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import re
import base64
import json
from typing import Dict, List, Optional, Tuple, Union
from pathlib import Path

from utils import apply_search_replace_changes, validate_video_html
from media_generation import generate_image_with_qwen, generate_image_to_image, generate_video_from_image, generate_video_from_text, generate_music_from_text
from config import SEARCH_START, DIVIDER, REPLACE_END

class CodeProcessor:
    """Handles processing and transformation of various code formats"""
    
    @staticmethod
    def is_streamlit_code(code: str) -> bool:
        """Check if Python code is a Streamlit app"""
        if not code:
            return False
        lowered = code.lower()
        return ("import streamlit" in lowered) or ("from streamlit" in lowered) or ("st." in code and "streamlit" in lowered)
    
    @staticmethod
    def is_gradio_code(code: str) -> bool:
        """Check if Python code is a Gradio app"""
        if not code:
            return False
        lowered = code.lower()
        return (
            "import gradio" in lowered or
            "from gradio" in lowered or
            "gr.Interface(" in code or
            "gr.Blocks(" in code
        )
    
    @staticmethod
    def extract_html_document(text: str) -> str:
        """Extract HTML document from text, ignoring planning notes"""
        if not text:
            return text
        lower = text.lower()
        idx = lower.find("<!doctype html")
        if idx == -1:
            idx = lower.find("<html")
        return text[idx:] if idx != -1 else text

class TransformersJSProcessor:
    """Handles Transformers.js specific code processing"""
    
    @staticmethod
    def parse_transformers_js_output(text: str) -> Dict[str, str]:
        """Parse transformers.js output and extract the three files"""
        files = {
            'index.html': '',
            'index.js': '',
            'style.css': ''
        }
        
        if not text:
            return files
        
        # Multiple patterns for different code block variations
        html_patterns = [
            r'```html\s*\n([\s\S]*?)(?:```|\Z)',
            r'```htm\s*\n([\s\S]*?)(?:```|\Z)',
            r'```\s*(?:index\.html|html)\s*\n([\s\S]*?)(?:```|\Z)'
        ]
        
        js_patterns = [
            r'```javascript\s*\n([\s\S]*?)(?:```|\Z)',
            r'```js\s*\n([\s\S]*?)(?:```|\Z)',
            r'```\s*(?:index\.js|javascript|js)\s*\n([\s\S]*?)(?:```|\Z)'
        ]
        
        css_patterns = [
            r'```css\s*\n([\s\S]*?)(?:```|\Z)',
            r'```\s*(?:style\.css|css)\s*\n([\s\S]*?)(?:```|\Z)'
        ]
        
        # Extract content using patterns
        for pattern in html_patterns:
            html_match = re.search(pattern, text, re.IGNORECASE)
            if html_match:
                files['index.html'] = html_match.group(1).strip()
                break
        
        for pattern in js_patterns:
            js_match = re.search(pattern, text, re.IGNORECASE)
            if js_match:
                files['index.js'] = js_match.group(1).strip()
                break
        
        for pattern in css_patterns:
            css_match = re.search(pattern, text, re.IGNORECASE)
            if css_match:
                files['style.css'] = css_match.group(1).strip()
                break
        
        # Fallback: support === filename === format
        if not (files['index.html'] and files['index.js'] and files['style.css']):
            fallback_files = MultipageProcessor.parse_multipage_html_output(text)
            for key in files.keys():
                if key in fallback_files:
                    files[key] = fallback_files[key]
        
        return files
    
    @staticmethod
    def format_transformers_js_output(files: Dict[str, str]) -> str:
        """Format the three files into a single display string"""
        output = []
        output.append("=== index.html ===")
        output.append(files.get('index.html', ''))
        output.append("\n=== index.js ===")
        output.append(files.get('index.js', ''))
        output.append("\n=== style.css ===")
        output.append(files.get('style.css', ''))
        return '\n'.join(output)
    
    @staticmethod
    def build_transformers_inline_html(files: Dict[str, str]) -> str:
        """Merge transformers.js files into a single HTML document"""
        html = files.get('index.html') or ''
        js = files.get('index.js') or ''
        css = files.get('style.css') or ''
        
        # Normalize JS imports to stable CDN
        cdn_url = "https://cdn.jsdelivr.net/npm/@huggingface/transformers@3.7.2"
        
        def _normalize_imports(_code: str) -> str:
            if not _code:
                return _code or ""
            _code = re.sub(r"from\s+['\"]@huggingface/transformers['\"]", f"from '{cdn_url}'", _code)
            _code = re.sub(r"from\s+['\"]@xenova/transformers['\"]", f"from '{cdn_url}'", _code)
            _code = re.sub(r"from\s+['\"]https://cdn.jsdelivr.net/npm/@huggingface/transformers@[^'\"]+['\"]", f"from '{cdn_url}'", _code)
            _code = re.sub(r"from\s+['\"]https://cdn.jsdelivr.net/npm/@xenova/transformers@[^'\"]+['\"]", f"from '{cdn_url}'", _code)
            return _code
        
        # Extract and merge inline module scripts
        inline_modules = []
        try:
            for _m in re.finditer(r"<script\b[^>]*type=[\"']module[\"'][^>]*>([\s\S]*?)</script>", html, flags=re.IGNORECASE):
                inline_modules.append(_m.group(1))
            if inline_modules:
                html = re.sub(r"<script\b[^>]*type=[\"']module[\"'][^>]*>[\s\S]*?</script>\s*", "", html, flags=re.IGNORECASE)
        except Exception:
            pass
        
        # Combine JS code
        combined_js_parts = []
        if inline_modules:
            combined_js_parts.append("\n\n".join(inline_modules))
        if js:
            combined_js_parts.append(js)
        js = "\n\n".join([p for p in combined_js_parts if (p and p.strip())])
        js = _normalize_imports(js)
        
        # Add prelude for better compatibility
        if js.strip():
            prelude = (
                f"import {{ env }} from '{cdn_url}';\n"
                "try { env.useBrowserCache = false; } catch (e) {}\n"
                "try { if (env && env.backends && env.backends.onnx && env.backends.onnx.wasm) { env.backends.onnx.wasm.numThreads = 1; env.backends.onnx.wasm.proxy = false; } } catch (e) {}\n"
                f"(async () => {{ try {{ if (typeof globalThis.transformers === 'undefined') {{ const m = await import('{cdn_url}'); globalThis.transformers = m; }} }} catch (e) {{}} }})();\n"
            )
            js = prelude + js
        
        # Create minimal shell if needed
        doc = html.strip()
        if not doc or ('<html' not in doc.lower()):
            doc = (
                "<!DOCTYPE html>\n"
                "<html>\n<head>\n<meta charset=\"UTF-8\">\n<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n<title>Transformers.js App</title>\n</head>\n"
                "<body>\n<div id=\"app\"></div>\n</body>\n</html>"
            )
        
        # Remove local file references
        doc = re.sub(r"<link[^>]+href=\"[^\"]*style\.css\"[^>]*>\s*", "", doc, flags=re.IGNORECASE)
        doc = re.sub(r"<script[^>]+src=\"[^\"]*index\.js\"[^>]*>\s*</script>\s*", "", doc, flags=re.IGNORECASE)
        
        # Inline CSS
        if css:
            style_tag = f"<style>\n{css}\n</style>"
            if '</head>' in doc.lower():
                match = re.search(r"</head>", doc, flags=re.IGNORECASE)
                if match:
                    idx = match.start()
                    doc = doc[:idx] + style_tag + doc[idx:]
            else:
                match = re.search(r"<body[^>]*>", doc, flags=re.IGNORECASE)
                if match:
                    idx = match.end()
                    doc = doc[:idx] + "\n" + style_tag + doc[idx:]
                else:
                    doc = style_tag + doc
        
        # Inline JS with debugging and cleanup
        if js:
            script_tag = f"<script type=\"module\">\n{js}\n</script>"
            debug_overlay = TransformersJSProcessor._create_debug_overlay()
            cleanup_tag = TransformersJSProcessor._create_cleanup_script()
            
            match = re.search(r"</body>", doc, flags=re.IGNORECASE)
            if match:
                idx = match.start()
                doc = doc[:idx] + debug_overlay + script_tag + cleanup_tag + doc[idx:]
            else:
                doc = doc + debug_overlay + script_tag + cleanup_tag
        
        return doc
    
    @staticmethod
    def _create_debug_overlay() -> str:
        """Create debug overlay for transformers.js apps"""
        return (
            "<style>\n"
            "#anycoder-debug{position:fixed;left:0;right:0;bottom:0;max-height:45%;overflow:auto;"
            "background:rgba(0,0,0,.85);color:#9eff9e;padding:.5em;font:12px/1.4 monospace;z-index:2147483647;display:none}"
            "#anycoder-debug pre{margin:0;white-space:pre-wrap;word-break:break-word}"
            "</style>\n"
            "<div id=\"anycoder-debug\"></div>\n"
            "<script>\n"
            "(function(){\n"
            "  const el = document.getElementById('anycoder-debug');\n"
            "  function show(){ if(el && el.style.display!=='block'){ el.style.display='block'; } }\n"
            "  function log(msg){ try{ show(); const pre=document.createElement('pre'); pre.textContent=msg; el.appendChild(pre);}catch(e){} }\n"
            "  const origError = console.error.bind(console);\n"
            "  console.error = function(){ origError.apply(console, arguments); try{ log('console.error: ' + Array.from(arguments).map(a=>{try{return (typeof a==='string')?a:JSON.stringify(a);}catch(e){return String(a);}}).join(' ')); }catch(e){} };\n"
            "  window.addEventListener('error', e => { log('window.onerror: ' + (e && e.message ? e.message : 'Unknown error')); });\n"
            "  window.addEventListener('unhandledrejection', e => { try{ const r=e && e.reason; log('unhandledrejection: ' + (r && (r.message || JSON.stringify(r)))); }catch(err){ log('unhandledrejection'); } });\n"
            "})();\n"
            "</script>"
        )
    
    @staticmethod
    def _create_cleanup_script() -> str:
        """Create cleanup script for transformers.js apps"""
        return (
            "<script>\n"
            "(function(){\n"
            "  function cleanup(){\n"
            "    try { if (window.caches && caches.keys) { caches.keys().then(keys => keys.forEach(k => caches.delete(k))); } } catch(e){}\n"
            "    try { if (window.indexedDB && indexedDB.databases) { indexedDB.databases().then(dbs => dbs.forEach(db => db && db.name && indexedDB.deleteDatabase(db.name))); } } catch(e){}\n"
            "  }\n"
            "  window.addEventListener('pagehide', cleanup, { once: true });\n"
            "  window.addEventListener('beforeunload', cleanup, { once: true });\n"
            "})();\n"
            "</script>"
        )

class SvelteProcessor:
    """Handles Svelte specific code processing"""
    
    @staticmethod
    def parse_svelte_output(text: str) -> Dict[str, str]:
        """Parse Svelte output to extract individual files"""
        files = {
            'src/App.svelte': '',
            'src/app.css': ''
        }
        
        if not text:
            return files
        
        # Extract using code block patterns
        svelte_pattern = r'```svelte\s*\n([\s\S]+?)\n```'
        css_pattern = r'```css\s*\n([\s\S]+?)\n```'
        
        svelte_match = re.search(svelte_pattern, text, re.IGNORECASE)
        css_match = re.search(css_pattern, text, re.IGNORECASE)
        
        if svelte_match:
            files['src/App.svelte'] = svelte_match.group(1).strip()
        if css_match:
            files['src/app.css'] = css_match.group(1).strip()
        
        # Fallback: support === filename === format
        if not (files['src/App.svelte'] and files['src/app.css']):
            fallback_files = MultipageProcessor.parse_multipage_html_output(text)
            for key in files.keys():
                if key in fallback_files:
                    files[key] = fallback_files[key]
        
        return files
    
    @staticmethod
    def format_svelte_output(files: Dict[str, str]) -> str:
        """Format Svelte files into a single display string"""
        output = []
        output.append("=== src/App.svelte ===")
        output.append(files.get('src/App.svelte', ''))
        output.append("\n=== src/app.css ===")
        output.append(files.get('src/app.css', ''))
        return '\n'.join(output)

class MultipageProcessor:
    """Handles multi-page HTML projects"""
    
    @staticmethod
    def parse_multipage_html_output(text: str) -> Dict[str, str]:
        """Parse multi-page HTML output formatted as === filename === sections"""
        if not text:
            return {}
        
        from utils import remove_code_block
        cleaned = remove_code_block(text)
        files: Dict[str, str] = {}
        
        pattern = re.compile(r"^===\s*([^=\n]+?)\s*===\s*\n([\s\S]*?)(?=\n===\s*[^=\n]+?\s*===|\Z)", re.MULTILINE)
        
        for m in pattern.finditer(cleaned):
            name = m.group(1).strip()
            content = m.group(2).strip()
            # Remove accidental trailing fences
            content = re.sub(r"^```\w*\s*\n|\n```\s*$", "", content)
            files[name] = content
        
        return files
    
    @staticmethod
    def format_multipage_output(files: Dict[str, str]) -> str:
        """Format files back into === filename === sections"""
        if not isinstance(files, dict) or not files:
            return ""
        
        # Order with index.html first
        ordered_paths = []
        if 'index.html' in files:
            ordered_paths.append('index.html')
        for path in sorted(files.keys()):
            if path == 'index.html':
                continue
            ordered_paths.append(path)
        
        parts: List[str] = []
        for path in ordered_paths:
            parts.append(f"=== {path} ===")
            parts.append((files.get(path) or '').rstrip())
        
        return "\n".join(parts)
    
    @staticmethod
    def validate_and_autofix_files(files: Dict[str, str]) -> Dict[str, str]:
        """Ensure minimal contract for multi-file sites"""
        if not isinstance(files, dict) or not files:
            return files or {}
        
        normalized: Dict[str, str] = {}
        for k, v in files.items():
            safe_key = k.strip().lstrip('/')
            normalized[safe_key] = v
        
        html_files = [p for p in normalized.keys() if p.lower().endswith('.html')]
        has_index = 'index.html' in normalized
        
        # Create index.html if missing but other HTML files exist
        if not has_index and html_files:
            links = '\n'.join([f"<li><a href=\"{p}\">{p}</a></li>" for p in html_files])
            normalized['index.html'] = (
                "<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n<meta charset=\"utf-8\"/>\n"
                "<meta name=\"viewport\" content=\"width=device-width, initial-scale=1\"/>\n"
                "<title>Site Index</title>\n</head>\n<body>\n<h1>Site</h1>\n<ul>\n"
                + links + "\n</ul>\n</body>\n</html>"
            )
        
        # Collect asset references
        asset_refs: set[str] = set()
        patterns = [
            re.compile(r"<link[^>]+href=\"([^\"]+)\""),
            re.compile(r"<script[^>]+src=\"([^\"]+)\""),
            re.compile(r"<img[^>]+src=\"([^\"]+)\""),
            re.compile(r"<a[^>]+href=\"([^\"]+)\"")
        ]
        
        for path, content in list(normalized.items()):
            if not path.lower().endswith('.html'):
                continue
            for patt in patterns:
                for m in patt.finditer(content or ""):
                    ref = (m.group(1) or "").strip()
                    if not ref or ref.startswith(('http://', 'https://', 'data:', '#')):
                        continue
                    asset_refs.add(ref.lstrip('/'))
        
        # Add minimal stubs for missing references
        for ref in list(asset_refs):
            if ref not in normalized:
                if ref.lower().endswith('.css'):
                    normalized[ref] = "/* generated stub */\n"
                elif ref.lower().endswith('.js'):
                    normalized[ref] = "// generated stub\n"
                elif ref.lower().endswith('.html'):
                    normalized[ref] = (
                        "<!DOCTYPE html>\n<html lang=\"en\">\n<head><meta charset=\"utf-8\"/><meta name=\"viewport\" content=\"width=device-width, initial-scale=1\"/><title>Page</title></head>\n"
                        "<body><main><h1>Placeholder page</h1><p>This page was auto-created to satisfy an internal link.</p></main></body>\n</html>"
                    )
        
        return normalized
    
    @staticmethod
    def inline_multipage_into_single_preview(files: Dict[str, str]) -> str:
        """Inline local CSS/JS for iframe preview"""
        html = files.get('index.html', '')
        if not html:
            return ""
        
        doc = html
        
        # Inline CSS links
        def _inline_css(match):
            href = match.group(1)
            if href in files:
                return f"<style>\n{files[href]}\n</style>"
            return match.group(0)
        
        doc = re.sub(r"<link[^>]+href=\"([^\"]+)\"[^>]*/?>", _inline_css, doc, flags=re.IGNORECASE)
        
        # Inline JS scripts
        def _inline_js(match):
            src = match.group(1)
            if src in files:
                return f"<script>\n{files[src]}\n</script>"
            return match.group(0)
        
        doc = re.sub(r"<script[^>]+src=\"([^\"]+)\"[^>]*>\s*</script>", _inline_js, doc, flags=re.IGNORECASE)
        
        # Add client-side navigation for other pages
        MultipageProcessor._add_client_side_navigation(doc, files)
        
        return doc
    
    @staticmethod
    def _add_client_side_navigation(doc: str, files: Dict[str, str]) -> str:
        """Add client-side navigation for multi-page preview"""
        try:
            html_pages = {k: v for k, v in files.items() if k.lower().endswith('.html')}
            
            # Extract body content for each page
            _index_body = re.search(r"<body[^>]*>([\s\S]*?)</body>", doc, flags=re.IGNORECASE)
            html_pages['index.html'] = _index_body.group(1) if _index_body else doc
            
            encoded = base64.b64encode(json.dumps(html_pages).encode('utf-8')).decode('ascii')
            
            nav_script = (
                "<script>\n"
                "(function(){\n"
                f"  const MP_FILES = JSON.parse(atob('{encoded}'));\n"
                "  function extractBody(html){\n"
                "    try {\n"
                "      const doc = new DOMParser().parseFromString(html, 'text/html');\n"
                "      const title = doc.querySelector('title'); if (title) document.title = title.textContent || document.title;\n"
                "      return doc.body ? doc.body.innerHTML : html;\n"
                "    } catch(e){ return html; }\n"
                "  }\n"
                "  function loadPage(path){\n"
                "    if (!MP_FILES[path]) return false;\n"
                "    const bodyHTML = extractBody(MP_FILES[path]);\n"
                "    document.body.innerHTML = bodyHTML;\n"
                "    attach();\n"
                "    try { history.replaceState({}, '', '#'+path); } catch(e){}\n"
                "    return true;\n"
                "  }\n"
                "  function clickHandler(e){\n"
                "    const a = e.target && e.target.closest ? e.target.closest('a') : null;\n"
                "    if (!a) return;\n"
                "    const href = a.getAttribute('href') || '';\n"
                "    if (!href || href.startsWith('#') || /^https?:/i.test(href) || href.startsWith('mailto:') || href.startsWith('tel:')) return;\n"
                "    const clean = href.split('#')[0].split('?')[0];\n"
                "    if (MP_FILES[clean]) { e.preventDefault(); loadPage(clean); }\n"
                "  }\n"
                "  function attach(){ document.removeEventListener('click', clickHandler, true); document.addEventListener('click', clickHandler, true); }\n"
                "  document.addEventListener('DOMContentLoaded', function(){ attach(); const initial = (location.hash||'').slice(1); if (initial && MP_FILES[initial]) loadPage(initial); }, { once:true });\n"
                "})();\n"
                "</script>"
            )
            
            m = re.search(r"</body>", doc, flags=re.IGNORECASE)
            if m:
                i = m.start()
                doc = doc[:i] + nav_script + doc[i:]
            else:
                doc = doc + nav_script
                
        except Exception:
            pass  # Non-fatal in preview
        
        return doc

class MediaIntegrator:
    """Handles integration of generated media into code"""
    
    @staticmethod
    def apply_generated_media_to_html(html_content: str, user_prompt: str, 
                                    enable_text_to_image: bool = False,
                                    enable_image_to_image: bool = False, 
                                    input_image_data=None,
                                    image_to_image_prompt: Optional[str] = None,
                                    text_to_image_prompt: Optional[str] = None,
                                    enable_image_to_video: bool = False,
                                    image_to_video_prompt: Optional[str] = None,
                                    session_id: Optional[str] = None,
                                    enable_text_to_video: bool = False,
                                    text_to_video_prompt: Optional[str] = None,
                                    enable_text_to_music: bool = False,
                                    text_to_music_prompt: Optional[str] = None,
                                    token=None) -> str:
        """Apply media generation to HTML content"""
        
        # Detect multi-page structure
        is_multipage = False
        multipage_files = {}
        entry_html_path = None
        
        try:
            multipage_files = MultipageProcessor.parse_multipage_html_output(html_content) or {}
            if multipage_files:
                is_multipage = True
                entry_html_path = 'index.html' if 'index.html' in multipage_files else next((p for p in multipage_files.keys() if p.lower().endswith('.html')), None)
        except Exception:
            pass
        
        result = multipage_files.get(entry_html_path, html_content) if is_multipage and entry_html_path else html_content
        
        try:
            # Process media generation based on priority
            if enable_image_to_video and input_image_data is not None:
                result = MediaIntegrator._apply_image_to_video(result, user_prompt, image_to_video_prompt, input_image_data, session_id, token)
            elif enable_text_to_video:
                result = MediaIntegrator._apply_text_to_video(result, user_prompt, text_to_video_prompt, session_id, token)
            elif enable_text_to_music:
                result = MediaIntegrator._apply_text_to_music(result, user_prompt, text_to_music_prompt, session_id, token)
            elif enable_image_to_image and input_image_data is not None:
                result = MediaIntegrator._apply_image_to_image(result, user_prompt, image_to_image_prompt, input_image_data, token)
            elif enable_text_to_image:
                result = MediaIntegrator._apply_text_to_image(result, user_prompt, text_to_image_prompt, token)
        except Exception as e:
            print(f"[MediaApply] Error during media generation: {str(e)}")
        
        # Return updated content
        if is_multipage and entry_html_path:
            multipage_files[entry_html_path] = result
            return MultipageProcessor.format_multipage_output(multipage_files)
        
        return result
    
    @staticmethod
    def _apply_image_to_video(html_content: str, user_prompt: str, prompt: Optional[str], 
                            input_image_data, session_id: Optional[str], token) -> str:
        """Apply image-to-video generation"""
        i2v_prompt = (prompt or user_prompt or "").strip()
        print(f"[MediaApply] Applying image-to-video with prompt: {i2v_prompt}")
        
        try:
            video_html_tag = generate_video_from_image(input_image_data, i2v_prompt, session_id=session_id, token=token)
            if not video_html_tag.startswith("Error") and validate_video_html(video_html_tag):
                return MediaIntegrator._place_media_in_html(html_content, video_html_tag, "video")
        except Exception as e:
            print(f"[MediaApply] Image-to-video generation failed: {str(e)}")
        
        return html_content
    
    @staticmethod
    def _apply_text_to_video(html_content: str, user_prompt: str, prompt: Optional[str], 
                           session_id: Optional[str], token) -> str:
        """Apply text-to-video generation"""
        t2v_prompt = (prompt or user_prompt or "").strip()
        print(f"[MediaApply] Applying text-to-video with prompt: {t2v_prompt}")
        
        try:
            video_html_tag = generate_video_from_text(t2v_prompt, session_id=session_id, token=token)
            if not video_html_tag.startswith("Error") and validate_video_html(video_html_tag):
                return MediaIntegrator._place_media_in_html(html_content, video_html_tag, "video")
        except Exception as e:
            print(f"[MediaApply] Text-to-video generation failed: {str(e)}")
        
        return html_content
    
    @staticmethod
    def _apply_text_to_music(html_content: str, user_prompt: str, prompt: Optional[str], 
                           session_id: Optional[str], token) -> str:
        """Apply text-to-music generation"""
        t2m_prompt = (prompt or user_prompt or "").strip()
        print(f"[MediaApply] Applying text-to-music with prompt: {t2m_prompt}")
        
        try:
            audio_html_tag = generate_music_from_text(t2m_prompt, session_id=session_id, token=token)
            if not audio_html_tag.startswith("Error"):
                return MediaIntegrator._place_media_in_html(html_content, audio_html_tag, "audio")
        except Exception as e:
            print(f"[MediaApply] Text-to-music generation failed: {str(e)}")
        
        return html_content
    
    @staticmethod
    def _apply_image_to_image(html_content: str, user_prompt: str, prompt: Optional[str], 
                            input_image_data, token) -> str:
        """Apply image-to-image generation"""
        i2i_prompt = (prompt or user_prompt or "").strip()
        print(f"[MediaApply] Applying image-to-image with prompt: {i2i_prompt}")
        
        try:
            image_html_tag = generate_image_to_image(input_image_data, i2i_prompt, token=token)
            if not image_html_tag.startswith("Error"):
                return MediaIntegrator._place_media_in_html(html_content, image_html_tag, "image")
        except Exception as e:
            print(f"[MediaApply] Image-to-image generation failed: {str(e)}")
        
        return html_content
    
    @staticmethod
    def _apply_text_to_image(html_content: str, user_prompt: str, prompt: Optional[str], token) -> str:
        """Apply text-to-image generation"""
        t2i_prompt = (prompt or user_prompt or "").strip()
        print(f"[MediaApply] Applying text-to-image with prompt: {t2i_prompt}")
        
        try:
            image_html_tag = generate_image_with_qwen(t2i_prompt, 0, token=token)
            if not image_html_tag.startswith("Error"):
                return MediaIntegrator._place_media_in_html(html_content, image_html_tag, "image")
        except Exception as e:
            print(f"[MediaApply] Text-to-image generation failed: {str(e)}")
        
        return html_content
    
    @staticmethod
    def _place_media_in_html(html_content: str, media_html: str, media_type: str) -> str:
        """Place generated media in appropriate location in HTML"""
        # Find good insertion points
        insertion_patterns = [
            r'(<main[^>]*>)',
            r'(<section[^>]*class="[^"]*hero[^"]*"[^>]*>)',
            r'(<div[^>]*class="[^"]*container[^"]*"[^>]*>)',
            r'(<body[^>]*>)'
        ]
        
        for pattern in insertion_patterns:
            match = re.search(pattern, html_content, re.IGNORECASE)
            if match:
                insertion_point = match.end()
                container_class = "video-container" if media_type == "video" else f"{media_type}-container"
                media_with_container = f'\n    <div class="{container_class}" style="margin: 20px 0; text-align: center;">\n        {media_html}\n    </div>'
                return html_content[:insertion_point] + media_with_container + html_content[insertion_point:]
        
        # Fallback: append before closing body
        body_close = html_content.rfind('</body>')
        if body_close != -1:
            return html_content[:body_close] + f'\n    {media_html}\n' + html_content[body_close:]
        
        # Last resort: append at end
        return html_content + f'\n{media_html}'

# Export main functions and classes
code_processor = CodeProcessor()
transformers_processor = TransformersJSProcessor()
svelte_processor = SvelteProcessor()
multipage_processor = MultipageProcessor()
media_integrator = MediaIntegrator()

# Main exports
def is_streamlit_code(code: str) -> bool:
    return code_processor.is_streamlit_code(code)

def is_gradio_code(code: str) -> bool:
    return code_processor.is_gradio_code(code)

def extract_html_document(text: str) -> str:
    return code_processor.extract_html_document(text)

def parse_transformers_js_output(text: str) -> Dict[str, str]:
    return transformers_processor.parse_transformers_js_output(text)

def format_transformers_js_output(files: Dict[str, str]) -> str:
    return transformers_processor.format_transformers_js_output(files)

def build_transformers_inline_html(files: Dict[str, str]) -> str:
    return transformers_processor.build_transformers_inline_html(files)

def parse_svelte_output(text: str) -> Dict[str, str]:
    return svelte_processor.parse_svelte_output(text)

def format_svelte_output(files: Dict[str, str]) -> str:
    return svelte_processor.format_svelte_output(files)

def parse_multipage_html_output(text: str) -> Dict[str, str]:
    return multipage_processor.parse_multipage_html_output(text)

def format_multipage_output(files: Dict[str, str]) -> str:
    return multipage_processor.format_multipage_output(files)

def validate_and_autofix_files(files: Dict[str, str]) -> Dict[str, str]:
    return multipage_processor.validate_and_autofix_files(files)

def inline_multipage_into_single_preview(files: Dict[str, str]) -> str:
    return multipage_processor.inline_multipage_into_single_preview(files)

def apply_generated_media_to_html(html_content: str, user_prompt: str, **kwargs) -> str:
    return media_integrator.apply_generated_media_to_html(html_content, user_prompt, **kwargs)