initial commit

backend/db.go

@@ -0,0 +1,27 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"os"
+
+	"github.com/jackc/pgx/v5"
+)
+
+var db *pgx.Conn
+
+func connectDB() {
+	var err error
+
+	connStr := os.Getenv("DB_URL")
+	if connStr == "" {
+		panic("DB_URL not set")
+	}
+
+	db, err = pgx.Connect(context.Background(), connStr)
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Println("Connected to PostgreSQL")
+}

backend/go.mod

@@ -0,0 +1,11 @@
+module backend
+
+go 1.26.1
+
+require (
+	github.com/go-chi/chi/v5 v5.2.5 // indirect
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
+	github.com/jackc/pgx/v5 v5.8.0 // indirect
+	golang.org/x/text v0.29.0 // indirect
+)

backend/go.sum

@@ -0,0 +1,17 @@
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/go-chi/chi/v5 v5.2.5 h1:Eg4myHZBjyvJmAFjFvWgrqDTXFyOzjj7YIm3L3mu6Ug=
+github.com/go-chi/chi/v5 v5.2.5/go.mod h1:X7Gx4mteadT3eDOMTsXzmI4/rwUpOwBHLpAfupzFJP0=
+github.com/jackc/pgpassfile v1.0.0 h1:/6Hmqy13Ss2zCq62VdNG8tM1wchn8zjSGOBJ6icpsIM=
+github.com/jackc/pgpassfile v1.0.0/go.mod h1:CEx0iS5ambNFdcRtxPj5JhEz+xB6uRky5eyVu/W2HEg=
+github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 h1:iCEnooe7UlwOQYpKFhBabPMi4aNAfoODPEFNiAnClxo=
+github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761/go.mod h1:5TJZWKEWniPve33vlWYSoGYefn3gLQRzjfDlhSJ9ZKM=
+github.com/jackc/pgx/v5 v5.8.0 h1:TYPDoleBBme0xGSAX3/+NujXXtpZn9HBONkQC7IEZSo=
+github.com/jackc/pgx/v5 v5.8.0/go.mod h1:QVeDInX2m9VyzvNeiCJVjCkNFqzsNb43204HshNSZKw=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+golang.org/x/text v0.29.0 h1:1neNs90w9YzJ9BocxfsQNHKuAT4pkghyXc4nhZ6sJvk=
+golang.org/x/text v0.29.0/go.mod h1:7MhJOA9CD2qZyOKYazxdYMF85OwPdEr9jTtBpO7ydH4=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

backend/handlers.go

@@ -0,0 +1,55 @@
+// TODO: READ AND UNDERSTAND + ALTER
+
+package main
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+)
+
+// GET /users
+func getUsers(w http.ResponseWriter, r *http.Request) {
+	rows, err := db.Query(context.Background(), "SELECT id, name FROM users")
+	if err != nil {
+		http.Error(w, err.Error(), 500)
+		return
+	}
+	defer rows.Close()
+
+	var users []User
+
+	for rows.Next() {
+		var u User
+		rows.Scan(&u.ID, &u.Name)
+		users = append(users, u)
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(users)
+}
+
+// POST /users
+func createUser(w http.ResponseWriter, r *http.Request) {
+	var u User
+
+	err := json.NewDecoder(r.Body).Decode(&u)
+	if err != nil {
+		http.Error(w, "Invalid JSON", 400)
+		return
+	}
+
+	err = db.QueryRow(
+		context.Background(),
+		"INSERT INTO users(name) VALUES($1) RETURNING id",
+		u.Name,
+	).Scan(&u.ID)
+
+	if err != nil {
+		http.Error(w, err.Error(), 500)
+		return
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(u)
+}

backend/main.go

@@ -0,0 +1,67 @@
+// TODO: READ, UNDERSTAND AND ALTER
+
+package main
+
+import (
+	"net/http"
+
+	"github.com/go-chi/chi/v5"
+)
+
+func main() {
+	connectDB()
+
+	r := chi.NewRouter()
+
+	// routes
+	r.Get("/users", getUsers)
+	r.Post("/users", createUser)
+
+	http.ListenAndServe(":8080", r)
+}
+
+/*package main
+
+import (
+	"fmt"
+	"encoding/json"
+	"net/http"
+)
+
+type Message struct {
+	Text string `json:"text"`
+}
+
+type User struct {
+	Name string `json:"name"`
+}
+
+// POST method handler
+func createUserHandler(w http.ResponseWriter, r *http.Request) {
+  var user User
+	// decode json from request body
+	err := json.NewDecoder(r.Body).Decode(&user)
+	if err != nil {
+		http.Error(w, "invalid JSON", http.StatusBadRequest)
+		return
+	}
+
+	response := Message{Text: "User created: " + user.Name}
+
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(response)
+}
+
+// handler function
+func helloHandler(w http.ResponseWriter, r *http.Request) {
+	response := Message{Text: "Hellow from Go API!"}
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(response)
+}
+
+func main() {
+	http.HandleFunc("/hello", helloHandler)
+	http.HandleFunc("/createUser", createUserHandler)
+	fmt.Println("server running on http://localhost:8080")
+	http.ListenAndServe(":8080", nil)
+}*/

backend/models.go

@@ -0,0 +1,7 @@
+package main
+
+type Quote struct {
+	Id     int		`json:"id"`
+	Author string	`json:"author"`
+	Body   string	`json:"body"`
+}