#!/usr/bin/env bash
# next/tests/pipeline_envelope.sh — Step 6b acceptance test.
#
# Exercises stage_envelope/1 directly and via validate_inbound /
# validate_outbound. The envelope module must be loaded first
# because stage_envelope delegates to envelope:validate_shape/1.
# 10 cases.

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

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 "(get (erlang-load-module (file-read \"next/kernel/envelope.erl\")) :name)")
(epoch 3)
(eval "(get (erlang-load-module (file-read \"next/kernel/pipeline.erl\")) :name)")

;; Stage list now has exactly one stage
(epoch 10)
(eval "(erlang-eval-ast \"length(pipeline:inbound_stages())\")")
(epoch 11)
(eval "(erlang-eval-ast \"length(pipeline:outbound_stages())\")")

;; stage_envelope on a valid envelope returns ok
(epoch 12)
(eval "(get (erlang-eval-ast \"pipeline:stage_envelope([{id,1},{type,create},{actor,a},{published,1},{signature,[{key_id,k},{algorithm,e},{value,v}]}]) =:= ok\") :name)")

;; stage_envelope on a non-list returns {error, not_a_proplist}
(epoch 13)
(eval "(get (erlang-eval-ast \"pipeline:stage_envelope(not_a_list) =:= {error, not_a_proplist}\") :name)")

;; stage_envelope on missing id surfaces the missing-field error
(epoch 14)
(eval "(get (erlang-eval-ast \"case pipeline:stage_envelope([{type,create}]) of {error, {missing_field, id}} -> ok; _ -> bad end\") :name)")

;; validate_inbound runs stage_envelope and returns ok for valid input
(epoch 15)
(eval "(get (erlang-eval-ast \"pipeline:validate_inbound([{id,1},{type,create},{actor,a},{published,1},{signature,[{key_id,k},{algorithm,e},{value,v}]}]) =:= ok\") :name)")

;; validate_inbound short-circuits with the envelope error
(epoch 16)
(eval "(get (erlang-eval-ast \"case pipeline:validate_inbound([{type,create}]) of {error, {missing_field, id}} -> ok; _ -> bad end\") :name)")

;; validate_outbound likewise
(epoch 17)
(eval "(get (erlang-eval-ast \"pipeline:validate_outbound([{id,1},{type,create},{actor,a},{published,1},{signature,[{key_id,k},{algorithm,e},{value,v}]}]) =:= ok\") :name)")
(epoch 18)
(eval "(get (erlang-eval-ast \"case pipeline:validate_outbound([{id,1},{actor,a}]) of {error, _} -> ok; _ -> bad end\") :name)")

;; Signature-subfield missing surfaces nested error tag
(epoch 19)
(eval "(get (erlang-eval-ast \"case pipeline:validate_inbound([{id,1},{type,create},{actor,a},{published,1},{signature,[{key_id,k}]}]) of {error, {bad_signature, _}} -> ok; _ -> bad end\") :name)")
EPOCHS

OUTPUT=$(timeout 120 "$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  2  "envelope module loaded"           "envelope"
check  3  "pipeline module loaded"           "pipeline"
check 10  "inbound_stages length = 1"        "1"
check 11  "outbound_stages length = 1"       "1"
check 12  "stage_envelope ok on valid"       "true"
check 13  "stage_envelope errs on non-list"  "true"
check 14  "stage_envelope missing id error"  "ok"
check 15  "validate_inbound ok on valid"     "true"
check 16  "validate_inbound surfaces error"  "ok"
check 17  "validate_outbound ok on valid"    "true"
check 18  "validate_outbound errs on bad"    "ok"
check 19  "nested bad_signature surfaces"    "ok"

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