feat(examples): adding a new http example (#8)

adding a new http example

examples/http/main.go

@@ -0,0 +1,82 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"strconv"
+
+	"github.com/Jacobbrewer1/patcher"
+	"github.com/gorilla/mux"
+)
+
+type Person struct {
+	Name   string   `db:"name"`
+	Age    int      `db:"age"`
+	Height *float64 `db:"height"`
+}
+
+type PersonWhere struct {
+	ID int `db:"id"`
+}
+
+func NewPersonWhere(id int) *PersonWhere {
+	return &PersonWhere{
+		ID: id,
+	}
+}
+
+func (p *PersonWhere) Where() (string, []any) {
+	return "id = ?", []any{p.ID}
+}
+
+func main() {
+	r := mux.NewRouter()
+
+	r.HandleFunc("/people/{id}", patch).Methods(http.MethodPatch)
+
+	if err := http.ListenAndServe(":8080", r); err != nil {
+		panic(err)
+	}
+}
+
+func patch(w http.ResponseWriter, r *http.Request) {
+	personIDStr := mux.Vars(r)["id"]
+	personID, err := strconv.Atoi(personIDStr)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	// Get the person from the database
+	person := new(Person)
+	if err := json.NewDecoder(r.Body).Decode(person); err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	// Create the where condition
+	condition := NewPersonWhere(personID)
+
+	// Generate the SQL
+	sqlStr, args, err := patcher.GenerateSQL(
+		person,
+		patcher.WithTable("people"),
+		patcher.WithWhere(condition),
+	)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	fmt.Println(sqlStr)
+	fmt.Println(args)
+
+	respStr := fmt.Sprintf("SQL:\n%s\n\nArgs:\n%v\n", sqlStr, args)
+
+	w.Header().Set("Content-Type", "text/plain")
+	w.WriteHeader(http.StatusOK)
+	if _, err = w.Write([]byte(respStr)); err != nil {
+		fmt.Println("error writing response:", err)
+	}
+}

go.mod

@@ -5,6 +5,7 @@ go 1.23
 toolchain go1.23.1
 
 require (
+	github.com/gorilla/mux v1.8.1
 	github.com/jmoiron/sqlx v1.4.0
 	github.com/stretchr/testify v1.9.0
 	github.com/vektra/mockery/v2 v2.46.2

go.sum

@@ -127,6 +127,8 @@ github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+
 github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+vpHVxEJEs9eg=
 github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5mhpdKc/us6bOk=
 github.com/googleapis/google-cloud-go-testing v0.0.0-20200911160855-bcd43fbb19e8/go.mod h1:dvDLG8qkwmyD9a/MJJN3XJcT3xFxOKAvTZGvuZmac9g=
+github.com/gorilla/mux v1.8.1 h1:TuBL49tXwgrFYWhqrNgrUNEY92u81SPhu7sTdzQEiWY=
+github.com/gorilla/mux v1.8.1/go.mod h1:AKf9I4AEqPTmMytcMc0KkNouC66V3BtZ4qD5fmWSiMQ=
 github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/hashicorp/hcl v1.0.0 h1:0Anlzjpi4vEasTeNFn2mLJgTSwt0+6sfsiTG8qcWGx4=