#!/usr/bin/env bash

# gstack-brain-uninstall — clean off-ramp for gstack-brain sync.

#

# Usage:

# gstack-brain-uninstall [--yes] [--delete-remote]

#

# Removes the git layer from ~/.gstack/ and clears sync config. Your local

# gstack memory (learnings, timelines, etc.) is NOT touched — this is an

# uninstall-sync command, not a delete-data command.

#

# Flags:

# --yes Skip the confirmation prompt.

# --delete-remote Also delete the GitHub repo via `gh repo delete`

# (interactive unless --yes is also passed).

#

# What it removes (in ~/.gstack/):

# .git/ — the sync repo's git data

# .gitignore — canonical ignore-all marker

# .gitattributes — merge driver declarations

# .brain-allowlist — sync path list

# .brain-privacy-map.json — sync privacy classifier

# .brain-queue.jsonl — pending queue

# .brain-discover-cursor — discover-new cursor

# .brain-last-push — timestamp marker

# .brain-skip.txt — user-maintained skip list

# .brain-sync.lock.d/ — lock dir (if present)

# .brain-sync-status.json — health status

# consumers.json — consumer/reader registry

#

# What it clears (via gstack-config):

# artifacts_sync_mode → off

# artifacts_sync_mode_prompted → false (so user re-prompts on re-init)

#

# What it does NOT touch:

# Project data (projects/*, retros/*, developer-profile.json, etc.)

# Consumer tokens in gstack-config (<name>_token keys)

# ~/.gstack-brain-remote.txt in your home directory

# The actual remote git repo (unless --delete-remote)

set -euo pipefail

GSTACK_HOME="${GSTACK_HOME:-$HOME/.gstack}"

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"

CONFIG_BIN="$SCRIPT_DIR/gstack-config"

# v1.27.0.0+ canonical name; brain-remote is the legacy fallback during migration.

if [ -f "$HOME/.gstack-artifacts-remote.txt" ]; then

REMOTE_FILE="$HOME/.gstack-artifacts-remote.txt"

else

REMOTE_FILE="$HOME/.gstack-brain-remote.txt"

fi

ASSUME_YES=0

DELETE_REMOTE=0

while [ $# -gt 0 ]; do

case "$1" in

--yes|-y) ASSUME_YES=1; shift ;;

--delete-remote) DELETE_REMOTE=1; shift ;;

--help|-h) sed -n '2,30p' "$0" | sed 's/^# \{0,1\}//'; exit 0 ;;

*) echo "Unknown flag: $1" >&2; exit 1 ;;

esac

done

if [ ! -d "$GSTACK_HOME/.git" ]; then

echo "gstack-brain-uninstall: nothing to do (~/.gstack/.git doesn't exist)."

exit 0

fi

REMOTE_URL=$(git -C "$GSTACK_HOME" remote get-url origin 2>/dev/null || echo "")

# ---- confirmation ----

if [ "$ASSUME_YES" != "1" ]; then

cat <<EOF

This will remove gstack-brain sync from this machine:

- Remove ~/.gstack/.git and sync config files

- Clear artifacts_sync_mode in gstack-config

- Remote: $REMOTE_URL will be $([ "$DELETE_REMOTE" = "1" ] && echo "DELETED" || echo "kept")

Local memory (learnings, plans, etc.) is NOT touched.

EOF

printf "Proceed? [y/N] "

read -r reply

case "$reply" in

y|Y|yes|Yes) ;;

*) echo "Aborted."; exit 0 ;;

esac

fi

# ---- delete remote if requested ----

if [ "$DELETE_REMOTE" = "1" ] && [ -n "$REMOTE_URL" ]; then

case "$REMOTE_URL" in

*github.com*|*@github*)

if command -v gh >/dev/null 2>&1; then

# Extract owner/repo from URL.

REPO_SLUG=$(echo "$REMOTE_URL" | sed -E 's#.*[:/]([^/:]+/[^/]+)(\.git)?$#\1#' | sed 's/\.git$//')

if [ -n "$REPO_SLUG" ]; then

echo "Deleting GitHub repo: $REPO_SLUG"

if [ "$ASSUME_YES" = "1" ]; then

gh repo delete "$REPO_SLUG" --yes 2>/dev/null || echo "gh repo delete failed; continuing local uninstall"

else

gh repo delete "$REPO_SLUG" 2>/dev/null || echo "gh repo delete failed; continuing local uninstall"

fi

fi

else

echo "--delete-remote requires the gh CLI. Skipping remote deletion."

fi

;;

*)

echo "--delete-remote only supports github.com remotes. Delete manually if needed: $REMOTE_URL"

;;

esac

fi

# ---- remove sync files ----

echo "Removing git layer and sync config files..."

rm -rf "$GSTACK_HOME/.git" 2>/dev/null || true

rm -f "$GSTACK_HOME/.gitignore" 2>/dev/null || true

rm -f "$GSTACK_HOME/.gitattributes" 2>/dev/null || true

rm -f "$GSTACK_HOME/.brain-allowlist" 2>/dev/null || true

rm -f "$GSTACK_HOME/.brain-privacy-map.json" 2>/dev/null || true

rm -f "$GSTACK_HOME/.brain-queue.jsonl" 2>/dev/null || true

rm -f "$GSTACK_HOME/.brain-discover-cursor" 2>/dev/null || true

rm -f "$GSTACK_HOME/.brain-last-push" 2>/dev/null || true

rm -f "$GSTACK_HOME/.brain-last-pull" 2>/dev/null || true

rm -f "$GSTACK_HOME/.brain-skip.txt" 2>/dev/null || true

rm -f "$GSTACK_HOME/.brain-sync-status.json" 2>/dev/null || true

rm -rf "$GSTACK_HOME/.brain-sync.lock.d" 2>/dev/null || true

# ---- unregister gbrain federated source + remove worktree (best-effort) ----

# The wireup helper handles: gbrain sources remove, git worktree remove,

# launchd plist (future). All best-effort; uninstall continues on failure.

WIREUP_BIN="$SCRIPT_DIR/gstack-gbrain-source-wireup"

if [ -x "$WIREUP_BIN" ]; then

"$WIREUP_BIN" --uninstall 2>/dev/null || true

fi

# ---- legacy consumers.json (no longer written by gstack-brain-init since v1.17.0.0) ----

rm -f "$GSTACK_HOME/consumers.json" 2>/dev/null || true

# ---- clear config keys ----

"$CONFIG_BIN" set artifacts_sync_mode off >/dev/null 2>&1 || true

"$CONFIG_BIN" set artifacts_sync_mode_prompted false >/dev/null 2>&1 || true

# ---- leave remote-helper file alone unless user asked to delete remote ----

if [ "$DELETE_REMOTE" = "1" ]; then

rm -f "$REMOTE_FILE" 2>/dev/null || true

else

if [ -f "$REMOTE_FILE" ]; then

echo "(keeping $REMOTE_FILE — remove manually if you want to forget the URL)"

fi

fi

cat <<EOF

gstack-brain uninstall complete.

Sync is off. ~/.gstack/ is a plain directory again.

Your project data, learnings, and profile are untouched.

To re-enable sync later: gstack-brain-init

EOF