Original Go API commit. (No database connection) (6884c5e6) · Commits · Chris / labs-tutorials

Go API/Notes.txt

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		Original API tutorial could be found at https://medium.com/swlh/create-rest-api-in-minutes-with-go-golang-c4a2c6279721
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Go API/main.go

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		package main

		import (
		"encoding/json"
		"log"
		"net/http"

		"github.com/gorilla/mux"
		)

		// Main function
		func main() {
		// Init router
		r := mux.NewRouter()

		// Hardcoded data - @todo: add database
		contacts = append(contacts, Contact{Name: "Friend_1", Phone: "98xxx-xxxxx", Email: "person1@mail.com"})
		contacts = append(contacts, Contact{Name: "Friend_2", Phone: "96xxx-xxxxx", Email: "person2@mail.com"})
		contacts = append(contacts, Contact{Name: "Friend_3", Phone: "97xxx-xxxxx", Email: "person3@mail.com"})

		// Route handles & endpoints
		r.HandleFunc("/contacts", getContacts).Methods("GET")
		r.HandleFunc("/contacts/{name}", getContact).Methods("GET") // get
		r.HandleFunc("/contacts", createContact).Methods("POST") // create new contact
		// r.HandleFunc("/contacts/{name}", updateContact).Methods("PUT") // update contact
		r.HandleFunc("/contacts/{name}", deleteContact).Methods("DELETE") // delete

		// Start server
		// We put this in log.Fatal as it will return the necessary response codes for any request made
		log.Fatal(http.ListenAndServe(":8080", r))
		}

		// Contact struct (model)
		type Contact struct {
		Name string `json:"name"`
		Phone string `json:"phone"`
		Email string `json:"email"`
		}

		// Init contacts var as a slice Contact struct
		var contacts []Contact

		///
		/// Handler functions
		///

		// Get all contacts
		func getContacts(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		json.NewEncoder(w).Encode(contacts)
		}

		// Get single contact
		func getContact(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		params := mux.Vars(r) // Gets params
		// Looping through contacts and find one with the id from the params
		for _, item := range contacts {
		if item.Name == params["name"] {
		json.NewEncoder(w).Encode(item)
		return // this is important!
		}
		}
		json.NewEncoder(w).Encode(&Contact{})
		}

		func createContact(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		var contact Contact
		_ = json.NewDecoder(r.Body).Decode(&contact)
		contacts = append(contacts, contact)
		json.NewEncoder(w).Encode(contact)
		}

		func deleteContact(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		params := mux.Vars(r)
		for idx, item := range contacts {
		if item.Name == params["name"] {
		contacts = append(contacts[:idx], contacts[idx+1:]...)
		break
		}
		}
		json.NewEncoder(w).Encode(contacts)
		}

		func updateContact(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		params := mux.Vars(r)
		for idx, item := range contacts {
		if item.Name == params["name"] {
		contacts = append(contacts[:idx], contacts[idx+1:]...)
		var contact Contact
		_ = json.NewDecoder(r.Body).Decode(&contact)
		contact.Name = params["name"] // is this really necessary if the request houses the changes?
		json.NewEncoder(w).Encode(contact) // if I'm correct about the above, then couldn't we just send back r?
		return
		}
		}
		}

README.md

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		# labs-tutorials

		Basically just some version controlled history of me playing around
		with coding tutorials and learning new things.

		This repository is open source so others can see the same tutorials I got to use
		and maybe try it out on their own
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