package search

import (
	"context"
	"encoding/json"
	"fmt"
	"net/http"

	"github.com/google/go-querystring/query"
	"go.fifitido.net/twitch/api/endpoint"
	"go.fifitido.net/twitch/api/types"
)

type SearchCategoriesParams struct {
	// The URI-encoded search string. For example, encode #archery as %23archery and search strings like angel of death as angel%20of%20death.
	Query string `url:"query,omitempty"`

	// The maximum number of items to return per page in the response.
	// The minimum page size is 1 item per page and the maximum is 100 items per page.
	// The default is 20.
	First int `url:"first,omitempty"`

	// The cursor used to get the next page of results.
	// The Pagination object in the response contains the cursor’s value.
	// Read More: https://dev.twitch.tv/docs/api/guide#pagination
	After string `url:"after,omitempty"`
}

type SearchCategoriesResponse struct {
	// The list of games or categories that match the query. The list is empty if there are no matches.
	Data []struct {
		// A URL to an image of the game’s box art or streaming category.
		BoxArtURL string `json:"box_art_url"`
		// The name of the game or category.
		Name string `json:"name"`
		// An ID that uniquely identifies the game or category.
		ID string `json:"id"`
	} `json:"data"`

	// A pagination object that contains the cursor to use to get the next page of results.
	// The object is empty if there are no more pages left to page through.
	// Read More: https://dev.twitch.tv/docs/api/guide#pagination
	Pagination types.Pagination `json:"pagination"`
}

// Gets the games or categories that match the specified query.
//
// To match, the category’s name must contain all parts of the query string.
// For example, if the query string is 42, the response includes any category name that contains 42 in the title.
// If the query string is a phrase like love computer, the response includes any category name that contains the words love and computer anywhere in the name.
// The comparison is case insensitive.
//
// Requires an app access token or user access token.
func (s *Search) SearchCategories(ctx context.Context, params *SearchCategoriesParams) (*SearchCategoriesResponse, error) {
	v, _ := query.Values(params)

	req, err := http.NewRequestWithContext(ctx, http.MethodGet, endpoint.Make(s.baseUrl, "search/categories", v), nil)
	if err != nil {
		return nil, err
	}

	res, err := s.client.Do(req)
	if err != nil {
		return nil, err
	}
	defer res.Body.Close()

	statusOK := res.StatusCode >= 200 && res.StatusCode < 300
	if !statusOK {
		return nil, fmt.Errorf("search categories request failed: %s", res.Status)
	}

	var data SearchCategoriesResponse
	if err := json.NewDecoder(res.Body).Decode(&data); err != nil {
		return nil, err
	}

	return &data, nil
}