updage

internal/scraper/external/mcpdocs.go

@@ -0,0 +1,222 @@
+package scraper
+
+import (
+	"context"
+	"crypto/sha256"
+	"encoding/hex"
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/yourorg/devour/pkg/mcpdocs"
+)
+
+type MCPDocsScraper struct {
+	config *Config
+	parser *mcpdocs.Parser
+	client *http.Client
+}
+
+func NewMCPDocsScraper(config *Config) *MCPDocsScraper {
+	return &MCPDocsScraper{
+		config: config,
+		parser: mcpdocs.NewParser(),
+		client: &http.Client{
+			Timeout: config.Timeout,
+		},
+	}
+}
+
+func (s *MCPDocsScraper) Scrape(ctx context.Context, source *Source) ([]*Document, error) {
+	var documents []*Document
+
+	if source.URL == "" {
+		return nil, fmt.Errorf("URL is required for MCP docs scraper")
+	}
+
+	html, err := s.fetchPage(ctx, source.URL)
+	if err != nil {
+		return nil, fmt.Errorf("failed to fetch page: %w", err)
+	}
+
+	server, err := s.parser.ParseServerPage(html, source.URL)
+	if err != nil {
+		return nil, fmt.Errorf("failed to parse MCP server page: %w", err)
+	}
+
+	mainDoc := s.serverToDocument(server, source.Name)
+	documents = append(documents, mainDoc)
+
+	for _, tool := range server.Tools {
+		doc := s.toolToDocument(tool, server, source.Name)
+		documents = append(documents, doc)
+	}
+
+	for _, res := range server.Resources {
+		doc := s.resourceToDocument(res, server, source.Name)
+		documents = append(documents, doc)
+	}
+
+	for _, prompt := range server.Prompts {
+		doc := s.promptToDocument(prompt, server, source.Name)
+		documents = append(documents, doc)
+	}
+
+	return documents, nil
+}
+
+func (s *MCPDocsScraper) 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 *MCPDocsScraper) 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 *MCPDocsScraper) generateHash(content string) string {
+	hash := sha256.Sum256([]byte(content))
+	return hex.EncodeToString(hash[:])
+}
+
+func (s *MCPDocsScraper) serverToDocument(server *mcpdocs.Server, sourceName string) *Document {
+	var content strings.Builder
+	fmt.Fprintf(&content, "# %s\n\n", server.Name)
+	fmt.Fprintf(&content, "%s\n", server.Description)
+
+	if len(server.Tools) > 0 {
+		fmt.Fprintf(&content, "\n## Tools (%d)\n", len(server.Tools))
+		for _, t := range server.Tools {
+			fmt.Fprintf(&content, "- `%s`: %s\n", t.Name, t.Description)
+		}
+	}
+
+	metadata := map[string]interface{}{
+		"server":   server.Name,
+		"category": server.Category,
+		"doc_url":  server.DocURL,
+		"doc_type": "mcp-server",
+	}
+
+	return &Document{
+		ID:        generateDocID(server.DocURL),
+		Source:    sourceName,
+		Type:      "mcp-server",
+		Title:     server.Name,
+		Content:   content.String(),
+		URL:       server.DocURL,
+		Metadata:  metadata,
+		Hash:      s.generateHash(content.String()),
+		Timestamp: time.Now(),
+	}
+}
+
+func (s *MCPDocsScraper) toolToDocument(tool *mcpdocs.Tool, server *mcpdocs.Server, sourceName string) *Document {
+	var content strings.Builder
+	fmt.Fprintf(&content, "# %s\n\n", tool.Name)
+	fmt.Fprintf(&content, "Server: %s\n\n", server.Name)
+	fmt.Fprintf(&content, "%s\n", tool.Description)
+
+	metadata := map[string]interface{}{
+		"server":   server.Name,
+		"tool":     tool.Name,
+		"doc_url":  tool.DocURL,
+		"doc_type": "mcp-tool",
+	}
+
+	return &Document{
+		ID:        generateDocID(tool.DocURL + "#" + tool.Name),
+		Source:    sourceName,
+		Type:      "mcp-tool",
+		Title:     fmt.Sprintf("%s.%s", server.Name, tool.Name),
+		Content:   content.String(),
+		URL:       tool.DocURL,
+		Metadata:  metadata,
+		Hash:      s.generateHash(content.String()),
+		Timestamp: time.Now(),
+	}
+}
+
+func (s *MCPDocsScraper) resourceToDocument(res *mcpdocs.Resource, server *mcpdocs.Server, sourceName string) *Document {
+	var content strings.Builder
+	fmt.Fprintf(&content, "# %s\n\n", res.Name)
+	fmt.Fprintf(&content, "Server: %s\n", server.Name)
+	fmt.Fprintf(&content, "URI: %s\n\n", res.URI)
+	fmt.Fprintf(&content, "%s\n", res.Description)
+
+	metadata := map[string]interface{}{
+		"server":   server.Name,
+		"resource": res.Name,
+		"uri":      res.URI,
+		"doc_url":  res.DocURL,
+		"doc_type": "mcp-resource",
+	}
+
+	return &Document{
+		ID:        generateDocID(res.DocURL + "#" + res.Name),
+		Source:    sourceName,
+		Type:      "mcp-resource",
+		Title:     res.Name,
+		Content:   content.String(),
+		URL:       res.DocURL,
+		Metadata:  metadata,
+		Hash:      s.generateHash(content.String()),
+		Timestamp: time.Now(),
+	}
+}
+
+func (s *MCPDocsScraper) promptToDocument(prompt *mcpdocs.Prompt, server *mcpdocs.Server, sourceName string) *Document {
+	var content strings.Builder
+	fmt.Fprintf(&content, "# %s\n\n", prompt.Name)
+	fmt.Fprintf(&content, "Server: %s\n\n", server.Name)
+	fmt.Fprintf(&content, "%s\n", prompt.Description)
+
+	metadata := map[string]interface{}{
+		"server":   server.Name,
+		"prompt":   prompt.Name,
+		"doc_url":  prompt.DocURL,
+		"doc_type": "mcp-prompt",
+	}
+
+	return &Document{
+		ID:        generateDocID(prompt.DocURL + "#" + prompt.Name),
+		Source:    sourceName,
+		Type:      "mcp-prompt",
+		Title:     prompt.Name,
+		Content:   content.String(),
+		URL:       prompt.DocURL,
+		Metadata:  metadata,
+		Hash:      s.generateHash(content.String()),
+		Timestamp: time.Now(),
+	}
+}