#!/bin/zsh -l
# launch-claude.sh — the Mac-side environment seam for matrix-bridge (decision D4).
#
# Invoked over SSH by the bot:  launch-claude.sh <repo_dir> <prompt...>
# Runs as a LOGIN shell (-l) on purpose: a non-interactive SSH shell otherwise gets a
# minimal env that loads neither ~/.zprofile nor ~/.zshrc, so PATH/credentials are missing
# and `claude` isn't found. Keep ALL Mac-environment knowledge here, not in the bot.
#
# FIRST DRAFT — validate by hand in Phase 0 (see AGENTS.md "Current state") before any bot
# code calls it. Watch for the keychain/credential caveat on the very first remote launch.

repo_dir="$1"
shift
prompt="$*"

if [[ -z "$repo_dir" || -z "$prompt" ]]; then
  print -u2 "usage: launch-claude.sh <repo_dir> <prompt>"
  exit 2
fi

# Fail loud on a bad directory — never launch Claude in the wrong place.
cd "$repo_dir" || { print -u2 "launch-claude: no such repo dir: $repo_dir"; exit 1; }

# Name the session "<repo> - <topic>" so it's identifiable in Remote Control's
# conversation index on the phone. Topic defaults to a trimmed slice of the message;
# the Phase-1 bot can override it with a curated topic via $MB_SESSION_NAME.
repo_name="${${repo_dir%/}:t}"
if [[ -n "$MB_SESSION_NAME" ]]; then
  session_name="$MB_SESSION_NAME"
else
  topic="${prompt//$'\n'/ }"          # collapse newlines to keep the name one line
  topic="${topic[1,60]}"              # cap length for a tidy index entry
  [[ ${#prompt} -gt 60 ]] && topic="${topic}…"
  session_name="${repo_name} - ${topic}"
fi

exec claude -n "$session_name" "$prompt"