import os
from flask import Flask, render_template, request, redirect, url_for, flash, jsonify

import database as db
import credentials
from scheduler import start_background_worker

app = Flask(__name__)
app.secret_key = os.environ.get("SECRET_KEY", "dev-key-change-me")

db.init_db()
start_background_worker()


@app.route("/")
def index():
    tasks = db.list_tasks()
    configured = credentials.is_configured()
    return render_template("index.html", tasks=tasks, configured=configured)


@app.route("/tasks", methods=["POST"])
def add_task():
    video_url = request.form.get("video_url", "").strip()
    title = request.form.get("title", "").strip()
    description = request.form.get("description", "").strip()
    privacy = request.form.get("privacy", "SELF")

    if not video_url or not title:
        flash("Video URL and title are required.", "error")
        return redirect(url_for("index"))

    if not credentials.is_configured():
        flash("Add your Page ID and access token (Settings, or as env secrets) before queuing a task.", "error")
        return redirect(url_for("index"))

    db.create_task(video_url, title, description, privacy)
    flash("Task queued. You can close this tab -- it keeps uploading in the background.", "success")
    return redirect(url_for("index"))


@app.route("/tasks/<int:task_id>/delete", methods=["POST"])
def remove_task(task_id):
    db.delete_task(task_id)
    return redirect(url_for("index"))


@app.route("/tasks.json")
def tasks_json():
    """Polled by the page's JS to refresh statuses without a full reload."""
    return jsonify(db.list_tasks())


@app.route("/settings", methods=["GET", "POST"])
def settings():
    env_active = credentials.using_env_secrets()

    if request.method == "POST":
        if env_active:
            flash("Page ID / token are set via env secrets and can't be edited here.", "error")
            return redirect(url_for("settings"))
        page_id = request.form.get("page_id", "").strip()
        token = request.form.get("access_token", "").strip()
        if page_id:
            db.set_setting("page_id", page_id)
        if token:
            db.set_setting("access_token", token)
        flash("Settings saved.", "success")
        return redirect(url_for("settings"))

    return render_template(
        "settings.html",
        page_id=db.get_setting("page_id", ""),
        access_token=db.get_setting("access_token", ""),
        env_active=env_active,
    )


if __name__ == "__main__":
    port = int(os.environ.get("PORT", 7860))
    app.run(host="0.0.0.0", port=port)