Import from trello: comments, images, attachments

import/README.md

@@ -8,4 +8,99 @@ This subfolder contains scripts to import data from other systems. It is at an e
 * Todoist
 * Nextcloud Deck
 
+## Trello
+
+The base structure for importing archive is the same for every method:
+
+```
+- board.boardarchive:       a normal zip archive with changed extension
+-- version.json             version metadata
+-- {boardId}:               folder with name equal to boardId
+--- board.jsonl             jsonl board metadata generated for board with importTrello.ts
+--- {attachments}           attachments from trello in format {trello_attachment_id}.{extensions}
+```
+
+To create board.jsonl use *.json board data file from trello and command:
+```
+node -r ts-node/register importTrello.ts -i {trello_board_data}.json -o board.jsonl
+```
+
+Add attachments to the {boardId} folder, the fastest way is to download them thourgh the same {trello_board_data}.json (you can get origin json from trello export option) with your API keys, the name pattern is `${trello_attachment_id}.${fileExtension}`:
+<details>
+  <summary>NodeJS example</summary>
+
+    ```javascript
+        const fs = require('fs');
+        const fetch = require('node-fetch');
+        const path = require('path');
+
+        const API_KEY = 'XXXXXX';
+        const TOKEN = 'XXXXXX';
+        const baseURL = 'https://api.trello.com/1';
+
+        async function downloadFile(metaUrl, dest, card) {
+            const headers = {
+                'Authorization': `OAuth oauth_consumer_key="${API_KEY}", oauth_token="${TOKEN}"`
+            }
+
+            let response = await fetch(metaUrl, { headers });
+            if (!response.ok) {
+                throw new Error(`Failed to fetch metadata from ${metaUrl}. Status: ${response.statusText}`);
+            }
+
+            const metadata = await response.json();
+
+            // Now, fetch the actual file using the provided download format
+            const fileUrl = `https://api.trello.com/1/cards/${card.id}/attachments/${metadata.id}/download/${metadata.fileName}`;
+            response = await fetch(fileUrl, { headers });
+
+            if (!response.ok) {
+                throw new Error(`Failed to fetch file from ${fileUrl}. Status: ${response.statusText}`);
+            }
+
+            const buffer = await response.buffer();
+            await fs.promises.writeFile(dest, buffer);
+        }
+
+        async function main() {
+            try {
+                const data = JSON.parse(fs.readFileSync('data.json', 'utf8'));
+
+                if (!data.cards || data.cards.length === 0) {
+                    console.log("No cards found.");
+                    return;
+                }
+
+                console.log('Cards: ' + data.cards.length)
+
+                for (const card of data.cards) {
+                    if (!card.attachments || card.attachments.length === 0) {
+                        console.log(`Card ${card.id} has no attachments.`);
+                        continue;
+                    }
+
+                    for (const attachment of card.attachments) {
+                        const fileExtension = path.extname(attachment.fileName || '');
+                        const fileName = `${attachment.id}${fileExtension}`;
+
+                        // Build the Trello API URL
+                        const downloadUrl = `${baseURL}/cards/${card.id}/attachments/${attachment.id}?key=${API_KEY}&token=${TOKEN}`;
+                        try {
+                            await downloadFile(downloadUrl, `./downloads/${fileName}`, card);
+                            console.log(`File saved as ./downloads/${fileName}`);
+                        } catch (err){
+                            //Sometimes attachs cannot be downloaded
+                            console.log(err)
+                        }
+                    }
+                }
+            } catch (error) {
+                console.error(`Error: ${error.message}`);
+            }
+        }
+
+        main()
+    ```
+</details>
+
 [Contribute code](https://mattermost.github.io/focalboard/) to expand this.

import/trello/importTrello.ts

@@ -6,6 +6,9 @@ import {exit} from 'process'
 import {ArchiveUtils} from '../util/archive'
 import {Block} from '../../webapp/src/blocks/block'
 import {Board} from '../../webapp/src/blocks/board'
+import {createAttachmentBlock} from '../../webapp/src/blocks/attachmentBlock'
+import {createImageBlock} from '../../webapp/src/blocks/imageBlock'
+import {createCommentBlock} from '../../webapp/src/blocks/commentBlock'
 import {IPropertyOption, IPropertyTemplate, createBoard} from '../../webapp/src/blocks/board'
 import {createBoardView} from '../../webapp/src/blocks/boardView'
 import {createCard} from '../../webapp/src/blocks/card'
@@ -112,6 +115,8 @@ function convert(input: Trello): [Board[], Block[]] {
         outCard.title = card.name
         outCard.boardId = board.id
         outCard.parentId = board.id
+        const updateDate = new Date(card.dateLastActivity)
+        outCard.updateAt = updateDate.getTime()
 
         // Map lists to Select property options
         if (card.idList) {
@@ -127,6 +132,11 @@ function convert(input: Trello): [Board[], Block[]] {
 
         blocks.push(outCard)
 
+        if (!outCard.fields.contentOrder) {
+            outCard.fields.contentOrder = []
+        }
+
+        //Description
         if (card.desc) {
             // console.log(`\t${card.desc}`)
             const text = createTextBlock()
@@ -134,16 +144,60 @@ function convert(input: Trello): [Board[], Block[]] {
             text.boardId = board.id
             text.parentId = outCard.id
             blocks.push(text)
-
-            outCard.fields.contentOrder = [text.id]
+            outCard.fields.contentOrder.push(text.id)
         }
 
+        // Attachments
+        if (card.attachments){
+            card.attachments.forEach(attach => {
+                const attachment = createAttachmentBlock()
+                const extension = getFileExtension(attach.name)
+                const name = `${attach.id}.${extension}`
+                attachment.fields.fileId = name
+                attachment.boardId = board.id
+                attachment.parentId = outCard.id
+                attachment.title = name
+
+                const date = new Date(attach.date)
+                attachment.createAt = date.getTime()
+                blocks.push(attachment)
+
+                if (isImageFile(name)){
+                    const image = createImageBlock()
+                    image.boardId = board.id
+                    image.parentId = outCard.id
+                    image.fields.fileId = name
+                    blocks.push(image)
+                    outCard.fields.contentOrder.push(image.id)
+                }
+            })
+        }
+
+        //Iteratin actions to find comments and card createdBy
+        input.actions.forEach(action => {
+            if (action.data.card && action.data.card.id === card.id) {
+                if (action.type === 'createCard') {
+                    const date = new Date(action.date)
+                    outCard.createAt = date.getTime()
+                } else if (action.type === 'commentCard') {
+                    const comment = createCommentBlock()
+                    comment.boardId = board.id
+                    comment.parentId = outCard.id
+                    const date = new Date(action.date)
+                    comment.createAt = date.getTime()
+                    comment.title = action.data.text!
+                    blocks.push(comment)
+                    outCard.fields.contentOrder.push(comment.id)
+                }
+            }
+        })
+
         // Add Checklists
         if (card.idChecklists && card.idChecklists.length > 0) {
             card.idChecklists.forEach(checklistID => {
-                const lookup = input.checklists.find(e => e.id === checklistID)
+                const lookup = card.checklists.find(e => e.id === checklistID)
                 if (lookup) {
-                    lookup.checkItems.forEach(trelloCheckBox=> {
+                    lookup.checkItems.forEach((trelloCheckBox) => {
                         const checkBlock = createCheckboxBlock()
                         checkBlock.title = trelloCheckBox.name
                         if (trelloCheckBox.state === 'complete') {
@@ -162,12 +216,26 @@ function convert(input: Trello): [Board[], Block[]] {
         }
     })
 
-    console.log('')
-    console.log(`Found ${input.cards.length} card(s).`)
+    console.log(`\nFound ${input.cards.length} card(s).`)
 
     return [boards, blocks]
 }
 
+function isImageFile(filename: string): boolean {
+    const imageExtensions = ['png', 'jpg', 'jpeg', 'gif', 'bmp', 'webp', 'tiff', 'svg']
+    const extension = filename.split('.').pop()?.toLowerCase()
+    return imageExtensions.includes(extension!)
+}
+
+function getFileExtension(filename: string): string | null {
+    const parts = filename.split('.')
+    if (parts.length > 1) {
+        return parts[parts.length - 1]
+    }
+
+    return null
+}
+
 function showHelp() {
     console.log('import -i <input.json> -o [output.boardarchive]')
     exit(1)

import/trello/trello.ts

@@ -70,6 +70,7 @@ export interface Icon {
 }
 
 export interface Data {
+    attachment: any;
     old?:             Old;
     customField?:     DataCustomField;
     customFieldItem?: CustomFieldItem;
@@ -306,6 +307,7 @@ export interface CardElement {
     due:                   null | string;
     email:                 string;
     idChecklists:          string[];
+    checklists:            ChecklistElement[];
     idMembers:             IDMemberCreator[];
     labels:                Label[];
     limits:                CardLimits;

import/util/archive.ts

@@ -25,7 +25,10 @@ interface BoardArchiveLine extends ArchiveLine {
 }
 
 class ArchiveUtils {
-    static buildBlockArchive(boards: readonly Board[], blocks: readonly Block[]): string {
+    static buildBlockArchive(
+        boards: readonly Board[],
+        blocks: readonly Block[]
+    ): string {
         const header: ArchiveHeader = {
             version: 1,
             date: Date.now(),
@@ -95,4 +98,5 @@ class ArchiveUtils {
     }
 }
 
-export {ArchiveHeader, ArchiveLine, BlockArchiveLine, ArchiveUtils}
+export {ArchiveHeader, ArchiveLine, BlockArchiveLine, ArchiveUtils}
+