#!/usr/bin/env bash
#
# usync - Unified sync command for the Ultimate Notetaking System
#
# Syncs both nb notebooks and triggers Syncthing scans.
#
# Usage:
#   usync          - Sync everything
#   usync nb       - Sync only nb notebooks
#   usync st       - Sync only Syncthing folders
#   usync status   - Show sync status

set -euo pipefail

# Colors
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m' # No Color

log_info() {
    echo -e "${BLUE}[INFO]${NC} $1"
}

log_success() {
    echo -e "${GREEN}[OK]${NC} $1"
}

log_warn() {
    echo -e "${YELLOW}[WARN]${NC} $1"
}

log_error() {
    echo -e "${RED}[ERROR]${NC} $1"
}

sync_nb() {
    log_info "Syncing nb notebooks..."

    if ! command -v nb &> /dev/null; then
        log_error "nb not found in PATH"
        return 1
    fi

    # Get list of notebooks
    notebooks=$(nb notebooks --names 2>/dev/null || echo "")

    if [ -z "$notebooks" ]; then
        log_warn "No nb notebooks found"
        return 0
    fi

    # Sync each notebook
    for notebook in $notebooks; do
        log_info "  Syncing notebook: $notebook"
        if nb "$notebook:sync" 2>/dev/null; then
            log_success "  $notebook synced"
        else
            log_warn "  $notebook sync failed (no remote?)"
        fi
    done
}

sync_syncthing() {
    log_info "Triggering Syncthing scan..."

    if ! command -v syncthing &> /dev/null; then
        log_error "syncthing not found in PATH"
        return 1
    fi

    # Check if Syncthing is running
    if ! syncthing cli show system &> /dev/null; then
        log_warn "Syncthing is not running"
        return 1
    fi

    # Trigger scan on all folders
    if syncthing cli scan --all 2>/dev/null; then
        log_success "Syncthing scan triggered"
    else
        log_error "Failed to trigger Syncthing scan"
        return 1
    fi
}

show_status() {
    echo "=== Sync Status ==="
    echo ""

    # nb status
    echo "--- nb Notebooks ---"
    if command -v nb &> /dev/null; then
        nb notebooks 2>/dev/null || echo "  No notebooks"
        echo ""
        echo "Last sync times:"
        for notebook in $(nb notebooks --names 2>/dev/null); do
            nb_dir="${NB_DIR:-$HOME/.nb}"
            if [ -d "$nb_dir/$notebook/.git" ]; then
                last_commit=$(git -C "$nb_dir/$notebook" log -1 --format="%ar" 2>/dev/null || echo "never")
                echo "  $notebook: $last_commit"
            fi
        done
    else
        echo "  nb not installed"
    fi

    echo ""

    # Syncthing status
    echo "--- Syncthing ---"
    if command -v syncthing &> /dev/null && syncthing cli show system &> /dev/null; then
        syncthing cli show system 2>/dev/null | grep -E "(myID|startTime)" || true
        echo ""
        echo "Folders:"
        syncthing cli show config 2>/dev/null | jq -r '.folders[] | "  \(.label // .id): \(.path)"' 2>/dev/null || echo "  Unable to get folder info"
    else
        echo "  Syncthing not running"
    fi
}

# Main
case "${1:-all}" in
    nb)
        sync_nb
        ;;
    st|syncthing)
        sync_syncthing
        ;;
    status)
        show_status
        ;;
    all|"")
        sync_nb
        echo ""
        sync_syncthing
        echo ""
        log_success "All sync operations complete"
        ;;
    -h|--help|help)
        echo "usync - Unified sync command"
        echo ""
        echo "Usage:"
        echo "  usync          Sync everything (nb + Syncthing)"
        echo "  usync nb       Sync only nb notebooks"
        echo "  usync st       Trigger Syncthing scan"
        echo "  usync status   Show sync status"
        echo "  usync help     Show this help"
        ;;
    *)
        log_error "Unknown command: $1"
        echo "Run 'usync help' for usage"
        exit 1
        ;;
esac