feat: implement update page

Author: mkfsn

README.md

@@ -22,10 +22,10 @@ go get -u github.com/mkfsn/notion-go
   * [x] Retrieve ✅
   * [x] List ✅
   * [x] Query ✅
-- [ ] Pages ⚠️
+- [x] Pages ✅
   * [x] Retrieve ✅
   * [x] Create ✅️
-  * [ ] Update ❌
+  * [x] Update ✅️
 - [x] Blocks ✅️
   * [x] Children ✅
     - [x] Retrieve ✅

examples/update-page/main.go

@@ -0,0 +1,34 @@
+package main
+
+import (
+	"context"
+	"log"
+	"os"
+
+	"github.com/mkfsn/notion-go"
+)
+
+func main() {
+	c := notion.New(notion.WithAuthToken(os.Getenv("NOTION_AUTH_TOKEN")))
+
+	page, err := c.Pages().Update(context.Background(),
+		notion.PagesUpdateParameters{
+			PageID: "6eaac3811afd4f368209b572e13eace4",
+			Properties: map[string]notion.PropertyValue{
+				"In stock": notion.CheckboxPropertyValue{
+					Checkbox: true,
+				},
+
+				"Price": notion.NumberPropertyValue{
+					Number: 30,
+				},
+			},
+		},
+	)
+
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	log.Printf("page: %#v\n", page)
+}

pages.go

@@ -648,8 +648,8 @@ type PagesRetrieveResponse struct {
 }
 
 type PagesUpdateParameters struct {
-	PageID     string
-	Properties map[string]PropertyValue `json:"properties"`
+	PageID     string                   `json:"-" url:"-"`
+	Properties map[string]PropertyValue `json:"properties" url:"-"`
 }
 
 type PagesUpdateResponse struct {
@@ -703,7 +703,20 @@ func (p *pagesClient) Retrieve(ctx context.Context, params PagesRetrieveParamete
 }
 
 func (p *pagesClient) Update(ctx context.Context, params PagesUpdateParameters) (*PagesUpdateResponse, error) {
-	return nil, ErrUnimplemented
+	endpoint := strings.Replace(APIPagesUpdateEndpoint, "{page_id}", params.PageID, 1)
+
+	b, err := p.client.Request(ctx, http.MethodPatch, endpoint, params)
+	if err != nil {
+		return nil, err
+	}
+
+	var response PagesUpdateResponse
+
+	if err := json.Unmarshal(b, &response); err != nil {
+		return nil, err
+	}
+
+	return &response, nil
 }
 
 func (p *pagesClient) Create(ctx context.Context, params PagesCreateParameters) (*PagesCreateResponse, error) {