#!/usr/bin/env bash
# next/tests/http_actors.sh — Step 8c-actors acceptance test.
#
# Exercises match_prefix/2 + GET /actors/{id} route. The id is
# carried back in the response body so callers can confirm the
# right segment was extracted. 12 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/http_server.erl\")) :name)")

;; match_prefix on a clean match returns the rest
(epoch 10)
(eval "(get (erlang-eval-ast \"http_server:match_prefix(<<97,98>>, <<97,98,99,100>>) =:= {ok, <<99,100>>}\") :name)")

;; Empty prefix matches everything
(epoch 11)
(eval "(get (erlang-eval-ast \"http_server:match_prefix(<<>>, <<97,98,99>>) =:= {ok, <<97,98,99>>}\") :name)")

;; No common bytes -> nomatch
(epoch 12)
(eval "(get (erlang-eval-ast \"http_server:match_prefix(<<97,98>>, <<120,121>>) =:= nomatch\") :name)")

;; Prefix longer than path -> nomatch
(epoch 13)
(eval "(get (erlang-eval-ast \"http_server:match_prefix(<<97,98,99,100>>, <<97,98>>) =:= nomatch\") :name)")

;; Exact match yields empty rest
(epoch 14)
(eval "(get (erlang-eval-ast \"http_server:match_prefix(<<97,98>>, <<97,98>>) =:= {ok, <<>>}\") :name)")

;; actors_prefix is "/actors/" — 8 bytes
(epoch 15)
(eval "(erlang-eval-ast \"byte_size(http_server:actors_prefix())\")")

;; GET /actors/alice -> 200
(epoch 16)
(eval "(get (erlang-eval-ast \"Req = [{method, <<71,69,84>>}, {path, <<47,97,99,116,111,114,115,47,97,108,105,99,101>>}], case http_server:route(Req) of [{status, 200} | _] -> ok; _ -> bad end\") :name)")

;; The id appears in the body
(epoch 17)
(eval "(get (erlang-eval-ast \"Req = [{method, <<71,69,84>>}, {path, <<47,97,99,116,111,114,115,47,97,108,105,99,101>>}], R = http_server:route(Req), case R of [_, _, {body, B}] -> http_server:match_prefix(<<97,99,116,111,114,58,32>>, B) =/= nomatch; _ -> false end\") :name)")

;; GET /actors/ (empty id) -> 404
(epoch 18)
(eval "(get (erlang-eval-ast \"Req = [{method, <<71,69,84>>}, {path, <<47,97,99,116,111,114,115,47>>}], case http_server:route(Req) of [{status, 404} | _] -> ok; _ -> bad end\") :name)")

;; POST /actors/alice -> 404 (only GET)
(epoch 19)
(eval "(get (erlang-eval-ast \"Req = [{method, <<80,79,83,84>>}, {path, <<47,97,99,116,111,114,115,47,97,108,105,99,101>>}], case http_server:route(Req) of [{status, 404} | _] -> ok; _ -> bad end\") :name)")

;; GET /unrelated still 404
(epoch 20)
(eval "(get (erlang-eval-ast \"Req = [{method, <<71,69,84>>}, {path, <<47,102,111,111>>}], case http_server:route(Req) of [{status, 404} | _] -> ok; _ -> bad end\") :name)")

;; Existing routes (GET /, capabilities) still work
(epoch 21)
(eval "(get (erlang-eval-ast \"Req1 = [{method, <<71,69,84>>}, {path, <<47>>}], Req2 = [{method, <<71,69,84>>}, {path, http_server:capabilities_path()}], R1 = case http_server:route(Req1) of [{status, 200} | _] -> ok; _ -> bad end, R2 = case http_server:route(Req2) of [{status, 200} | _] -> ok; _ -> bad end, {R1, R2} =:= {ok, ok}\") :name)")
EPOCHS

OUTPUT=$(timeout 60 "$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  "module load name"                  "http_server"
check 10  "match_prefix clean match"          "true"
check 11  "empty prefix matches all"          "true"
check 12  "no common bytes -> nomatch"        "true"
check 13  "prefix > path -> nomatch"          "true"
check 14  "exact match -> empty rest"         "true"
check 15  "actors_prefix size = 8"            "8"
check 16  "GET /actors/alice -> 200"          "ok"
check 17  "body carries 'actor: ' prefix"     "true"
check 18  "GET /actors/ (empty id) -> 404"    "ok"
check 19  "POST /actors/alice -> 404"         "ok"
check 20  "GET /unrelated still 404"          "ok"
check 21  "existing routes intact"            "true"

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