#!/bin/bash

# Shared setup for the bats tests, after CoreDesktop's: each test gets its own
# HOME and a bin dir at the front of PATH for fake commands. On top of that,
# HOME holds a fake CoreDesktop: an upstream repo, the deployed copy cloned
# from it, and a working copy at ~/Projects/coredesktop.

# Used by the .bats files that load this one
# shellcheck disable=SC2034
PROJECT="$(cd "$BATS_TEST_DIRNAME/.." && pwd)"

# UPSTREAM, DEPLOYED and WC are used by the .bats files
# shellcheck disable=SC2034
common_setup() {
  export HOME="$BATS_TEST_TMPDIR/home"
  export STUB_BIN="$BATS_TEST_TMPDIR/bin"
  export STUB_LOG="$BATS_TEST_TMPDIR/stub.log"
  export TMPDIR="$BATS_TEST_TMPDIR/tmp"
  mkdir -p "$HOME" "$STUB_BIN" "$TMPDIR"
  : > "$STUB_LOG"
  export PATH="$STUB_BIN:$PATH"
  unset XDG_CONFIG_HOME XDG_CACHE_HOME FLATPAK_ID COREDESKTOP_DEV_VIA_FLATPAK
  export GIT_AUTHOR_NAME=Test GIT_AUTHOR_EMAIL=test@localhost
  export GIT_COMMITTER_NAME=Test GIT_COMMITTER_EMAIL=test@localhost
  export GIT_CONFIG_NOSYSTEM=1

  UPSTREAM="$BATS_TEST_TMPDIR/upstream.git"
  DEPLOYED="$HOME/.local/share/coredesktop"
  WC="$HOME/Projects/coredesktop"
  make_coredesktop
}

setup() {
  common_setup
}

# A CoreDesktop upstream with one commit, and the deployed copy cloned from it.
# The fake utils.sh logs install_packages instead of installing anything.
make_coredesktop() {
  local src="$BATS_TEST_TMPDIR/src"
  git init -q --initial-branch=main "$src"
  mkdir -p "$src/updates.d"
  printf '%s\n' '#!/bin/bash' 'echo update' > "$src/update"
  chmod +x "$src/update"
  touch "$src/updates.d/.keep"
  printf '%s\n' '#!/bin/bash' 'install_packages() { echo "install_packages $*" >> "$STUB_LOG"; }' \
    > "$src/utils.sh"
  printf 'check:\n\ttrue\n' > "$src/Makefile"
  git -C "$src" add -A
  git -C "$src" commit -qm "CoreDesktop"
  git clone -q --bare "$src" "$UPSTREAM"
  rm -rf "$src"
  git clone -q "$UPSTREAM" "$DEPLOYED"
}

# Clone the working copy and point the settings at it
make_working_copy() {
  git clone -q "$UPSTREAM" "$WC"
  mkdir -p "$HOME/.config/coredesktop-dev"
  printf 'WORKING_COPY=%q\n' "$WC" > "$HOME/.config/coredesktop-dev/config"
}

# Run the coredesktop-dev command
cdd() {
  "$PROJECT/bin/coredesktop-dev" "$@"
}

# stub NAME [BODY]: put a fake NAME on PATH that appends "NAME args..." to
# $STUB_LOG and then runs BODY, a bash snippet that sees the args as "$@"
stub() {
  local name="$1" body="${2:-}"
  cat > "$STUB_BIN/$name" << EOF
#!/bin/bash
echo "$name \$*" >> "\$STUB_LOG"
$body
EOF
  chmod +x "$STUB_BIN/$name"
}

# called NAME ARGS...: true if the stub log has exactly the line "NAME ARGS..."
called() {
  grep -qxF "$*" "$STUB_LOG"
}

# not_called NAME: true if the stub NAME never ran
not_called() {
  ! grep -q "^$1 " "$STUB_LOG"
}

# uncalled NAME ARGS...: the opposite of called. (A bare "! called ..." would
# not fail the test: bats, like set -e, ignores the status of a ! command.)
uncalled() {
  ! called "$@"
}