name: joule-moq-room room service

# The room service (joule-code/joule-code-rs/crates/joule-moq-room), a workspace of its own
# with its own lock file: its keys file, the grants it signs checked against its
# descriptor and read by the relay's reader, the places and the limiter, and
# tests/room_service.rs, the service against a relay on loopback that trusts its authority:
# a grant and its proof open a session and the clock announces the publisher, the grant
# alone opens none, the room verifies (live-rooms §9), a publisher past the room's places
# is refused, clients are bounded, and a new room starts when the last publisher has left;
# an end-to-end encrypted room (WAI confidentiality), members keying through the
# service's log on a relay; admission by age (WAI age-assurance §5.6), the service a
# Privacy Pass origin whose tokens' thresholds its grants state and the relay serves by; and a
# watch room (WAI co-watch): viewers admitted by a proof of their key, their controls and
# statements carried when co-watch accepts them, the clock's skew statements and leaves, and the
# room the log carries verified by wai-rs; and a remote desktop room (WAI remote-desktop,
# tests/remote_room.rs): the host agent of joule-moq-remote enters by an invitation over https://
# and wss:// through TLS fronts, viewers make their keys, the host hands control over by a grant
# exchange it proves its key for, inputs are applied and refused by the rules, a controller's
# typing sealed to the host and absent from what a viewer receives, refused floor statements
# change nothing, a record out of its chain's order is cut and its author removed, the session's
# records are read under a grant of the room alone, and the session verified by wai-rs as the
# clock and the host hold it, at the commitment and the opened levels; a viewer flooding past its
# own record bound (max_records_per_principal), cut and removed while the session goes on and
# verifies; and a session the clock ends at its record bound on the whole session (max_records),
# whole and verified; a conversation (WAI live-messaging, tests/messaging_room.rs):
# members keying through real MLS groups, messaging across a restart of the service from its
# history store, a thread, reactions, an edit and a retraction, a removed member served nothing
# past its removal, every record verified offline; and a call (tests/call_room.rs) rung, accepted
# and carrying audio and video through the relay, and another missed. tests/openapi_contract.rs
# holds openapi.json to the service: every operationId is the operation's name in the toolchain's
# catalogue (wai/wai-rs/src/catalogue.rs, at the route it gives) and every operation the
# catalogue routes to the room service is described, the routes the routers match are exactly its
# operations, each status it lists is one its handlers return and each status they return is
# listed, and the service, run in each of its modes, answers every operation with a status it
# lists. tests/mcp_dev_room.rs builds `wai` with the feature `mcp` and the relay wai-relay (each a
# target directory of its own) and drives `wai mcp --toolset core,dev` with an MCP client: the tool
# room_grant and POST /grant named alike (room.grant), a stack whose room service is of another
# toolchain refused as stale, WAI's local stack (`wai dev --control`) started on loopback, grants
# for test principals, two joining and publishing with their receipts and one without, whose
# objects the relay drops, the session verified as live-rooms §9 verifies a room, a changed record
# refused, a synthetic publisher and viewer's test, and a grant from a service off the machine
# refused. tests/cli_dev_room.rs runs the same stack with `wai dev --control` in a project and
# drives it from the command line: wai room join (a grant, then the join through the stack's
# origin), wai session show verified as live-rooms §9 verifies a room, before and after wai room
# leave, wai room show --target local, wai log tail, wai session list (the summary of the session
# the relay closed) and wai room invite (an invitation the room's authority signed), and once the
# stack stops a door finds none. tests/participants.rs holds the synthetic participants (`wai-room participant`) to a
# relay with doors: a participant without receipts dropped there and served where there is none,
# impairment on the QUIC binding changing the loss QUIC measures, and a load delivered in full.
# tests/source_room.rs: the room's own source ([source]) through the relay, every object held
# to its playout timing, and through the HTTP egress gateway, each part served on its running
# receipt; and its real-time test, refused on a loaded runner.
# tests/ports.rs holds the local stack's ports in one place: room.example.toml's relay_url is
# relay.example.toml's WebSocket endpoint and path, gateway.example.toml, read by the gateway's
# own reader (joule-moq-ingest, a dev-dependency), has the relay's QUIC endpoint and each listener
# it names a row (off until set when commented out, and read at the row's port once set), the relay's
# example is `wai-relay --dev`, wai dev's origin is the one the remote desktop template's host
# reaches, and the defaults of wai-audit, wai-ledger, wai-fleet, wai-quantum-service, the worlds'
# relay, the stitched presentation verifier and `wai http origin` are their sources', every one
# of them a row of wai/quickstart/README.md's port table and no port twice; the room service
# started from its example opens its clock's session on the relay started from its; and the
# gateway started from its example (ports moved to free ones, its files made) opens HTTP and
# RTMP and none of the listeners its example leaves off.
#
# It builds on wai-rs's room, event, composition, co-watch and remote desktop records, on the
# relay, on joule-moq-mls, on the remote desktop host agent and on wai-metrics, so a change to any
# of them runs it. Push filters match the push's delta, so every path the job reads is listed.
# After the tests, clippy holds the service's own code, every target, to no warnings.

concurrency:
  group: ${{ github.workflow }}-${{ github.event_name == 'push' && github.sha || github.ref }}
  cancel-in-progress: true

on:
  # A push to main runs it too: work lands as direct commits to main, and this workflow has
  # no schedule, so without this a direct commit would build and test none of it.
  push:
    branches: [main]
    paths:
      - 'joule-code/joule-code-rs/crates/joule-moq-room/**'
      - 'joule-code/joule-code-rs/crates/joule-moq-remote/**'
      - 'joule-code/joule-code-rs/crates/joule-moq/**'
      - 'joule-code/joule-code-rs/crates/joule-moq-mls/**'
      - 'joule-code/joule-code-rs/crates/joule-moq-relay/**'
      - 'joule-code/joule-code-rs/crates/jwp/**'
      - 'joule-code/joule-code-rs/vendor/**'
      - 'wai/wai-rs/**'
      - 'wai/wai-ops/**'
      - 'wai/wai-metrics/**'
      # tests/tempo_vectors.rs regenerates and checks the playout timing corpus and requires
      # co-watch §15.6's table; the step after the tests reads it with its second implementation.
      - 'wai/moqt-conformance/tempo/**'
      - 'wai/moqt-conformance/tempo_verify.py'
      - 'wai/extensions/co-watch.md'
      # Read and started by tests/ports.rs: the ingest gateway and what it builds on.
      - 'joule-code/joule-code-rs/crates/joule-moq-ingest/**'
      - 'joule-code/joule-code-rs/crates/joule-contrib/**'
      # tests/source_room.rs: the HTTP egress gateway serves the room source's parts, and the
      # source publishes the package it names.
      - 'joule-code/joule-code-rs/crates/joule-moq-http/**'
      - 'wai/pack-conformance/multi/multi-opus-01/**'
      # Read by tests/ports.rs.
      - 'wai/quickstart/README.md'
      - 'wai/examples/remote-desktop/host.sh'
      - 'wai/wai-audit/src/main.rs'
      - 'wai/wai-ledger/src/main.rs'
      - 'wai/wai-fleet/src/main.rs'
      - 'wai/wai-quantum-service/src/main.rs'
      - 'wai/wai-relay/src/main.rs'
      - '.github/workflows/joule-moq-room.yml'
  pull_request:
    paths:
      - 'joule-code/joule-code-rs/crates/joule-moq-room/**'
      - 'joule-code/joule-code-rs/crates/joule-moq-remote/**'
      - 'joule-code/joule-code-rs/crates/joule-moq/**'
      - 'joule-code/joule-code-rs/crates/joule-moq-mls/**'
      - 'joule-code/joule-code-rs/crates/joule-moq-relay/**'
      - 'joule-code/joule-code-rs/crates/jwp/**'
      - 'joule-code/joule-code-rs/vendor/**'
      - 'wai/wai-rs/**'
      - 'wai/wai-ops/**'
      - 'wai/wai-metrics/**'
      # tests/tempo_vectors.rs regenerates and checks the playout timing corpus and requires
      # co-watch §15.6's table; the step after the tests reads it with its second implementation.
      - 'wai/moqt-conformance/tempo/**'
      - 'wai/moqt-conformance/tempo_verify.py'
      - 'wai/extensions/co-watch.md'
      # Read and started by tests/ports.rs: the ingest gateway and what it builds on.
      - 'joule-code/joule-code-rs/crates/joule-moq-ingest/**'
      - 'joule-code/joule-code-rs/crates/joule-contrib/**'
      # tests/source_room.rs: the HTTP egress gateway serves the room source's parts, and the
      # source publishes the package it names.
      - 'joule-code/joule-code-rs/crates/joule-moq-http/**'
      - 'wai/pack-conformance/multi/multi-opus-01/**'
      # Read by tests/ports.rs.
      - 'wai/quickstart/README.md'
      - 'wai/examples/remote-desktop/host.sh'
      - 'wai/wai-audit/src/main.rs'
      - 'wai/wai-ledger/src/main.rs'
      - 'wai/wai-fleet/src/main.rs'
      - 'wai/wai-quantum-service/src/main.rs'
      - 'wai/wai-relay/src/main.rs'
      - '.github/workflows/joule-moq-room.yml'

jobs:
  # Forgejo matches `paths:` against the push delta, so a rebase fires this workflow
  # whatever the pull request changes. This job reads the pull request's own diff against
  # the paths above (scripts/pr-touches-paths.py, which fails open).
  relevant:
    name: joule-moq-room · does this change touch it
    runs-on: gate
    outputs:
      run: ${{ steps.gate.outputs.run }}
    steps:
      - uses: actions/checkout@v5
        with:
          fetch-depth: 0
      - id: gate
        run: |
          set -euo pipefail
          r=$(python3 scripts/pr-touches-paths.py .github/workflows/joule-moq-room.yml \
                "${{ github.event.pull_request.base.sha }}" \
                "${{ github.event.pull_request.head.sha }}")
          echo "this change touches the room service: $r"
          echo "run=$r" >> "$GITHUB_OUTPUT"

  test:
    name: joule-moq-room, every target
    needs: relevant
    if: needs.relevant.outputs.run == 'true'
    runs-on: linux-arm64
    timeout-minutes: 45
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Install Rust 1.99.1
        shell: bash
        run: |
          export PATH="$HOME/.cargo/bin:$PATH"
          command -v rustup >/dev/null 2>&1 || \
            curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --profile minimal --default-toolchain 1.99.1
          rustup toolchain install 1.99.1 --profile minimal --component clippy
          rustup default 1.99.1
          echo "$HOME/.cargo/bin" >> "$GITHUB_PATH"

      - name: joule-moq-room, every target
        working-directory: joule-code/joule-code-rs/crates/joule-moq-room
        shell: bash
        run: cargo test --locked --all-targets

      # Playout timing (draft-nandakumar-moq-tempo-00; WAI co-watch §15): the corpus read by
      # a second implementation written from the text, which computes the controlled position
      # itself (tests/tempo_vectors.rs holds the crate to the corpus in the step above).
      - name: playout timing, second implementation
        shell: bash
        run: |
          if ! command -v python3 >/dev/null 2>&1; then
            SUDO=""; [ "$(id -u)" = 0 ] || SUDO="sudo"
            $SUDO apt-get update -qq
            $SUDO apt-get install -y -qq python3
          fi
          python3 -I wai/moqt-conformance/tempo_verify.py

      # Its own code only (`--no-deps`), every target, warnings as errors: a lint in a crate it
      # builds on through a path dependency is that crate's to fix.
      - name: joule-moq-room, clippy
        working-directory: joule-code/joule-code-rs/crates/joule-moq-room
        shell: bash
        run: cargo clippy --locked --all-targets --no-deps -- -D warnings