#!/usr/bin/env bash
# install.sh — install & enable the semprini-maintainer systemd service.
#
# Run from this directory. Requires sudo for the systemd parts.
set -euo pipefail

DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
UNIT="semprini-maintainer.service"
DEST="/etc/systemd/system/$UNIT"

echo "→ Pre-flight checks"
command -v docker  >/dev/null || { echo "ERROR: docker not found"; exit 1; }
command -v python3 >/dev/null || { echo "ERROR: python3 not found"; exit 1; }

CLAUDE_BIN="$(python3 -c "import json;print(json.load(open('$DIR/config.json'))['claude_bin'])" 2>/dev/null || echo /home/paul/.local/bin/claude)"
[ -x "$CLAUDE_BIN" ] || echo "WARN: claude binary not executable at $CLAUDE_BIN"

if [ ! -f "$DIR/config.json" ]; then
  echo "ERROR: config.json missing. Run:"
  echo "    cp $DIR/config.example.json $DIR/config.json"
  echo "    $DIR/register-matrix-bot.sh"
  exit 1
fi

TOKEN="$(python3 -c "import json;print(json.load(open('$DIR/config.json'))['matrix']['access_token'])")"
case "$TOKEN" in
  ""|FILLED_BY_*) echo "ERROR: Matrix not provisioned. Run register-matrix-bot.sh first."; exit 1;;
esac

# Gitea (push/PR capability) is optional — warn but don't block if unprovisioned.
GTOK="$(python3 -c "import json;print(json.load(open('$DIR/config.json')).get('gitea',{}).get('token',''))")"
case "$GTOK" in
  ""|FILLED_BY_*) echo "WARN: Gitea not provisioned — the agent will not push or open PRs.";
                  echo "      Run register-gitea-bot.sh to enable it.";;
esac

echo "→ Syntax-checking maintainer.py"
python3 -m py_compile "$DIR/maintainer.py"

echo "→ Installing $UNIT"
sudo cp "$DIR/$UNIT" "$DEST"
sudo systemctl daemon-reload
sudo systemctl enable "$UNIT"
sudo systemctl restart "$UNIT"

echo
echo "✓ Installed and started."
echo "  Logs:    journalctl -u $UNIT -f"
echo "  Status:  systemctl status $UNIT"
echo "  Stop:    sudo systemctl stop $UNIT"