#!/usr/bin/env bats

load 'helpers'

setup() {
  setup_party_sandbox
  load_party_lib
}

@test "roster_record_path composes deterministically" {
  out=$(roster_record_path "veg" "debug-the-deploy")
  [ "$out" = "$PARTY_SOCKET_DIR/party-veg:debug-the-deploy.d/roster" ]
}

@test "party_dir_path composes deterministically" {
  out=$(party_dir_path "veg" "debug-the-deploy")
  [ "$out" = "$PARTY_SOCKET_DIR/party-veg:debug-the-deploy.d" ]
}

@test "socket_path lives inside the per-party private dir" {
  out=$(socket_path "veg" "debug-the-deploy")
  [ "$out" = "$PARTY_SOCKET_DIR/party-veg:debug-the-deploy.d/sock" ]
}

@test "roster_write then roster_read round-trips all fields" {
  ensure_party_dir "$USER" "rt-test"
  rec=$(roster_record_path "$USER" "rt-test")
  # roster_read derives RR_HOST_USER, RR_PARTY_NAME, and RR_SOCKET from
  # the dir basename and filesystem; SERVER_PID, GROUP, and CREATED come
  # from the file. The values written here for HOST_USER/PARTY_NAME/
  # SOCKET are advisory and overlap with what roster_read derives.
  derived_sock="$PARTY_SOCKET_DIR/party-$USER:rt-test.d/sock"
  roster_write "$rec" \
    HOST_USER "$USER" \
    PARTY_NAME "rt-test" \
    SOCKET     "$derived_sock" \
    SERVER_PID 12345 \
    CREATED    "2026-04-26T18:42:00Z"
  [ -f "$rec" ]
  roster_read "$rec"
  [ "$RR_HOST_USER"  = "$USER" ]
  [ "$RR_PARTY_NAME" = "rt-test" ]
  [ "$RR_SOCKET"     = "$derived_sock" ]
  [ "$RR_SERVER_PID" = "12345" ]
  [ "$RR_CREATED"    = "2026-04-26T18:42:00Z" ]
}

@test "roster_write is atomic: no partial files on failure" {
  ensure_party_dir "$USER" "atomic"
  rec=$(roster_record_path "$USER" "atomic")
  roster_write "$rec" HOST_USER "$USER" PARTY_NAME "atomic" \
    SOCKET "/tmp/sock" SERVER_PID 1 CREATED 0
  # The write goes via a temp file; no .tmp leftover should remain in
  # the per-party dir.
  ! ls "${rec%/*}"/*.tmp 2>/dev/null
}

@test "roster_read fails on missing file" {
  run roster_read "$PARTY_SOCKET_DIR/party-nobody:nope.d/roster"
  [ "$status" -ne 0 ]
}

# Helper: write a $PARTY_TMUX stub that exits with the given code on
# every invocation. Used to test is_party_alive's tmux probe in isolation.
_stub_tmux() {
  cat > "$PARTY_TMP/tmux-stub" <<EOF
#!/bin/sh
exit $1
EOF
  chmod +x "$PARTY_TMP/tmux-stub"
  PARTY_TMUX="$PARTY_TMP/tmux-stub"
}

@test "is_party_alive: tmux probe ok → true (regardless of PID liveness)" {
  # Liveness is decided by the tmux probe alone; the PID arg is kept for
  # caller-API compatibility and numeric-validation, but is not signal-
  # probed (POSIX kill(2) returns EPERM cross-user on illumos/BSD/macOS,
  # which broke cross-user discovery in earlier revisions). With a stub
  # tmux returning 0, both a live and a never-existed PID must pass.
  _stub_tmux 0
  ( sleep 30 ) &
  pid=$!
  is_party_alive "$pid" /dev/null
  kill "$pid" 2>/dev/null
  wait "$pid" 2>/dev/null || true
  # Same PID, now reaped — tmux stub still says yes, so still alive.
  is_party_alive "$pid" /dev/null
  # And a PID we never owned (init/launchd, root) — likewise alive.
  is_party_alive 1 /dev/null
}

@test "is_party_alive: empty/non-numeric PID → false" {
  _stub_tmux 0
  ! is_party_alive "" /dev/null
  ! is_party_alive "abc" /dev/null
}

@test "is_party_alive: tmux probe fails → false" {
  # PID-reuse / planted nc -lU socket scenario: the socket isn't a real
  # tmux server, so the tmux handshake fails. is_party_alive rejects
  # regardless of PID state (regression seen cross-user on illumos
  # native).
  _stub_tmux 1
  ( sleep 30 ) &
  pid=$!
  ! is_party_alive "$pid" /dev/null
  kill "$pid" 2>/dev/null
  wait "$pid" 2>/dev/null || true
  ! is_party_alive 1 /dev/null
}

@test "roster_list returns full record paths under PARTY_SOCKET_DIR" {
  for n in alpha beta gamma; do
    ensure_party_dir "$USER" "$n"
    rec=$(roster_record_path "$USER" "$n")
    roster_write "$rec" HOST_USER "$USER" PARTY_NAME "$n" \
      SOCKET "/tmp/s" SERVER_PID 1 CREATED 0
  done
  out=$(roster_list | sort | tr '\n' ' ')
  expected="$PARTY_SOCKET_DIR/party-$USER:alpha.d/roster $PARTY_SOCKET_DIR/party-$USER:beta.d/roster $PARTY_SOCKET_DIR/party-$USER:gamma.d/roster "
  [ "$out" = "$expected" ]
}