Get the file download link for shared folder

Hi  , I think this might work for you:

Use this API to get the item for a shared link:

https://developer.box.com/reference/get-shared-items

This should return a folder object with the first X items in the folder.

I'm not getting any items from that folder when call get-shared-items:

{
  "type": "folder",
  "id": {id},
  "sequence_id": "0",
  "etag": "0",
  "name": "folder name",
  "created_at": "2020-05-19T09:09:17-07:00",
  "modified_at": "2020-05-19T15:11:33-07:00",
  "description": "",
  "size": 311087559,
  "path_collection": {
    "total_count": 4,
    "entries": [
      {
        "type": "folder",
        "id": "0",
        "sequence_id": null,
        "etag": null,
        "name": "All Files"
      },
      {
        "type": "folder",
        "id": {id},
        "sequence_id": "2",
        "etag": "2",
        "name": "Clients"
      },
      {
        "type": "folder",
        "id": [id},
        "sequence_id": "0",
        "etag": "0",
        "name": "name"
      },
      {
        "type": "folder",
        "id": {id},
        "sequence_id": "0",
        "etag": "0",
        "name": "name"
      }
    ]
  },
  "created_by": {
    "type": "user",
    "id": {id},
    "name": "name",
    "login": "login"
  },
  "modified_by": {
    "type": "user",
    "id": {id},
    "name": "name",
    "login": "login"
  },
  "trashed_at": null,
  "purged_at": null,
  "content_created_at": "2020-05-19T09:09:17-07:00",
  "content_modified_at": "2020-05-19T15:11:33-07:00",
  "owned_by": {
    "type": "user",
    "id": {id},
    "name": "name",
    "login": "login"
  },
  "shared_link": {
    "url": "https://c2c.box.com/v/name",
    "download_url": null,
    "vanity_url": "https://c2c.box.com/v/name",
    "vanity_name": "name",
    "effective_access": "open",
    "effective_permission": "can_download",
    "is_password_enabled": false,
    "unshared_at": null,
    "download_count": 0,
    "preview_count": 0,
    "access": "open",
    "permissions": {
      "can_preview": true,
      "can_download": true
    }
  },
  "folder_upload_email": null,
  "parent": {
    "type": "folder",
    "id": {},
    "sequence_id": "0",
    "etag": "0",
    "name": "name"
  },
  "item_status": "active"
}

Even if I call get-folders-id I'm not getting any share link for the files: 

"item_collection": {
    "total_count": 6,
    "entries": [
      {
        "type": "file",
        "id": {id},
        "file_version": {
          "type": "file_version",
          "id": {id},
          "sha1": {sha1}
        },
        "sequence_id": "0",
        "etag": "0",
        "sha1": {sha1},
        "name": "File name"
      },

 my bad, I missed a step.

Step 1: convert a shared link to an item (file or folder)

curl -X GET https://api.box.com/2.0/shared_items \
     -H 'Authorization: Bearer '
     -H "BoxApi: shared_link=https://c2c.app.box.com/s/v2vpg8ct70..."

In your case, this will return a folder object with an ID.

{
  "type": "folder",
  "id": "12345",
  "sequence_id": "0",
  ....
}

Step 2: Use the folder ID to list the items in the folder

curl -X GET https://api.box.com/2.0/folders/12345/items \
     -H 'Authorization: Bearer '
     -H "BoxApi: shared_link=https://c2c.app.box.com/s/v2vpg8ct70..."

Note that we use the same BoxApi header here as we did in the previous API.

This will return the same folder object but with a list of items in the item_collection attribute.

Step 3: Keep traversing the tree

You can keep traversing the tree here for every item in the folder. So in your case, if you want to access a file with file ID 23456, you'd use:

curl -X GET https://api.box.com/2.0/files/23456 \
     -H 'Authorization: Bearer '
     -H "BoxApi: shared_link=https://c2c.app.box.com/s/v2vpg8ct70..."

Step 4: Download the file

Finally, to download the file, simply call the endpoint to download the content.

curl -X GET https://api.box.com/2.0/files/23456/content \
     -H 'Authorization: Bearer '
     -H "BoxApi: shared_link=https://c2c.app.box.com/s/v2vpg8ct70..."