#!/usr/bin/env bats
# tests/manifest-parser.bats — the one manifest parser, shared by install.sh and pkg-inventory.sh
#
# `packages/*.pkgs` is hand-written, so the parser's whole job is to forgive the ways a hand-edited
# list is wrong. The same function decides what install.sh tries to install and what pkg-inventory
# calls drift, so a manifest line must mean the same thing to both — which is why it lives in one
# file instead of being pasted into each caller (Refs #60: it was pasted twice).
#
# Observed through the function's exit status and stdout only:
#   names        first field of a line, one bare token; `#` and everything after it is a comment
#   CRLF         tolerated (the manifests get edited on more than one box)
#   blank lines  vanish
#   unreadable   non-zero with no names — an empty desired list must never be a silent success,
#                because "nothing desired" is exactly what a rebuild would install

setup() {
  TEST_TMP="$(mktemp -d)"
  LIB="$BATS_TEST_DIRNAME/../scripts/lib/manifest.sh"
}

teardown() { rm -rf "$TEST_TMP"; }

parse() { # $1 = manifest contents, verbatim
  printf '%s' "$1" > "$TEST_TMP/m.pkgs"
  run bash -c 'source "$1"; read_manifest "$2"' _ "$LIB" "$TEST_TMP/m.pkgs"
}

@test "inline notes, full-line comments, blank rows and CRLF come out as bare names" {
  parse $'# desired state\r\nghostty          # terminal\r\n\r\n   \r\nzoxide\r\n'
  [ "$status" -eq 0 ]
  [ "$(printf '%s\n' "$output" | tr '\n' ' ')" = "ghostty zoxide " ]
}

@test "only the first field of a line is a package" {
  # install.sh hands every emitted token straight to pacman, so a stray second token on a line
  # must never become an install target; whatever it is, the manifest did not declare it.
  parse $'neovim extra tokens here\n'
  [ "$output" = "neovim" ]
}

@test "a comment that names a package is not a package" {
  parse $'# vlc\n#typora\nbun\n'
  [ "$output" = "bun" ]
}

@test "an unreadable manifest fails loudly instead of yielding an empty desired list" {
  run --separate-stderr bash -c 'source "$1"; read_manifest "$2"' _ "$LIB" "$TEST_TMP/nope.pkgs"
  [ "$status" -ne 0 ]
  [ -z "$output" ]
  [[ "$stderr" == *nope.pkgs* ]]
}