from flask import Flask, request, jsonify, send_file
from moviepy.editor import ColorClip,ImageClip, concatenate_videoclips,VideoFileClip
import traceback
import uuid
from concurrent.futures import ThreadPoolExecutor, as_completed
import glob
import os
import requests
import asyncio
from image_fetcher import main
from video import create_text_image
from video2 import video_func
import re

app = Flask(__name__)

SAVE_DIR = "/app/data/video/"
os.makedirs(SAVE_DIR, exist_ok=True)
CLIPS_DIR= "/app/data/video/"
os.makedirs(SAVE_DIR, exist_ok=True)



def extract_english_paragraphs(text):
    """
    Extract paragraphs that contain only English text
    """
    paragraphs = text.split('\n\n')
    english_paragraphs = [paragraphs[0]]
    
    #for para in paragraphs:
        # Check if the paragraph contains only English characters
        #if not re.search(r'[^\x00-\x7F]', para):
            #english_paragraphs.append(para.strip())
    
    return '\n\n'.join(english_paragraphs)

def extract_native_text(text):
    paragraphs = text.split('\n\n')
    nativelang_paragraphs = paragraphs[1]
    #pattern = r'[^\x00-\x7F]'
    
    # Search for the first non-English character
    #match = re.search(pattern, text)
    
    #if match:
        # Return everything from the first non-English character
        #return text[match.start():]
    #else:
        # If no non-English characters found, return empty string
    return nativelang_paragraphs


@app.route("/")
def home():
    return "Flask Video Generator is Running"



@app.route("/generate", methods=["POST"])
def generate_video():
    try:
        data = request.get_json()
        userprompt = data.get("duration", '').strip()
        prompt=extract_english_paragraphs(userprompt)
        lang=extract_native_text(userprompt)
        prompts=prompt.replace("**","")
        print(prompts)
        if prompts == '':
            return jsonify({"error": "prompts be must"}), 400
        image_folder = "/tmp/images"
        #line=prompts.splitlines()
        #asyncio.run(main(line))
        raw_lines = prompts.splitlines(keepends=False)
        lines = []
        
        i = 0
        while i < len(raw_lines):
            line = raw_lines[i].strip()
        
            # Check if current line is a heading
            if line.strip().startswith("#") and (line.endswith('?') or line.endswith(':')):
                block = line  # Start block with heading
                i += 1
        
                # Accumulate body lines until next heading or 5+ lines
                paragraph_lines = []
                while i < len(raw_lines):
                    next_line = raw_lines[i].strip()
        
                    # Stop if next line is a heading
                    if next_line.strip().startswith("#") and (next_line.endswith('?') or next_line.endswith(':')):
                        break
        
                    paragraph_lines.append(next_line)
                    i += 1
        
                    # If we've gathered enough lines for a slide, break to next
                    if len(paragraph_lines) >= 5:
                        break
        
                # Combine heading + paragraph
                if paragraph_lines:
                    block += '\n' + '\n'.join(paragraph_lines)
        
                lines.append(block)
        
            else:
                # Group normal lines (not part of any heading)
                block_lines = []
                count = 0
        
                while i < len(raw_lines) and count < 5:
                    next_line = raw_lines[i].strip()
        
                    # If this is a heading, break to handle it separately
                    if next_line.strip().startswith("#") and (next_line.endswith('?') or next_line.endswith(':')):
                        break
        
                    block_lines.append(next_line)
                    i += 1
                    count += 1
        
                if block_lines:
                    lines.append('\n'.join(block_lines))
        
        # Print or use lines as slides
        if len(lines)==1:
            try:
                os.remove("/app/data/video/clip0.mp4")
                os.remove("/app/data/sound/audio0.mp3")
            except Exception as e:
                print(e)
            #image_folder="/tmp/images"
            #image_olst=[]
            #create_text_image(lines[0],0,image_olst)
            #image_files = sorted(glob.glob(os.path.join(image_folder, "*.png")))
            #if not image_files:
                #raise ValueError("No images found in folder!")
            video_link = "/app/data/video/clip0.mp4"
            video_func(0,lines,lang)
            #for img in image_files:
                #os.remove(img)
            return send_file(video_link, mimetype='video/mp4')
            
        else:
            print("learn deeper")
    except Exception as e:
        traceback.print_exc()
        return jsonify({"error": str(e)}), 500


if __name__ == "__main__":
    app.run(host="0.0.0.0", port=7860)

    # Example call (remove or change in your actual app)