import uuid

from datetime import date, datetime

import brewman.schemas.voucher as schemas

from fastapi import APIRouter, Depends, HTTPException, Request, Security, status
from sqlalchemy.orm import Session

from ..core.security import get_current_active_user as get_user
from ..core.session import get_finish_date, get_start_date
from ..db.session import SessionLocal
from ..models.master import Employee
from ..models.voucher import Attendance
from ..routers.fingerprint import get_prints
from ..schemas.auth import UserToken
from .attendance import date_range


router = APIRouter()


# Dependency
def get_db() -> Session:
    try:
        db = SessionLocal()
        yield db
    finally:
        db.close()


@router.get("", response_model=schemas.EmployeeAttendance)
def show_blank(
    request: Request,
    user: UserToken = Security(get_user, scopes=["attendance"]),
):
    return {
        "startDate": get_start_date(request.session),
        "finishDate": get_finish_date(request.session),
        "employee": None,
        "body": [],
    }


@router.get("/{id_}", response_model=schemas.EmployeeAttendance)
def employee_attendance_report(
    id_: uuid.UUID,
    request: Request,
    s: str = None,
    f: str = None,
    db: Session = Depends(get_db),
    user: UserToken = Security(get_user, scopes=["attendance"]),
):
    employee: Employee = db.query(Employee).filter(Employee.id == id_).first()
    if employee is None:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="Employee not found",
        )
    start_date = s if s is not None else get_start_date(request.session)
    finish_date = f if f is not None else get_finish_date(request.session)
    info = {
        "startDate": start_date,
        "finishDate": finish_date,
        "employee": {"id": employee.id, "name": employee.name},
    }
    start_date = datetime.strptime(start_date, "%d-%b-%Y").date()
    finish_date = datetime.strptime(finish_date, "%d-%b-%Y").date()
    start_date = (
        employee.joining_date if employee.joining_date > start_date else start_date
    )
    finish_date = (
        employee.leaving_date
        if not employee.is_active and employee.leaving_date < finish_date
        else finish_date
    )
    info["body"] = employee_attendance(employee, start_date, finish_date, db)
    return info


def employee_attendance(
    employee: Employee, start_date: date, finish_date: date, db: Session
):
    list_ = []
    for item in date_range(start_date, finish_date, inclusive=True):
        att = (
            db.query(Attendance)
            .filter(Attendance.employee_id == employee.id)
            .filter(Attendance.date == item)
            .filter(Attendance.is_valid == True)
            .first()
        )
        att = 0 if att is None else att.attendance_type
        prints, hours_worked, full_day = get_prints(employee.id, item, db)
        list_.append(
            schemas.EmployeeAttendanceItem(
                date=item.strftime("%d-%b-%Y"),
                attendanceType={"id": att},
                prints=prints,
                hoursWorked=hours_worked,
                fullDay=full_day,
            )
        )
    return list_


@router.post("/{id_}", response_model=schemas.EmployeeAttendance)
def save_employee_attendance(
    id_: uuid.UUID,
    data: schemas.EmployeeAttendance,
    db: Session = Depends(get_db),
    user: UserToken = Security(get_user, scopes=["attendance"]),
):
    start_date = None
    finish_date = None
    employee: Employee = db.query(Employee).filter(Employee.id == id_).first()
    for item in data.body:
        if start_date is None:
            start_date = item.date_
        finish_date = item.date_

        attendance_type = item.attendance_type.id_
        if attendance_type != 0:
            attendance = Attendance(
                employee_id=employee.id,
                date=item.date_,
                attendance_type=attendance_type,
                user_id=user.id_,
            )
            attendance.create(db)
    db.commit()
    return {
        "startDate": start_date.strftime("%d-%b-%Y"),
        "finishDate": finish_date.strftime("%d-%b-%Y"),
        "employee": {"id": employee.id, "name": employee.name},
        "body": employee_attendance(employee, start_date, finish_date, db),
    }