From 12def174a40f667bdfd6283cb007e23374c061da Mon Sep 17 00:00:00 2001 From: Odweta Date: Thu, 19 Mar 2026 09:23:13 +0100 Subject: [PATCH] initial commit --- backend/db.go | 27 ++++++++++++++++++ backend/go.mod | 11 ++++++++ backend/go.sum | 17 ++++++++++++ backend/handlers.go | 55 +++++++++++++++++++++++++++++++++++++ backend/main.go | 67 +++++++++++++++++++++++++++++++++++++++++++++ backend/models.go | 7 +++++ model.md | 0 7 files changed, 184 insertions(+) create mode 100644 backend/db.go create mode 100644 backend/go.mod create mode 100644 backend/go.sum create mode 100644 backend/handlers.go create mode 100644 backend/main.go create mode 100644 backend/models.go create mode 100644 model.md diff --git a/backend/db.go b/backend/db.go new file mode 100644 index 0000000..c39e8e4 --- /dev/null +++ b/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") +} diff --git a/backend/go.mod b/backend/go.mod new file mode 100644 index 0000000..43692b1 --- /dev/null +++ b/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 +) diff --git a/backend/go.sum b/backend/go.sum new file mode 100644 index 0000000..7e62d21 --- /dev/null +++ b/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= diff --git a/backend/handlers.go b/backend/handlers.go new file mode 100644 index 0000000..09fe414 --- /dev/null +++ b/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) +} diff --git a/backend/main.go b/backend/main.go new file mode 100644 index 0000000..f709661 --- /dev/null +++ b/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) +}*/ diff --git a/backend/models.go b/backend/models.go new file mode 100644 index 0000000..d4d6a74 --- /dev/null +++ b/backend/models.go @@ -0,0 +1,7 @@ +package main + +type Quote struct { + Id int `json:"id"` + Author string `json:"author"` + Body string `json:"body"` +} diff --git a/model.md b/model.md new file mode 100644 index 0000000..e69de29