[Feature] Manual album arrangement with sections

[mordae]

I have searched the existing feature requests to make sure this is not a duplicate request.

• Yes

The feature

It would be nice if Immich allowed for album content to be arranged in a way that facilitates better presentation to other people. Specifically, it would be nice if it was possible to:

1. Reorder photos regardless of their timestamp
   • Selected with 3rd choice in the Album Options
   • Drag & drop to vertical bars between and around the photos to reorder
2. Manually place delimiters to separate sections of album
   • Optionally add text to act as a section heading (otherwise it's just a hard row break)
3. Deterministic addition to album
   • If the last section in album has no label or there are no sections, photos get appended
   • If the last section in album has a label, new section without a label is appended and then the photo is appended

For example (a vacation in Greece):

-- Arrival ---------------------------------------------------
+------------+  +----------------------------+  +------------+
| 123        |  | 124                        |  | 125        |
|            |  |                            |  |            |
|            |  |                            |  |            |
|            |  |                            |  |            |
|            |  |                            |  |            |
|            |  |                            |  |            |
|            |  |                            |  |            |
|            |  |                            |  |            |
+------------+  +----------------------------+  +------------+

-- Biking Trip -----------------------------------------------
+------------+  +------------+  +------------+  +------------+
| 433        |  | 126        |  | 127        |  | 131        |
|            |  |            |  |            |  |            |
|            |  |            |  |            |  |            |
|            |  |            |  |            |  |            |
|            |  |            |  |            |  |            |
|            |  |            |  |            |  |            |
|            |  |            |  |            |  |            |
|            |  |            |  |            |  |            |
+------------+  +------------+  +------------+  +------------+
+------------+  +----------------------------+
| 130        |  | 129                        |
|            |  |                            |
|            |  |                            |
|            |  |                            |
|            |  |                            |
|            |  |                            |
|            |  |                            |
|            |  |                            |
+------------+  +----------------------------+


+------------+       <- added later, not yet sorted
| 142        |
|            |
|            |
|            |
|            |
|            |
|            |
|            |
+------------+

The simplest data structure required to hold both ordering and delimiters would be (string | number)[], that is:

["Arrival", 123, 124, 125, "Biking Trip", 433, 126, 127, 131, 130, 129, "", 142]

Possible solutions in DB terms:

1. Manual ordering field would have to be added to the M:N join table between photos and albums and new table with labels would have to be created.
2. Ordering would be saved in a JSON field similar to the example above and any photos related to the album that are not found inside the ordering field would go to a new section at the end of the album when presenting.

Somewhat related to #1689.

Platform

• Server
• Web
• Mobile

[bo0tzz]

#3896