mattlockyer/index.html

## index.html
<!doctype html>

<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>YouTube Search Example</title>
  <meta name="description" content="YouTube Search Example">
  <meta name="author" content="Matt Lockyer">
</head>

<body>

  <input type="text" id="q" placeholder="Search YouTube" />
  <br />
  <button id="search">
    Search
  </button>

  <script>
    const ge = (id) => document.getElementById(id)
    window.onload = () => {
      ge('search').onclick = async() => {
        const q = ge('q').value
        console.log("query", q)
        const res = await fetch('http://localhost:8080/search?q=' + q, {
          method: 'GET', mode: "cors",
        }).then((res) => res.json())
        console.log(res)
      }
    }
  </script>

</body>
</html>

## main.go
package main

import (
	"encoding/json"
	"net/http"
)
/********************************
YouTube Search with Go / GoLang Server.
Client sends url query param "q" to server.
Server searches YouTube API for videos matching q.
Server decodes, does "anything", then responds to client with JSON.
********************************/
var apiKey string = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
type msi = map[string]interface{}

func search(w http.ResponseWriter, r *http.Request) {
	// Read body
	q, ok := r.URL.Query()["q"]
	if !ok || len(q[0]) < 1 {
		http.Error(w, "Url Param 'q' is missing", 500)
		return
	}
	// Fetch response from YouTube
	r2, err := http.Get("https://www.googleapis.com/youtube/v3/search?q=" + q[0] +
		"&type=video&part=snippet&maxResults=20&key=" + apiKey)
	if err != nil {
		http.Error(w, err.Error(), 500)
		return
	}
	defer r2.Body.Close()
	var r3 msi
	err = json.NewDecoder(r2.Body).Decode(&r3)
	if err != nil {
		http.Error(w, err.Error(), 500)
		return
	}
	/********************************
	Do stuff with YouTube search results
	********************************/
	println(r3)
	// Return YouTube results
	output, err := json.Marshal(r3)
	if err != nil {
		http.Error(w, err.Error(), 500)
		return
	}
	w.Header().Set("content-type", "application/json")
	w.Write(output)
}

func main() {
	http.Handle("/", http.FileServer(http.Dir("./static")))
	http.HandleFunc("/search", search)
	println("Listening on 8080")
	http.ListenAndServe(":8080", nil)
}
	<!doctype html>

	<html lang="en">
	<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<title>YouTube Search Example</title>
	<meta name="description" content="YouTube Search Example">
	<meta name="author" content="Matt Lockyer">
	</head>

	<body>

	<input type="text" id="q" placeholder="Search YouTube" />
	<br />
	<button id="search">
	Search
	</button>

	<script>
	const ge = (id) => document.getElementById(id)
	window.onload = () => {
	ge('search').onclick = async() => {
	const q = ge('q').value
	console.log("query", q)
	const res = await fetch('http://localhost:8080/search?q=' + q, {
	method: 'GET', mode: "cors",
	}).then((res) => res.json())
	console.log(res)
	}
	}
	</script>

	</body>
	</html>
	package main

	import (
	"encoding/json"
	"net/http"
	)
	/********************************
	YouTube Search with Go / GoLang Server.
	Client sends url query param "q" to server.
	Server searches YouTube API for videos matching q.
	Server decodes, does "anything", then responds to client with JSON.
	********************************/
	var apiKey string = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
	type msi = map[string]interface{}

	func search(w http.ResponseWriter, r *http.Request) {
	// Read body
	q, ok := r.URL.Query()["q"]
	if !ok \|\| len(q[0]) < 1 {
	http.Error(w, "Url Param 'q' is missing", 500)
	return
	}
	// Fetch response from YouTube
	r2, err := http.Get("https://www.googleapis.com/youtube/v3/search?q=" + q[0] +
	"&type=video&part=snippet&maxResults=20&key=" + apiKey)
	if err != nil {
	http.Error(w, err.Error(), 500)
	return
	}
	defer r2.Body.Close()
	var r3 msi
	err = json.NewDecoder(r2.Body).Decode(&r3)
	if err != nil {
	http.Error(w, err.Error(), 500)
	return
	}
	/********************************
	Do stuff with YouTube search results
	********************************/
	println(r3)
	// Return YouTube results
	output, err := json.Marshal(r3)
	if err != nil {
	http.Error(w, err.Error(), 500)
	return
	}
	w.Header().Set("content-type", "application/json")
	w.Write(output)
	}

	func main() {
	http.Handle("/", http.FileServer(http.Dir("./static")))
	http.HandleFunc("/search", search)
	println("Listening on 8080")
	http.ListenAndServe(":8080", nil)
	}