Display sources and links to non-image files in details panel (#210)

src/details/additional-files.tsx

@@ -0,0 +1,29 @@
+import {List} from 'semantic-ui-react';
+
+export interface FileEntry {
+  url: string;
+  filename?: string;
+}
+
+interface Props {
+  files?: FileEntry[];
+}
+
+export function AdditionalFiles({files}: Props) {
+  if (!files?.length) return null;
+
+  return (
+    <List>
+      {files.map((file, index) => (
+        <List.Item key={index}>
+          <List.Icon verticalAlign="middle" name="circle" size="tiny" />
+          <List.Content>
+            <a target="_blank" href={file.url} rel="noopener noreferrer">
+              {file.filename || file.url.split('/').pop() || file.url}
+            </a>
+          </List.Content>
+        </List.Item>
+      ))}
+    </List>
+  );
+}

src/details/details.tsx

@@ -8,9 +8,13 @@ import {
   getData,
   getFileName,
   getImageFileEntry,
+  getNonImageFileEntry,
+  mapToSource,
 } from '../util/gedcom_util';
+import {AdditionalFiles} from './additional-files';
 import {Events} from './events';
 import {MultilineText} from './multiline-text';
+import {Sources} from './sources';
 import {TranslatedTag} from './translated-tag';
 import {WrappedImage} from './wrapped-image';
 
@@ -55,23 +59,95 @@ function dataDetails(entry: GedcomEntry) {
   );
 }
 
-function fileDetails(objectEntry: GedcomEntry) {
+function imageDetails(objectEntryReference: GedcomEntry, gedcom: GedcomData) {
-  const imageFileEntry = getImageFileEntry(objectEntry);
+  const imageEntry = dereference(
+    objectEntryReference,
+    gedcom,
+    (gedcom) => gedcom.other,
+  );
 
-  return imageFileEntry ? (
+  const imageFileEntry = getImageFileEntry(imageEntry);
+
+  if (!imageFileEntry || !hasData(imageEntry)) {
+    return null;
+  }
+
+  return (
     <div className="person-image">
       <WrappedImage
         url={imageFileEntry.data}
         filename={getFileName(imageFileEntry) || ''}
       />
     </div>
-  ) : null;
+  );
 }
 
-function noteDetails(entry: GedcomEntry) {
+function sourceDetails(
+  sourceReferenceEntries: GedcomEntry[],
+  gedcom: GedcomData,
+) {
+  const sources = sourceReferenceEntries.map((sourceEntryReference) =>
+    mapToSource(sourceEntryReference, gedcom),
+  );
+
+  if (!sources.length) {
+    return null;
+  }
+
+  return (
+    <>
+      <div className="item-header">
+        <Header as="span" size="small">
+          <TranslatedTag tag="SOUR" />
+        </Header>
+      </div>
+      <Sources sources={sources} />
+    </>
+  );
+}
+
+function fileDetails(objectEntries: GedcomEntry[], gedcom: GedcomData) {
+  const files = objectEntries
+    .map((objectEntry) =>
+      dereference(objectEntry, gedcom, (gedcom) => gedcom.other),
+    )
+    .map((objectEntry) => getNonImageFileEntry(objectEntry))
+    .filter((objectEntry): objectEntry is GedcomEntry => !!objectEntry)
+    .map((fileEntry) => ({
+      url: fileEntry.data,
+      filename: getFileName(fileEntry),
+    }));
+
+  if (!files.length) {
+    return null;
+  }
+
+  return (
+    <>
+      <div className="item-header">
+        <Header as="span" size="small">
+          <TranslatedTag tag="OBJE" />
+        </Header>
+      </div>
+      <AdditionalFiles files={files} />
+    </>
+  );
+}
+
+function noteDetails(noteEntryReference: GedcomEntry, gedcom: GedcomData) {
+  const noteEntry = dereference(
+    noteEntryReference,
+    gedcom,
+    (gedcom) => gedcom.other,
+  );
+
+  if (!noteEntry || !hasData(noteEntry)) {
+    return null;
+  }
+
   return (
     <MultilineText
-      lines={getData(entry).map((line, index) => (
+      lines={getData(noteEntry).map((line, index) => (
         <i key={index}>{line}</i>
       ))}
     />
@@ -103,15 +179,19 @@ function nameDetails(entry: GedcomEntry) {
   );
 }
 
-function getDetails(
+function getSectionForEachMatchingEntry(
   entries: GedcomEntry[],
+  gedcom: GedcomData,
   tags: string[],
-  detailsFunction: (entry: GedcomEntry) => React.ReactNode | null,
+  detailsFunction: (
+    entry: GedcomEntry,
+    gedcom: GedcomData,
+  ) => React.ReactNode | null,
 ): React.ReactNode[] {
   return flatMap(tags, (tag) =>
     entries
       .filter((entry) => entry.tag === tag)
-      .map((entry) => detailsFunction(entry)),
+      .map((entry) => detailsFunction(entry, gedcom)),
   )
     .filter((element) => element !== null)
     .map((element, index) => (
@@ -121,6 +201,34 @@ function getDetails(
     ));
 }
 
+function combineAllMatchingEntriesIntoSingleSection(
+  entries: GedcomEntry[],
+  gedcom: GedcomData,
+  tags: string[],
+  detailsFunction: (
+    entries: GedcomEntry[],
+    gedcom: GedcomData,
+  ) => React.ReactNode | null,
+): React.ReactNode {
+  const entriesWithMatchingTag = flatMap(tags, (tag) =>
+    entries.filter((entry) => entry.tag === tag),
+  ).filter((element) => element !== null);
+
+  const sectionWithDetails = entriesWithMatchingTag.length
+    ? detailsFunction(entriesWithMatchingTag, gedcom)
+    : null;
+
+  if (!sectionWithDetails) {
+    return null;
+  }
+
+  return (
+    <Item>
+      <Item.Content>{sectionWithDetails}</Item.Content>
+    </Item>
+  );
+}
+
 /**
  * Returns true if there is displayable information in this entry.
  * Returns false if there is no data in this entry or this is only a reference
@@ -130,9 +238,10 @@ function hasData(entry: GedcomEntry) {
   return entry.tree.length > 0 || (entry.data && !entry.data.startsWith('@'));
 }
 
-function getOtherDetails(entries: GedcomEntry[]) {
+function getOtherSections(entries: GedcomEntry[], gedcom: GedcomData) {
   return entries
     .filter((entry) => !EXCLUDED_TAGS.includes(entry.tag))
+    .map((entry) => dereference(entry, gedcom, (gedcom) => gedcom.other))
     .filter(hasData)
     .map((entry) => dataDetails(entry))
     .filter((element) => element !== null)
@@ -150,18 +259,42 @@ interface Props {
 
 export function Details(props: Props) {
   const entries = props.gedcom.indis[props.indi].tree;
-  const entriesWithData = entries
-    .map((entry) => dereference(entry, props.gedcom, (gedcom) => gedcom.other))
-    .filter(hasData);
 
   return (
     <div className="details">
       <Item.Group divided>
-        {getDetails(entries, ['NAME'], nameDetails)}
+        {getSectionForEachMatchingEntry(
-        {getDetails(entriesWithData, ['OBJE'], fileDetails)}
+          entries,
+          props.gedcom,
+          ['NAME'],
+          nameDetails,
+        )}
+        {getSectionForEachMatchingEntry(
+          entries,
+          props.gedcom,
+          ['OBJE'],
+          imageDetails,
+        )}
         <Events gedcom={props.gedcom} entries={entries} indi={props.indi} />
-        {getOtherDetails(entriesWithData)}
+        {getOtherSections(entries, props.gedcom)}
-        {getDetails(entriesWithData, ['NOTE'], noteDetails)}
+        {getSectionForEachMatchingEntry(
+          entries,
+          props.gedcom,
+          ['NOTE'],
+          noteDetails,
+        )}
+        {combineAllMatchingEntriesIntoSingleSection(
+          entries,
+          props.gedcom,
+          ['OBJE'],
+          fileDetails,
+        )}
+        {combineAllMatchingEntriesIntoSingleSection(
+          entries,
+          props.gedcom,
+          ['SOUR'],
+          sourceDetails,
+        )}
       </Item.Group>
     </div>
   );

src/details/event-extras.tsx

@@ -1,7 +1,5 @@
-import * as React from 'react';
 import {useState} from 'react';
-import {FormattedMessage, IntlShape, useIntl} from 'react-intl';
+import {FormattedMessage} from 'react-intl';
-import Linkify from 'react-linkify';
 import {
   Icon,
   Item,
@@ -11,9 +9,10 @@ import {
   Popup,
   Tab,
 } from 'semantic-ui-react';
-import {DateOrRange} from 'topola';
+import {Source} from '../util/gedcom_util';
-import {formatDateOrRange} from '../util/date_util';
+import {AdditionalFiles, FileEntry} from './additional-files';
 import {MultilineText} from './multiline-text';
+import {Sources} from './sources';
 import {WrappedImage} from './wrapped-image';
 
 export interface Image {
@@ -22,19 +21,12 @@ export interface Image {
   title?: string;
 }
 
-export interface Source {
-  title?: string;
-  author?: string;
-  page?: string;
-  date?: DateOrRange;
-  publicationInfo?: string;
-}
-
 interface Props {
   images?: Image[];
   notes?: string[][];
   sources?: Source[];
   indi: string;
+  files?: FileEntry[];
 }
 
 function eventImages(images: Image[] | undefined) {
@@ -69,37 +61,7 @@ function eventNotes(notes: string[][] | undefined) {
   );
 }
 
-function eventSources(sources: Source[] | undefined, intl: IntlShape) {
-  return (
-    !!sources?.length && (
-      <List>
-        {sources.map((source, index) => (
-          <List.Item key={index}>
-            <List.Icon verticalAlign="middle" name="circle" size="tiny" />
-            <List.Content>
-              <List.Header>
-                <Linkify properties={{target: '_blank'}}>
-                  {[source.author, source.title, source.publicationInfo]
-                    .filter((sourceElement) => sourceElement)
-                    .join(', ')}
-                </Linkify>
-              </List.Header>
-              <List.Description>
-                <Linkify properties={{target: '_blank'}}>{source.page}</Linkify>
-                {source.date
-                  ? ' [' + formatDateOrRange(source.date, intl) + ']'
-                  : null}
-              </List.Description>
-            </List.Content>
-          </List.Item>
-        ))}
-      </List>
-    )
-  );
-}
-
 export function EventExtras(props: Props) {
-  const intl = useIntl();
   const [activeIndex, setActiveIndex] = useState(-1);
   const [indi, setIndi] = useState('');
 
@@ -109,7 +71,7 @@ export function EventExtras(props: Props) {
   }
 
   function handleTabOnClick(
-    event: React.MouseEvent<HTMLAnchorElement>,
+    _event: React.MouseEvent<HTMLAnchorElement>,
     menuItemProps: MenuItemProps,
   ) {
     menuItemProps.index !== undefined && activeIndex !== menuItemProps.index
@@ -162,10 +124,37 @@ export function EventExtras(props: Props) {
         />
       </Menu.Item>
     ),
-    render: () => <Tab.Pane>{eventSources(props.sources, intl)}</Tab.Pane>,
+    render: () => (
+      <Tab.Pane>
+        <Sources sources={props.sources} />
+      </Tab.Pane>
+    ),
   };
 
-  const panes = [imageTab, noteTab, sourceTab].flatMap((tab) =>
+  const filesTab = props.files?.length && {
+    menuItem: (
+      <Menu.Item fitted key="files" onClick={handleTabOnClick}>
+        <Popup
+          content={
+            <FormattedMessage
+              id="extras.files"
+              defaultMessage="Additonal files"
+            />
+          }
+          size="mini"
+          position="bottom center"
+          trigger={<Icon circular name="file alternate outline" />}
+        />
+      </Menu.Item>
+    ),
+    render: () => (
+      <Tab.Pane>
+        <AdditionalFiles files={props.files} />
+      </Tab.Pane>
+    ),
+  };
+
+  const panes = [imageTab, noteTab, sourceTab, filesTab].flatMap((tab) =>
     tab ? [tab] : [],
   );
 

src/details/events.tsx

@@ -14,9 +14,14 @@ import {
   getFileName,
   getImageFileEntry,
   getName,
+  getNonImageFileEntry,
+  mapToSource,
   pointerToId,
+  resolveDate,
+  Source,
 } from '../util/gedcom_util';
-import {EventExtras, Image, Source} from './event-extras';
+import {FileEntry} from './additional-files';
+import {EventExtras, Image} from './event-extras';
 import {TranslatedTag} from './translated-tag';
 
 function PersonLink(props: {person: GedcomEntry}) {
@@ -53,6 +58,7 @@ interface EventData {
   personLink?: GedcomEntry;
   place?: string[];
   images?: Image[];
+  files?: FileEntry[];
   notes?: string[][];
   sources?: Source[];
   indi: string;
@@ -74,7 +80,7 @@ const FAMILY_EVENT_TAGS = ['MARR', 'DIV'];
 function EventHeader(props: {event: EventData}) {
   const intl = useIntl();
   return (
-    <div className="event-header">
+    <div className="item-header">
       <Header as="span" size="small">
         <TranslatedTag tag={props.event.type} />
       </Header>
@@ -144,48 +150,29 @@ function eventImages(entry: GedcomEntry, gedcom: GedcomData): Image[] {
     );
 }
 
+function eventFiles(entry: GedcomEntry, gedcom: GedcomData): Image[] {
+  return entry.tree
+    .filter((subEntry) => 'OBJE' === subEntry.tag)
+    .map((objectEntry) =>
+      dereference(objectEntry, gedcom, (gedcom) => gedcom.other),
+    )
+    .map((objectEntry) => getNonImageFileEntry(objectEntry))
+    .flatMap((fileEntry) =>
+      fileEntry
+        ? [
+            {
+              url: fileEntry?.data || '',
+              filename: getFileName(fileEntry) || '',
+            },
+          ]
+        : [],
+    );
+}
+
 function eventSources(entry: GedcomEntry, gedcom: GedcomData): Source[] {
   return entry.tree
     .filter((subEntry) => 'SOUR' === subEntry.tag)
-    .map((sourceEntryReference) => {
+    .map((sourceEntryReference) => mapToSource(sourceEntryReference, gedcom));
-      const sourceEntry = dereference(
-        sourceEntryReference,
-        gedcom,
-        (gedcom) => gedcom.other,
-      );
-
-      const title = sourceEntry.tree.find(
-        (subEntry) => 'TITL' === subEntry.tag,
-      );
-
-      const abbr = sourceEntry.tree.find((subEntry) => 'ABBR' === subEntry.tag);
-
-      const author = sourceEntry.tree.find(
-        (subEntry) => 'AUTH' === subEntry.tag,
-      );
-
-      const publicationInfo = sourceEntry.tree.find(
-        (subEntry) => 'PUBL' === subEntry.tag,
-      );
-
-      const page = sourceEntryReference.tree.find(
-        (subEntry) => 'PAGE' === subEntry.tag,
-      );
-
-      const sourceData = sourceEntryReference.tree.find(
-        (subEntry) => 'DATA' === subEntry.tag,
-      );
-
-      const date = sourceData ? resolveDate(sourceData) : undefined;
-
-      return {
-        title: title?.data || abbr?.data,
-        author: author?.data,
-        page: page?.data,
-        date: date ? getDate(date.data) : undefined,
-        publicationInfo: publicationInfo?.data,
-      };
-    });
 }
 
 function eventNotes(entry: GedcomEntry, gedcom: GedcomData): string[][] {
@@ -221,6 +208,7 @@ function toIndiEvent(
       age: getAge(entry, indi, gedcom, intl),
       place: eventPlace(entry),
       images: eventImages(entry, gedcom),
+      files: eventFiles(entry, gedcom),
       notes: eventNotes(entry, gedcom),
       sources: eventSources(entry, gedcom),
       indi: indi,
@@ -228,10 +216,6 @@ function toIndiEvent(
   ];
 }
 
-function resolveDate(entry: GedcomEntry) {
-  return entry.tree.find((subEntry) => subEntry.tag === 'DATE');
-}
-
 function toFamilyEvents(
   entry: GedcomEntry,
   gedcom: GedcomData,
@@ -248,6 +232,7 @@ function toFamilyEvents(
       personLink: getSpouse(indi, family, gedcom),
       place: eventPlace(familyMarriageEvent),
       images: eventImages(familyMarriageEvent, gedcom),
+      files: eventFiles(familyMarriageEvent, gedcom),
       notes: eventNotes(familyMarriageEvent, gedcom),
       sources: eventSources(familyMarriageEvent, gedcom),
       indi: indi,
@@ -272,6 +257,7 @@ function Event(props: {event: EventData}) {
           notes={props.event.notes}
           sources={props.event.sources}
           indi={props.event.indi}
+          files={props.event.files}
         />
       </Item.Content>
     </Item>

src/details/sources.tsx

@@ -0,0 +1,38 @@
+import {useIntl} from 'react-intl';
+import Linkify from 'react-linkify';
+import {List} from 'semantic-ui-react';
+import {formatDateOrRange} from '../util/date_util';
+import {Source} from '../util/gedcom_util';
+
+interface Props {
+  sources?: Source[];
+}
+
+export function Sources({sources}: Props) {
+  const intl = useIntl();
+
+  if (!sources?.length) return null;
+
+  return (
+    <List>
+      {sources.map((source, index) => (
+        <List.Item key={index}>
+          <List.Icon verticalAlign="middle" name="circle" size="tiny" />
+          <List.Content>
+            <List.Header>
+              <Linkify properties={{target: '_blank'}}>
+                {[source.author, source.title, source.publicationInfo]
+                  .filter((sourceElement) => !!sourceElement)
+                  .join(', ')}
+              </Linkify>
+            </List.Header>
+            <List.Description>
+              <Linkify properties={{target: '_blank'}}>{source.page}</Linkify>
+              {source.date && ` [${formatDateOrRange(source.date, intl)}]`}
+            </List.Description>
+          </List.Content>
+        </List.Item>
+      ))}
+    </List>
+  );
+}

src/details/translated-tag.tsx

@@ -22,6 +22,8 @@ const TAG_DESCRIPTIONS = new Map([
   ['OCCU', 'Occupation'],
   ['TITL', 'Title'],
   ['WWW', 'WWW'],
+  ['OBJE', 'Additional files'],
+  ['SOUR', 'Sources'],
   ['birth', 'Birth name'],
   ['married', 'Married name'],
   ['maiden', 'Maiden name'],

src/index.css

@@ -153,13 +153,13 @@ div.zoom {
   padding: 0 15px;
 }
 
-.details .event-header {
+.details .item-header {
   justify-content: space-between;
   display: flex;
   word-break: break-word;
 }
 
-.details .event-header .header {
+.details .item-header .header {
   text-transform: uppercase;
   margin: 0;
   min-width: 40%;

src/translations/bg.json

@@ -62,6 +62,8 @@
   "gedcom.RIN": "ID",
   "gedcom.TITL": "Обръщение",
   "gedcom.WWW": "Линк",
+  "gedcom.OBJE": "Допълнителни файлове",
+  "gedcom.SOUR": "Източници",
   "gedcom._UPD": "Последно обновление",
   "gedcom.birth": "Рождено име",
   "gedcom.married": "Име след брак",
@@ -106,5 +108,6 @@
   "name.unknown_name": "Неизвестно име",
   "extras.images": "Изображение",
   "extras.notes": "Бележки",
-  "extras.sources": "Източници"
+  "extras.sources": "Източници",
+  "extras.files": "Допълнителни файлове"
 }

src/translations/cs.json

@@ -63,6 +63,8 @@
   "gedcom.RIN": "ID",
   "gedcom.TITL": "Titul",
   "gedcom.WWW": "Stránka WWW",
+  "gedcom.OBJE": "Další soubory",
+  "gedcom.SOUR": "Zdroje",
   "gedcom.RELI": "Vyznání",
   "gedcom._UPD": "Poslední aktualizace",
   "gedcom.birth": "Rodné jméno",
@@ -107,5 +109,6 @@
   "name.unknown_name": "N.N.",
   "extras.images": "Obrázky",
   "extras.notes": "Poznámky",
-  "extras.sources": "Zdroje"
+  "extras.sources": "Zdroje",
+  "extras.files": "Další soubory"
 }

src/translations/de.json

@@ -50,6 +50,8 @@
   "gedcom.RIN": "ID",
   "gedcom.TITL": "Titel",
   "gedcom.WWW": "Website",
+  "gedcom.OBJE": "Zusätzliche Dateien",
+  "gedcom.SOUR": "Quellen",
   "gedcom._UPD": "Zuletzt aktualisiert",
   "gedcom.birth": "Geburtsname",
   "gedcom.married": "Ehenamen",

src/translations/fr.json

@@ -60,6 +60,8 @@
   "gedcom.RIN": "ID",
   "gedcom.TITL": "Titre",
   "gedcom.WWW": "Site Web",
+  "gedcom.OBJE": "Fichiers supplémentaires",
+  "gedcom.SOUR": "Sources",
   "gedcom._UPD": "Dernière mise à jour",
   "gedcom.MARR": "Mariage",
   "gedcom.DIV": "Divorce",

src/translations/it.json

@@ -52,6 +52,8 @@
   "gedcom.RIN": "ID",
   "gedcom.TITL": "Titolo",
   "gedcom.WWW": "Sito web",
+  "gedcom.OBJE": "File aggiuntivi",
+  "gedcom.SOUR": "Fonti",
   "gedcom._UPD": "Ultimo aggiornamento",
   "gedcom.birth": "Nome alla nascita",
   "gedcom.married": "Nome da coniugato/a",

src/translations/pl.json

@@ -55,6 +55,8 @@
   "gedcom.RIN": "ID",
   "gedcom.TITL": "Tytuł",
   "gedcom.WWW": "Strona WWW",
+  "gedcom.OBJE": "Dodatkowe pliki",
+  "gedcom.SOUR": "Źródła",
   "gedcom._UPD": "Ostatnia aktualizacja",
   "gedcom.MARR": "Małżeństwo",
   "gedcom.DIV": "Rozwód",
@@ -94,5 +96,6 @@
   "name.unknown_name": "N.N.",
   "extras.images": "Zdjęcia",
   "extras.notes": "Notatki",
-  "extras.sources": "Źródła"
+  "extras.sources": "Źródła",
+  "extras.files": "Dodatkowe pliki"
 }

src/translations/ru.json

@@ -60,6 +60,8 @@
   "gedcom.RIN": "ID",
   "gedcom.TITL": "Титул",
   "gedcom.WWW": "Веб-сайт WWW",
+  "gedcom.OBJE": "Дополнительные файлы",
+  "gedcom.SOUR": "Источники",
   "gedcom._UPD": "Последнее обновление",
   "gedcom.birth": "Имя при рождении",
   "gedcom.married": "Имя в браке",
@@ -97,5 +99,6 @@
   "name.unknown_name": "Н.И.",
   "extras.images": "Картинки",
   "extras.notes": "Примечание",
-  "extras.sources": "Источники"
+  "extras.sources": "Источники",
+  "extras.files": "Дополнительные файлы"
 }

src/util/gedcom_util.ts

@@ -1,6 +1,8 @@
 import {GedcomEntry, parse as parseGedcom} from 'parse-gedcom';
 import {
+  DateOrRange,
   gedcomEntriesToJson,
+  getDate,
   JsonFam,
   JsonGedcomData,
   JsonImage,
@@ -25,6 +27,14 @@ export interface TopolaData {
   gedcom: GedcomData;
 }
 
+export interface Source {
+  title?: string;
+  author?: string;
+  page?: string;
+  date?: DateOrRange;
+  publicationInfo?: string;
+}
+
 /**
  * Returns the identifier extracted from a pointer string.
  * E.g. '@I123@' -> 'I123'
@@ -296,13 +306,67 @@ export function getFileName(fileEntry: GedcomEntry): string | undefined {
   return fileTitle && fileExtension && fileTitle + '.' + fileExtension;
 }
 
-export function getImageFileEntry(
+function findFileEntry(
   objectEntry: GedcomEntry,
+  predicate: (entry: GedcomEntry) => boolean,
 ): GedcomEntry | undefined {
   return objectEntry.tree.find(
     (entry) =>
-      entry.tag === 'FILE' &&
+      entry.tag === 'FILE' && entry.data.startsWith('http') && predicate(entry),
-      entry.data.startsWith('http') &&
-      isImageFile(entry.data),
   );
 }
+
+export function getNonImageFileEntry(
+  objectEntry: GedcomEntry,
+): GedcomEntry | undefined {
+  return findFileEntry(objectEntry, (entry) => !isImageFile(entry.data));
+}
+
+export function getImageFileEntry(
+  objectEntry: GedcomEntry,
+): GedcomEntry | undefined {
+  return findFileEntry(objectEntry, (entry) => isImageFile(entry.data));
+}
+
+export function resolveDate(entry: GedcomEntry) {
+  return entry.tree.find((subEntry) => subEntry.tag === 'DATE');
+}
+
+export function mapToSource(
+  sourceEntryReference: GedcomEntry,
+  gedcom: GedcomData,
+) {
+  const sourceEntry = dereference(
+    sourceEntryReference,
+    gedcom,
+    (gedcom) => gedcom.other,
+  );
+
+  const title = sourceEntry.tree.find((subEntry) => 'TITL' === subEntry.tag);
+
+  const abbr = sourceEntry.tree.find((subEntry) => 'ABBR' === subEntry.tag);
+
+  const author = sourceEntry.tree.find((subEntry) => 'AUTH' === subEntry.tag);
+
+  const publicationInfo = sourceEntry.tree.find(
+    (subEntry) => 'PUBL' === subEntry.tag,
+  );
+
+  const page = sourceEntryReference.tree.find(
+    (subEntry) => 'PAGE' === subEntry.tag,
+  );
+
+  const sourceData = sourceEntryReference.tree.find(
+    (subEntry) => 'DATA' === subEntry.tag,
+  );
+
+  const date = sourceData ? resolveDate(sourceData) : undefined;
+
+  return {
+    title: title?.data || abbr?.data,
+    author: author?.data,
+    page: page?.data,
+    date: date ? getDate(date.data) : undefined,
+    publicationInfo: publicationInfo?.data,
+  };
+}