from pathlib import Path
from flask import send_file, abort, Blueprint, render_template, session, redirect, url_for, flash
import hmac, hashlib, time, urllib.parse, os

OTB_PORTAL_SHARED_SECRET = os.getenv("OTB_PORTAL_SHARED_SECRET", "!2Eas678")
OTB_CLOUD_URL = os.getenv("OTB_CLOUD_URL", "https://otb-cloud.outsidethebox.top")

portal_services_bp = Blueprint("portal_services", __name__)

def _portal_user_is_logged_in() -> bool:
    return bool(
        session.get("portal_user_id")
        or session.get("client_user_id")
        or session.get("portal_client_id")
        or session.get("client_id")
        or session.get("user_id")
    )

@portal_services_bp.route("/portal/services")
def portal_services_home():
    if not _portal_user_is_logged_in():
        flash("Please sign in to access services.", "warning")
        return redirect(url_for("portal_login"))

    client = {
        "contact_name": session.get("portal_contact_name"),
        "company_name": session.get("portal_company_name"),
        "email": session.get("portal_email"),
    }

    client_name = (
        client.get("contact_name")
        or client.get("company_name")
        or client.get("email")
        or "Client"
    )

    services = [
        {
            "key": "follow_me",
            "name": "Follow-me Tracker",
            "summary": "Create and manage your GPS tracking network. Free for up to 2 users.",
            "status": "beta",
            "enabled": True,
            "href": "/portal/services/follow-me-launch",
            "button_text": "Open Follow-me",
        },
        {
            "key": "video_render",
            "name": "Video Rendering / Streaming",
            "summary": "Submit video rendering, conversion, and hosted streaming jobs.",
            "status": "coming_soon",
            "enabled": False,
            "href": "#",
            "button_text": "Coming Soon",
        },
        {
            "key": "otb_cloud",
            "name": "OTB Cloud Backup & Storage",
            "summary": "Secure backup and storage for documents, photos, videos, and device uploads.",
            "status": "beta",
            "enabled": True,
            "href": "/portal/services/otb-cloud-launch",
            "button_text": "Open OTB Cloud",
        },
        {
            "key": "miner_rentals",
            "name": "Miner Rentals",
            "summary": "Rent available OTB hashpower by time or package.",
            "status": "coming_soon",
            "enabled": False,
            "href": "#",
            "button_text": "Coming Soon",
        },
    ]

    return render_template(
        "portal/services_here.html",
        client=client,
        client_name=client_name,
        services=services,
    )


def build_otb_cloud_handoff_url(uid, email):
    ts = str(int(time.time()))
    payload = f"{uid}|{email}|{ts}".encode("utf-8")
    sig = hmac.new(
        OTB_PORTAL_SHARED_SECRET.encode(),
        payload,
        hashlib.sha256
    ).hexdigest()

    query = urllib.parse.urlencode({
        "uid": uid,
        "email": email,
        "ts": ts,
        "sig": sig,
    })

    return f"{OTB_CLOUD_URL}/auth/handoff?{query}"


@portal_services_bp.route("/portal/services/otb-cloud-launch")
def portal_launch_otb_cloud():
    if not _portal_user_is_logged_in():
        flash("Please sign in to access services.", "warning")
        return redirect(url_for("portal_login"))

    uid = session.get("portal_client_id")
    email = session.get("portal_email")

    if not uid or not email:
        flash("Unable to launch OTB Cloud because the portal session is missing required account details.", "danger")
        return redirect(url_for("portal_services.portal_services_home"))

    url = build_otb_cloud_handoff_url(uid, email)
    return redirect(url)


@portal_services_bp.route("/portal/downloads/apps/<app_slug>/latest")
def portal_download_latest_app(app_slug):
    client = get_portal_client()
    if not client:
        return redirect("/portal")

    allowed_apps = {
        "otb-cloud": {
            "filename": "latest.apk",
            "download_name": "otb-cloud-latest.apk",
        },
        "follow-me": {
            "filename": "latest.apk",
            "download_name": "follow-me-latest.apk",
        },
    }

    if app_slug not in allowed_apps:
        abort(404)

    base_dir = Path(__file__).resolve().parents[2] / "downloads" / "apps" / app_slug
    file_path = (base_dir / allowed_apps[app_slug]["filename"]).resolve()

    try:
        if base_dir.resolve() not in file_path.parents:
            abort(403)
        if not file_path.exists() or not file_path.is_file():
            abort(404)
    except Exception:
        abort(404)

    return send_file(
        str(file_path),
        as_attachment=True,
        download_name=allowed_apps[app_slug]["download_name"],
        mimetype="application/vnd.android.package-archive",
    )