#!/usr/bin/env bash
# Tests for uninstall.sh against a throwaway $HOME (no real machine state touched).
# Run via `npm test` or directly: bash test/uninstall.test.sh
set -euo pipefail

ROOT="$(cd "$(dirname "$0")/.." && pwd)"
UNINSTALL="$ROOT/uninstall.sh"
FAILS=0

check() { # <name> <bash-expression>
	local name="$1"
	if bash -c "$2"; then
		echo "PASS  $name"
	else
		echo "FAIL  $name"
		FAILS=$((FAILS + 1))
	fi
}

# Fresh fake home with everything the kit can leave behind.
setup_fake_home() {
	export HOME="$(mktemp -d)"
	export SHELL=/bin/bash
	export PI_KIT_UNINSTALL=1
	export PI_KIT_KEEP_CONFIG=0
	export PI_KIT_KEEP_SKILLS=0

	mkdir -p "$HOME/.pi/agent/git/git.codelab.vc/ai/pi-kit"
	mkdir -p "$HOME/.agents/skills"
	mkdir -p "$HOME/.config/pi-kit"

	cat >"$HOME/.pi/agent/settings.json" <<'JSON'
{
  "packages": [
    "git:github.com/someone/other",
    { "source": "git:git.codelab.vc/ai/pi-kit@stable", "skills": ["skills/go-standards"] },
    "git:git.codelab.vc/ai/pi-kit@beta"
  ]
}
JSON
	echo "export JIRA_TOKEN='dummy'" >"$HOME/.config/pi-kit/env.sh"
	cat >"$HOME/.agents/skills/grill-me" <<'EOF'
skill content
EOF
	cat >"$HOME/.bashrc" <<'RC'
# user content
export FOO=1

# >>> pi-kit >>>
[ -f "$HOME/.config/pi-kit/env.sh" ] && . "$HOME/.config/pi-kit/env.sh"
# <<< pi-kit <<<

# more user content
RC
}

# --- 1. Full uninstall --------------------------------------------------------
setup_fake_home
bash "$UNINSTALL" >/dev/null
check "uninstall: settings.json keeps other packages" "grep -q 'git:github.com/someone/other' \"$HOME/.pi/agent/settings.json\""
check "uninstall: settings.json drops object-form pi-kit" "! grep -q 'pi-kit' \"$HOME/.pi/agent/settings.json\""
check "uninstall: clone dir removed" "test ! -e \"$HOME/.pi/agent/git/git.codelab.vc/ai/pi-kit\""
check "uninstall: config dir removed" "test ! -e \"$HOME/.config/pi-kit\""
check "uninstall: rc block removed" "! grep -q 'pi-kit' \"$HOME/.bashrc\""
check "uninstall: rc user content preserved" "grep -q 'export FOO=1' \"$HOME/.bashrc\" && grep -q 'more user content' \"$HOME/.bashrc\""
check "uninstall: public skill removed" "test ! -e \"$HOME/.agents/skills/grill-me\""

# --- 2. Keep config (secrets + rc) --------------------------------------------
setup_fake_home
PI_KIT_KEEP_CONFIG=1 bash "$UNINSTALL" >/dev/null
check "keep-config: env.sh kept" "test -e \"$HOME/.config/pi-kit/env.sh\""
check "keep-config: rc block kept" "grep -q 'pi-kit' \"$HOME/.bashrc\""
check "keep-config: package still removed" "! grep -q 'pi-kit' \"$HOME/.pi/agent/settings.json\""

# --- 3. Keep skills ------------------------------------------------------------
setup_fake_home
PI_KIT_KEEP_SKILLS=1 bash "$UNINSTALL" >/dev/null
check "keep-skills: skill kept" "test -e \"$HOME/.agents/skills/grill-me\""

# --- 4. Non-interactive without flag must refuse ---------------------------------
setup_fake_home
PI_KIT_UNINSTALL=0 bash "$UNINSTALL" >/dev/null 2>&1 && RC=0 || RC=$?
check "uninstall: refuses without confirmation flag in non-interactive mode" "test \"$RC\" -ne 0"
check "uninstall: nothing removed on refusal" "grep -q 'pi-kit' \"$HOME/.pi/agent/settings.json\" && test -e \"$HOME/.config/pi-kit/env.sh\""

# --- 5. Idempotent re-run -------------------------------------------------------
setup_fake_home
bash "$UNINSTALL" >/dev/null
bash "$UNINSTALL" >/dev/null 2>&1 || true
check "uninstall: re-run is harmless" "test ! -e \"$HOME/.config/pi-kit\" && ! grep -q 'pi-kit' \"$HOME/.pi/agent/settings.json\""

echo ""
if [ "$FAILS" -eq 0 ]; then
	echo "uninstall tests: ALL PASS"
	exit 0
else
	echo "uninstall tests: $FAILS FAILED"
	exit 1
fi