package main

import (
	"encoding/json"
	"errors"
	"io/ioutil"
)

func allFeedItems(url string) ([]string, error) {
	jsonFeed := &struct {
		Items []struct {
			Url string `json:"url"`
		} `json:"items"`
	}{}
	resp, err := client.Get(url)
	if err != nil {
		return nil, errors.New("failed to get json feed")
	}
	defer func() { _ = resp.Body.Close() }()
	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		return nil, errors.New("failed to read json feed")
	}
	err = json.Unmarshal(body, &jsonFeed)
	if err != nil {
		return nil, errors.New("failed to parse json feed")
	}
	var allUrls []string
	for _, item := range jsonFeed.Items {
		allUrls = append(allUrls, item.Url)
	}
	return allUrls, nil
}