from flask import url_for, redirect, render_template
from flask_security import login_required, current_user
from datetime import date

from ..entities import Vehicle, Service
from ..forms import CreateServiceForm, DeleteServiceForm, EditServiceForm, SelectVehicleForm
from ..tools import db_log_update, db_log_delete, get_event_line_for_vehicle, get_latest_pitstop_for_vehicle
from .. import app, db


@app.route('/service/vehicle/<int:vid>/create', methods=['GET', 'POST'])
@login_required
def create_service_for_vehicle(vid):
    vehicle = Vehicle.query.get(vid)
    if vehicle is None or vehicle not in current_user.vehicles:
        return redirect(url_for('get_account_page'))

    form = CreateServiceForm()

    data = get_event_line_for_vehicle(vehicle)
    if len(data) > 0:
        form.set_pitstop(Service(data[-1].date, data[-1].odometer, vid, 0, ''))
        form.same_odometer_allowed = type(data[-1]) != Service
    else:
        form.set_pitstop(Service(date(1970, 1, 1), 0, vid, 0, ''))
        form.same_odometer_allowed = True

    form.preinit_with_data()

    if form.validate_on_submit():
        new_service = Service(form.date.data, form.odometer.data, vid, form.costs.data, form.description.data)
        db.session.add(new_service)
        vehicle.services.append(new_service)
        db.session.commit()
        return redirect(url_for('get_pit_stops', _anchor='v' + str(vehicle.id)))

    form.process()
    return render_template('createServiceForm.html', form=form, vehicle=vehicle, messages=[])


@app.route('/service/delete/<int:sid>', methods=['GET', 'POST'])
@login_required
def delete_service_form(sid):
    service = Service.query.filter(Service.id == sid).first()
    if service is None:
        return redirect(url_for('get_pit_stops'))

    vehicle = Vehicle.query.filter(Vehicle.id == service.vehicle_id).first()
    if vehicle not in current_user.vehicles:
        return redirect(url_for('get_pit_stops'))

    form = DeleteServiceForm()
    if form.validate_on_submit():
        db.session.delete(service)
        db.session.commit()
        db_log_delete(service)
        return redirect(url_for('get_pit_stops', _anchor='v' + str(vehicle.id)))

    return render_template('deleteServiceForm.html', form=form, service=service )


@app.route('/service/edit/<int:sid>', methods=['GET', 'POST'])
@login_required
def edit_service_form(sid):
    edit_service = Service.query.get(sid)
    if edit_service is None:
        return redirect(url_for('get_pit_stops'))

    vehicle = Vehicle.query.filter(Vehicle.id == edit_service.vehicle_id).first()
    if vehicle not in current_user.vehicles:
        return redirect(url_for('get_pit_stops'))

    form = EditServiceForm()
    data = get_event_line_for_vehicle(vehicle)
    data.reverse()
    if len(data) > 0:
        last_pitstop = Service(data[-1].date, data[-1].odometer, vehicle.id, 0, '')
    else:
        last_pitstop = Service(date(1970, 1, 1), 0, vehicle.id, 0, '')
    form.set_pitstop(last_pitstop)
    form.same_odometer_allowed = True

    if form.validate_on_submit():
        edit_service.costs = form.costs.data
        edit_service.date = form.date.data
        edit_service.description = form.description.data
        edit_service.odometer = form.odometer.data
        db.session.commit()
        db_log_update(edit_service)
        return redirect(url_for('get_pit_stops', _anchor='v' + str(vehicle.id)))

    form.odometer.default = edit_service.odometer
    form.description.default = edit_service.description
    form.date.default = edit_service.date
    form.costs.default = edit_service.costs
    form.process()
    messages = {
        'date': 'Date must be between %s and %s (including).' % (str(last_pitstop.date), str(date.today())),
        'odometer': 'Odometer must be greater than %s km.' % (str(last_pitstop.odometer))
    }
    if edit_service.costs is not None and edit_service.costs > 0:
        messages['costs'] = 'Costs must be higher than 0.01 €.'
    return render_template('editServiceForm.html', form=form, vehicle=vehicle, messages=messages)


@app.route('/service/vehicle/select', methods=['GET', 'POST'])
@login_required
def select_vehicle_for_new_service():
    if len(current_user.vehicles) == 1:
        return redirect(url_for('create_service_for_vehicle', vid=current_user.vehicles[0].id))

    form = SelectVehicleForm()
    form.vehicle.choices = [(g.id, g.name) for g in current_user.vehicles]

    if form.validate_on_submit():
        return redirect(url_for('create_service_for_vehicle', vid=form.vehicle.data))

    return render_template('selectVehicle.html', form=form)