from functools import wraps

from flask import Blueprint, flash, redirect, render_template, request, session, url_for

from app.db import get_db
from app.auth.utils import create_device_directories, slugify_device_name

bp = Blueprint("main", __name__)

def portal_session_required(view_func):
    @wraps(view_func)
    def wrapped(*args, **kwargs):
        if "otb_user_id" not in session or "otb_tenant_id" not in session:
            return redirect(url_for("auth.login_required_notice"))
        return view_func(*args, **kwargs)
    return wrapped

@bp.route("/")
def index():
    if "otb_user_id" in session:
        return redirect(url_for("main.dashboard"))
    return redirect(url_for("auth.login_required_notice"))

@bp.route("/dashboard")
@portal_session_required
def dashboard():
    db = get_db()

    with db.cursor() as cur:
        cur.execute(
            """
            SELECT id, device_name, device_type, relative_path, is_active, created_at
            FROM devices
            WHERE tenant_id = %s
            ORDER BY id
            """,
            (session["otb_tenant_id"],),
        )
        devices = cur.fetchall()

    return render_template(
        "cloud/dashboard.html",
        user_email=session.get("otb_email"),
        tenant_slug=session.get("otb_tenant_slug"),
        devices=devices,
    )

@bp.route("/devices/new", methods=["GET", "POST"])
@portal_session_required
def add_device():
    if request.method == "GET":
        return render_template(
            "cloud/device_new.html",
            user_email=session.get("otb_email"),
            tenant_slug=session.get("otb_tenant_slug"),
        )

    device_name = (request.form.get("device_name") or "").strip()
    device_type = (request.form.get("device_type") or "").strip()

    if not device_name:
        flash("Device name is required.", "warning")
        return render_template(
            "cloud/device_new.html",
            user_email=session.get("otb_email"),
            tenant_slug=session.get("otb_tenant_slug"),
            device_name=device_name,
            device_type=device_type,
        )

    if not device_type:
        flash("Device type is required.", "warning")
        return render_template(
            "cloud/device_new.html",
            user_email=session.get("otb_email"),
            tenant_slug=session.get("otb_tenant_slug"),
            device_name=device_name,
            device_type=device_type,
        )

    slug = slugify_device_name(device_name)
    relative_path = f"devices/{slug}"

    db = get_db()

    with db.cursor() as cur:
        cur.execute(
            """
            SELECT id
            FROM devices
            WHERE tenant_id = %s AND device_name = %s
            """,
            (session["otb_tenant_id"], device_name),
        )
        existing = cur.fetchone()

        if existing:
            flash("A device with that name already exists.", "warning")
            return render_template(
                "cloud/device_new.html",
                user_email=session.get("otb_email"),
                tenant_slug=session.get("otb_tenant_slug"),
                device_name=device_name,
                device_type=device_type,
            )

        cur.execute(
            """
            INSERT INTO devices (tenant_id, device_name, device_type, relative_path, is_active)
            VALUES (%s, %s, %s, %s, 1)
            """,
            (session["otb_tenant_id"], device_name, device_type, relative_path),
        )

        cur.execute(
            """
            INSERT INTO audit_logs (
                tenant_id, user_id, actor_type, event_type, ip_address, user_agent, event_detail
            ) VALUES (%s, %s, 'user', 'device_created', %s, %s, %s)
            """,
            (
                session["otb_tenant_id"],
                session["otb_user_id"],
                request.headers.get("X-Forwarded-For", request.remote_addr),
                request.headers.get("User-Agent", ""),
                f"Created device '{device_name}' ({device_type}) at {relative_path}",
            ),
        )

    db.commit()

    create_device_directories(session["otb_tenant_slug"], relative_path)

    flash("Device added successfully.", "success")
    return redirect(url_for("main.dashboard"))