updage

internal/scraper/external/javadocs.go

@@ -0,0 +1,254 @@
+package scraper
+
+import (
+	"context"
+	"crypto/sha256"
+	"encoding/hex"
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/yourorg/devour/pkg/javadocs"
+)
+
+type JavaDocsScraper struct {
+	config *Config
+	parser *javadocs.Parser
+	client *http.Client
+}
+
+func NewJavaDocsScraper(config *Config) *JavaDocsScraper {
+	return &JavaDocsScraper{
+		config: config,
+		parser: javadocs.NewParser(),
+		client: &http.Client{
+			Timeout: config.Timeout,
+		},
+	}
+}
+
+func (s *JavaDocsScraper) Scrape(ctx context.Context, source *Source) ([]*Document, error) {
+	var documents []*Document
+
+	if source.URL == "" {
+		return nil, fmt.Errorf("URL is required for Java docs scraper")
+	}
+
+	html, err := s.fetchPage(ctx, source.URL)
+	if err != nil {
+		return nil, fmt.Errorf("failed to fetch page: %w", err)
+	}
+
+	pkg, err := s.parser.ParsePackagePage(html, source.URL)
+	if err != nil {
+		return nil, fmt.Errorf("failed to parse package: %w", err)
+	}
+
+	mainDoc := s.packageToDocument(pkg, source.Name)
+	documents = append(documents, mainDoc)
+
+	for _, class := range pkg.Classes {
+		doc := s.classToDocument(class, pkg, source.Name)
+		documents = append(documents, doc)
+	}
+
+	for _, iface := range pkg.Interfaces {
+		doc := s.interfaceToDocument(iface, pkg, source.Name)
+		documents = append(documents, doc)
+	}
+
+	for _, enum := range pkg.Enums {
+		doc := s.enumToDocument(enum, pkg, source.Name)
+		documents = append(documents, doc)
+	}
+
+	for _, exc := range pkg.Exceptions {
+		doc := s.exceptionToDocument(exc, pkg, source.Name)
+		documents = append(documents, doc)
+	}
+
+	return documents, nil
+}
+
+func (s *JavaDocsScraper) DetectChanges(ctx context.Context, source *Source, lastHash string) (bool, string, error) {
+	html, err := s.fetchPage(ctx, source.URL)
+	if err != nil {
+		return false, "", err
+	}
+
+	hash := s.generateHash(html)
+	changed := hash != lastHash
+
+	return changed, hash, nil
+}
+
+func (s *JavaDocsScraper) fetchPage(ctx context.Context, url string) (string, error) {
+	req, err := http.NewRequestWithContext(ctx, "GET", url, nil)
+	if err != nil {
+		return "", err
+	}
+
+	req.Header.Set("User-Agent", s.config.UserAgent)
+
+	resp, err := s.client.Do(req)
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return "", fmt.Errorf("HTTP %d", resp.StatusCode)
+	}
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return "", err
+	}
+	return string(body), nil
+}
+
+func (s *JavaDocsScraper) generateHash(content string) string {
+	hash := sha256.Sum256([]byte(content))
+	return hex.EncodeToString(hash[:])
+}
+
+func (s *JavaDocsScraper) packageToDocument(pkg *javadocs.Package, sourceName string) *Document {
+	var content strings.Builder
+	fmt.Fprintf(&content, "# Package %s\n\n", pkg.Name)
+	fmt.Fprintf(&content, "%s\n", pkg.Doc)
+
+	metadata := map[string]interface{}{
+		"package":  pkg.Name,
+		"doc_url":  pkg.DocURL,
+		"doc_type": "java-package",
+	}
+
+	return &Document{
+		ID:        generateDocID(pkg.DocURL),
+		Source:    sourceName,
+		Type:      "java-package",
+		Title:     pkg.Name,
+		Content:   content.String(),
+		URL:       pkg.DocURL,
+		Metadata:  metadata,
+		Hash:      s.generateHash(content.String()),
+		Timestamp: time.Now(),
+	}
+}
+
+func (s *JavaDocsScraper) classToDocument(class *javadocs.Class, pkg *javadocs.Package, sourceName string) *Document {
+	var content strings.Builder
+	fmt.Fprintf(&content, "# %s\n\n", class.QualifiedName)
+	fmt.Fprintf(&content, "Kind: %s\n\n", class.Kind)
+	fmt.Fprintf(&content, "%s\n", class.Doc)
+
+	if len(class.Methods) > 0 {
+		fmt.Fprintf(&content, "\n## Methods\n")
+		for _, m := range class.Methods {
+			fmt.Fprintf(&content, "- `%s`\n", m.Signature)
+		}
+	}
+
+	metadata := map[string]interface{}{
+		"package":        pkg.Name,
+		"qualified_name": class.QualifiedName,
+		"kind":           string(class.Kind),
+		"doc_url":        class.DocURL,
+	}
+
+	return &Document{
+		ID:        generateDocID(class.DocURL),
+		Source:    sourceName,
+		Type:      "java-class",
+		Title:     class.QualifiedName,
+		Content:   content.String(),
+		URL:       class.DocURL,
+		Metadata:  metadata,
+		Hash:      s.generateHash(content.String()),
+		Timestamp: time.Now(),
+	}
+}
+
+func (s *JavaDocsScraper) interfaceToDocument(iface *javadocs.Class, pkg *javadocs.Package, sourceName string) *Document {
+	var content strings.Builder
+	fmt.Fprintf(&content, "# %s (interface)\n\n", iface.QualifiedName)
+	fmt.Fprintf(&content, "%s\n", iface.Doc)
+
+	metadata := map[string]interface{}{
+		"package":        pkg.Name,
+		"qualified_name": iface.QualifiedName,
+		"kind":           "interface",
+		"doc_url":        iface.DocURL,
+	}
+
+	return &Document{
+		ID:        generateDocID(iface.DocURL),
+		Source:    sourceName,
+		Type:      "java-interface",
+		Title:     iface.QualifiedName,
+		Content:   content.String(),
+		URL:       iface.DocURL,
+		Metadata:  metadata,
+		Hash:      s.generateHash(content.String()),
+		Timestamp: time.Now(),
+	}
+}
+
+func (s *JavaDocsScraper) enumToDocument(enum *javadocs.Enum, pkg *javadocs.Package, sourceName string) *Document {
+	var content strings.Builder
+	fmt.Fprintf(&content, "# %s (enum)\n\n", enum.QualifiedName)
+	fmt.Fprintf(&content, "%s\n", enum.Doc)
+
+	if len(enum.Constants) > 0 {
+		fmt.Fprintf(&content, "\n## Constants\n")
+		for _, c := range enum.Constants {
+			fmt.Fprintf(&content, "- `%s`\n", c.Name)
+		}
+	}
+
+	metadata := map[string]interface{}{
+		"package":        pkg.Name,
+		"qualified_name": enum.QualifiedName,
+		"kind":           "enum",
+		"doc_url":        enum.DocURL,
+	}
+
+	return &Document{
+		ID:        generateDocID(enum.DocURL),
+		Source:    sourceName,
+		Type:      "java-enum",
+		Title:     enum.QualifiedName,
+		Content:   content.String(),
+		URL:       enum.DocURL,
+		Metadata:  metadata,
+		Hash:      s.generateHash(content.String()),
+		Timestamp: time.Now(),
+	}
+}
+
+func (s *JavaDocsScraper) exceptionToDocument(exc *javadocs.Class, pkg *javadocs.Package, sourceName string) *Document {
+	var content strings.Builder
+	fmt.Fprintf(&content, "# %s (exception)\n\n", exc.QualifiedName)
+	fmt.Fprintf(&content, "%s\n", exc.Doc)
+
+	metadata := map[string]interface{}{
+		"package":        pkg.Name,
+		"qualified_name": exc.QualifiedName,
+		"kind":           "exception",
+		"doc_url":        exc.DocURL,
+	}
+
+	return &Document{
+		ID:        generateDocID(exc.DocURL),
+		Source:    sourceName,
+		Type:      "java-exception",
+		Title:     exc.QualifiedName,
+		Content:   content.String(),
+		URL:       exc.DocURL,
+		Metadata:  metadata,
+		Hash:      s.generateHash(content.String()),
+		Timestamp: time.Now(),
+	}
+}