#!/usr/bin/env bash
set -euo pipefail

# Install 3 maintenance cron jobs for OpenClaude local stack.
# Idempotent: replaces managed block, avoids duplicates.
#
# Usage:
#   ./scripts/install-cron.sh
#   ./scripts/install-cron.sh --user-home /home/myuser --model qwen2.5:3b

USER_HOME="${HOME}"
MODEL="qwen2.5-coder:7b"
REPO_PATH="${USER_HOME}/openclaude-LLM-local"
LOG_DIR="${USER_HOME}/openclaude-logs"
CRON_TMP="$(mktemp)"

while [[ $# -gt 0 ]]; do
  case "$1" in
    --user-home)
      USER_HOME="$2"
      REPO_PATH="${USER_HOME}/openclaude-LLM-local"
      LOG_DIR="${USER_HOME}/openclaude-logs"
      shift 2
      ;;
    --repo-path)
      REPO_PATH="$2"
      shift 2
      ;;
    --log-dir)
      LOG_DIR="$2"
      shift 2
      ;;
    --model)
      MODEL="$2"
      shift 2
      ;;
    *)
      echo "Unknown argument: $1"
      exit 2
      ;;
  esac
done

START_MARK="# BEGIN OPENCLAUDE_MANAGED_CRON"
END_MARK="# END OPENCLAUDE_MANAGED_CRON"

mkdir -p "$LOG_DIR"

current_cron="$(mktemp)"
if crontab -l > "$current_cron" 2>/dev/null; then
  :
else
  : > "$current_cron"
fi

# Remove old managed block if present
awk -v s="$START_MARK" -v e="$END_MARK" '
  $0 == s {inblock=1; next}
  $0 == e {inblock=0; next}
  !inblock {print}
' "$current_cron" > "$CRON_TMP"

cat >> "$CRON_TMP" <<EOF

$START_MARK
# 1) Daily status check
10 8 * * * cd $REPO_PATH/docs/rag-mcp-starter && ./status.sh --model $MODEL >> $LOG_DIR/status.log 2>&1
# 2) Weekly model refresh
30 4 * * 0 /usr/bin/ollama pull $MODEL >> $LOG_DIR/model-update.log 2>&1
# 3) Monthly safe stack upgrade
0 5 1 * * cd $REPO_PATH/docs/rag-mcp-starter && ./upgrade.sh --model $MODEL >> $LOG_DIR/stack-upgrade.log 2>&1
$END_MARK
EOF

crontab "$CRON_TMP"

rm -f "$current_cron" "$CRON_TMP"

echo "Cron jobs installed."
echo "Repo path: $REPO_PATH"
echo "Log dir:   $LOG_DIR"
echo "Model:     $MODEL"
echo
echo "Current crontab:"
crontab -l