@kimsungwhee/apple-docs-mcp
Version:
MCP server for Apple Developer Documentation - Search iOS/macOS/SwiftUI/UIKit docs, WWDC videos, Swift/Objective-C APIs & code examples in Claude, Cursor & AI assistants
487 lines • 20.8 kB
JavaScript
import { apiCache, generateEnhancedCacheKey } from '../utils/cache.js';
import { convertToJsonApiUrl } from '../utils/url-converter.js';
import { httpClient } from '../utils/http-client.js';
import { logger } from '../utils/logger.js';
import { PROCESSING_LIMITS } from '../utils/constants.js';
import { formatDocumentHeader, formatDocumentAbstract, formatPlatformAvailability, formatSeeAlsoSection, isSpecificAPIDocument, } from './doc-formatter.js';
/**
* Format JSON documentation content with enhanced analysis
*/
function formatJsonDocumentation(jsonData, originalUrl, options = {}) {
let content = '';
// Add header with title and status
content += formatDocumentHeader(jsonData);
// Add abstract
content += formatDocumentAbstract(jsonData);
// Check if this is a specific API/symbol or an API collection
if (isSpecificAPIDocument(jsonData)) {
content += formatSpecificAPIContent(jsonData);
}
else {
content += formatAPICollectionContent(jsonData);
}
// Add platform availability
content += formatPlatformAvailability(jsonData);
// Add See Also section
content += formatSeeAlsoSection(jsonData);
// Add enhanced analysis sections
if (options.includeRelatedApis) {
const relatedApis = extractRelatedApis(jsonData);
if (relatedApis.length > 0) {
content += formatRelatedApisSection(relatedApis);
}
}
if (options.includeReferences) {
const references = extractReferences(jsonData);
if (references.length > 0) {
content += formatReferencesSection(references);
}
}
if (options.includeSimilarApis) {
const similarApis = extractSimilarApis(jsonData);
if (similarApis.length > 0) {
content += formatSimilarApisSection(similarApis);
}
}
if (options.includePlatformAnalysis) {
const platformAnalysis = analyzePlatformCompatibility(jsonData);
if (platformAnalysis) {
content += formatPlatformAnalysisSection(platformAnalysis);
}
}
// Add link to original documentation
content += `---\n\n[View full documentation on Apple Developer](${originalUrl})`;
return {
content: [
{
type: 'text',
text: content,
},
],
};
}
/**
* Format specific API content (methods, properties, etc.)
*/
function formatSpecificAPIContent(jsonData) {
let content = '';
if (jsonData.primaryContentSections) {
jsonData.primaryContentSections.forEach((section) => {
const typedSection = section;
switch (typedSection.kind) {
case 'declarations':
content += '## Declaration\n\n';
if (typedSection.declarations?.[0]?.tokens) {
const declaration = typedSection.declarations[0].tokens
.map((token) => token.text ?? '')
.join('');
content += `\`\`\`swift\n${declaration}\`\`\`\n\n`;
}
break;
case 'parameters':
content += '## Parameters\n\n';
if (typedSection.parameters && Array.isArray(typedSection.parameters)) {
typedSection.parameters.forEach((param) => {
content += `**${param.name}**: `;
if (param.content?.[0]?.inlineContent) {
const paramDesc = param.content[0].inlineContent
.map((inline) => inline?.text ?? '')
.join('');
content += `${paramDesc}\n\n`;
}
});
}
break;
case 'content':
if (typedSection.content && Array.isArray(typedSection.content)) {
typedSection.content.forEach((item) => {
const contentItem = item;
if (contentItem.type === 'heading') {
content += `## ${contentItem.text}\n\n`;
}
else if (contentItem.type === 'paragraph' && contentItem.inlineContent) {
const paragraphText = contentItem.inlineContent
.map((inline) => {
if (inline.type === 'text') {
return inline.text ?? '';
}
else if (inline.type === 'codeVoice') {
return `\`${(inline).code ?? ''}\``;
}
else if (inline.type === 'reference' && (inline).identifier) {
const apiName = (inline).identifier.split('/').pop() ?? (inline).identifier;
return `\`${apiName}\``;
}
return '';
})
.join('');
if (paragraphText.trim()) {
content += `${paragraphText}\n\n`;
}
}
else if (contentItem.type === 'codeListing' && contentItem.code) {
content += `\`\`\`${contentItem.syntax ?? 'swift'}\n${contentItem.code.join('\n')}\`\`\`\n\n`;
}
});
}
break;
}
});
}
return content;
}
/**
* Format API collection content (overview + API lists)
*/
function formatAPICollectionContent(jsonData) {
let content = '';
// Add primary content sections (Overview)
if (jsonData.primaryContentSections && Array.isArray(jsonData.primaryContentSections)) {
content += '## Overview\n\n';
jsonData.primaryContentSections.forEach((section) => {
const typedSection = section;
if (typedSection.kind === 'content' && typedSection.content) {
typedSection.content.forEach((item) => {
if (item.type === 'paragraph' && item.inlineContent) {
const paragraphText = item.inlineContent
.map((inline) => {
if (inline.type === 'text') {
return inline.text ?? '';
}
else if (inline.type === 'reference' && inline.identifier) {
// Extract API name from identifier
const apiName = inline.identifier.split('/').pop() ?? inline.identifier;
return `\`${apiName}\``;
}
return '';
})
.join('');
if (paragraphText.trim()) {
content += `${paragraphText}\n\n`;
}
}
else if (item.type === 'unorderedList' && item.items) {
item.items.forEach((listItem) => {
if (listItem.content?.[0]?.inlineContent) {
const listText = listItem.content[0].inlineContent
.map((inline) => {
if (inline.type === 'text') {
return inline.text ?? '';
}
else if (inline.type === 'reference' && inline.identifier) {
const apiName = inline.identifier.split('/').pop() ?? inline.identifier;
return `\`${apiName}\``;
}
return '';
})
.join('');
if (listText.trim()) {
content += `- ${listText}\n`;
}
}
});
content += '\n';
}
});
}
});
}
// Add topic sections (API Collections) - this is the most important part
if (jsonData.topicSections && Array.isArray(jsonData.topicSections)) {
content += '## APIs and Functions\n\n';
jsonData.topicSections.forEach((section) => {
if (section.title && section.identifiers && Array.isArray(section.identifiers)) {
content += `### ${section.title}\n\n`;
section.identifiers.forEach((identifier) => {
// Extract the API name from the identifier
const apiName = identifier.split('/').pop() ?? identifier;
// Create a documentation URL for the API
const apiPath = identifier.replace('doc://com.apple.SwiftUI/documentation/', '');
const apiUrl = `https://developer.apple.com/documentation/${apiPath}`;
content += `- [\`${apiName}\`](${apiUrl})\n`;
});
content += '\n';
}
});
}
return content;
}
/**
* Fetch JSON documentation from Apple Developer Documentation with optional enhanced analysis
* @param url The URL of the documentation page
* @param options Enhanced analysis options
* @param maxDepth Maximum recursion depth (to prevent infinite loops)
* @returns Formatted documentation content
*/
export async function fetchAppleDocJson(url, options = {}, maxDepth = 2) {
// Backward compatibility: if second param is number, treat as maxDepth
if (typeof options === 'number') {
maxDepth = options;
options = {};
}
try {
// Validate that this is an Apple Developer URL
if (!url.includes('developer.apple.com')) {
throw new Error('URL must be from developer.apple.com');
}
// Convert web URL to JSON API URL if needed
const jsonApiUrl = url.includes('.json') ? url : convertToJsonApiUrl(url);
if (!jsonApiUrl) {
throw new Error('Invalid Apple Developer Documentation URL');
}
// Generate cache key including options
const cacheKey = generateEnhancedCacheKey(jsonApiUrl, options);
// Try to get from cache first
const cachedResult = apiCache.get(cacheKey);
if (cachedResult) {
logger.debug(`Cache hit for: ${jsonApiUrl}`);
return cachedResult;
}
logger.info(`Fetching Apple doc JSON from: ${jsonApiUrl}`);
// Fetch the documentation JSON using HTTP client
const jsonData = await httpClient.getJson(jsonApiUrl);
// If the JSON doesn't have primary content but has references to other docs,
// fetch the first reference if we haven't exceeded max depth
if (!jsonData.primaryContentSections &&
jsonData.references &&
Object.keys(jsonData.references).length > 0 &&
maxDepth > 0) {
// Find the main reference to follow (usually first in the list)
const mainReferenceKey = Object.keys(jsonData.references)[0];
const mainReference = jsonData.references[mainReferenceKey];
if (mainReference?.url) {
// Recursively fetch the referenced documentation
// Remove leading /documentation/ if present to avoid duplication
let refPath = mainReference.url;
if (refPath.startsWith('/documentation/')) {
refPath = refPath.substring('/documentation/'.length);
}
else if (refPath.startsWith('/')) {
refPath = refPath.substring(1);
}
const refUrl = `https://developer.apple.com/tutorials/data/documentation/${refPath}.json`;
return await fetchAppleDocJson(refUrl, options, maxDepth - 1);
}
}
// Format the JSON documentation with enhanced analysis
const result = formatJsonDocumentation(jsonData, url, options);
// Cache the result
apiCache.set(cacheKey, result);
return result;
}
catch (error) {
let errorMessage;
// Handle AppError objects from http-client
if (error && typeof error === 'object' && 'message' in error) {
errorMessage = error.message;
}
else if (error instanceof Error) {
errorMessage = error.message;
}
else {
errorMessage = String(error);
}
logger.error('Error fetching Apple doc JSON:', errorMessage);
return {
content: [
{
type: 'text',
text: `Error: Failed to get Apple doc content: ${errorMessage}\n\nPlease try accessing the documentation directly at: ${url}`,
},
],
isError: true,
};
}
}
/**
* Extract related APIs from JSON data
*/
function extractRelatedApis(jsonData) {
const relatedApis = [];
// From relationshipsSections
if (jsonData.relationshipsSections) {
for (const section of jsonData.relationshipsSections) {
if (section.identifiers) {
for (const identifier of section.identifiers.slice(0, PROCESSING_LIMITS.MAX_RELATED_APIS_PER_SECTION)) {
if (jsonData.references?.[identifier]) {
const ref = jsonData.references[identifier];
relatedApis.push({
title: ref.title ?? 'Unknown',
url: ref.url ? (ref.url.startsWith('http') ? ref.url : `https://developer.apple.com${ref.url}`) : '#',
relationship: section.title ?? 'Related',
});
}
}
}
}
}
// From seeAlsoSections
if (jsonData.seeAlsoSections) {
for (const section of jsonData.seeAlsoSections) {
if (section.identifiers) {
for (const identifier of section.identifiers.slice(0, PROCESSING_LIMITS.MAX_RELATED_APIS_PER_SECTION)) {
if (jsonData.references?.[identifier]) {
const ref = jsonData.references[identifier];
relatedApis.push({
title: ref.title ?? 'Unknown',
url: ref.url ? (ref.url.startsWith('http') ? ref.url : `https://developer.apple.com${ref.url}`) : '#',
relationship: `See Also: ${section.title ?? 'Related'}`,
});
}
}
}
}
}
return relatedApis.slice(0, PROCESSING_LIMITS.MAX_DOC_FETCHER_RELATED_APIS); // Limit results
}
/**
* Extract references from JSON data
*/
function extractReferences(jsonData) {
const references = [];
if (jsonData.references) {
const refEntries = Object.entries(jsonData.references).slice(0, PROCESSING_LIMITS.MAX_DOC_FETCHER_REFERENCES); // Limit
for (const [, ref] of refEntries) {
references.push({
title: ref.title ?? 'Unknown',
url: ref.url ? (ref.url.startsWith('http') ? ref.url : `https://developer.apple.com${ref.url}`) : '#',
type: ref.role ?? ref.kind ?? 'unknown',
abstract: ref.abstract
? ref.abstract.map((a) => a?.text ?? '').join(' ').trim()
: undefined,
});
}
}
return references;
}
/**
* Extract similar APIs from JSON data
*/
function extractSimilarApis(jsonData) {
const similarApis = [];
// From topicSections
if (jsonData.topicSections) {
for (const section of jsonData.topicSections) {
if (section.identifiers) {
for (const identifier of section.identifiers.slice(0, PROCESSING_LIMITS.MAX_RELATED_APIS_PER_SECTION)) {
if (jsonData.references?.[identifier]) {
const ref = jsonData.references[identifier];
similarApis.push({
title: ref.title ?? 'Unknown',
url: ref.url ? (ref.url.startsWith('http') ? ref.url : `https://developer.apple.com${ref.url}`) : '#',
category: section.title ?? 'Related',
});
}
}
}
}
}
return similarApis.slice(0, PROCESSING_LIMITS.MAX_DOC_FETCHER_SIMILAR_APIS); // Limit results
}
/**
* Analyze platform compatibility
*/
function analyzePlatformCompatibility(jsonData) {
if (!jsonData.metadata?.platforms) {
return null;
}
const platforms = jsonData.metadata.platforms;
const supportedPlatforms = platforms.map((p) => p.name).join(', ');
const betaPlatforms = platforms.filter((p) => p.beta).map((p) => p.name).filter((name) => name !== undefined);
const deprecatedPlatforms = platforms.filter((p) => p.deprecated).map((p) => p.name).filter((name) => name !== undefined);
return {
supportedPlatforms,
betaPlatforms,
deprecatedPlatforms,
crossPlatform: platforms.length > 1,
platforms,
};
}
/**
* Format related APIs section
*/
function formatRelatedApisSection(relatedApis) {
let content = '\n## Related APIs\n\n';
for (const api of relatedApis) {
content += `- [**${api.title}**](${api.url}) - *${api.relationship}*\n`;
}
return content + '\n';
}
/**
* Format references section
*/
function formatReferencesSection(references) {
let content = '\n## Key References\n\n';
// Group by type
const groupedRefs = {};
for (const ref of references) {
if (!groupedRefs[ref.type]) {
groupedRefs[ref.type] = [];
}
groupedRefs[ref.type].push(ref);
}
for (const [type, refs] of Object.entries(groupedRefs)) {
content += `### ${type.charAt(0).toUpperCase() + type.slice(1)}s\n\n`;
for (const ref of refs.slice(0, PROCESSING_LIMITS.MAX_DOC_FETCHER_REFS_PER_TYPE)) {
content += `- [**${ref.title}**](${ref.url})`;
if (ref.abstract) {
content += ` - ${ref.abstract.substring(0, 100)}${ref.abstract.length > 100 ? '...' : ''}`;
}
content += '\n';
}
content += '\n';
}
return content;
}
/**
* Format similar APIs section
*/
function formatSimilarApisSection(similarApis) {
let content = '\n## Similar APIs\n\n';
// Group by category
const groupedApis = {};
for (const api of similarApis) {
if (!groupedApis[api.category]) {
groupedApis[api.category] = [];
}
groupedApis[api.category].push(api);
}
for (const [category, apis] of Object.entries(groupedApis)) {
content += `### ${category}\n\n`;
for (const api of apis) {
content += `- [**${api.title}**](${api.url})\n`;
}
content += '\n';
}
return content;
}
/**
* Format platform analysis section
*/
function formatPlatformAnalysisSection(analysis) {
let content = '\n## Platform Compatibility Analysis\n\n';
content += `**Supported Platforms:** ${analysis.supportedPlatforms}\n`;
content += `**Cross-Platform Support:** ${analysis.crossPlatform ? 'Yes' : 'No'}\n`;
if (analysis.betaPlatforms.length > 0) {
content += `**Beta Platforms:** ${analysis.betaPlatforms.join(', ')}\n`;
}
if (analysis.deprecatedPlatforms.length > 0) {
content += `**Deprecated Platforms:** ${analysis.deprecatedPlatforms.join(', ')}\n`;
}
content += '\n**Detailed Platform Information:**\n\n';
for (const platform of analysis.platforms ?? []) {
content += `- **${platform.name}**`;
if (platform.introducedAt) {
content += ` ${platform.introducedAt}+`;
}
if (platform.beta) {
content += ' (Beta)';
}
if (platform.deprecated) {
content += ' (Deprecated)';
}
content += '\n';
}
return content + '\n';
}
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