import os

from funcy import rcompose, juxt

from image_prediction.classifier.classifier import Classifier
from image_prediction.classifier.image_classifier import ImageClassifier
from image_prediction.estimator.adapter.adapter import EstimatorAdapter
from image_prediction.extractor_classifier.extractor_classifier import ExtractorClassifier
from image_prediction.formatter.formatters.enum import EnumFormatter
from image_prediction.image_extractor.extractors.parsable import ParsablePDFImageExtractor
from image_prediction.label_mapper.mappers.probability import ProbabilityMapper

os.environ["TF_CPP_MIN_LOG_LEVEL"] = "3"


def get_image_classifier(model_loader, model_identifier):
    model, classes = juxt(model_loader.load_model, model_loader.load_classes)(model_identifier)
    return ImageClassifier(Classifier(EstimatorAdapter(model), ProbabilityMapper(classes)))


def get_extractor():
    image_extractor = ParsablePDFImageExtractor(verbose=True)

    return image_extractor


def get_extractor_classifier(model_loader, model_identifier):
    extractor_classifier = ExtractorClassifier(get_extractor(), get_image_classifier(model_loader, model_identifier))

    return extractor_classifier


def get_formatter():
    formatter = EnumFormatter()

    return formatter


class Pipeline:
    def __init__(self, model_loader, model_identifier):
        self.pipe = rcompose(get_extractor_classifier(model_loader, model_identifier), get_formatter())

    def __call__(self, pdf: bytes):
        yield from self.pipe(pdf)