110 lines
2.2 KiB
Go
110 lines
2.2 KiB
Go
package main
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import (
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"bytes"
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"html/template"
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"log"
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"math"
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"net/http"
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"net/url"
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"os"
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"strconv"
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"time"
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"github.com/freshman-tech/news-demo-starter-files/news"
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"github.com/joho/godotenv"
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)
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var tpl = template.Must(template.ParseFiles("index.html"))
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type Search struct {
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Query string
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NextPage int
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TotalPages int
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Results *news.Results
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}
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func indexHandler(w http.ResponseWriter, r *http.Request) {
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buf := &bytes.Buffer{}
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err := tpl.Execute(buf, nil)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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buf.WriteTo(w)
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}
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func searchHandler(newsapi *news.Client) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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u, err := url.Parse(r.URL.String())
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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params := u.Query()
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searchQuery := params.Get("q")
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page := params.Get("page")
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if page == "" {
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page = "1"
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}
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results, err := newsapi.FetchEverything(searchQuery, page)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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nextPage, err := strconv.Atoi(page)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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search := &Search{
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Query: searchQuery,
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NextPage: nextPage,
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TotalPages: int(math.Ceil(float64(results.TotalResults / newsapi.PageSize))),
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Results: results,
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}
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buf := &bytes.Buffer{}
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err = tpl.Execute(buf, search)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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buf.WriteTo(w)
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}
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}
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func main() {
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err := godotenv.Load()
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if err != nil {
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log.Println("Error loading .env file")
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}
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port := os.Getenv("PORT")
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if port == "" {
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port = "3000"
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}
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apiKey := os.Getenv("NEWS_API_KEY")
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if apiKey == "" {
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log.Fatal("Env: apiKey must be set")
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}
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myClient := &http.Client{Timeout: 10 * time.Second}
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newsapi := news.NewClient(myClient, apiKey, 20)
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fs := http.FileServer(http.Dir("assets"))
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mux := http.NewServeMux()
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mux.Handle("/assets/", http.StripPrefix("/assets/", fs))
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mux.HandleFunc("/search", searchHandler(newsapi))
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mux.HandleFunc("/", indexHandler)
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http.ListenAndServe(":"+port, mux)
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}
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