, nil
	}

	tree := map[string]interface{}{}

	categories, err := a.GetCategories()
	if err != nil {
		return nil, err
	}

	utils.ConvertListToNestedDict(categories, tree)

	_treeCategories = utils.ConvertToNestedList(tree)

	return _treeCategories, nil
}