89 lines
1.9 KiB
Go
89 lines
1.9 KiB
Go
package main
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import (
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"encoding/json"
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"fmt"
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"log"
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"net/http"
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)
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type ItemID = int
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type Story struct {
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ID ItemID
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By string // username of author
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Time int // UNIX timestamp
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Descendants int // number of comments
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Kids []ItemID
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Score int
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Title string
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Url string
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}
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var (
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HackerNewsUrl string
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HackerNewsFirebaseUrl string
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)
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func init() {
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HackerNewsUrl = "https://news.ycombinator.com"
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HackerNewsFirebaseUrl = "https://hacker-news.firebaseio.com/v0"
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}
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func FetchHackerNewsTopStories() []Story {
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// API docs: https://github.com/HackerNews/API
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url := fmt.Sprintf("%s/topstories.json", HackerNewsFirebaseUrl)
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resp, err := http.Get(url)
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if err != nil {
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log.Fatal("Error fetching top stories:", err)
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}
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defer resp.Body.Close()
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log.Printf("GET %s %d\n", url, resp.StatusCode)
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var ids []int
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err = json.NewDecoder(resp.Body).Decode(&ids)
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if err != nil {
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log.Fatal("Error decoding top stories JSON:", err)
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}
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// we are only interested in the first page of top stories
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const limit = 30
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ids = ids[:limit]
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var stories [limit]Story
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for i, id := range ids {
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story := FetchStoryById(id)
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stories[i] = story
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}
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// Can't return [30]Story as []Story so we copy the array
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return stories[:]
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}
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func FetchStoryById(id ItemID) Story {
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url := fmt.Sprintf("https://hacker-news.firebaseio.com/v0/item/%d.json", id)
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resp, err := http.Get(url)
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if err != nil {
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log.Fatal("Error fetching story:", err)
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}
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defer resp.Body.Close()
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log.Printf("GET %s %d\n", url, resp.StatusCode)
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var story Story
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err = json.NewDecoder(resp.Body).Decode(&story)
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if err != nil {
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log.Fatal("Error decoding story JSON:", err)
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}
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return story
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}
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func HackerNewsUserLink(user string) string {
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return fmt.Sprintf("%s/user?id=%s", HackerNewsUrl, user)
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}
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func HackerNewsItemLink(id int) string {
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return fmt.Sprintf("%s/item?id=%d", HackerNewsUrl, id)
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}
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