import string
import time
import random
from pathlib import Path

import yaml
from PIL import ImageGrab
import pyperclip
import rumps
from pix2text import Pix2Text

SUCCESS_NT_FORM = {
    'title': 'Success!',
    'subtitle': 'Success! Copied to clipboard.',
    'message': '',
}

ERROR_NT_FORM = {
    'title': 'Fail!',
    'subtitle': 'Error! You didn\'t copy the screenshot.',
    'message': '',
}

CONFIG = yaml.safe_load(open('./config.yaml', 'r', encoding='utf-8'))
OUTPUT_MD_ROOT_DIR = Path(CONFIG['output_md_root_dir'])
OUTPUT_MD_ROOT_DIR.mkdir(exist_ok=True)
OUTPUT_DEBUG_DIR = Path(CONFIG['output_debug_dir'])
OUTPUT_DEBUG_DIR.mkdir(exist_ok=True)
TEXT_FORMULA_RESIZED_SHAPE = CONFIG['text_formula_resized_shape']
PAGE_RESIZED_SHAPE = CONFIG['page_resized_shape']


class Pix2TextApplication(rumps.App):
    def __init__(self, name):
        super(Pix2TextApplication, self).__init__(
            name=name, icon='./icons/p2t-logo.png', quit_button="Quit"
        )
        self.p2t = Pix2Text.from_config(**CONFIG['pix2text'])

    @rumps.clicked("Text_Formula OCR")
    def recognize_mixed(self, _):
        # Identify mixed image
        image = ImageGrab.grabclipboard()
        try:
            only_text = self.p2t.recognize_text_formula(
                image, resized_shape=TEXT_FORMULA_RESIZED_SHAPE, return_text=True
            )  # 也可以使用 `p2t(img_fp, resized_shape=608)` 获得相同的结果
            SUCCESS_NT_FORM['message'] = only_text
            pyperclip.copy(only_text)
            rumps.notification(**SUCCESS_NT_FORM)
        except Exception as e:
            ERROR_NT_FORM['message'] += str(e)
            rumps.notification(**ERROR_NT_FORM)

    @rumps.clicked("Formula OCR")
    def recognize_formula(self, _):
        # Only recognize formula
        image = ImageGrab.grabclipboard()
        try:
            formula_str = self.p2t.recognize_formula(image)
            pyperclip.copy(f'$$\n{formula_str}\n$$')
            SUCCESS_NT_FORM['message'] = formula_str
            rumps.notification(**SUCCESS_NT_FORM)
        except Exception as e:
            ERROR_NT_FORM['message'] += str(e)
            rumps.notification(**ERROR_NT_FORM)

    @rumps.clicked("Text OCR")
    def recognize_text(self, _):
        # Only recognize formula
        image = ImageGrab.grabclipboard()
        try:
            text_str = self.p2t.recognize_text(image)
            pyperclip.copy(text_str)
            SUCCESS_NT_FORM['message'] = text_str
            rumps.notification(**SUCCESS_NT_FORM)
        except Exception as e:
            ERROR_NT_FORM['message'] += str(e)
            rumps.notification(**ERROR_NT_FORM)

    @rumps.clicked("Page OCR")
    def recognize_page(self, _):
        # Identify page image
        image = ImageGrab.grabclipboard()
        suffix = list(string.ascii_letters)
        random.shuffle(suffix)
        suffix = ''.join(suffix[:6])
        fp_suffix = f'{time.time()}-{suffix}'
        out_debug_dir = OUTPUT_DEBUG_DIR / f'out-debug-{fp_suffix}'
        output_dir = OUTPUT_MD_ROOT_DIR / f'output-{fp_suffix}'
        try:
            page = self.p2t.recognize_page(
                image, resized_shape=PAGE_RESIZED_SHAPE, save_debug_res=out_debug_dir
            )
            only_text = page.to_markdown(output_dir)
            SUCCESS_NT_FORM['message'] = (
                f'saved to {output_dir.absolute()}!\n' + only_text
            )
            pyperclip.copy(only_text)
            rumps.notification(**SUCCESS_NT_FORM)
        except Exception as e:
            ERROR_NT_FORM['message'] += str(e)
            rumps.notification(**ERROR_NT_FORM)

    @rumps.notifications
    def notification_center(self, info):
        pass

    @rumps.clicked("On / Off")
    def onoff(self, _):
        mixed_ocr_button = self.menu['Text_Formula OCR']
        if mixed_ocr_button.callback is None:
            mixed_ocr_button.set_callback(self.recognize_mixed)
        else:
            mixed_ocr_button.set_callback(None)
        formula_ocr_button = self.menu['Formula OCR']
        if formula_ocr_button.callback is None:
            formula_ocr_button.set_callback(self.recognize_formula)
        else:
            formula_ocr_button.set_callback(None)
        formula_ocr_button = self.menu['Text OCR']
        if formula_ocr_button.callback is None:
            formula_ocr_button.set_callback(self.recognize_text)
        else:
            formula_ocr_button.set_callback(None)
        page_ocr_button = self.menu['Page OCR']
        if page_ocr_button.callback is None:
            page_ocr_button.set_callback(self.recognize_page)
        else:
            page_ocr_button.set_callback(None)


if __name__ == "__main__":
    Pix2TextApplication(name='').run()