#!/usr/bin/env bash
# next/tests/pipeline_triggers.sh — fed-sx triggers Phase 2.
#
# pipeline:apply_triggers/3 is the post-append fan-out: a successfully
# appended activity has its type looked up in the trigger registry, and
# each surviving spec (guard + actor-scope pass, not already fired) is
# dispatched to a durable flow. Confirms lookup -> dispatch, no-match,
# guard rejection, {activity,trigger}-cid dedup, multi-bind, graceful
# handling of an unknown flow and a crashing flow, and the cfg gate.

set -uo pipefail
cd "$(git rev-parse --show-toplevel)"

SX_SERVER="${SX_SERVER:-hosts/ocaml/_build/default/bin/sx_server.exe}"
if [ ! -x "$SX_SERVER" ]; then
  SX_SERVER="/root/rose-ash/hosts/ocaml/_build/default/bin/sx_server.exe"
fi
if [ ! -x "$SX_SERVER" ]; then
  echo "ERROR: sx_server.exe not found." >&2
  exit 1
fi

VERBOSE="${1:-}"
PASS=0; FAIL=0; ERRORS=""
TMPFILE=$(mktemp); trap "rm -f $TMPFILE" EXIT

ACT='[{type, create}, {actor, alice}, {id, <<97,99,105,100>>}, {object, [{type, note}]}]'
AS='[{actor_id, alice}]'
CFG='[{trigger_registry, trigger_registry}]'
DONEF='flow_spec:flow_const(ran)'
BOOMF='flow_spec:flow_node(fun(_) -> error(kaboom) end)'

cat > "$TMPFILE" <<EPOCHS
(epoch 1)
(load "lib/erlang/tokenizer.sx")
(load "lib/erlang/parser.sx")
(load "lib/erlang/parser-core.sx")
(load "lib/erlang/parser-expr.sx")
(load "lib/erlang/parser-module.sx")
(load "lib/erlang/transpile.sx")
(load "lib/erlang/runtime.sx")
(load "lib/erlang/vm/dispatcher.sx")
(epoch 2)
(eval "(er-load-gen-server!)")
(eval "(get (erlang-load-module (file-read \"next/kernel/envelope.erl\")) :name)")
(eval "(get (erlang-load-module (file-read \"next/flow/flow.erl\")) :name)")
(eval "(get (erlang-load-module (file-read \"next/flow/flow_spec.erl\")) :name)")
(eval "(get (erlang-load-module (file-read \"next/flow/flow_store.erl\")) :name)")
(eval "(get (erlang-load-module (file-read \"next/kernel/trigger_registry.erl\")) :name)")
(eval "(get (erlang-load-module (file-read \"next/kernel/flow_dispatch.erl\")) :name)")
(epoch 3)
(eval "(get (erlang-load-module (file-read \"next/kernel/pipeline.erl\")) :name)")

;; ── lookup -> dispatch ─────────────────────────────────────
(epoch 10)
(eval "(get (erlang-eval-ast \"trigger_registry:start_link(), trigger_registry:add(create, trigger_registry:mk_spec(<<116,99>>, ranflow, undefined, any)), flow_store:start_link(), flow_store:register_flow(ranflow, ${DONEF}), pipeline:apply_triggers(${ACT}, ${AS}, ${CFG}) =:= {ok, [{<<97,99,105,100>>, <<116,99>>, {ok, 1}}]}\") :name)")
;; the dispatched flow really ran (instance recorded done)
(epoch 11)
(eval "(get (erlang-eval-ast \"trigger_registry:start_link(), trigger_registry:add(create, trigger_registry:mk_spec(<<116,99>>, ranflow, undefined, any)), flow_store:start_link(), flow_store:register_flow(ranflow, ${DONEF}), pipeline:apply_triggers(${ACT}, ${AS}, ${CFG}), flow_store:status(1) =:= {ok, {done, ran}}\") :name)")

;; ── no matching trigger -> no dispatch ─────────────────────
(epoch 20)
(eval "(get (erlang-eval-ast \"trigger_registry:start_link(), flow_store:start_link(), pipeline:apply_triggers(${ACT}, ${AS}, ${CFG}) =:= {ok, []}\") :name)")

;; ── guard returns false -> no dispatch ─────────────────────
(epoch 30)
(eval "(get (erlang-eval-ast \"trigger_registry:start_link(), trigger_registry:add(create, trigger_registry:mk_spec(<<116,99>>, ranflow, fun(_, _) -> false end, any)), flow_store:start_link(), flow_store:register_flow(ranflow, ${DONEF}), pipeline:apply_triggers(${ACT}, ${AS}, ${CFG}) =:= {ok, []}\") :name)")

;; ── dedup: already-fired {activity,trigger} pair -> skipped ─
(epoch 40)
(eval "(get (erlang-eval-ast \"trigger_registry:start_link(), trigger_registry:add(create, trigger_registry:mk_spec(<<116,99>>, ranflow, undefined, any)), flow_store:start_link(), flow_store:register_flow(ranflow, ${DONEF}), pipeline:apply_triggers(${ACT}, [{actor_id, alice}, {triggers_fired, [{<<97,99,105,100>>, <<116,99>>}]}], ${CFG}) =:= {ok, []}\") :name)")

;; ── multiple triggers for the same type -> each dispatched ─
(epoch 50)
(eval "(get (erlang-eval-ast \"trigger_registry:start_link(), trigger_registry:add(create, trigger_registry:mk_spec(<<116,49>>, ranflow, undefined, any)), trigger_registry:add(create, trigger_registry:mk_spec(<<116,50>>, ranflow, undefined, any)), flow_store:start_link(), flow_store:register_flow(ranflow, ${DONEF}), {ok, Rs} = pipeline:apply_triggers(${ACT}, ${AS}, ${CFG}), length(Rs) =:= 2\") :name)")

;; ── unknown flow name -> {error, _} in results, no crash ───
(epoch 60)
(eval "(get (erlang-eval-ast \"trigger_registry:start_link(), trigger_registry:add(create, trigger_registry:mk_spec(<<116,99>>, ghostflow, undefined, any)), flow_store:start_link(), pipeline:apply_triggers(${ACT}, ${AS}, ${CFG}) =:= {ok, [{<<97,99,105,100>>, <<116,99>>, {error, no_such_flow}}]}\") :name)")

;; ── crashing flow -> isolated as {error, {flow_crashed, _}} ─
(epoch 61)
(eval "(get (erlang-eval-ast \"trigger_registry:start_link(), trigger_registry:add(create, trigger_registry:mk_spec(<<116,99>>, boom, undefined, any)), flow_store:start_link(), flow_store:register_flow(boom, ${BOOMF}), {ok, [{_, _, Outcome}]} = pipeline:apply_triggers(${ACT}, ${AS}, ${CFG}), case Outcome of {error, {flow_crashed, _}} -> true; _ -> false end\") :name)")

;; ── no trigger_registry cfg -> {ok, []} ────────────────────
(epoch 70)
(eval "(get (erlang-eval-ast \"trigger_registry:start_link(), trigger_registry:add(create, trigger_registry:mk_spec(<<116,99>>, ranflow, undefined, any)), flow_store:start_link(), flow_store:register_flow(ranflow, ${DONEF}), pipeline:apply_triggers(${ACT}, ${AS}, []) =:= {ok, []}\") :name)")
EPOCHS

OUTPUT=$(timeout 360 "$SX_SERVER" < "$TMPFILE" 2>/dev/null)

check() {
  local epoch="$1" desc="$2" expected="$3"
  local actual
  actual=$(echo "$OUTPUT" | awk -v e="$epoch" '
    $0 ~ "^\\(ok-len " e " " { getline; print; exit }
    $0 ~ "^\\(ok " e " "     { print; exit }
    $0 ~ "^\\(error " e " "  { print; exit }
  ')
  [ -z "$actual" ] && actual="<no output for epoch $epoch>"
  if echo "$actual" | grep -qF -- "$expected"; then
    PASS=$((PASS+1))
    [ "$VERBOSE" = "-v" ] && echo "  ok $desc"
  else
    FAIL=$((FAIL+1))
    ERRORS+="  FAIL [$desc] (epoch $epoch) expected: $expected | actual: $actual
"
  fi
}

check  3 "pipeline module loaded"            "pipeline"
check 10 "lookup -> dispatch (audit)"        "true"
check 11 "dispatched flow actually ran"      "true"
check 20 "no matching trigger -> no dispatch" "true"
check 30 "guard false -> no dispatch"        "true"
check 40 "dedup already-fired -> skipped"    "true"
check 50 "multi-bind: each dispatched"       "true"
check 60 "unknown flow -> error in results"  "true"
check 61 "crashing flow isolated"            "true"
check 70 "no registry cfg -> no dispatch"    "true"

TOTAL=$((PASS+FAIL))
if [ $FAIL -eq 0 ]; then
  echo "ok $PASS/$TOTAL next/tests/pipeline_triggers.sh passed"
else
  echo "FAIL $PASS/$TOTAL passed, $FAIL failed:"
  echo "$ERRORS"
fi
[ $FAIL -eq 0 ]