An den Verantaltungen und Locations gearbeitet

2026-04-05 23:04:09 +02:00
parent b81ad25c9f
commit 0f9f109067
65 changed files with 5260 additions and 3 deletions
--- a/src/main/java/de/oaa/xxx/location/LocationController.java
+++ b/src/main/java/de/oaa/xxx/location/LocationController.java
@@ -0,0 +1,425 @@
+package de.oaa.xxx.location;
+
+import de.oaa.xxx.location.entity.*;
+import de.oaa.xxx.location.repository.*;
+import de.oaa.xxx.user.UserService;
+import jakarta.transaction.Transactional;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.security.Principal;
+import java.time.LocalDateTime;
+import java.util.*;
+import java.util.stream.Collectors;
+
+@RestController
+@RequestMapping("/locations")
+public class LocationController {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(LocationController.class);
+    private static final int MAX_GALLERY_IMAGES = 20;
+    private static final int MAX_BATCH_SIZE     = 50;
+
+    private final LocationRepository            locationRepo;
+    private final LocationImageRepository       imageRepo;
+    private final LocationOpeningHoursRepository hoursRepo;
+    private final LocationEventRepository       eventRepo;
+    private final LocationEventAttendeeRepository attendeeRepo;
+    private final LocationFollowRepository      followRepo;
+    private final UserService                   userService;
+
+    public LocationController(LocationRepository locationRepo,
+                              LocationImageRepository imageRepo,
+                              LocationOpeningHoursRepository hoursRepo,
+                              LocationEventRepository eventRepo,
+                              LocationEventAttendeeRepository attendeeRepo,
+                              LocationFollowRepository followRepo,
+                              UserService userService) {
+        this.locationRepo  = locationRepo;
+        this.imageRepo     = imageRepo;
+        this.hoursRepo     = hoursRepo;
+        this.eventRepo     = eventRepo;
+        this.attendeeRepo  = attendeeRepo;
+        this.followRepo    = followRepo;
+        this.userService   = userService;
+    }
+
+    // ── DTOs ─────────────────────────────────────────────────────────────────
+
+    record IdsResult(List<UUID> ids, int total) {}
+
+    record LocationPreviewDto(UUID locationId, String name, String profilePictureLq, double distanzKm) {}
+
+    record OpeningHourDto(int dayOfWeek, String openTime, String closeTime, boolean closed) {}
+
+    record GalleryImageDto(UUID imageId, String imageData) {}
+
+    record LocationDetailDto(
+            UUID locationId,
+            UUID ownerId,
+            String name,
+            String description,
+            String profilePictureHq,
+            String profilePictureLq,
+            Double lat,
+            Double lon,
+            String street,
+            String city,
+            boolean ownershipConfirmed,
+            LocalDateTime createdAt,
+            List<GalleryImageDto> gallery,
+            List<OpeningHourDto> openingHours,
+            boolean following
+    ) {}
+
+    record CreateRequest(
+            String name,
+            String description,
+            String profilePictureLq,
+            String profilePictureHq,
+            Double lat,
+            Double lon,
+            String street,
+            String city,
+            boolean ownershipConfirmed
+    ) {}
+
+    record UpdateRequest(
+            String name,
+            String description,
+            String profilePictureLq,
+            String profilePictureHq,
+            Double lat,
+            Double lon,
+            String street,
+            String city
+    ) {}
+
+    record GalleryUploadRequest(String imageData) {}
+
+    // ── Suche / IDs ──────────────────────────────────────────────────────────
+
+    /**
+     * Gibt alle Location-IDs zurück, sortiert nach Entfernung vom angegebenen Punkt.
+     */
+    @GetMapping("/ids")
+    public ResponseEntity<IdsResult> getIds(
+            @RequestParam double lat,
+            @RequestParam double lon,
+            @RequestParam(defaultValue = "50") int maxDistanceKm,
+            Principal principal) {
+
+        userService.requireUser(principal);
+
+        List<UUID> sorted = locationRepo.findByLatIsNotNullAndLonIsNotNull().stream()
+                .filter(l -> haversineKm(lat, lon, l.getLat(), l.getLon()) <= maxDistanceKm)
+                .sorted(Comparator.comparingDouble(l -> haversineKm(lat, lon, l.getLat(), l.getLon())))
+                .map(LocationEntity::getLocationId)
+                .collect(Collectors.toList());
+
+        return ResponseEntity.ok(new IdsResult(sorted, sorted.size()));
+    }
+
+    /**
+     * Batch-Laden von Location-Previews (Name + LQ-Bild + Distanz).
+     * Benötigt lat/lon für die Distanzberechnung.
+     */
+    @PostMapping("/batch")
+    public ResponseEntity<List<LocationPreviewDto>> getBatch(
+            @RequestBody BatchRequest request,
+            Principal principal) {
+
+        userService.requireUser(principal);
+        if (request.ids() == null || request.ids().isEmpty()) return ResponseEntity.ok(List.of());
+
+        List<UUID> ids = request.ids().stream().filter(Objects::nonNull).limit(MAX_BATCH_SIZE).toList();
+        Map<UUID, LocationEntity> byId = locationRepo.findAllById(ids).stream()
+                .collect(Collectors.toMap(LocationEntity::getLocationId, l -> l));
+
+        double refLat = request.lat() != null ? request.lat() : 0;
+        double refLon = request.lon() != null ? request.lon() : 0;
+
+        List<LocationPreviewDto> result = ids.stream()
+                .map(byId::get)
+                .filter(Objects::nonNull)
+                .map(l -> new LocationPreviewDto(
+                        l.getLocationId(),
+                        l.getName(),
+                        l.getProfilePictureLq(),
+                        l.getLat() != null && l.getLon() != null
+                                ? Math.round(haversineKm(refLat, refLon, l.getLat(), l.getLon()) * 10.0) / 10.0
+                                : -1))
+                .toList();
+
+        return ResponseEntity.ok(result);
+    }
+
+    record BatchRequest(List<UUID> ids, Double lat, Double lon) {}
+
+    /**
+     * Meine eigenen Locations (IDs, neueste zuerst).
+     */
+    @GetMapping("/mine")
+    public ResponseEntity<IdsResult> getMine(Principal principal) {
+        UUID myId = userService.requireUser(principal).getUserId();
+        List<UUID> ids = locationRepo.findByOwnerIdOrderByCreatedAtDesc(myId).stream()
+                .map(LocationEntity::getLocationId)
+                .toList();
+        return ResponseEntity.ok(new IdsResult(ids, ids.size()));
+    }
+
+    // ── Detail ───────────────────────────────────────────────────────────────
+
+    @GetMapping("/{locationId}")
+    public ResponseEntity<LocationDetailDto> getDetail(
+            @PathVariable UUID locationId,
+            Principal principal) {
+
+        UUID myId = userService.requireUser(principal).getUserId();
+        return locationRepo.findById(locationId)
+                .map(l -> ResponseEntity.ok(toDetail(l, myId)))
+                .orElse(ResponseEntity.notFound().build());
+    }
+
+    // ── CRUD ─────────────────────────────────────────────────────────────────
+
+    @PostMapping
+    public ResponseEntity<LocationDetailDto> create(
+            @RequestBody CreateRequest req,
+            Principal principal) {
+
+        UUID myId = userService.requireUser(principal).getUserId();
+
+        if (req.name() == null || req.name().isBlank()) return ResponseEntity.badRequest().build();
+
+        LocationEntity loc = new LocationEntity();
+        loc.setLocationId(UUID.randomUUID());
+        loc.setOwnerId(myId);
+        loc.setName(req.name().trim());
+        loc.setDescription(req.description() != null ? req.description().trim() : null);
+        loc.setProfilePictureLq(req.profilePictureLq());
+        loc.setProfilePictureHq(req.profilePictureHq());
+        loc.setLat(req.lat());
+        loc.setLon(req.lon());
+        loc.setStreet(req.street());
+        loc.setCity(req.city());
+        loc.setOwnershipConfirmed(req.ownershipConfirmed());
+        loc.setCreatedAt(LocalDateTime.now());
+        locationRepo.save(loc);
+
+        LOGGER.info("User {} hat Location {} angelegt", myId, loc.getLocationId());
+        return ResponseEntity.status(201).body(toDetail(loc, myId));
+    }
+
+    @PutMapping("/{locationId}")
+    public ResponseEntity<LocationDetailDto> update(
+            @PathVariable UUID locationId,
+            @RequestBody UpdateRequest req,
+            Principal principal) {
+
+        UUID myId = userService.requireUser(principal).getUserId();
+        var opt = locationRepo.findById(locationId);
+        if (opt.isEmpty()) return ResponseEntity.notFound().build();
+        LocationEntity loc = opt.get();
+        if (!loc.getOwnerId().equals(myId)) return ResponseEntity.status(403).build();
+
+        if (req.name() != null && !req.name().isBlank()) loc.setName(req.name().trim());
+        if (req.description() != null) loc.setDescription(req.description().trim());
+        if (req.profilePictureLq() != null) loc.setProfilePictureLq(req.profilePictureLq());
+        if (req.profilePictureHq() != null) loc.setProfilePictureHq(req.profilePictureHq());
+        if (req.lat() != null) loc.setLat(req.lat());
+        if (req.lon() != null) loc.setLon(req.lon());
+        if (req.street() != null) loc.setStreet(req.street());
+        if (req.city() != null) loc.setCity(req.city());
+        locationRepo.save(loc);
+
+        return ResponseEntity.ok(toDetail(loc, myId));
+    }
+
+    @Transactional
+    @DeleteMapping("/{locationId}")
+    public ResponseEntity<Void> delete(
+            @PathVariable UUID locationId,
+            Principal principal) {
+
+        UUID myId = userService.requireUser(principal).getUserId();
+        var opt = locationRepo.findById(locationId);
+        if (opt.isEmpty()) return ResponseEntity.notFound().build();
+        if (!opt.get().getOwnerId().equals(myId)) return ResponseEntity.status(403).build();
+
+        // Kaskade: Events + Attendees + Bilder + Öffnungszeiten + Follows löschen
+        eventRepo.findByLocationIdOrderByStartAtAsc(locationId).forEach(e -> {
+            attendeeRepo.deleteByEventId(e.getEventId());
+        });
+        eventRepo.deleteByLocationId(locationId);
+        imageRepo.deleteByLocationId(locationId);
+        hoursRepo.deleteByLocationId(locationId);
+        followRepo.deleteByLocationId(locationId);
+        locationRepo.deleteById(locationId);
+
+        LOGGER.info("User {} hat Location {} gelöscht", myId, locationId);
+        return ResponseEntity.noContent().build();
+    }
+
+    // ── Galerie ───────────────────────────────────────────────────────────────
+
+    @PostMapping("/{locationId}/gallery")
+    public ResponseEntity<GalleryImageDto> uploadGalleryImage(
+            @PathVariable UUID locationId,
+            @RequestBody GalleryUploadRequest req,
+            Principal principal) {
+
+        UUID myId = userService.requireUser(principal).getUserId();
+        var opt = locationRepo.findById(locationId);
+        if (opt.isEmpty()) return ResponseEntity.notFound().build();
+        if (!opt.get().getOwnerId().equals(myId)) return ResponseEntity.status(403).build();
+        if (req.imageData() == null || req.imageData().isBlank()) return ResponseEntity.badRequest().build();
+        if (imageRepo.countByLocationId(locationId) >= MAX_GALLERY_IMAGES) return ResponseEntity.status(422).build();
+
+        LocationImageEntity img = new LocationImageEntity();
+        img.setImageId(UUID.randomUUID());
+        img.setLocationId(locationId);
+        img.setImageData(req.imageData());
+        img.setUploadedAt(LocalDateTime.now());
+        imageRepo.save(img);
+
+        return ResponseEntity.status(201).body(new GalleryImageDto(img.getImageId(), img.getImageData()));
+    }
+
+    @Transactional
+    @DeleteMapping("/{locationId}/gallery/{imageId}")
+    public ResponseEntity<Void> deleteGalleryImage(
+            @PathVariable UUID locationId,
+            @PathVariable UUID imageId,
+            Principal principal) {
+
+        UUID myId = userService.requireUser(principal).getUserId();
+        var locOpt = locationRepo.findById(locationId);
+        if (locOpt.isEmpty()) return ResponseEntity.notFound().build();
+        if (!locOpt.get().getOwnerId().equals(myId)) return ResponseEntity.status(403).build();
+
+        var imgOpt = imageRepo.findById(imageId);
+        if (imgOpt.isEmpty()) return ResponseEntity.notFound().build();
+        if (!imgOpt.get().getLocationId().equals(locationId)) return ResponseEntity.status(400).build();
+
+        imageRepo.delete(imgOpt.get());
+        return ResponseEntity.noContent().build();
+    }
+
+    // ── Öffnungszeiten ────────────────────────────────────────────────────────
+
+    @GetMapping("/{locationId}/opening-hours")
+    public ResponseEntity<List<OpeningHourDto>> getOpeningHours(
+            @PathVariable UUID locationId,
+            Principal principal) {
+
+        userService.requireUser(principal);
+        if (!locationRepo.existsById(locationId)) return ResponseEntity.notFound().build();
+
+        List<OpeningHourDto> dtos = hoursRepo.findByLocationIdOrderByDayOfWeek(locationId).stream()
+                .map(h -> new OpeningHourDto(h.getDayOfWeek(), h.getOpenTime(), h.getCloseTime(), h.isClosed()))
+                .toList();
+        return ResponseEntity.ok(dtos);
+    }
+
+    /**
+     * Setzt die Öffnungszeiten einer Location vollständig neu (kompletter Ersatz).
+     */
+    @Transactional
+    @PutMapping("/{locationId}/opening-hours")
+    public ResponseEntity<List<OpeningHourDto>> setOpeningHours(
+            @PathVariable UUID locationId,
+            @RequestBody List<OpeningHourDto> hours,
+            Principal principal) {
+
+        UUID myId = userService.requireUser(principal).getUserId();
+        var opt = locationRepo.findById(locationId);
+        if (opt.isEmpty()) return ResponseEntity.notFound().build();
+        if (!opt.get().getOwnerId().equals(myId)) return ResponseEntity.status(403).build();
+
+        hoursRepo.deleteByLocationId(locationId);
+
+        List<LocationOpeningHoursEntity> saved = new ArrayList<>();
+        for (OpeningHourDto dto : hours) {
+            if (dto.dayOfWeek() < 1 || dto.dayOfWeek() > 7) continue;
+            LocationOpeningHoursEntity e = new LocationOpeningHoursEntity();
+            e.setHoursId(UUID.randomUUID());
+            e.setLocationId(locationId);
+            e.setDayOfWeek(dto.dayOfWeek());
+            e.setOpenTime(dto.openTime());
+            e.setCloseTime(dto.closeTime());
+            e.setClosed(dto.closed());
+            saved.add(hoursRepo.save(e));
+        }
+
+        return ResponseEntity.ok(saved.stream()
+                .map(h -> new OpeningHourDto(h.getDayOfWeek(), h.getOpenTime(), h.getCloseTime(), h.isClosed()))
+                .toList());
+    }
+
+    // ── Follow ────────────────────────────────────────────────────────────────
+
+    @PostMapping("/{locationId}/follow")
+    public ResponseEntity<Map<String, Object>> toggleFollow(
+            @PathVariable UUID locationId,
+            Principal principal) {
+
+        UUID myId = userService.requireUser(principal).getUserId();
+        if (!locationRepo.existsById(locationId)) return ResponseEntity.notFound().build();
+
+        var existing = followRepo.findByUserIdAndLocationId(myId, locationId);
+        boolean following;
+        if (existing.isPresent()) {
+            followRepo.delete(existing.get());
+            following = false;
+        } else {
+            var f = new de.oaa.xxx.location.entity.LocationFollowEntity();
+            f.setFollowId(UUID.randomUUID());
+            f.setLocationId(locationId);
+            f.setUserId(myId);
+            f.setFollowedAt(LocalDateTime.now());
+            followRepo.save(f);
+            following = true;
+        }
+        return ResponseEntity.ok(Map.of("following", following));
+    }
+
+    @GetMapping("/followed")
+    public ResponseEntity<IdsResult> getFollowed(Principal principal) {
+        UUID myId = userService.requireUser(principal).getUserId();
+        List<UUID> ids = followRepo.findByUserId(myId).stream()
+                .map(de.oaa.xxx.location.entity.LocationFollowEntity::getLocationId)
+                .toList();
+        return ResponseEntity.ok(new IdsResult(ids, ids.size()));
+    }
+
+    // ── Helpers ───────────────────────────────────────────────────────────────
+
+    private LocationDetailDto toDetail(LocationEntity l, UUID myId) {
+        List<GalleryImageDto> gallery = imageRepo.findByLocationIdOrderByUploadedAtAsc(l.getLocationId()).stream()
+                .map(i -> new GalleryImageDto(i.getImageId(), i.getImageData()))
+                .toList();
+        List<OpeningHourDto> hours = hoursRepo.findByLocationIdOrderByDayOfWeek(l.getLocationId()).stream()
+                .map(h -> new OpeningHourDto(h.getDayOfWeek(), h.getOpenTime(), h.getCloseTime(), h.isClosed()))
+                .toList();
+        boolean following = followRepo.findByUserIdAndLocationId(myId, l.getLocationId()).isPresent();
+        return new LocationDetailDto(
+                l.getLocationId(), l.getOwnerId(), l.getName(), l.getDescription(),
+                l.getProfilePictureHq(), l.getProfilePictureLq(),
+                l.getLat(), l.getLon(), l.getStreet(), l.getCity(),
+                l.isOwnershipConfirmed(), l.getCreatedAt(),
+                gallery, hours, following);
+    }
+
+    static double haversineKm(double lat1, double lon1, double lat2, double lon2) {
+        final double R = 6371.0;
+        double dLat = Math.toRadians(lat2 - lat1);
+        double dLon = Math.toRadians(lon2 - lon1);
+        double a = Math.sin(dLat / 2) * Math.sin(dLat / 2)
+                + Math.cos(Math.toRadians(lat1)) * Math.cos(Math.toRadians(lat2))
+                * Math.sin(dLon / 2) * Math.sin(dLon / 2);
+        return R * 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
+    }
+}
--- a/src/main/java/de/oaa/xxx/location/LocationEventController.java
+++ b/src/main/java/de/oaa/xxx/location/LocationEventController.java
@@ -0,0 +1,384 @@
+package de.oaa.xxx.location;
+
+import java.security.Principal;
+import java.time.LocalDateTime;
+import java.util.Comparator;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Set;
+import java.util.UUID;
+import java.util.function.Function;
+import java.util.stream.Collectors;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import de.oaa.xxx.location.entity.LocationEventAttendeeEntity;
+import de.oaa.xxx.location.entity.LocationEventEntity;
+import de.oaa.xxx.location.entity.LocationFollowEntity;
+import de.oaa.xxx.location.repository.LocationEventAttendeeRepository;
+import de.oaa.xxx.location.repository.LocationEventRepository;
+import de.oaa.xxx.location.repository.LocationFollowRepository;
+import de.oaa.xxx.location.repository.LocationRepository;
+import de.oaa.xxx.user.UserEntity;
+import de.oaa.xxx.user.UserRepository;
+import de.oaa.xxx.user.UserService;
+import jakarta.transaction.Transactional;
+
+@RestController
+public class LocationEventController {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(LocationEventController.class);
+    private static final int MAX_BATCH_SIZE = 50;
+
+    private final LocationRepository            locationRepo;
+    private final LocationEventRepository       eventRepo;
+    private final LocationEventAttendeeRepository attendeeRepo;
+    private final LocationFollowRepository      followRepo;
+    private final UserRepository                userRepo;
+    private final UserService                   userService;
+
+    public LocationEventController(LocationRepository locationRepo,
+                                   LocationEventRepository eventRepo,
+                                   LocationEventAttendeeRepository attendeeRepo,
+                                   LocationFollowRepository followRepo,
+                                   UserRepository userRepo,
+                                   UserService userService) {
+        this.locationRepo  = locationRepo;
+        this.eventRepo     = eventRepo;
+        this.attendeeRepo  = attendeeRepo;
+        this.followRepo    = followRepo;
+        this.userRepo      = userRepo;
+        this.userService   = userService;
+    }
+
+    // ── DTOs ─────────────────────────────────────────────────────────────────
+
+    record IdsResult(List<UUID> ids, int total) {}
+
+    record EventPreviewDto(
+            UUID eventId,
+            UUID locationId,
+            String locationName,
+            String title,
+            String imageData,
+            LocalDateTime startAt,
+            double distanzKm,
+            long attendeeCount,
+            boolean attendingMe
+    ) {}
+
+    record AttendeeDto(UUID userId, String name, String profilePictureLq, String geschlecht) {}
+
+    record EventDetailDto(
+            UUID eventId,
+            UUID locationId,
+            String locationName,
+            String title,
+            String description,
+            String imageData,
+            LocalDateTime startAt,
+            LocalDateTime createdAt,
+            boolean attendingMe,
+            List<AttendeeDto> attendees
+    ) {}
+
+    record CreateEventRequest(String title, String description, String imageData, LocalDateTime startAt) {}
+
+    record UpdateEventRequest(String title, String description, String imageData, LocalDateTime startAt) {}
+
+    record BatchRequest(List<UUID> ids, Double lat, Double lon) {}
+
+    // ── Events einer Location ─────────────────────────────────────────────────
+
+    @GetMapping("/locations/{locationId}/events")
+    public ResponseEntity<List<EventPreviewDto>> getEventsForLocation(
+            @PathVariable UUID locationId,
+            Principal principal) {
+
+        UUID myId = userService.requireUser(principal).getUserId();
+        if (!locationRepo.existsById(locationId)) return ResponseEntity.notFound().build();
+
+        var location = locationRepo.findById(locationId).orElseThrow();
+        double refLat = location.getLat() != null ? location.getLat() : 0;
+        double refLon = location.getLon() != null ? location.getLon() : 0;
+
+        List<EventPreviewDto> dtos = eventRepo.findByLocationIdOrderByStartAtAsc(locationId).stream()
+                .map(e -> toPreview(e, location.getName(), refLat, refLon, myId))
+                .toList();
+        return ResponseEntity.ok(dtos);
+    }
+
+    @PostMapping("/locations/{locationId}/events")
+    public ResponseEntity<EventDetailDto> createEvent(
+            @PathVariable UUID locationId,
+            @RequestBody CreateEventRequest req,
+            Principal principal) {
+
+        UUID myId = userService.requireUser(principal).getUserId();
+        var locOpt = locationRepo.findById(locationId);
+        if (locOpt.isEmpty()) return ResponseEntity.notFound().build();
+        if (!locOpt.get().getOwnerId().equals(myId)) return ResponseEntity.status(403).build();
+        if (req.title() == null || req.title().isBlank()) return ResponseEntity.badRequest().build();
+        if (req.startAt() == null) return ResponseEntity.badRequest().build();
+
+        LocationEventEntity event = new LocationEventEntity();
+        event.setEventId(UUID.randomUUID());
+        event.setLocationId(locationId);
+        event.setTitle(req.title().trim());
+        event.setDescription(req.description() != null ? req.description().trim() : null);
+        event.setImageData(req.imageData());
+        event.setStartAt(req.startAt());
+        event.setCreatedAt(LocalDateTime.now());
+        eventRepo.save(event);
+
+        LOGGER.info("Location {} hat Event {} angelegt", locationId, event.getEventId());
+        return ResponseEntity.status(201).body(toDetail(event, locOpt.get().getName(), myId));
+    }
+
+    @PutMapping("/locations/{locationId}/events/{eventId}")
+    public ResponseEntity<EventDetailDto> updateEvent(
+            @PathVariable UUID locationId,
+            @PathVariable UUID eventId,
+            @RequestBody UpdateEventRequest req,
+            Principal principal) {
+
+        UUID myId = userService.requireUser(principal).getUserId();
+        var locOpt = locationRepo.findById(locationId);
+        if (locOpt.isEmpty()) return ResponseEntity.notFound().build();
+        if (!locOpt.get().getOwnerId().equals(myId)) return ResponseEntity.status(403).build();
+
+        var evtOpt = eventRepo.findById(eventId);
+        if (evtOpt.isEmpty()) return ResponseEntity.notFound().build();
+        if (!evtOpt.get().getLocationId().equals(locationId)) return ResponseEntity.status(400).build();
+
+        LocationEventEntity event = evtOpt.get();
+        if (req.title() != null && !req.title().isBlank()) event.setTitle(req.title().trim());
+        if (req.description() != null) event.setDescription(req.description().trim());
+        if (req.imageData() != null) event.setImageData(req.imageData());
+        if (req.startAt() != null) event.setStartAt(req.startAt());
+        eventRepo.save(event);
+
+        return ResponseEntity.ok(toDetail(event, locOpt.get().getName(), myId));
+    }
+
+    @Transactional
+    @DeleteMapping("/locations/{locationId}/events/{eventId}")
+    public ResponseEntity<Void> deleteEvent(
+            @PathVariable UUID locationId,
+            @PathVariable UUID eventId,
+            Principal principal) {
+
+        UUID myId = userService.requireUser(principal).getUserId();
+        var locOpt = locationRepo.findById(locationId);
+        if (locOpt.isEmpty()) return ResponseEntity.notFound().build();
+        if (!locOpt.get().getOwnerId().equals(myId)) return ResponseEntity.status(403).build();
+
+        var evtOpt = eventRepo.findById(eventId);
+        if (evtOpt.isEmpty()) return ResponseEntity.notFound().build();
+        if (!evtOpt.get().getLocationId().equals(locationId)) return ResponseEntity.status(400).build();
+
+        attendeeRepo.deleteByEventId(eventId);
+        eventRepo.delete(evtOpt.get());
+        return ResponseEntity.noContent().build();
+    }
+
+    // ── Event-Detail und Teilnahme ────────────────────────────────────────────
+
+    @GetMapping("/location-events/{eventId}")
+    public ResponseEntity<EventDetailDto> getEvent(
+            @PathVariable UUID eventId,
+            Principal principal) {
+
+        UUID myId = userService.requireUser(principal).getUserId();
+        var evtOpt = eventRepo.findById(eventId);
+        if (evtOpt.isEmpty()) return ResponseEntity.notFound().build();
+
+        String locationName = locationRepo.findById(evtOpt.get().getLocationId())
+                .map(l -> l.getName()).orElse("");
+        return ResponseEntity.ok(toDetail(evtOpt.get(), locationName, myId));
+    }
+
+    @PostMapping("/location-events/{eventId}/attend")
+    public ResponseEntity<Map<String, Object>> toggleAttend(
+            @PathVariable UUID eventId,
+            Principal principal) {
+
+        UUID myId = userService.requireUser(principal).getUserId();
+        if (!eventRepo.existsById(eventId)) return ResponseEntity.notFound().build();
+
+        var existing = attendeeRepo.findByEventIdAndUserId(eventId, myId);
+        boolean attending;
+        if (existing.isPresent()) {
+            attendeeRepo.delete(existing.get());
+            attending = false;
+        } else {
+            LocationEventAttendeeEntity a = new LocationEventAttendeeEntity();
+            a.setAttendeeId(UUID.randomUUID());
+            a.setEventId(eventId);
+            a.setUserId(myId);
+            a.setRegisteredAt(LocalDateTime.now());
+            attendeeRepo.save(a);
+            attending = true;
+        }
+        long count = attendeeRepo.countByEventId(eventId);
+        return ResponseEntity.ok(Map.of("attending", attending, "attendeeCount", count));
+    }
+
+    // ── Event-Suche (IDs + Batch) ─────────────────────────────────────────────
+
+    /**
+     * Liefert Event-IDs sortiert nach Datum (nächste zuerst).
+     * Immer enthalten: Events von abonnierten Locations.
+     * Optional: Events im Umkreis von lat/lon (wenn angegeben).
+     */
+    @GetMapping("/location-events/ids")
+    public ResponseEntity<IdsResult> searchIds(
+            @RequestParam(required = false) Double lat,
+            @RequestParam(required = false) Double lon,
+            @RequestParam(defaultValue = "50") int maxDistanceKm,
+            @RequestParam(required = false) String from,
+            @RequestParam(required = false) String to,
+            Principal principal) {
+
+        UUID myId = userService.requireUser(principal).getUserId();
+
+        LocalDateTime fromDt = from != null ? LocalDateTime.parse(from) : LocalDateTime.now();
+        LocalDateTime toDt   = to   != null ? LocalDateTime.parse(to)   : fromDt.plusMonths(3);
+
+        // Abonnierte Locations – deren Events werden immer eingeschlossen
+        Set<UUID> followedLocationIds = followRepo.findByUserId(myId).stream()
+                .map(LocationFollowEntity::getLocationId)
+                .collect(Collectors.toSet());
+
+        Map<UUID, double[]> locationCoords = new HashMap<>();
+        List<UUID> sorted = eventRepo.findInTimeRange(fromDt, toDt).stream()
+                .filter(e -> {
+                    // Immer einschließen wenn Location abonniert
+                    if (followedLocationIds.contains(e.getLocationId())) return true;
+                    // Ohne Koordinaten kein Umkreis-Filter
+                    if (lat == null || lon == null) return false;
+                    double[] coords = locationCoords.computeIfAbsent(e.getLocationId(), locId ->
+                            locationRepo.findById(locId)
+                                    .filter(l -> l.getLat() != null && l.getLon() != null)
+                                    .map(l -> new double[]{l.getLat(), l.getLon()})
+                                    .orElse(null));
+                    if (coords == null) return false;
+                    return LocationController.haversineKm(lat, lon, coords[0], coords[1]) <= maxDistanceKm;
+                })
+                .sorted(Comparator.comparing(LocationEventEntity::getStartAt))
+                .map(LocationEventEntity::getEventId)
+                .collect(Collectors.toList());
+
+        return ResponseEntity.ok(new IdsResult(sorted, sorted.size()));
+    }
+
+    /**
+     * Batch-Laden von Event-Previews.
+     */
+    @PostMapping("/location-events/batch")
+    public ResponseEntity<List<EventPreviewDto>> getBatch(
+            @RequestBody BatchRequest request,
+            Principal principal) {
+
+        UUID myId = userService.requireUser(principal).getUserId();
+        if (request.ids() == null || request.ids().isEmpty()) return ResponseEntity.ok(List.of());
+
+        List<UUID> ids = request.ids().stream().filter(Objects::nonNull).limit(MAX_BATCH_SIZE).toList();
+        Map<UUID, LocationEventEntity> byId = eventRepo.findAllById(ids).stream()
+                .collect(Collectors.toMap(LocationEventEntity::getEventId, Function.identity()));
+
+        double refLat = request.lat() != null ? request.lat() : 0;
+        double refLon = request.lon() != null ? request.lon() : 0;
+
+        // Locations für Namens-Lookup und Distanzberechnung
+        Set<UUID> locationIds = byId.values().stream()
+                .map(LocationEventEntity::getLocationId).collect(Collectors.toSet());
+        Map<UUID, de.oaa.xxx.location.entity.LocationEntity> locationById =
+                locationRepo.findAllById(locationIds).stream()
+                        .collect(Collectors.toMap(
+                                de.oaa.xxx.location.entity.LocationEntity::getLocationId, Function.identity()));
+
+        List<EventPreviewDto> result = ids.stream()
+                .map(byId::get)
+                .filter(Objects::nonNull)
+                .map(e -> {
+                    var loc = locationById.get(e.getLocationId());
+                    String locName = loc != null ? loc.getName() : "";
+                    double dist = (loc != null && loc.getLat() != null && loc.getLon() != null)
+                            ? Math.round(LocationController.haversineKm(refLat, refLon, loc.getLat(), loc.getLon()) * 10.0) / 10.0
+                            : -1;
+                    return toPreview(e, locName, refLat, refLon, myId);
+                })
+                .toList();
+
+        return ResponseEntity.ok(result);
+    }
+
+    // ── Helpers ───────────────────────────────────────────────────────────────
+
+    private EventPreviewDto toPreview(LocationEventEntity e, String locationName,
+                                      double refLat, double refLon, UUID myId) {
+        var loc = locationRepo.findById(e.getLocationId()).orElse(null);
+        double dist = (loc != null && loc.getLat() != null && loc.getLon() != null)
+                ? Math.round(LocationController.haversineKm(refLat, refLon, loc.getLat(), loc.getLon()) * 10.0) / 10.0
+                : -1;
+        long count   = attendeeRepo.countByEventId(e.getEventId());
+        boolean mine = attendeeRepo.findByEventIdAndUserId(e.getEventId(), myId).isPresent();
+        return new EventPreviewDto(e.getEventId(), e.getLocationId(), locationName,
+                e.getTitle(), e.getImageData(), e.getStartAt(), dist, count, mine);
+    }
+
+    private EventDetailDto toDetail(LocationEventEntity e, String locationName, UUID myId) {
+        List<LocationEventAttendeeEntity> attendeeEntities =
+                attendeeRepo.findByEventIdOrderByRegisteredAtAsc(e.getEventId());
+
+        Set<UUID> attendeeUserIds = attendeeEntities.stream()
+                .map(LocationEventAttendeeEntity::getUserId).collect(Collectors.toSet());
+        Map<UUID, UserEntity> userById = attendeeUserIds.isEmpty()
+                ? Map.of()
+                : userRepo.findAllById(attendeeUserIds).stream()
+                        .collect(Collectors.toMap(UserEntity::getUserId, Function.identity()));
+
+        // Sortierung: Alphabetisch nach Geschlecht-Name, dann nach Registrierungszeit
+        List<AttendeeDto> attendees = attendeeEntities.stream()
+                .map(a -> {
+                    UserEntity u = userById.get(a.getUserId());
+                    if (u == null) return null;
+                    String geschlecht = u.getGeschlecht() != null ? u.getGeschlecht().name() : "UNBEKANNT";
+                    return new AttendeeDto(u.getUserId(), u.getName(), u.getProfilePicture(), geschlecht);
+                })
+                .filter(Objects::nonNull)
+                .sorted(Comparator
+                        .comparing((AttendeeDto a) -> {
+                            // Sortierreihenfolge: WEIBLICH → MAENNLICH → DIVERS → rest
+                            return switch (a.geschlecht()) {
+                                case "WEIBLICH"  -> 0;
+                                case "MAENNLICH" -> 1;
+                                case "DIVERS"    -> 2;
+                                default          -> 3;
+                            };
+                        })
+                        .thenComparing(AttendeeDto::name))
+                .toList();
+
+        boolean attendingMe = attendeeRepo.findByEventIdAndUserId(e.getEventId(), myId).isPresent();
+
+        return new EventDetailDto(
+                e.getEventId(), e.getLocationId(), locationName,
+                e.getTitle(), e.getDescription(), e.getImageData(),
+                e.getStartAt(), e.getCreatedAt(),
+                attendingMe, attendees);
+    }
+}
--- a/src/main/java/de/oaa/xxx/location/entity/LocationEntity.java
+++ b/src/main/java/de/oaa/xxx/location/entity/LocationEntity.java
@@ -0,0 +1,55 @@
+package de.oaa.xxx.location.entity;
+
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.Setter;
+
+import java.time.LocalDateTime;
+import java.util.UUID;
+
+@Getter
+@Setter
+@Entity
+@Table(name = "location")
+public class LocationEntity {
+
+    @Id
+    @Column
+    private UUID locationId;
+
+    @Column(nullable = false)
+    private UUID ownerId;
+
+    @Column(nullable = false, length = 200)
+    private String name;
+
+    @Column(columnDefinition = "TEXT")
+    private String description;
+
+    /** LQ-Profilbild (klein, für Listenansicht) – base64 */
+    @Column(columnDefinition = "TEXT")
+    private String profilePictureLq;
+
+    /** HQ-Profilbild (max 1024×1024) – base64 */
+    @Column(columnDefinition = "MEDIUMTEXT")
+    private String profilePictureHq;
+
+    @Column
+    private Double lat;
+
+    @Column
+    private Double lon;
+
+    @Column(length = 200)
+    private String street;
+
+    @Column(length = 200)
+    private String city;
+
+    /** Eigentümerschaft wurde vom Anleger bestätigt */
+    @Column(nullable = false, columnDefinition = "TINYINT(1) DEFAULT 0")
+    private boolean ownershipConfirmed = false;
+
+    @Column(nullable = false)
+    private LocalDateTime createdAt;
+}
--- a/src/main/java/de/oaa/xxx/location/entity/LocationEventAttendeeEntity.java
+++ b/src/main/java/de/oaa/xxx/location/entity/LocationEventAttendeeEntity.java
@@ -0,0 +1,29 @@
+package de.oaa.xxx.location.entity;
+
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.Setter;
+
+import java.time.LocalDateTime;
+import java.util.UUID;
+
+@Getter
+@Setter
+@Entity
+@Table(name = "location_event_attendee",
+        uniqueConstraints = @UniqueConstraint(columnNames = {"event_id", "user_id"}))
+public class LocationEventAttendeeEntity {
+
+    @Id
+    @Column
+    private UUID attendeeId;
+
+    @Column(nullable = false, name = "event_id")
+    private UUID eventId;
+
+    @Column(nullable = false, name = "user_id")
+    private UUID userId;
+
+    @Column(nullable = false)
+    private LocalDateTime registeredAt;
+}
--- a/src/main/java/de/oaa/xxx/location/entity/LocationEventEntity.java
+++ b/src/main/java/de/oaa/xxx/location/entity/LocationEventEntity.java
@@ -0,0 +1,38 @@
+package de.oaa.xxx.location.entity;
+
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.Setter;
+
+import java.time.LocalDateTime;
+import java.util.UUID;
+
+@Getter
+@Setter
+@Entity
+@Table(name = "location_event")
+public class LocationEventEntity {
+
+    @Id
+    @Column
+    private UUID eventId;
+
+    @Column(nullable = false)
+    private UUID locationId;
+
+    @Column(nullable = false, length = 200)
+    private String title;
+
+    @Column(columnDefinition = "TEXT")
+    private String description;
+
+    /** base64-Profilbild der Veranstaltung, max 1024px */
+    @Column(columnDefinition = "MEDIUMTEXT")
+    private String imageData;
+
+    @Column(nullable = false)
+    private LocalDateTime startAt;
+
+    @Column(nullable = false)
+    private LocalDateTime createdAt;
+}
--- a/src/main/java/de/oaa/xxx/location/entity/LocationFollowEntity.java
+++ b/src/main/java/de/oaa/xxx/location/entity/LocationFollowEntity.java
@@ -0,0 +1,31 @@
+package de.oaa.xxx.location.entity;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+import lombok.Getter;
+import lombok.Setter;
+
+import java.time.LocalDateTime;
+import java.util.UUID;
+
+@Getter
+@Setter
+@Entity
+@Table(name = "location_follow")
+public class LocationFollowEntity {
+
+    @Id
+    @Column
+    private UUID followId;
+
+    @Column(nullable = false)
+    private UUID locationId;
+
+    @Column(nullable = false)
+    private UUID userId;
+
+    @Column(nullable = false)
+    private LocalDateTime followedAt;
+}
--- a/src/main/java/de/oaa/xxx/location/entity/LocationImageEntity.java
+++ b/src/main/java/de/oaa/xxx/location/entity/LocationImageEntity.java
@@ -0,0 +1,29 @@
+package de.oaa.xxx.location.entity;
+
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.Setter;
+
+import java.time.LocalDateTime;
+import java.util.UUID;
+
+@Getter
+@Setter
+@Entity
+@Table(name = "location_image")
+public class LocationImageEntity {
+
+    @Id
+    @Column
+    private UUID imageId;
+
+    @Column(nullable = false)
+    private UUID locationId;
+
+    /** base64-kodiertes Bild, max 1024px */
+    @Column(nullable = false, columnDefinition = "MEDIUMTEXT")
+    private String imageData;
+
+    @Column(nullable = false)
+    private LocalDateTime uploadedAt;
+}
--- a/src/main/java/de/oaa/xxx/location/entity/LocationOpeningHoursEntity.java
+++ b/src/main/java/de/oaa/xxx/location/entity/LocationOpeningHoursEntity.java
@@ -0,0 +1,40 @@
+package de.oaa.xxx.location.entity;
+
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.Setter;
+
+import java.util.UUID;
+
+@Getter
+@Setter
+@Entity
+@Table(name = "location_opening_hours",
+        uniqueConstraints = @UniqueConstraint(columnNames = {"location_id", "day_of_week"}))
+public class LocationOpeningHoursEntity {
+
+    @Id
+    @Column
+    private UUID hoursId;
+
+    @Column(nullable = false, name = "location_id")
+    private UUID locationId;
+
+    /**
+     * Wochentag: 1 = Montag, 2 = Dienstag, ..., 7 = Sonntag
+     */
+    @Column(nullable = false, name = "day_of_week")
+    private int dayOfWeek;
+
+    /** Öffnungszeit als "HH:mm"-String, null = kein Eintrag */
+    @Column(length = 5)
+    private String openTime;
+
+    /** Schließzeit als "HH:mm"-String, null = kein Eintrag */
+    @Column(length = 5)
+    private String closeTime;
+
+    /** true = an diesem Tag geschlossen */
+    @Column(nullable = false, columnDefinition = "TINYINT(1) DEFAULT 0")
+    private boolean closed = false;
+}
--- a/src/main/java/de/oaa/xxx/location/repository/LocationEventAttendeeRepository.java
+++ b/src/main/java/de/oaa/xxx/location/repository/LocationEventAttendeeRepository.java
@@ -0,0 +1,21 @@
+package de.oaa.xxx.location.repository;
+
+import de.oaa.xxx.location.entity.LocationEventAttendeeEntity;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+import java.util.Optional;
+import java.util.UUID;
+
+public interface LocationEventAttendeeRepository extends JpaRepository<LocationEventAttendeeEntity, UUID> {
+
+    List<LocationEventAttendeeEntity> findByEventIdOrderByRegisteredAtAsc(UUID eventId);
+
+    Optional<LocationEventAttendeeEntity> findByEventIdAndUserId(UUID eventId, UUID userId);
+
+    long countByEventId(UUID eventId);
+
+    void deleteByEventId(UUID eventId);
+
+    void deleteByUserId(UUID userId);
+}
--- a/src/main/java/de/oaa/xxx/location/repository/LocationEventRepository.java
+++ b/src/main/java/de/oaa/xxx/location/repository/LocationEventRepository.java
@@ -0,0 +1,24 @@
+package de.oaa.xxx.location.repository;
+
+import de.oaa.xxx.location.entity.LocationEventEntity;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+
+import java.time.LocalDateTime;
+import java.util.List;
+import java.util.UUID;
+
+public interface LocationEventRepository extends JpaRepository<LocationEventEntity, UUID> {
+
+    List<LocationEventEntity> findByLocationIdOrderByStartAtAsc(UUID locationId);
+
+    /** Alle zukünftigen Events mit Koordinaten ihrer Location (für Umkreis-Suche) */
+    @Query("""
+            SELECT e FROM LocationEventEntity e
+             WHERE e.startAt >= :from
+               AND e.startAt <= :to
+            """)
+    List<LocationEventEntity> findInTimeRange(LocalDateTime from, LocalDateTime to);
+
+    void deleteByLocationId(UUID locationId);
+}
--- a/src/main/java/de/oaa/xxx/location/repository/LocationFollowRepository.java
+++ b/src/main/java/de/oaa/xxx/location/repository/LocationFollowRepository.java
@@ -0,0 +1,14 @@
+package de.oaa.xxx.location.repository;
+
+import de.oaa.xxx.location.entity.LocationFollowEntity;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+import java.util.Optional;
+import java.util.UUID;
+
+public interface LocationFollowRepository extends JpaRepository<LocationFollowEntity, UUID> {
+    Optional<LocationFollowEntity> findByUserIdAndLocationId(UUID userId, UUID locationId);
+    List<LocationFollowEntity> findByUserId(UUID userId);
+    void deleteByLocationId(UUID locationId);
+}
--- a/src/main/java/de/oaa/xxx/location/repository/LocationImageRepository.java
+++ b/src/main/java/de/oaa/xxx/location/repository/LocationImageRepository.java
@@ -0,0 +1,16 @@
+package de.oaa.xxx.location.repository;
+
+import de.oaa.xxx.location.entity.LocationImageEntity;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+import java.util.UUID;
+
+public interface LocationImageRepository extends JpaRepository<LocationImageEntity, UUID> {
+
+    List<LocationImageEntity> findByLocationIdOrderByUploadedAtAsc(UUID locationId);
+
+    long countByLocationId(UUID locationId);
+
+    void deleteByLocationId(UUID locationId);
+}
--- a/src/main/java/de/oaa/xxx/location/repository/LocationOpeningHoursRepository.java
+++ b/src/main/java/de/oaa/xxx/location/repository/LocationOpeningHoursRepository.java
@@ -0,0 +1,14 @@
+package de.oaa.xxx.location.repository;
+
+import de.oaa.xxx.location.entity.LocationOpeningHoursEntity;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+import java.util.UUID;
+
+public interface LocationOpeningHoursRepository extends JpaRepository<LocationOpeningHoursEntity, UUID> {
+
+    List<LocationOpeningHoursEntity> findByLocationIdOrderByDayOfWeek(UUID locationId);
+
+    void deleteByLocationId(UUID locationId);
+}
--- a/src/main/java/de/oaa/xxx/location/repository/LocationRepository.java
+++ b/src/main/java/de/oaa/xxx/location/repository/LocationRepository.java
@@ -0,0 +1,15 @@
+package de.oaa.xxx.location.repository;
+
+import de.oaa.xxx.location.entity.LocationEntity;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+import java.util.UUID;
+
+public interface LocationRepository extends JpaRepository<LocationEntity, UUID> {
+
+    List<LocationEntity> findByOwnerIdOrderByCreatedAtDesc(UUID ownerId);
+
+    /** Alle Locations mit gesetzten Koordinaten (für Umkreissuche) */
+    List<LocationEntity> findByLatIsNotNullAndLonIsNotNull();
+}