#!/bin/bash
# Deploy DB zum VServer
# Usage: ./scripts/deploy-db.sh [--dry-run]
set -e

LOCAL_DB="data/tracker_remote.db"
REMOTE_DB="/opt/antragstracker/data/tracker.db"
REMOTE_HOST="vserver"
DRY_RUN=false

if [ "$1" = "--dry-run" ]; then
    DRY_RUN=true
    echo "🔍 DRY RUN — keine Änderungen"
    echo ""
fi

cd "$(dirname "$0")/.."

echo "=== DB Deploy ==="
echo "Lokale DB: $(du -sh $LOCAL_DB | cut -f1)"

# 0. Schema-Validierung
echo "0. Schema prüfen..."
EXPECTED_TABLES="vorlagen beratungen ketten ketten_glieder ki_bewertungen parteien antragsteller gremien orte referenzen"
MISSING=""
for tbl in $EXPECTED_TABLES; do
    EXISTS=$(sqlite3 "$LOCAL_DB" "SELECT COUNT(*) FROM sqlite_master WHERE type='table' AND name='$tbl'" 2>/dev/null)
    if [ "$EXISTS" != "1" ]; then
        MISSING="$MISSING $tbl"
    fi
done

if [ -n "$MISSING" ]; then
    echo "❌ FEHLER: Fehlende Tabellen:$MISSING"
    exit 1
fi
echo "   ✓ Alle ${#EXPECTED_TABLES[@]} Tabellen vorhanden"

# Stats
echo ""
echo "   Vorlagen:  $(sqlite3 "$LOCAL_DB" 'SELECT COUNT(*) FROM vorlagen')"
echo "   Ketten:    $(sqlite3 "$LOCAL_DB" 'SELECT COUNT(*) FROM ketten')"
echo "   KI-Bew.:   $(sqlite3 "$LOCAL_DB" 'SELECT COUNT(*) FROM ki_bewertungen')"
echo "   Matches:   $(sqlite3 "$LOCAL_DB" "SELECT COUNT(*) FROM ki_bewertungen WHERE typ='umsetzung_match'")"
echo "   Orte:      $(sqlite3 "$LOCAL_DB" 'SELECT COUNT(*) FROM orte WHERE lat IS NOT NULL')"
echo ""

# Flush WAL journal
echo "   Flushing WAL..."
sqlite3 "$LOCAL_DB" "PRAGMA wal_checkpoint(TRUNCATE)" 2>/dev/null
echo ""

if $DRY_RUN; then
    echo "🔍 Würde hochladen: $(du -sh $LOCAL_DB | cut -f1) nach $REMOTE_HOST:$REMOTE_DB"
    echo "🔍 Prod-DB Größe: $(ssh $REMOTE_HOST "du -sh $REMOTE_DB 2>/dev/null | cut -f1" || echo "N/A")"
    echo ""
    echo "DRY RUN fertig. Ohne --dry-run ausführen zum Deployen."
    exit 0
fi

# 1. Backup auf VServer
BACKUP_NAME="${REMOTE_DB}.bak-$(date +%Y%m%d-%H%M)"
echo "1. Backup Prod-DB..."
ssh $REMOTE_HOST "cp $REMOTE_DB $BACKUP_NAME"
echo "   → $BACKUP_NAME"

# 2. Upload
echo "2. Upload..."
scp "$LOCAL_DB" "$REMOTE_HOST:$REMOTE_DB"

# 3. Restart
echo "3. Restart Backend..."
ssh $REMOTE_HOST 'cd /opt/antragstracker && docker compose restart antragstracker' 2>&1 | grep -v "level=warning"

echo ""
echo "✅ Deploy fertig"
echo "Backup: $BACKUP_NAME"
echo "Rollback: ssh $REMOTE_HOST 'cp $BACKUP_NAME $REMOTE_DB && cd /opt/antragstracker && docker compose restart antragstracker'"