#!/bin/bash
# Daily backup script for OpenClaw workspace to GitTea

set -e

TIMESTAMP=$(date +"%Y-%m-%d %H:%M")
LOG_FILE="/tmp/openclaw-backup.log"

echo "🔄 Starting OpenClaw backup... [$TIMESTAMP]" | tee -a "$LOG_FILE"

# GitTea credentials (stored in environment or config)
# For automated backups, credentials should be configured in ~/.git-credentials
# or use SSH keys

# Check if git credentials are configured
if ! git config --global credential.helper &>/dev/null; then
    echo "⚠️  Warning: Git credential helper not configured" | tee -a "$LOG_FILE"
    echo "   Run: git config --global credential.helper store" | tee -a "$LOG_FILE"
fi

# ntfy alert function
send_ntfy() {
    local title="$1"
    local message="$2"
    local priority="${3:-4}"
    local sound="${4:-default}"

    [[ -z "${NTFY_URL:-}" ]] && return 0
    [[ -z "${NTFY_TOPIC:-}" ]] && return 0

    # Enforce minimum priority (default 4)
    local minp="${NTFY_MIN_PRIORITY:-4}"
    if [[ "$priority" =~ ^[0-9]+$ ]] && [[ "$minp" =~ ^[0-9]+$ ]]; then
        if (( priority < minp )); then
            priority="$minp"
        fi
    fi

    curl -s -X POST "${NTFY_URL%/}/${NTFY_TOPIC}" \
        -H "Title: $title" \
        -H "Priority: $priority" \
        -H "Sound: $sound" \
        -d "$message" > /dev/null 2>&1 || true
}

# Snapshot critical OpenClaw state into workspace repo so updates/reinstalls are recoverable
snapshot_state_files() {
    local src_root="/home/openclaw/.openclaw"
    local dst_root="/home/openclaw/.openclaw/workspace/state-backup"

    mkdir -p "$dst_root" "$dst_root/cron" "$dst_root/skills" "$dst_root/devices"

    # Copy key state files if present
    [[ -f "$src_root/openclaw.json" ]] && cp "$src_root/openclaw.json" "$dst_root/openclaw.json"
    [[ -f "$src_root/cron/jobs.json" ]] && cp "$src_root/cron/jobs.json" "$dst_root/cron/jobs.json"
    [[ -f "$src_root/devices/paired.json" ]] && cp "$src_root/devices/paired.json" "$dst_root/devices/paired.json"

    # Skill metadata (if any)
    if compgen -G "$src_root/skills/*.json" > /dev/null; then
        cp "$src_root/skills"/*.json "$dst_root/skills/"
    fi

    # Helpful restore/readme metadata
    cat > "$dst_root/README.md" <<EOF
# OpenClaw State Backup

This folder is auto-generated by automations/backup-to-gitea.sh before each git backup.

Included state:
- openclaw.json
- cron/jobs.json
- devices/paired.json
- skills/*.json

Generated at: $(date -u +"%Y-%m-%dT%H:%M:%SZ")
EOF

    echo "🧠 State snapshot refreshed in state-backup/" | tee -a "$LOG_FILE"
}

# Function to backup a repo
backup_repo() {
    local path=$1
    local name=$2

    cd "$path"

    # Check if there are changes
    if [[ -n $(git status --porcelain) ]]; then
        echo "📦 $name: Changes detected, committing..." | tee -a "$LOG_FILE"
        git add -A
        git commit -m "Auto backup: $TIMESTAMP" || echo "⚠️  Commit failed or nothing to commit"

        echo "☁️  $name: Pushing to GitTea..." | tee -a "$LOG_FILE"
        if git push origin main 2>&1 | tee -a "$LOG_FILE"; then
            echo "✅ $name: Backup successful" | tee -a "$LOG_FILE"
        else
            echo "❌ $name: Push failed - check credentials" | tee -a "$LOG_FILE"
            send_ntfy "⚠️ Backup Failed" "$name push to Gitea failed. Check credentials." 4 default
        fi
    else
        echo "⏭️  $name: No changes to backup" | tee -a "$LOG_FILE"
    fi
}

# Backup workspace
echo "📂 Backing up workspace..." | tee -a "$LOG_FILE"
snapshot_state_files
backup_repo "/home/openclaw/.openclaw/workspace" "workspace"

echo "" | tee -a "$LOG_FILE"
echo "✅ Backup process complete!" | tee -a "$LOG_FILE"
echo "📄 Log saved to: $LOG_FILE" | tee -a "$LOG_FILE"

# Show recent backups
echo "" | tee -a "$LOG_FILE"
echo "📊 Recent backups:" | tee -a "$LOG_FILE"
cd /home/openclaw/.openclaw/workspace && git log --oneline -3 | tee -a "$LOG_FILE"

# Send success notification
send_ntfy "✅ Backup Complete" "OpenClaw backup to Gitea succeeded" 4 default