Launch

#!/usr/bin/env bash
# Launch Code OSS (VS Code from sources) with:
#   - a fresh, slimmed copy of the authenticated user-data-dir (so Copilot/GitHub auth works)
#   - an isolated --shared-data-dir (otherwise two instances share ~/.vscode-oss-shared and crash each other)
#   - unique debug ports for renderer (CDP), extension host, main process, and agent host
#
# Auth on macOS comes from the OS keychain (per-app, shared automatically) plus
# the encrypted blob in User/globalStorage/state.vscdb (per-UDD). The slim copy
# keeps the auth-relevant state and drops caches / workspaceStorage / logs.
#
# Prints a single JSON line to stdout with the chosen ports + paths so the
# caller can pick them up programmatically. Logs go to stderr.
#
# Usage:
#   launch.sh [--agents] [--source-user-data-dir <path>] [--repo <vscode-repo-root>]
#             [--clone-extensions] [--full] [-- <extra code.sh args>]
#
# Flags:
#   --clone-extensions  Copy the source extensions/ into the new profile (~10s).
#                       Default: start with an EMPTY extensions/ dir - fastest
#                       and conflict-free, but no third-party extensions.
#   --full              Copy the entire profile (incl. extensions). Use if the
#                       slim copy is missing something you need.
#
# Defaults:
#   --source-user-data-dir  $CODE_OSS_DEV_AUTHED_USER_DATA_DIR  (else ~/.vscode-oss-dev)
#   --repo                  $PWD if it looks like a vscode checkout; otherwise pass it explicitly

set -euo pipefail
umask 077

AGENTS=0
SOURCE_UDD="${CODE_OSS_DEV_AUTHED_USER_DATA_DIR:-$HOME/.vscode-oss-dev}"
REPO=""
EXTRA_ARGS=()
CLONE_EXTENSIONS=0
FULL=0

while [[ $# -gt 0 ]]; do
	case "$1" in
		--agents) AGENTS=1; shift ;;
		--source-user-data-dir) SOURCE_UDD="$2"; shift 2 ;;
		--repo) REPO="$2"; shift 2 ;;
		--clone-extensions|--copy-extensions) CLONE_EXTENSIONS=1; shift ;;
		--full) FULL=1; shift ;;
		--) shift; EXTRA_ARGS=("$@"); break ;;
		*) echo "Unknown arg: $1" >&2; exit 2 ;;
	esac
done

if [[ -z "$REPO" ]]; then
	if [[ -x "$PWD/scripts/code.sh" ]]; then
		REPO="$PWD"
	else
		echo "Could not find a vscode checkout in $PWD. Pass --repo <path>." >&2
		exit 2
	fi
fi

if [[ ! -d "$SOURCE_UDD" ]]; then
	echo "Source user-data-dir does not exist: $SOURCE_UDD" >&2
	echo "Pass --source-user-data-dir <path> or set CODE_OSS_DEV_AUTHED_USER_DATA_DIR." >&2
	exit 2
fi

pick_port() {
	node -e '
		const net = require("net");
		const s = net.createServer();
		s.listen(0, "127.0.0.1", () => { const p = s.address().port; s.close(() => console.log(p)); });
	'
}

CDP_PORT=$(pick_port)
EXTHOST_PORT=$(pick_port)
MAIN_PORT=$(pick_port)
AGENTHOST_PORT=$(pick_port)

STAMP=$(date +%Y%m%d-%H%M%S)-$$
RUN_DIR="${TMPDIR:-/tmp}/code-oss-dev/$STAMP"
DEST_UDD="$RUN_DIR/user-data"
SHARED_DATA_DIR="$RUN_DIR/shared-data"
mkdir -p "$DEST_UDD" "$SHARED_DATA_DIR"

# Excludes (deny-list, so future VS Code additions copy through by default).
# Anchored excludes (starting with /) match only at the top level so we don't
# accidentally strip files inside subdirs that share a name.
EXCLUDES=(
	'/extensions'                                       # handled separately below
	'/workspaceStorage' 'User/workspaceStorage'         # per-workspace state, incl. chat sessions
	'User/History'                                      # local file edit history
	'/CachedExtensionVSIXs'                             # backup VSIXs
	'/logs'
	'/Cache' '/Code Cache' '/CachedData' '/component_crx_cache'
	'/GPUCache' '/ShaderCache' '/Dawn*Cache'
	'/Backups' '/blob_storage' '/BrowserMetrics' '/Crashpad'
	'/Session Storage'
	'/Singleton*'
	'*.lock' '*.sock'
)

if [[ "$FULL" == "1" ]]; then
	echo "[launch.sh] full copy: $SOURCE_UDD -> $DEST_UDD" >&2
	rsync -a "$SOURCE_UDD/" "$DEST_UDD/"
else
	echo "[launch.sh] slim copy: $SOURCE_UDD -> $DEST_UDD" >&2
	RSYNC_ARGS=(-a)
	for e in "${EXCLUDES[@]}"; do RSYNC_ARGS+=(--exclude="$e"); done
	rsync "${RSYNC_ARGS[@]}" "$SOURCE_UDD/" "$DEST_UDD/"
fi

# Extensions:
#   --full