first commit

Co-Authored-By: Codex <noreply@openai.com>

handler/response.go

@@ -0,0 +1,42 @@
+package handler
+
+import (
+	"encoding/json"
+	"net/http"
+	"strconv"
+
+	"github.com/basketikun/infinite-canvas/model"
+)
+
+type response struct {
+	Code int    `json:"code"`
+	Data any    `json:"data"`
+	Msg  string `json:"msg"`
+}
+
+func OK(w http.ResponseWriter, data any) {
+	writeJSON(w, response{Code: 0, Data: data, Msg: "ok"})
+}
+
+func Fail(w http.ResponseWriter, msg string) {
+	writeJSON(w, response{Code: 1, Data: nil, Msg: msg})
+}
+
+func writeJSON(w http.ResponseWriter, value any) {
+	w.Header().Set("Content-Type", "application/json")
+	_ = json.NewEncoder(w).Encode(value)
+}
+
+func parseQuery(r *http.Request) model.Query {
+	q := r.URL.Query()
+	page, _ := strconv.Atoi(q.Get("page"))
+	pageSize, _ := strconv.Atoi(q.Get("pageSize"))
+	return model.Query{
+		Keyword:  q.Get("keyword"),
+		Tags:     q["tag"],
+		Category: q.Get("category"),
+		Type:     q.Get("type"),
+		Page:     page,
+		PageSize: pageSize,
+	}
+}