from flask import (
    Flask,
    render_template,
    send_from_directory,
    request,
    jsonify,
    redirect,
    url_for,
    session,
    render_template_string,
)
import os
import time
import threading
from apscheduler.schedulers.background import BackgroundScheduler
from libs.generic import (
    load_config,
    load_recent_prompts,
    get_details_from_png,
    get_current_version,
    load_models_from_config,
    load_topics_from_config
)
from libs.comfyui import cancel_current_job, create_image, select_model
from libs.ollama import create_prompt_on_openwebui

# workflow test commit

user_config = load_config()

app = Flask(__name__)
app.secret_key = os.environ.get('SECRET_KEY') 

image_folder = "./output"


@app.route("/", methods=["GET"])
def index() -> str:
    """
    Renders the main HTML template with image and prompt.
    """
    image_filename = "./image.png"
    image_path = os.path.join(image_folder, image_filename)

    prompt = get_details_from_png(image_path)["p"]

    version = get_current_version()

    return render_template(
        "index.html",
        image=image_filename,
        prompt=prompt,
        reload_interval=user_config["frame"]["reload_interval"],
        version=version,
    )


@app.route('/login', methods=['GET', 'POST'])
def login():
    if request.method == 'POST':
        if request.form['password'] == user_config["frame"]["password_for_auth"]:
            session['authenticated'] = True
            return render_template("create_image.html", models=load_models_from_config(), topics=load_topics_from_config())
        else:
            return  redirect(url_for('login'))
    return render_template('login.html')


@app.route("/images", methods=["GET"])
def gallery() -> str:
    images = []
    for f in os.listdir(image_folder):
        if f.lower().endswith(("png", "jpg", "jpeg", "gif")):
            images.append({"filename": f})
    images = sorted(
        images,
        key=lambda x: os.path.getmtime(os.path.join(image_folder, x["filename"])),
        reverse=True,
    )
    return render_template("gallery.html", images=images)


@app.route("/image-details/<filename>", methods=["GET"])
def image_details(filename):
    path = os.path.join(image_folder, filename)
    if not os.path.exists(path):
        return {"error": "File not found"}, 404
    details = get_details_from_png(path)
    return {"prompt": details["p"], "model": details["m"], "date": details["d"]}


@app.route("/images/thumbnails/<path:filename>")
def serve_thumbnail(filename):
    return send_from_directory("output/thumbnails", filename)


@app.route("/images/<filename>", methods=["GET"])
def images(filename: str) -> None:
    """
    Serves the requested image file.
    Args:
        filename (str): The name of the image file.
    Returns:
        None: Sends the image file.
    """
    return send_from_directory(image_folder, filename)


@app.route("/cancel", methods=["GET"])
def cancel_job() -> None:
    """
    Serves the requested image file.
    Args:
        filename (str): The name of the image file.
    Returns:
        None: Sends the image file.
    """
    return cancel_current_job()


@app.route("/create", methods=["GET", "POST"])
def create():
    if request.method == "POST":
        prompt = request.form.get("prompt")
        selected_workflow, model = select_model(request.form.get("model") or "Random")
        topic = request.form.get("topic")

        if not prompt:
            prompt = create_prompt_on_openwebui(user_config["comfyui"]["prompt"], topic)

        # Start generation in background
        threading.Thread(target=lambda: create_image(prompt, model)).start()

        return redirect(
            url_for("image_queued", prompt=prompt, model=model.split(".")[0])
        )

    # For GET requests, just show the form to enter prompt
    return render_template("create_image.html", models=load_models_from_config())


@app.route("/image_queued")
def image_queued():
    prompt = request.args.get("prompt", "No prompt provided.")
    model = request.args.get("model", "No model selected.").split(".")[0]
    return render_template("image_queued.html", prompt=prompt, model=model)


def scheduled_task() -> None:
    """Executes the scheduled image generation task."""
    print(f"Executing scheduled task at {time.strftime('%Y-%m-%d %H:%M:%S')}")
    create_image(None)


@app.route("/create_image", methods=["GET"])
def create_image_endpoint() -> str:
    """
    Renders the create image template with image and prompt.
    """
    if user_config["frame"]["create_requires_auth"] == "True" and not session.get('authenticated'):
        return redirect(url_for("login"))

    return render_template("create_image.html", models=load_models_from_config(), topics=load_topics_from_config())


if user_config["frame"]["auto_regen"] == "True":
    if os.environ.get("WERKZEUG_RUN_MAIN") == "true":
        scheduler = BackgroundScheduler()
        regen_time = user_config["frame"]["regen_time"].split(":")
        scheduler.add_job(
            scheduled_task,
            "cron",
            hour=regen_time[0],
            minute=regen_time[1],
            id="scheduled_task",
            max_instances=1,  # prevent overlapping
            replace_existing=True,  # don't double-schedule
        )
        scheduler.start()

    os.makedirs(image_folder, exist_ok=True)
    app.run(host="0.0.0.0", port=user_config["frame"]["port"], debug=True)