Initial commit

Initial commit

README.md

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+# Gochat
+
+Experiment to practice Golang for the first time following the "REST API with Mux" tutorial [here](https://www.youtube.com/watch?v=SonwZ6MF5BE).

main.go

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+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"github.com/gorilla/mux"
+	"log"
+	"math/rand"
+	"net/http"
+	"strconv"
+	"time"
+)
+
+// Message struct
+type Text struct {
+	Content string `json:"content"`
+	Author  string `json:"author"`
+}
+
+type Message struct {
+	Id      string `json:"id"`
+	Content Text   `json:"content"`
+}
+
+// Chat as a slice of Messages
+var chat []Message
+
+// Possible Messages
+var quickchat []string
+
+//Possible authors
+var users []string
+
+var idCount int
+
+func getChat(writer http.ResponseWriter, request *http.Request) {
+	writer.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(writer).Encode(chat)
+}
+func getMsg(writer http.ResponseWriter, request *http.Request) {
+	writer.Header().Set("Content-Type", "application/json")
+	params := mux.Vars(request)
+	for _, msg := range chat {
+		if msg.Id == params["id"] {
+			json.NewEncoder(writer).Encode(msg)
+			return
+		}
+	}
+}
+
+func createMsg() (string, string) {
+	content := quickchat[rand.Intn(len(quickchat))]
+	author := users[rand.Intn(len(users))]
+
+	return content, author
+}
+
+func sendMsg(writer http.ResponseWriter, request *http.Request) {
+	writer.Header().Set("Content-Type", "application/json")
+	var newMsg Message
+	_ = json.NewDecoder(request.Body).Decode(&(newMsg.Content))
+	newMsg.Id = strconv.Itoa(idCount)
+	idCount++
+	chat = append(chat, newMsg)
+	json.NewEncoder(writer).Encode(newMsg)
+	fmt.Println("New Message:")
+	fmt.Println("#", newMsg.Id, newMsg.Content.Author, ":", newMsg.Content.Content)
+}
+func editMsg(writer http.ResponseWriter, request *http.Request) {
+	writer.Header().Set("Content-Type", "application/json")
+
+}
+func deleteMsg(writer http.ResponseWriter, request *http.Request) {
+	writer.Header().Set("Content-Type", "application/json")
+
+	params := mux.Vars(request)
+	for index, msg := range chat {
+		if msg.Id == params["id"] {
+			chat = append(chat[:index], chat[index+1:]...)
+			break
+		}
+	}
+	json.NewEncoder(writer).Encode(chat)
+}
+
+func main() {
+	// Init rand
+	rand.Seed(time.Now().Unix())
+
+	// Init server router
+	router := mux.NewRouter()
+
+	// Init chat variables
+	quickchat = []string{"Wow!", "OMG!", "Nice shot!", "What a save!", "Sorry!", "My bad."}
+	users = []string{"Chipper", "Beast", "Jester", "Merlin", "Bandit", "Rainmaker"}
+
+	first := Message{"0", Text{"The chat room is open.", "SERVER"}}
+	chat = append(chat, first)
+	idCount = 1
+
+	// Handlers
+	router.HandleFunc("/api/chat", getChat).Methods("GET")
+	router.HandleFunc("/api/chat/{id}", getMsg).Methods("GET")
+	router.HandleFunc("/api/chat", sendMsg).Methods("POST")
+	router.HandleFunc("/api/chat/{id}", editMsg).Methods("PUT")
+	router.HandleFunc("/api/chat/{id}", deleteMsg).Methods("DELETE")
+
+	// Log
+	log.Fatal(http.ListenAndServe(":8000", router))
+
+	last := Message{"-1", Text{"The chat room is closed.", "SERVER"}}
+	chat = append(chat, last)
+
+	return
+}