package main

import (
	"context"
	"io"
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"
)

func TestCommerceCartAddUsesBaseURLAndPayload(t *testing.T) {
	var gotMethod, gotPath, gotBody string
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		gotMethod, gotPath = r.Method, r.URL.Path
		b, _ := io.ReadAll(r.Body)
		gotBody = string(b)
		w.Header().Set("Content-Type", "application/json")
		_, _ = io.WriteString(w, `{ "id": "cart-1", "items": [] }`)
	}))
	defer server.Close()

	client := newClient(Config{BaseURL: server.URL}, "token", "", 0)
	var out strings.Builder
	if err := runCommerceCarts(context.Background(), client, []string{"add", "cart-1", "--sku", "ND10200818HB0001", "--quantity", "2"}, strings.NewReader(""), &out); err != nil {
		t.Fatal(err)
	}
	if gotMethod != http.MethodPost || gotPath != "/cart/byid/cart-1" {
		t.Fatalf("request = %s %s, want POST /cart/byid/cart-1", gotMethod, gotPath)
	}
	if gotBody != `{"quantity":2,"sku":"ND10200818HB0001"}` {
		t.Fatalf("body = %s", gotBody)
	}
}

func TestCommercePromotionUpsertUsesMCPHandshakeAndToolCall(t *testing.T) {
	var methods []string
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		body, _ := io.ReadAll(r.Body)
		methods = append(methods, string(body))
		w.Header().Set("Content-Type", "application/json")
		_, _ = io.WriteString(w, `{"jsonrpc":"2.0","id":1,"result":{}}`)
	}))
	defer server.Close()

	client := newClient(Config{BaseURL: server.URL}, "token", "", 0)
	promotion := `{"id":"promo-test","name":"Test","status":"active","conditions":[],"actions":[]}`
	var out strings.Builder
	if err := runCommercePromotions(context.Background(), client, []string{"upsert", "--input", "-"}, strings.NewReader(promotion), &out); err != nil {
		t.Fatal(err)
	}
	if len(methods) != 3 {
		t.Fatalf("MCP request count = %d, want 3", len(methods))
	}
	if !strings.Contains(methods[0], `"method":"initialize"`) || !strings.Contains(methods[1], `"method":"notifications/initialized"`) || !strings.Contains(methods[2], `"method":"tools/call"`) || !strings.Contains(methods[2], `"name":"upsert_promotion"`) {
		t.Fatalf("unexpected MCP requests: %v", methods)
	}
}