Backend for simple web-service to write text on image

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Frontend for this project is here - https://github.com/samaranin/add-text-on-image-frontend

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Requirements:

flask   
uwsgi   
nider   
flask-cors   

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Clone the repository and create next folders

/repository   
--/fonts   
--/temp   
--/sources   
----/backgrounds   
----/labels   
...   
all other code here   

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Resources description:

/fonts - folder for fonts
/temp - folder for processed images
/sources - folder for source images
--/backgrounds - images to place text on
--/labels - images to be attached to backgrounds (to left or right side)

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API Endpoints:

1. /api/fonts/ - list of font files
2. /api/backgrounds/ - list of images to place text on
3. /api/labels/ - list of images to be attached to background
4. /sources/backgrounds/image.name - endpoint to show background image
5. /sources/labels/image.name - endpoint to show label image
6. /temp/image.name - endpoint to show ready image
7. /api/join_images/ - endpoint to join two images (both must be on server, label must be in sources/labels/)
    a. GET method - returns JSON-error with text and example JSON-scheme
    b. POST method - gets JSON

{
   "text_image": "image_with_text", 
   "label_image": "label_image", 
   "join": "left" or "right"
}   

and returns path to generated image

{"data": "temp/image.name"}

8. /api/write_text/ - endpoint to write text on images (image must be on server)
    a. GET method - returns JSON-error with text and example JSON-scheme
    b. POST method - gets JSON

{
   "background_image": "image_to_write_text", // <- must be on server in sources/backgrounds   
   "header": "header",    
   "footer": "footer",   
   "width": "width",    
   "height": "height",    
   "header_font_name": "header_font_name",    // <- must be on server in fonts/
   "text_width_header": "text_width_header",  
   "font_size_header": "font_size_header",    
   "footer_font_name": "footer_font_name",   // <- must be on server in fonts/
   "text_width_footer": "text_width_footer",   
   "font_size_footer": "font_size_footer",   
   "top_padding": "top_padding",   
   "bottom_padding": "bottom_padding"   
}   

and returns path to generated image

{"data": "temp/image.name"}

9. /api/get_image_size/ - endpoint to get image width and height (must be in sources/labels/ or sources/backgrounds/)
    a. GET method - returns JSON-error with text and example JSON-scheme
    b. POST method - gets JSON

{
   "image_type": "background or label", 
   "image_name": "name of image"
}   

and returns path to generated image

{"widht": "image width", "height": "image height"}

10. /api/remove_temp_files/ - endpoint clear files in temp/ dir

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Run server

To run the app use command

docker-compose up -d

and go to the localhost:5000