Naeel
01df1498d6
- examples/big-suite: E-Commerce 10 functions, 6 layers, real depends_on - provider: nodejs packages now wrapped in ESM zip (buildJSDeployZip) - provider: loadPackageLiteral reads raw file, nodejs zip via source_dir - all 10 functions verified working: python/node/ruby/go runtimes
99 lines
2.4 KiB
Go
99 lines
2.4 KiB
Go
package main
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import (
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"encoding/json"
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"fmt"
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"math/rand"
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"net/http"
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"time"
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)
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type OrderItem struct {
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ProductID string `json:"product_id"`
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Name string `json:"name"`
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Price float64 `json:"price"`
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Qty int `json:"qty"`
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}
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type OrderRequest struct {
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UserID string `json:"user_id"`
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Items []OrderItem `json:"items"`
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PayToken string `json:"pay_token"`
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Address string `json:"address"`
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}
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type OrderResponse struct {
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Status string `json:"status"`
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OrderID string `json:"order_id"`
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UserID string `json:"user_id"`
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Items []OrderItem `json:"items"`
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Total float64 `json:"total"`
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CreatedAt string `json:"created_at"`
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EstDays int `json:"estimated_delivery_days"`
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}
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func generateOrderID() string {
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const chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
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r := rand.New(rand.NewSource(time.Now().UnixNano()))
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b := make([]byte, 10)
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for i := range b {
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b[i] = chars[r.Intn(len(chars))]
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}
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return "ORD-" + string(b)
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}
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func calcTotal(items []OrderItem) float64 {
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total := 0.0
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for _, item := range items {
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total += item.Price * float64(item.Qty)
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}
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// Округление до 2 знаков
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return float64(int(total*100)) / 100
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}
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func Handler(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("Content-Type", "application/json")
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if r.Method != http.MethodPost {
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w.WriteHeader(http.StatusMethodNotAllowed)
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fmt.Fprintln(w, `{"error":"method not allowed"}`)
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return
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}
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var req OrderRequest
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if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
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w.WriteHeader(http.StatusBadRequest)
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fmt.Fprintf(w, `{"error":"invalid JSON: %s"}`, err.Error())
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return
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}
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if req.UserID == "" {
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w.WriteHeader(http.StatusUnprocessableEntity)
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fmt.Fprintln(w, `{"error":"user_id required"}`)
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return
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}
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if len(req.Items) == 0 {
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w.WriteHeader(http.StatusUnprocessableEntity)
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fmt.Fprintln(w, `{"error":"items cannot be empty"}`)
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return
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}
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if req.PayToken == "" {
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w.WriteHeader(http.StatusUnprocessableEntity)
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fmt.Fprintln(w, `{"error":"pay_token required"}`)
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return
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}
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resp := OrderResponse{
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Status: "created",
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OrderID: generateOrderID(),
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UserID: req.UserID,
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Items: req.Items,
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Total: calcTotal(req.Items),
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CreatedAt: time.Now().UTC().Format(time.RFC3339),
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EstDays: 3 + rand.Intn(5),
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}
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w.WriteHeader(http.StatusCreated)
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json.NewEncoder(w).Encode(resp)
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}
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