#+TITLE: MusicLink Integration - Matrix Pivot and Testing
#+DATE: 2026-01-20
#+KEYWORDS: musiclink, matterbridge, matrix, slack-socket-mode, bot-integration, mautrix-slack
#+COMMITS: 2
#+COMPRESSION_STATUS: uncompressed

* Session Summary
** Date: 2026-01-20
** Focus Area: Integration of MusicLink bot into ops-jrz1 infrastructure

* Accomplishments
- [X] Pivoted from direct Slack connection (Matterbridge RTM) to Matrix-mediated bridging due to Slack App Socket Mode requirement.
- [X] Configured `musiclink-matterbridge` to connect to Matrix as `@musiclink:clarun.xyz` via `[matrix]` protocol.
- [X] Registered `@musiclink:clarun.xyz` and granted Server Admin privileges via Conduwuit console to bypass invite-only restrictions (temporarily/workaround).
- [X] Successfully joined Matterbridge to the bot testing room `!whU7Geg7JPrBL5wHcW:clarun.xyz`.
- [X] Verified bot connectivity: MusicLink binary is connected to Matterbridge WebSocket.
- [X] Enabled outbound posting (`gateway.inout`) for the testing room.
- [X] Verified posting capability by sending messages (text and image events) to the room via Matrix API using the bot's token.

* Key Decisions

** Decision 1: Use Matrix as Universal Bus
- Context: Matterbridge (stable) does not support Slack Socket Mode, which our Slack App requires. `mautrix-slack` (already running) handles Slack <-> Matrix bridging perfectly.
- Rationale: Instead of fighting Matterbridge's Slack limitations, we connect MusicLink to Matrix. The flow becomes: `Slack User` -> `mautrix-slack` -> `Matrix Room` -> `Matterbridge` -> `MusicLink`.
- Impact: Solves the connectivity issue without code changes to MusicLink or custom Matterbridge builds.

** Decision 2: Admin Privileges for Bot Join
- Context: The portal room bridging Slack is invite-only. We lacked an easy way to issue an invite from the bridge bot.
- Rationale: Granted `@musiclink` server admin rights (`user make-admin`) to allow it to join any room, bypassing the need for an explicit invite from the bridge.
- Impact: Bot successfully joined the room. (Note: Admin rights should be revoked later for least-privilege).

* Problems & Solutions
| Problem | Solution | Learning |
|---------+----------+----------|
| `not_allowed_token_type` on Slack connection | Abandoned direct Slack connection in Matterbridge; switched to Matrix | Matterbridge's Slack RTM is incompatible with modern Socket Mode-only apps. |
| Bot couldn't join invite-only portal room | Used `conduwuit` admin console to make bot an admin, then joined via API | Admin privileges can bypass join restrictions on some homeservers/configurations. |
| Posted image links unfurled but didn't load | Attempted to upload to Media Repo, but source URLs were flaky (403/404) | Content hosting matters; direct uploads to Matrix Media Repo are reliable if the source download works. |

* Next Steps
- [X] Verify `MusicLink` logic: Does it correctly process music links sent in the room?
  - Note: Infrastructure works (bot sees message), but bot's external API dependency (idonthavespotify) returned 500.
- [ ] Revoke admin privileges from `@musiclink:clarun.xyz` once it is stably in the required rooms.
- [ ] Resolve git access for `musiclink` flake input (currently using local path).
- [ ] Close related beads tasks.