from flask import Flask, render_template, Response, stream_with_context, request
from flask_flatpages import FlatPages
from werkzeug.middleware.proxy_fix import ProxyFix
import requests

app = Flask(__name__)
app.wsgi_app = ProxyFix(app.wsgi_app, x_proto=1, x_host=1)

app.config.update(
    FLATPAGES_AUTO_RELOAD = True,
    FLATPAGES_EXTENSION = '.md',
    FLATPAGES_MARKDOWN_EXTENSIONS = ['fenced_code', 'tables']
)

pages = FlatPages(app)

@app.route('/')
def index():
    # Sort posts by date metadata
    posts = sorted(pages, key=lambda p: p.meta.get('date'), reverse=True)
    return render_template('index.html', posts=posts)

@app.route('/about')
def about():
    return render_template('about.html')

@app.route('/proxy-chat', methods=['POST'])
def proxy_chat():
    target_url = "http://192.168.0.37:5002/v1/chat/completions"
    
    # Forward the request to your local LLM
    # We use stream=True here to get the chunks from the backend
    req = requests.post(target_url, json=request.json, stream=True)

    def generate():
        # Yield each chunk as it arrives from the LLM
        for chunk in req.iter_content(chunk_size=1024):
            yield chunk

    return Response(stream_with_context(generate()), content_type=req.headers['content-type'])

@app.route('/post/<path:path>/') # Adding /post/ prefix helps organize URLs
def post(path):
    page = pages.get_or_404(path)
    return render_template('post.html', page=page)

@app.route('/tag/<string:tag_name>/')
def tag(tag_name):
    tagged_pages = [p for p in pages if tag_name in p.meta.get('tags', [])]
    return render_template('tag.html', pages=tagged_pages, tag_name=tag_name)

@app.context_processor
def inject_tags():
    all_tags = set()
    for page in pages:
        t = page.meta.get('tags', [])
        if isinstance(t, list):
            all_tags.update(t)
    return dict(all_cloud_tags=sorted(list(all_tags)))

if __name__ == "__main__":
    app.run(host='0.0.0.0', port=5001, debug=True)