Add OpenSearch and SearchPage functionality for DuckDuckGo

Introduced the `OpenSearch` method and `SearchPage` interface to streamline search operations and allow for loading more results dynamically. Updated dependencies and modified the DuckDuckGo CLI to utilize these enhancements.

go.mod

@@ -3,19 +3,19 @@ module gitea.stevedudenhoeffer.com/steve/go-extractor
 go 1.23.2
 
 require (
-	github.com/go-shiori/go-readability v0.0.0-20241012063810-92284fa8a71f
-	github.com/playwright-community/playwright-go v0.4802.0
+	github.com/go-shiori/go-readability v0.0.0-20250217085726-9f5bf5ca7612
+	github.com/playwright-community/playwright-go v0.5001.0
 	github.com/urfave/cli/v3 v3.0.0-beta1
-	golang.org/x/text v0.21.0
+	golang.org/x/text v0.23.0
 )
 
 require (
-	github.com/andybalholm/cascadia v1.3.2 // indirect
+	github.com/andybalholm/cascadia v1.3.3 // indirect
 	github.com/araddon/dateparse v0.0.0-20210429162001-6b43995a97de // indirect
-	github.com/deckarep/golang-set/v2 v2.6.0 // indirect
-	github.com/go-jose/go-jose/v3 v3.0.3 // indirect
+	github.com/deckarep/golang-set/v2 v2.8.0 // indirect
+	github.com/go-jose/go-jose/v3 v3.0.4 // indirect
 	github.com/go-shiori/dom v0.0.0-20230515143342-73569d674e1c // indirect
 	github.com/go-stack/stack v1.8.1 // indirect
 	github.com/gogs/chardet v0.0.0-20211120154057-b7413eaefb8f // indirect
-	golang.org/x/net v0.32.0 // indirect
+	golang.org/x/net v0.37.0 // indirect
 )

node.go

@@ -1,6 +1,9 @@
 package extractor
 
 import (
+	"fmt"
+	"strings"
+
 	"github.com/playwright-community/playwright-go"
 )
 
@@ -17,6 +20,9 @@ type Node interface {
 	SelectFirst(selector string) Node
 
 	ForEach(selector string, fn func(Node) error) error
+
+	SetHidden(val bool) error
+	SetAttribute(name, value string) error
 }
 
 type node struct {
@@ -79,3 +85,30 @@ func (n node) ForEach(selector string, fn func(Node) error) error {
 
 	return nil
 }
+
+func (n node) SetHidden(val bool) error {
+	visible, err := n.locator.IsVisible()
+	if err != nil {
+		return fmt.Errorf("error checking visibility: %w", err)
+	}
+	if visible == !val {
+		return nil
+	}
+
+	// Set the hidden property
+	_, err = n.locator.Evaluate(fmt.Sprintf(`(element) => element.hidden = %t;`, val), nil)
+	if err != nil {
+		return fmt.Errorf("error setting hidden property: %w", err)
+	}
+
+	return nil
+}
+
+func escapeJavaScript(s string) string {
+	return strings.Replace(strings.Replace(s, "\\", "\\\\", -1), "'", "\\'", -1)
+}
+
+func (n node) SetAttribute(name, value string) error {
+	_, err := n.locator.Evaluate(fmt.Sprintf(`(element) => element.setAttribute('%s', '%s');`, escapeJavaScript(name), escapeJavaScript(value)), nil)
+	return err
+}

playwright.go

@@ -36,6 +36,10 @@ const (
 	PlayWrightBrowserSelectionWebKit   PlayWrightBrowserSelection = "webkit"
 )
 
+type Size struct {
+	Width  int
+	Height int
+}
 type PlayWrightBrowserOptions struct {
 	UserAgent string                     // If empty, defaults to "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:133.0) Gecko/20100101 Firefox/133.0"
 	Browser   PlayWrightBrowserSelection // If unset defaults to Firefox.
@@ -46,6 +50,9 @@ type PlayWrightBrowserOptions struct {
 	CookieJar
 
 	ShowBrowser bool // If false, browser will be headless
+
+	Dimensions Size
+	DarkMode   bool
 }
 
 func cookieToPlaywrightOptionalCookie(cookie Cookie) playwright.OptionalCookie {
@@ -76,6 +83,7 @@ func NewPlayWrightBrowser(opts ...PlayWrightBrowserOptions) (Browser, error) {
 		UserAgent: "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:133.0) Gecko/20100101 Firefox/133.0",
 		Browser:   PlayWrightBrowserSelectionFirefox,
 		Timeout:   &thirtySeconds,
+		DarkMode:  false,
 	}
 
 	for _, o := range opts {
@@ -91,6 +99,13 @@ func NewPlayWrightBrowser(opts ...PlayWrightBrowserOptions) (Browser, error) {
 		if o.CookieJar != nil {
 			opt.CookieJar = o.CookieJar
 		}
+		if o.Dimensions.Width > 0 && o.Dimensions.Height > 0 {
+			opt.Dimensions = o.Dimensions
+		}
+		if o.DarkMode {
+			opt.DarkMode = true
+		}
+
 		opt.ShowBrowser = o.ShowBrowser
 	}
 
@@ -133,8 +148,26 @@ func NewPlayWrightBrowser(opts ...PlayWrightBrowserOptions) (Browser, error) {
 		return nil, err
 	}
 
+	var viewport *playwright.Size
+	if opt.Dimensions.Width > 0 && opt.Dimensions.Height > 0 {
+		viewport = &playwright.Size{
+			Width:  opt.Dimensions.Width,
+			Height: opt.Dimensions.Height,
+		}
+	}
+
+	var scheme *playwright.ColorScheme
+
+	if opt.DarkMode {
+		scheme = playwright.ColorSchemeDark
+	} else {
+		scheme = playwright.ColorSchemeNoPreference
+	}
+
 	c, err := browser.NewContext(playwright.BrowserNewContextOptions{
-		UserAgent: playwright.String(opt.UserAgent),
+		UserAgent:   playwright.String(opt.UserAgent),
+		Viewport:    viewport,
+		ColorScheme: scheme,
 	})
 	if err != nil {
 		return nil, err

sites/duckduckgo/cmd/duckduckgo/main.go

@@ -3,11 +3,11 @@ package main
 import (
 	"context"
 	"fmt"
+	"github.com/urfave/cli/v3"
 	"io"
 	"os"
 	"strings"
-
-	"github.com/urfave/cli/v3"
+	"time"
 
 	"gitea.stevedudenhoeffer.com/steve/go-extractor/cmd/browser/pkg/browser"
 	"gitea.stevedudenhoeffer.com/steve/go-extractor/sites/duckduckgo"
@@ -58,6 +58,7 @@ func deferClose(cl io.Closer) {
 func main() {
 	var flags []cli.Flag
 
+	flags = append(flags, browser.Flags...)
 	flags = append(flags, Flags...)
 
 	cli := &cli.Command{
@@ -81,13 +82,24 @@ func main() {
 				return fmt.Errorf("failed to create browser: %w", err)
 			}
 
-			res, err := c.Search(ctx, b, query)
-
+			search, err := c.OpenSearch(ctx, b, query)
 			if err != nil {
-				return fmt.Errorf("failed to search: %w", err)
+				return fmt.Errorf("failed to open search: %w", err)
 			}
 
-			fmt.Println(res)
+			defer deferClose(search)
+
+			res := search.GetResults()
+			fmt.Println("Results:", res)
+
+			err = search.LoadMore()
+			if err != nil {
+				return fmt.Errorf("failed to load more: %w", err)
+			}
+
+			time.Sleep(2 * time.Second)
+			res = search.GetResults()
+			fmt.Println("Results:", res)
 
 			return nil
 		},

sites/duckduckgo/duckduckgo.go

@@ -77,6 +77,21 @@ func deferClose(cl io.Closer) {
 	}
 }
 
+func (c Config) OpenSearch(ctx context.Context, b extractor.Browser, query string) (SearchPage, error) {
+	u := c.ToSearchURL(query)
+
+	slog.Info("searching", "url", u, "query", query, "config", c, "browser", b)
+	doc, err := b.Open(ctx, u.String(), extractor.OpenPageOptions{})
+	if err != nil {
+		if doc != nil {
+			_ = doc.Close()
+		}
+		return nil, fmt.Errorf("failed to open url: %w", err)
+	}
+
+	return searchPage{doc}, nil
+}
+
 func (c Config) Search(ctx context.Context, b extractor.Browser, query string) ([]Result, error) {
 	u := c.ToSearchURL(query)
 

sites/duckduckgo/page.go

@@ -0,0 +1,68 @@
+package duckduckgo
+
+import (
+	"fmt"
+	"gitea.stevedudenhoeffer.com/steve/go-extractor"
+	"io"
+	"log/slog"
+)
+
+type SearchPage interface {
+	io.Closer
+	GetResults() []Result
+	LoadMore() error
+}
+
+type searchPage struct {
+	doc extractor.Document
+}
+
+func (s searchPage) GetResults() []Result {
+	var res []Result
+	var err error
+
+	err = s.doc.ForEach(`article[id^="r1-"]`, func(n extractor.Node) error {
+		var r Result
+
+		links := n.Select(`a[href][target="_self"]`)
+
+		if len(links) == 0 {
+			return nil
+		}
+
+		r.URL, err = links[0].Attr(`href`)
+
+		if err != nil {
+			return fmt.Errorf("failed to get link: %w", err)
+		}
+
+		titles := n.Select("h2")
+
+		if len(titles) != 0 {
+			r.Title, _ = titles[0].Text()
+		}
+
+		descriptions := n.Select("span > span")
+
+		if len(descriptions) != 0 {
+			r.Description, _ = descriptions[0].Text()
+		}
+
+		res = append(res, r)
+
+		return nil
+	})
+
+	return res
+}
+
+func (s searchPage) LoadMore() error {
+	return s.doc.ForEach(`button#more-results`, func(n extractor.Node) error {
+		slog.Info("clicking load more", "node", n)
+		return n.Click()
+	})
+}
+
+func (s searchPage) Close() error {
+	return s.doc.Close()
+}