#!/usr/bin/env bash
# Set up gstack for local development — test skills from within this repo.
#
# Creates .claude/skills/gstack → (symlink to repo root) so Claude Code
# discovers skills from your working tree. Changes take effect immediately.
#
# Also copies .env from the main worktree if this is a Conductor workspace
# or git worktree (so API keys carry over automatically).
#
# Usage: bin/dev-setup       # set up
#        bin/dev-teardown    # clean up
set -e

REPO_ROOT="$(cd "$(dirname "$0")/.." && pwd)"

# 1. Copy .env from main worktree (if we're a worktree and don't have one)
if [ ! -f "$REPO_ROOT/.env" ]; then
  MAIN_WORKTREE="$(git -C "$REPO_ROOT" worktree list --porcelain 2>/dev/null | head -1 | sed 's/^worktree //')"
  if [ -n "$MAIN_WORKTREE" ] && [ "$MAIN_WORKTREE" != "$REPO_ROOT" ] && [ -f "$MAIN_WORKTREE/.env" ]; then
    cp "$MAIN_WORKTREE/.env" "$REPO_ROOT/.env"
    echo "Copied .env from main worktree ($MAIN_WORKTREE)"
  fi
fi

# 2. Install dependencies
if [ ! -d "$REPO_ROOT/node_modules" ]; then
  echo "Installing dependencies..."
  (cd "$REPO_ROOT" && bun install)
fi

# 3. Create .claude/skills/ inside the repo
mkdir -p "$REPO_ROOT/.claude/skills"

# 4. Symlink .claude/skills/gstack → repo root
# This makes setup think it's inside a real .claude/skills/ directory
GSTACK_LINK="$REPO_ROOT/.claude/skills/gstack"
if [ -L "$GSTACK_LINK" ]; then
  echo "Updating existing symlink..."
  rm "$GSTACK_LINK"
elif [ -d "$GSTACK_LINK" ]; then
  echo "Error: .claude/skills/gstack is a real directory, not a symlink." >&2
  echo "Remove it manually if you want to use dev mode." >&2
  exit 1
fi
ln -s "$REPO_ROOT" "$GSTACK_LINK"

# 5. Create .agents/skills/gstack → repo root (for Codex/Gemini/Cursor)
mkdir -p "$REPO_ROOT/.agents/skills"
AGENTS_LINK="$REPO_ROOT/.agents/skills/gstack"
if [ -L "$AGENTS_LINK" ]; then
  rm "$AGENTS_LINK"
elif [ -d "$AGENTS_LINK" ]; then
  echo "Warning: .agents/skills/gstack is a real directory, skipping." >&2
fi
if [ ! -e "$AGENTS_LINK" ]; then
  ln -s "$REPO_ROOT" "$AGENTS_LINK"
fi

# 6. Run setup via the symlink so it detects .claude/skills/ as its parent.
#
# Workspace/dev setup MUST be non-interactive: Conductor runs this under a
# forwarded pty, so any `read` in setup (skill-prefix prompt, plan-tune hook
# consent) would hang the workspace forever. Detaching stdin makes every setup
# prompt take its smart non-interactive default (flat skill names, etc.).
#
# `--plan-tune-hooks=prompt` is load-bearing, not redundant: stdin alone only
# suppresses the *prompt* branch. A saved `plan_tune_hooks: yes` or an exported
# GSTACK_PLAN_TUNE_HOOKS=yes would still resolve to "install" and rewrite the
# user's global ~/.claude/settings.json to point at THIS ephemeral worktree —
# which breaks once the workspace is deleted. The flag has highest precedence,
# so it pins resolution to "prompt", and closed stdin then makes prompt-mode a
# no-op skip (no install, no decline marker). A dev workspace must never mutate
# global settings.json. To install the hooks, run `./setup --plan-tune-hooks`
# directly (outside dev-setup). Saved prefix/other config preferences still apply.
"$GSTACK_LINK/setup" --plan-tune-hooks=prompt </dev/null

echo ""
echo "Dev mode active. Skills resolve from this working tree."
echo "  .claude/skills/gstack → $REPO_ROOT"
echo "  .agents/skills/gstack → $REPO_ROOT"
echo "Edit any SKILL.md and test immediately — no copy/deploy needed."
echo ""
echo "To tear down: bin/dev-teardown"