# image_import_worker.py
import time
import os
from app import create_app
from app.utils.image_importer import import_images_task

THUMBNAIL_FLAG = "/import/thumbnail.flag"
TRIGGER_FLAG = "/import/trigger.flag"
SOURCE_DIR = "/import"
DEST_DIR = "/images"
CHECK_INTERVAL = 10  # seconds

app = create_app()

def monitor_and_import():
    with app.app_context():
        print("[Image Importer] Monitoring for trigger flag...")

        while True:
            if os.path.exists(TRIGGER_FLAG):
                print("[Image Importer] Trigger flag found. Starting import...")
                try:
                    result = import_images_task(SOURCE_DIR, DEST_DIR)
                    print(f"[Image Importer] {result}")
                except Exception as e:
                    print(f"[Image Importer] Error during import: {e}")
                finally:
                    try:
                        os.remove(TRIGGER_FLAG)
                        print("[Image Importer] Trigger flag cleared.")
                    except Exception as e:
                        print(f"[Image Importer] Failed to remove trigger flag: {e}")

            # Thumbnail generation Check
            if os.path.exists(THUMBNAIL_FLAG):
                print("[Image Importer] Thumbnail regeneration triggered.")
                try:
                    from app.models import ImageRecord
                    from app.utils.image_importer import generate_thumbnail

                    for img in ImageRecord.query.all():
                        try:
                            generate_thumbnail(img.filepath, overwrite=True)
                            print(f"[Thumbnail] Regenerated for {img.filename}")
                        except Exception as e:
                            print(f"[Thumbnail] Failed for {img.filename}: {e}")
                        time.sleep(1)
                except Exception as e:
                    print(f"[Image Importer] Error during thumbnail regeneration: {e}")
                finally:
                    try:
                        os.remove(THUMBNAIL_FLAG)
                        print("[Image Importer] Thumbnail flag cleared.")
                    except Exception as e:
                        print(f"[Image Importer] Failed to remove thumbnail flag: {e}")


            time.sleep(CHECK_INTERVAL)

if __name__ == '__main__':
    monitor_and_import()