#!/usr/bin/env bash
#
# wt-setup — Create a git worktree and prepare it for development.
#
# Usage: ./scripts/wt-setup <branch-name> [base-branch]
#
# Steps:
#   1. git worktree add (branches from HEAD or specified base)
#   2. Copy .env from packages with env files (app-lite, discord-bridge, appserver, appserver-admin)
#   3. Install dependencies in a node:22 container
#
set -euo pipefail

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

if [[ $# -lt 1 ]]; then
  echo "Usage: $0 <branch-name> [base-branch]"
  echo ""
  echo "Creates a worktree at $WORKTREES_DIR/<branch-name>"
  exit 1
fi

BRANCH="$1"
SAFE_NAME="${BRANCH//\//-}"
BASE="${2:-HEAD}"
WORKTREE_PATH="$WORKTREES_DIR/$BRANCH"

# --- 1. Create worktree ---
if [[ -d "$WORKTREE_PATH" ]]; then
  echo "✗ Worktree already exists at $WORKTREE_PATH"
  exit 1
fi

mkdir -p "$WORKTREES_DIR"
git worktree add "$WORKTREE_PATH" -b "$BRANCH" "$BASE"
echo "✔ Worktree created at $WORKTREE_PATH"
# --- 1b. Fix .git path to be relative (works from both host and container) ---
WORKTREE_GIT="$WORKTREE_PATH/.git"
if [[ -f "$WORKTREE_GIT" ]]; then
  # git resolves the admin dir from the worktree; rewrite the absolute
  # gitdir to a relative path so the worktree is relocatable (host/container)
  RELATIVE="$(git -C "$WORKTREE_PATH" rev-parse --path-format=relative --git-dir)"
  echo "gitdir: $RELATIVE" > "$WORKTREE_GIT"
  echo "✔ Rewrote .git to relative path: $RELATIVE"
fi

# --- 2. Copy .env files ---
# Packages that may have .env files
ENV_PACKAGES=(app-lite discord-bridge appserver docs)

for pkg in "${ENV_PACKAGES[@]}"; do
  SRC_DIR="$REPO_ROOT/packages/$pkg"
  DST_DIR="$WORKTREE_PATH/packages/$pkg"
  mkdir -p "$DST_DIR"

  if [[ -f "$SRC_DIR/.env" ]]; then
    cp "$SRC_DIR/.env" "$DST_DIR/.env"
    echo "✔ Copied packages/$pkg/.env"
  elif [[ -f "$SRC_DIR/.env.example" ]]; then
    cp "$SRC_DIR/.env.example" "$DST_DIR/.env"
    echo "✔ Copied packages/$pkg/.env.example as packages/$pkg/.env"
  else
    echo "⚠ No .env or .env.example found for packages/$pkg — skipped"
  fi
done

SETUP_NAME="setup-$SAFE_NAME"

echo ""
echo "Installing dependencies in node:22 container..."
docker rm -f "$SETUP_NAME" 2>/dev/null || true
docker run --rm \
  --name "$SETUP_NAME" \
  -v "$WORKTREE_PATH:/app" \
  node:22 \
  bash -c "cd /app && npm i -g pnpm && pnpm install && pnpm --filter @roomy-space/sdk build"
echo "✔ Dependencies installed, SDK built"

echo ""
echo "Worktree ready! Next step:"
echo "  ./scripts/wt-run $BRANCH --port <port>"