-module(caffeine_lang@codegen@relay_workflow).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/caffeine_lang/codegen/relay_workflow.gleam").
-export([generate/0]).

-if(?OTP_RELEASE >= 27).
-define(MODULEDOC(Str), -moduledoc(Str)).
-define(DOC(Str), -doc(Str)).
-else.
-define(MODULEDOC(Str), -compile([])).
-define(DOC(Str), -compile([])).
-endif.

-file("src/caffeine_lang/codegen/relay_workflow.gleam", 23).
?DOC(
    " Codegen for the GitHub Actions workflow that runs the bundled relay.\n"
    "\n"
    " The output is a static YAML file the compiler dumps verbatim at\n"
    " `.github/workflows/caffeine-relay.yml` whenever any expectation uses\n"
    " external-signal indicators. The workflow:\n"
    "\n"
    "   - fires every 5 minutes (cron) and on `workflow_dispatch`\n"
    "   - uses a single-slot concurrency group so a slow run doesn't overlap\n"
    "     itself\n"
    "   - installs Erlang + Gleam via `erlef/setup-beam`\n"
    "   - restores the cursor file from GHA cache, then saves it back on exit\n"
    "     so each run picks up where the last one stopped\n"
    "   - invokes the bundled relay project via `gleam run`\n"
    "   - pulls Langfuse and Datadog credentials from repo secrets\n"
    "\n"
    " Paths assume the layout from `codegen/relay` (Task #5) and the bundled\n"
    " relay project from Task #7: `build/relay/signals.json` for the routing\n"
    " table and `build/relay/relay/` for the Gleam project itself.\n"
    " Returns `None` when no relay is needed (the compiler decides based on\n"
    " whether any IR uses external-signal indicators). The wrapped string is\n"
    " the literal YAML the compiler writes to disk.\n"
).
-spec generate() -> binary().
generate() ->
    <<"name: caffeine-relay

on:
  schedule:
    - cron: \"*/5 * * * *\"
  workflow_dispatch: {}

concurrency:
  group: caffeine-relay
  cancel-in-progress: false

jobs:
  relay:
    runs-on: ubuntu-latest
    timeout-minutes: 10
    steps:
      - uses: actions/checkout@v4

      - uses: erlef/setup-beam@v1
        with:
          otp-version: \"27\"
          gleam-version: \"1.x\"

      - uses: actions/cache/restore@v4
        with:
          path: .caffeine/cursor.json
          key: caffeine-cursor-${{ github.run_id }}
          restore-keys: caffeine-cursor-

      - run: gleam run -- --config ../signals.json --cursor ../../.caffeine/cursor.json
        working-directory: build/relay/relay
        env:
          LANGFUSE_PUBLIC_KEY: ${{ secrets.LANGFUSE_PUBLIC_KEY }}
          LANGFUSE_SECRET_KEY: ${{ secrets.LANGFUSE_SECRET_KEY }}
          # Override for self-hosted / EU cloud; leave the repo var unset
          # to default to https://cloud.langfuse.com.
          LANGFUSE_BASE_URL: ${{ vars.LANGFUSE_BASE_URL }}
          DD_API_KEY: ${{ secrets.DD_API_KEY }}

      - if: always()
        uses: actions/cache/save@v4
        with:
          path: .caffeine/cursor.json
          key: caffeine-cursor-${{ github.run_id }}
"/utf8>>.