from picamera2 import Picamera2, Preview
import PIL.Image, PIL.ImageTk


class Camera():
    def __init__(self, still_image_processing):
        #Auflösung des Vorschaubildes
        self.preview_width = 1280
        self.preview_height = 800
        #Auflösung des finalen Bildes
        self.still_width = 4056
        self.still_height = 3040

        self.camera = Picamera2()
        #Low-Resolution-Config, für flüssigeres Vorschaubild
        self.lowres_preview_config = self.camera.create_preview_configuration(main={"size": (self.preview_width, self.preview_height)})
        #Einstellung für Vorschaubild in höherer AUflsung (für Zoom)
        self.highres_preview_config = self.camera.create_preview_configuration(main={"size": (2028, 1080)})
        #Einstellung für finales Bild, maximale Auflösung
        self.capture_config = self.camera.create_still_configuration(main={"size": (self.still_width, self.still_height)})


        self.preview_config = self.lowres_preview_config
        self.still_image_processing = still_image_processing
        self.set_highres_preview_config = False

    def start_camera(self):
        self.camera.configure(self.preview_config)
        self.camera.start()

    def get_preview_image(self):
        image = self.camera.capture_array()
        return image
    
    #Kameravorschau auf höhere Auflösung umstellen
    def get_highres_preview(self):
        self.camera.stop()
        if self.set_highres_preview_config == False:
            self.preview_config  = self.highres_preview_config
            self.set_highres_preview_config = True
        else:
            self.preview_config = self.lowres_preview_config
            self.set_highres_preview_config = False

        self.camera.configure(self.preview_config)
        self.camera.start()
    
    def get_still_image(self):
        image = self.camera.switch_mode_and_capture_array(self.capture_config)
        self.still_image_processing.process_image(image)
    
    def get_aspect_ratio(self):
        preview_ratio = self.preview_width / self.preview_height
        return preview_ratio