Comrad/app/screens/post/post.py

from screens.base import ProtectedScreen
from plyer import filechooser
from kivymd.uix.label import MDLabel
from kivymd.uix.textfield import MDTextField
from kivymd.uix.boxlayout import MDBoxLayout
from kivymd.uix.button import MDRectangleFlatButton, MDIconButton, MDRaisedButton
from kivy.properties import ListProperty,ObjectProperty
from kivy.app import App
from screens.feed.feed import *
import os,time,threading
from threading import Thread
from kivymd.uix.dialog import MDDialog
from kivy.core.image import Image as CoreImage
import io,shutil

class ProgressPopup(MDDialog): pass
class MessagePopup(MDDialog): pass

class UploadButton(MDRectangleFlatButton):
    '''
    Button that triggers 'filechooser.open_file()' and processes
    the data response from filechooser Activity.
    '''

    selection = ListProperty([])

    def choose(self):
        '''
        Call plyer filechooser API to run a filechooser Activity.
        '''
        filechooser.open_file(on_selection=self.handle_selection)

    def handle_selection(self, selection):
        '''
        Callback function for handling the selection response from Activity.
        '''
        self.selection = selection



    def on_selection(self, *a, **k):
        '''
        Update TextInput.text after FileChoose.selection is changed
        via FileChoose.handle_selection.
        '''
        pass
        #App.get_running_app().root.ids.result.text = str(self.selection)

class AddPostTextField(MDTextField): pass
class ButtonLayout(MDBoxLayout): pass
class PostButton(MDRectangleFlatButton): pass
class PostStatus(MDRectangleFlatButton): pass


class PostScreen(ProtectedScreen): 
    post_id = ObjectProperty()

    def on_pre_enter(self):
        # clear
        if hasattr(self,'post_status'): self.remove_widget(self.post_status)
        if hasattr(self,'post_textfield'): self.post_textfield.text=''

        post_json = {'author':self.app.username, 'timestamp':time.time()}
        self.post_card = post = PostCard(post_json)
        self.post_textfield = post_TextField = AddPostTextField()
        post_TextField.line_color_focus=(1,0,0,1)
        post_TextField.line_color_normal=(1,0,0,1)
        post_TextField.current_hint_text_color=(1,0,0,1)
        post_TextField.font_name='assets/overpass-mono-regular.otf'
        post_TextField.hint_text='word?'

        # post.remove_widget(post.scroller)
        post.scroller.remove_widget(post.post_content)
        post.scroller.add_widget(post_TextField)
        post.scroller.size=('300dp','300dp')
        self.add_widget(post)

        self.button_layout = ButtonLayout()
        self.upload_button = UploadButton()
        self.upload_button.screen = self
        self.post_button = PostButton()
        self.post_button.screen = self
        self.post_status = PostStatus()
        self.post_status_added = False

        self.button_layout.add_widget(self.upload_button)
        self.button_layout.add_widget(self.post_button)
       

        self.post_button.md_bg_color=(0,0,0,1)
        self.upload_button.md_bg_color=(0,0,0,1)
        self.post_status.md_bg_color=(0,0,0,1)
        
        self.add_widget(self.button_layout)
        # self.add_widget(self.post_status)

    

    def write_post_status(self,x):
        self.post_status.text=str(x)
        if not self.post_status_added:
            self.add_widget(self.post_status)
            self.post_status_added=True

    def open_dialog(self,msg):
        if not hasattr(self,'dialog') or not self.dialog:
            self.dialog = ProgressPopup()
        self.dialog.ids.progress_label.text=msg
        self.dialog.open()

    def open_msg_dialog(self,msg):
        if not hasattr(self,'msg_dialog') or not self.msg_dialog:
            self.msg_dialog = MessagePopup()
        self.msg_dialog.ids.msg_label.text=msg
        self.msg_dialog.open()

    def close_dialog(self):
        if hasattr(self,'dialog'):
            self.dialog.dismiss()

    def close_msg_dialog(self):
        if hasattr(self,'msg_dialog'):
            self.msg_dialog.dismiss()


    def choose(self):
        # time.sleep(5)
        
        self.upload_button.choose()
        self.orig_img_src = self.upload_button.selection
        # self.open_dialog('uploading')
        # self.upload()
        # self.close_dialog()
        #mythread = threading.Thread(target=self.upload)
        #mythread.start()
        self.upload()

    def upload(self):
        # get file id
        filename=self.orig_img_src[0] if self.orig_img_src and os.path.exists(self.orig_img_src[0]) else ''
        if not filename: return
        self.img_id = file_id = get_random_id()
        self.img_ext = os.path.splitext(filename)[-1][1:]

        # cache
        tmp_img_fn = 'cache/'+self.img_id[:3]+'/'+self.img_id[3:]+'.'+self.img_ext
        tmp_img_dir = os.path.dirname(tmp_img_fn)
        if not os.path.exists(tmp_img_dir): os.makedirs(tmp_img_dir)
        shutil.copyfile(filename, tmp_img_fn)

        # add
        self.add_image(tmp_img_fn)
        
        # upload
        #def do_upload():
            
        self.app.upload(tmp_img_fn, file_id=file_id)

        # Thread(target=do_upload).start()
        
        # self.close_dialog()

    def add_image(self,filename):
        if hasattr(self,'image_layout'):
            self.post_card.remove_widget(self.image_layout)
        
        self.image_layout = image_layout = PostImageLayout()
        self.image = image = PostImage(source=filename)
        # self.image.texture = img.texture
        self.image.height = '300dp'
        self.image_layout.add_widget(self.image)
        self.image_layout.height='300dp'
        self.post_card.add_widget(self.image_layout,index=1)

        

    def post(self):
        # check?
        maxlen = 500
        content = self.post_textfield.text
        lencontent = content.strip().replace('  ',' ').count(' ')
        # maxlen = int(self.post_textfield.max_text_length)
        lendiff = lencontent - maxlen
        if lendiff>0:
            self.open_msg_dialog(f'Text is currently {lencontent} words long, which is {lendiff} over the maximum text length of {maxlen} words.\n\n({lencontent}/{maxlen})')
            return

        # log('?????????????????'+self.media_uid)
        # if not hasattr(self,'img_id') and self.upload_button.selection:
        #     log('REUPLOADING')
        #     self.upload()

        def do_post():
            file_id = self.img_id if hasattr(self,'img_id') else None
            file_ext = self.img_ext if hasattr(self,'img_ext') else None
            self.app.post(content=content, file_id=file_id, file_ext=file_ext)
            import time
            self.close_dialog()
        
        self.open_dialog('posting')
        #Thread(target=do_post).start()
        do_post()
        

# class ViewPostScreen(ProtectedScreen): 
#     post_id = ObjectProperty()

#     def on_pre_enter(self):
#         for child in self.children:
#             log('child: '+str(child))
#             self.remove_widget(child)
        
#         post_json = self.app.get_post(self.root.post_id)
#         post = PostCard(post_json)
#         self.add_widget(post)

#     def on_enter(self):
#         for child in self.children: child.load_image()
        
    
#     pass
 


def get_random_id():
    import uuid
    return uuid.uuid4().hex