from flask import Flask,request
import pymongo
import time
from bson import ObjectId
from datetime import datetime, timezone
client = pymongo.MongoClient("mongodb://localhost:27017")
db = client["bank"]
users_collection = db["users"]
account_collection = db["accounts"]
transaction_collection = db["transactions"]


class User:
    username = None
    password = None
    codemeli = None
    is_deleted = None
    created_at = None
    updated_at =None
    deleted_at= None
    def __init__(self):
        self.created_at = get_current_time()

    
def get_current_time():
    return datetime.now(timezone.utc)
class Account:
    acc_type = None
    acc_num = None
    balance  = None
    username = None
    def __init__(self):
        self.balance=100
        
class Transaction:
    acc_num= None
    time= None
    transaction_type= None
    amount= None
    def __init__(self):
      self.time=  time.time()


app = Flask(__name__)
@app.route("/")
def home():
    return "hello world"



@app.route("/user-list")
def get_users():
    users = []
    users_in_db = users_collection.find()
    for user in users_in_db:
        users.append({
        "codemeli": user["codemeli"],
        "username": user["username"]
        })
    return users

@app.route("/add-user",methods=["POST"])
def add_user():
    body=request.json
    newUser = User()
    newUser.updated_at = None
    newUser.deleted_at = None
    newUser.username = body["username"]
    newUser.codemeli = body["codemeli"]
    newUser.password = body["password"]
    newUser.is_deleted = False
    if body["username"] == "" or body["codemeli"] == "" or body["password"] == "":
      return {"message": "Fields cannot be empty"}, 400
    users_collection.insert_one(newUser.__dict__)
    return {'message':'You are registered successfully'},201

@app.route("/login",methods=["POST"])
def login():
    body=request.json
    find_user= users_collection.find_one({"username":body["username"],"password":body["password"]})
    if find_user ==None:
      return {'message':'couldnt find'},404
    else:
     return {'message':'You are login successfully'}
 
 
@app.route('/user/<id>')
def get_user_detail(id):
    user = users_collection.find_one({
        "_id": ObjectId(id)
    })
    if user == None:
        return {"message": "user not found"}, 404
    return {
        "username": user["username"], 
        "codemeli": user["codemeli"] 
            }



@app.route('/hard-delete-user', methods=["DELETE"])
def hard_delete_user():
    body = request.json
    id = body["id"]
    result = users_collection.delete_one({
        "_id": ObjectId(id)
    })
    if result.deleted_count == 0:
        return { "message": "user not found"}, 404
    return { "message": "user deleted successfully"}, 204

@app.route('/soft-delete-user', methods=["DELETE"])
def soft_delete_user():
    body = request.json
    id=body["id"]
    result = users_collection.update_one({"_id":ObjectId(id),"is_deleted":False},{"$set":{"is_deleted":True,"deleted_at": get_current_time()
}})
    if result.matched_count==0:
        return{"message":"delete failed"},404
    return {"message":"user is deleted successfully"}


@app.route('/restore-user', methods=["POST"])
def restore_user():
    body = request.json
    id=body["id"]
    result = users_collection.update_one({"_id":ObjectId(id),"is_deleted":True},{"$set":{"is_deleted":False,"is_deleted":None}})
    if result.matched_count==0:
        return{"message":"restore failed"},404
    return {"message":"user is restored successfully"}


@app.route('/update-user', methods=["PUT"])
def update_user():
    body = request.json
    id = body["id"]
    codemeli = body["codemeli"]
    username = body["username"]
    result = users_collection.update_one({
        "_id": ObjectId(id)
    }, {"$set":{"codemeli": codemeli, "username": username, "updated_at":get_current_time()}})
    if result.matched_count == 0:
        return { "message": "user not found"}, 404
    return { "message": "user updated successfully"}

    
app.run(debug=True)