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<h1><a href="../../../../index.html">All files</a> / <a href="index.html">src/mcp-server/tools/utils</a> studyExtractors.ts</h1>
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">/**
* @fileoverview Study data extraction utilities for clinical trial tools.
* Provides functions to extract specific information from Study objects
* including locations, contact info, and study details.
*
* @module src/mcp-server/tools/utils/studyExtractors
*/
import type { Study } from '@/services/clinical-trials-gov/types.js';
/**
* Represents a study location with optional distance calculation.
*/
export interface StudyLocation {
facility?: string | undefined;
city?: string | undefined;
state?: string | undefined;
country?: string | undefined;
distance?: number | undefined;
}
/**
* Represents contact information for a study.
*/
export interface StudyContact {
name?: string | undefined;
phone?: string | undefined;
email?: string | undefined;
}
/**
* Represents key study details for eligibility matching.
*/
export interface StudyDetails {
phase?: string[] | undefined;
status: string;
enrollmentCount?: number | undefined;
sponsor?: string | undefined;
}
/**
* Patient location for filtering study sites.
*/
export interface PatientLocation {
country: string;
state?: string | undefined;
city?: string | undefined;
postalCode?: string | undefined;
}
/**
* Extracts relevant locations from a study based on patient location.
* Filters study locations to prioritize those matching the patient's location.
*
* @param study - The clinical trial study
* @param patientLocation - Patient's location for filtering
* @returns Array of relevant study locations
*
* @example
* extractRelevantLocations(study, { country: "United States", state: "California" })
* // returns locations in California, then other US locations
*/
export <span class="fstat-no" title="function not covered" >function extractRelevantLocations(</span>
<span class="cstat-no" title="statement not covered" > study: Study,</span>
<span class="cstat-no" title="statement not covered" > patientLocation: PatientLocation,</span>
<span class="cstat-no" title="statement not covered" >): StudyLocation[] {</span>
<span class="cstat-no" title="statement not covered" > const locations = study.protocolSection?.contactsLocationsModule?.locations;</span>
<span class="cstat-no" title="statement not covered" > if (!locations || locations.length === 0) return [];</span>
<span class="cstat-no" title="statement not covered" > const relevantLocations: StudyLocation[] = [];</span>
<span class="cstat-no" title="statement not covered" > for (const loc of locations) {</span>
// Only include if at least country matches
<span class="cstat-no" title="statement not covered" > if (loc.country) {</span>
<span class="cstat-no" title="statement not covered" > relevantLocations.push({</span>
<span class="cstat-no" title="statement not covered" > facility: (loc as { facility?: string }).facility,</span>
<span class="cstat-no" title="statement not covered" > city: loc.city,</span>
<span class="cstat-no" title="statement not covered" > state: loc.state,</span>
<span class="cstat-no" title="statement not covered" > country: loc.country,</span>
<span class="cstat-no" title="statement not covered" > });</span>
<span class="cstat-no" title="statement not covered" > }</span>
<span class="cstat-no" title="statement not covered" > }</span>
// Sort: exact city match, then state match, then country match
<span class="cstat-no" title="statement not covered" > relevantLocations.sort((a, b) => {</span>
<span class="cstat-no" title="statement not covered" > const aCity =</span>
<span class="cstat-no" title="statement not covered" > patientLocation.city &&</span>
<span class="cstat-no" title="statement not covered" > a.city?.toLowerCase() === patientLocation.city.toLowerCase();</span>
<span class="cstat-no" title="statement not covered" > const bCity =</span>
<span class="cstat-no" title="statement not covered" > patientLocation.city &&</span>
<span class="cstat-no" title="statement not covered" > b.city?.toLowerCase() === patientLocation.city.toLowerCase();</span>
<span class="cstat-no" title="statement not covered" > if (aCity && !bCity) return -1;</span>
<span class="cstat-no" title="statement not covered" > if (!aCity && bCity) return 1;</span>
<span class="cstat-no" title="statement not covered" > const aState =</span>
<span class="cstat-no" title="statement not covered" > patientLocation.state &&</span>
<span class="cstat-no" title="statement not covered" > a.state?.toLowerCase() === patientLocation.state.toLowerCase();</span>
<span class="cstat-no" title="statement not covered" > const bState =</span>
<span class="cstat-no" title="statement not covered" > patientLocation.state &&</span>
<span class="cstat-no" title="statement not covered" > b.state?.toLowerCase() === patientLocation.state.toLowerCase();</span>
<span class="cstat-no" title="statement not covered" > if (aState && !bState) return -1;</span>
<span class="cstat-no" title="statement not covered" > if (!aState && bState) return 1;</span>
<span class="cstat-no" title="statement not covered" > return 0;</span>
<span class="cstat-no" title="statement not covered" > });</span>
<span class="cstat-no" title="statement not covered" > return relevantLocations;</span>
<span class="cstat-no" title="statement not covered" >}</span>
/**
* Extracts contact information from a study.
*
* @param study - The clinical trial study
* @returns Contact information object or undefined
*
* @example
* extractContactInfo(study)
* // returns { name: "Dr. Smith", phone: "555-1234", email: "study@example.com" }
*/
export <span class="fstat-no" title="function not covered" >function extractContactInfo(study: Study): StudyContact | undefined {</span>
<span class="cstat-no" title="statement not covered" > const contacts = study.protocolSection?.contactsLocationsModule</span>
<span class="cstat-no" title="statement not covered" > ?.centralContacts as</span>
| Array<{ name?: string; phone?: string; email?: string }>
| undefined;
<span class="cstat-no" title="statement not covered" > if (!contacts || contacts.length === 0) {</span>
<span class="cstat-no" title="statement not covered" > return undefined;</span>
<span class="cstat-no" title="statement not covered" > }</span>
// Use the first central contact
<span class="cstat-no" title="statement not covered" > const primaryContact = contacts[0];</span>
<span class="cstat-no" title="statement not covered" > return {</span>
<span class="cstat-no" title="statement not covered" > name: primaryContact?.name,</span>
<span class="cstat-no" title="statement not covered" > phone: primaryContact?.phone,</span>
<span class="cstat-no" title="statement not covered" > email: primaryContact?.email,</span>
<span class="cstat-no" title="statement not covered" > };</span>
<span class="cstat-no" title="statement not covered" >}</span>
/**
* Extracts key study details for display and ranking.
*
* @param study - The clinical trial study
* @returns Study details object
*
* @example
* extractStudyDetails(study)
* // returns { phase: ["Phase 3"], status: "Recruiting", enrollmentCount: 500, sponsor: "NIH" }
*/
export <span class="fstat-no" title="function not covered" >function extractStudyDetails(study: Study): StudyDetails {</span>
<span class="cstat-no" title="statement not covered" > const statusModule = study.protocolSection?.statusModule;</span>
<span class="cstat-no" title="statement not covered" > const designModule = study.protocolSection?.designModule;</span>
<span class="cstat-no" title="statement not covered" > const sponsorModule = study.protocolSection?.sponsorCollaboratorsModule;</span>
<span class="cstat-no" title="statement not covered" > const enrollmentInfo = designModule?.enrollmentInfo as</span>
| { count?: number }
| undefined;
<span class="cstat-no" title="statement not covered" > return {</span>
<span class="cstat-no" title="statement not covered" > phase: designModule?.phases ?? undefined,</span>
<span class="cstat-no" title="statement not covered" > status: statusModule?.overallStatus ?? 'Unknown',</span>
<span class="cstat-no" title="statement not covered" > enrollmentCount: enrollmentInfo?.count,</span>
<span class="cstat-no" title="statement not covered" > sponsor: sponsorModule?.leadSponsor?.name,</span>
<span class="cstat-no" title="statement not covered" > };</span>
<span class="cstat-no" title="statement not covered" >}</span>
</pre></td></tr></table></pre>
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