from flask import Blueprint, render_template, redirect, url_for, request, current_app
from flask_login import login_required, current_user, login_user
from models import db
from models import User, Item
import json
from sqlalchemy import desc, text

api_bp = Blueprint("api", __name__, url_prefix="/api")

@api_bp.route("/validate_key", methods=["POST"])
def validate_key():
    result={}
    result['status']=0
    result['data'] = ''
    if "key" in request.form:
        key = request.form["key"]
        if key == current_app.config["APPLICATION_KEY"]:
            result['status'] = 1
        else:
            result['message'] = 'Unknown Application-Key'
    return json.dumps(result), 200

@api_bp.route("/login", methods=["POST"])
def login():
    result={}
    result['status']=0
    result['data'] = ''
    if "user" in request.form and "password" in request.form:
        user = request.form["user"]
        password = request.form["password"]
        user = User.query.filter_by(name=user).first()
        if user and user.check_password(password):
            if not user.is_approved:
                result['message'] = 'User is pending approval.'
            elif user.group_id == 0:
                result['message'] = 'User is not connected to a group.'
            else:
                login_user(user)
                result['status'] = 1
                result['data'] = user.as_dict()
        else:
            result['message'] = 'User or password unknown'
    return json.dumps(result), 200

@api_bp.route("/register", methods=["POST"])
def register():
    result={}
    result['status']=0
    result['data'] = ''
    if "user" in request.form and "password" in request.form:
        username = request.form["user"].strip()
        password = request.form["password"]
        user = User.query.filter_by(name=username).first()
        if user:
            result['message'] = 'Username is not unique. Pick something else please.'
        else:
            user = User(name=username)
            group_id = user.set_group_id(password)
            if group_id == 0:
                result['message'] = 'Unknown registration key.'
                return json.dumps(result), 200

            result['status'] = 2
            result['message'] = 'Registration Ok. Awaiting approval.'
            user.set_password(password)
            user.group_id = group_id
            db.session.add(user)
            db.session.commit()

    return json.dumps(result), 200

@api_bp.route("/load_lists", methods=["POST"])
@login_required
def load_lists():
    result={}
    result['status']=1 # from this call the result is always 1, empty or not
    result['data'] = current_user.all_my_lists_as_dict()

    return json.dumps(result), 200

@api_bp.route("/load_items", methods=["POST"])
@login_required
def load_items():
    result={}
    result['status']=1 # from this call the result is always 1, empty or not
    result['data'] = ''
    if "listid" in request.form:
        listid = int(request.form["listid"])
        if current_user.can_access_list(listid):
            items=Item.query.filter_by(listofitems_id=listid, is_suggestion=False).order_by(text("is_checked, category, label")).all()
            if items:
                result['data'] = [ i.as_dict() for i in items]
        else:
            result['status'] = 0
            result['message'] = 'Forbidden'
            return json.dumps(result), 403

    return json.dumps(result), 200