# -*- coding: utf-8; -*-
################################################################################
#
#  pyCOREPOS -- Python Interface to CORE POS
#  Copyright © 2018 Lance Edgar
#
#  This file is part of pyCOREPOS.
#
#  pyCOREPOS is free software: you can redistribute it and/or modify it under
#  the terms of the GNU General Public License as published by the Free
#  Software Foundation, either version 3 of the License, or (at your option)
#  any later version.
#
#  pyCOREPOS is distributed in the hope that it will be useful, but WITHOUT ANY
#  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
#  FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
#  details.
#
#  You should have received a copy of the GNU General Public License along with
#  pyCOREPOS.  If not, see <http://www.gnu.org/licenses/>.
#
################################################################################
"""
CORE POS Data Model
"""

from __future__ import unicode_literals, absolute_import

import six
import sqlalchemy as sa
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import relationship
from sqlalchemy.ext.associationproxy import association_proxy


Base = declarative_base()


@six.python_2_unicode_compatible
class Department(Base):
    """
    Represents a department within the organization.
    """
    __tablename__ = 'departments'

    dept_no = sa.Column(sa.SmallInteger(), primary_key=True, autoincrement=False, nullable=False)

    dept_name = sa.Column(sa.String(length=30), nullable=True)

    dept_tax = sa.Column(sa.Boolean(), nullable=True)

    dept_fs = sa.Column(sa.Boolean(), nullable=True)

    dept_limit = sa.Column(sa.Float(), nullable=True)

    dept_minimum = sa.Column(sa.Float(), nullable=True)

    dept_discount = sa.Column(sa.Boolean(), nullable=True)

    dept_see_id = sa.Column(sa.Boolean(), nullable=True)

    modified = sa.Column(sa.DateTime(), nullable=True)

    modifiedby = sa.Column(sa.Integer(), nullable=True)

    margin = sa.Column(sa.Float(), nullable=False, default=0)

    salesCode = sa.Column(sa.Integer(), nullable=False, default=0)

    memberOnly = sa.Column(sa.SmallInteger(), nullable=False, default=0)

    def __str__(self):
        return self.dept_name or ''


@six.python_2_unicode_compatible
class Subdepartment(Base):
    """
    Represents a subdepartment within the organization.
    """
    __tablename__ = 'subdepts'
    __table_args__ = (
        sa.ForeignKeyConstraint(['dept_ID'], ['departments.dept_no']),
    )

    subdept_no = sa.Column(sa.SmallInteger(), primary_key=True, autoincrement=False, nullable=False)

    subdept_name = sa.Column(sa.String(length=30), nullable=True)

    dept_ID = sa.Column(sa.SmallInteger(), nullable=True)
    department = relationship(
        Department,
        doc="""
        Reference to the parent :class:`Department` for this subdepartment.
        """)

    def __str__(self):
        return self.subdept_name or ''


@six.python_2_unicode_compatible
class Vendor(Base):
    """
    Represents a vendor from which product may be purchased.
    """
    __tablename__ = 'vendors'
    
    vendorID = sa.Column(sa.Integer(), primary_key=True, autoincrement=False, nullable=False)

    vendorName = sa.Column(sa.String(length=50), nullable=True)

    vendorAbbreviation = sa.Column(sa.String(length=10), nullable=True)

    discountRate = sa.Column(sa.Float(), nullable=True)

    contact = relationship(
        'VendorContact',
        uselist=False, doc="""
        Reference to the :class:`VendorContact` instance for this vendor.
        """)

    phone = association_proxy(
        'contact', 'phone',
        creator=lambda p: VendorContact(phone=p))

    fax = association_proxy(
        'contact', 'fax',
        creator=lambda f: VendorContact(fax=f))

    email = association_proxy(
        'contact', 'email',
        creator=lambda e: VendorContact(email=e))

    website = association_proxy(
        'contact', 'website',
        creator=lambda w: VendorContact(website=w))

    notes = association_proxy(
        'contact', 'notes',
        creator=lambda n: VendorContact(notes=n))

    def __str__(self):
        return self.vendorName or ''


class VendorContact(Base):
    """
    A general contact record for a vendor.
    """
    __tablename__ = 'vendorContact'

    vendorID = sa.Column(sa.Integer(), sa.ForeignKey('vendors.vendorID'), primary_key=True, autoincrement=False, nullable=False)

    phone = sa.Column(sa.String(length=15), nullable=True)

    fax = sa.Column(sa.String(length=15), nullable=True)

    email = sa.Column(sa.String(length=50), nullable=True)

    website = sa.Column(sa.String(length=100), nullable=True)

    notes = sa.Column(sa.Text(), nullable=True)


@six.python_2_unicode_compatible
class Product(Base):
    """
    Represents a product, purchased and/or sold by the organization.
    """
    __tablename__ = 'products'
    __table_args__ = (
        sa.ForeignKeyConstraint(['department'], ['departments.dept_no']),
    )

    id = sa.Column(sa.Integer(), primary_key=True, autoincrement=True, nullable=False)

    upc = sa.Column(sa.String(length=13), nullable=True)

    description = sa.Column(sa.String(length=30), nullable=True)

    brand = sa.Column(sa.String(length=30), nullable=True)

    formatted_name = sa.Column(sa.String(length=30), nullable=True)

    normal_price = sa.Column(sa.Float(), nullable=True)

    pricemethod = sa.Column(sa.SmallInteger(), nullable=True)

    groupprice = sa.Column(sa.Float(), nullable=True)

    quantity = sa.Column(sa.SmallInteger(), nullable=True)

    special_price = sa.Column(sa.Float(), nullable=True)

    specialpricemethod = sa.Column(sa.SmallInteger(), nullable=True)

    specialgroupprice = sa.Column(sa.Float(), nullable=True)

    specialquantity = sa.Column(sa.SmallInteger(), nullable=True)

    start_date = sa.Column(sa.DateTime(), nullable=True)

    end_date = sa.Column(sa.DateTime(), nullable=True)

    dept_no = sa.Column('department', sa.SmallInteger(), nullable=True)

    size = sa.Column(sa.String(length=9), nullable=True)

    tax = sa.Column(sa.SmallInteger(), nullable=True)

    foodstamp = sa.Column(sa.Boolean(), nullable=True)

    scale = sa.Column(sa.Boolean(), nullable=True)

    scaleprice = sa.Column(sa.Boolean(), nullable=True, default=False)

    mixmatchcode = sa.Column(sa.String(length=13), nullable=True)

    modified = sa.Column(sa.DateTime(), nullable=True)

    # advertised = sa.Column(sa.Boolean(), nullable=True)

    tareweight = sa.Column(sa.Float(), nullable=True)

    discount = sa.Column(sa.SmallInteger(), nullable=True)

    discounttype = sa.Column(sa.SmallInteger(), nullable=True)

    line_item_discountable = sa.Column(sa.Boolean(), nullable=True)

    unitofmeasure = sa.Column(sa.String(length=15), nullable=True)

    wicable = sa.Column(sa.SmallInteger(), nullable=True)

    qttyEnforced = sa.Column(sa.Boolean(), nullable=True)

    idEnforced = sa.Column(sa.Boolean(), nullable=True)

    cost = sa.Column(sa.Float(), nullable=True, default=0)

    inUse = sa.Column(sa.Boolean(), nullable=True)

    numflag = sa.Column(sa.Integer(), nullable=True, default=0)

    subdept = sa.Column(sa.SmallInteger(), nullable=True)

    deposit = sa.Column(sa.Float(), nullable=True)

    local = sa.Column(sa.Integer(), nullable=True, default=0)

    store_id = sa.Column(sa.SmallInteger(), nullable=True, default=0)

    default_vendor_id = sa.Column(sa.Integer(), nullable=True, default=0)

    current_origin_id = sa.Column(sa.Integer(), nullable=True, default=0)

    department = relationship(
        Department,
        primaryjoin=Department.dept_no == dept_no,
        foreign_keys=[dept_no],
        doc="""
        Reference to the :class:`Department` to which the product belongs.
        """)

    vendor = relationship(
        Vendor,
        primaryjoin=Vendor.vendorID == default_vendor_id,
        foreign_keys=[default_vendor_id],
        doc="""
        Reference to the default :class:`Vendor` from which the product is obtained.
        """)

    @property
    def full_description(self):
        fields = ['brand', 'description', 'size']
        fields = [getattr(self, f) or '' for f in fields]
        fields = filter(bool, fields)
        return ' '.join(fields)

    def __str__(self):
        return self.description or ''


class Employee(Base):
    """
    Represents an employee within the organization.
    """
    __tablename__ = 'employees'

    emp_no = sa.Column(sa.SmallInteger(), primary_key=True, autoincrement=False, nullable=False)

    CashierPassword = sa.Column(sa.String(length=50), nullable=True)

    AdminPassword = sa.Column(sa.String(length=50), nullable=True)

    FirstName = sa.Column(sa.String(length=255), nullable=True)

    LastName = sa.Column(sa.String(length=255), nullable=True)

    JobTitle = sa.Column(sa.String(length=255), nullable=True)

    EmpActive = sa.Column(sa.Boolean(), nullable=True)

    frontendsecurity = sa.Column(sa.SmallInteger(), nullable=True)

    backendsecurity = sa.Column(sa.SmallInteger(), nullable=True)

    birthdate = sa.Column(sa.DateTime(), nullable=True)


@six.python_2_unicode_compatible
class MemberType(Base):
    """
    Represents a type of membership within the organization.
    """
    __tablename__ = 'memtype'

    memtype = sa.Column(sa.SmallInteger(), primary_key=True, nullable=False, default=0)

    memDesc = sa.Column(sa.String(length=20), nullable=True)

    custdataType = sa.Column(sa.String(length=10), nullable=True)

    discount = sa.Column(sa.SmallInteger(), nullable=True)

    staff = sa.Column(sa.Boolean(), nullable=True)

    ssi = sa.Column(sa.Boolean(), nullable=True)

    salesCode = sa.Column(sa.Integer(), nullable=True)

    def __str__(self):
        return self.memDesc or ""


class Customer(Base):
    """
    Represents a customer of the organization.
    """
    __tablename__ = 'custdata'

    id = sa.Column(sa.Integer(), primary_key=True, autoincrement=True, nullable=False)

    CardNo = sa.Column(sa.Integer(), nullable=True)

    personNum = sa.Column(sa.SmallInteger(), nullable=False, default=1)

    FirstName = sa.Column(sa.String(length=30), nullable=True)

    LastName = sa.Column(sa.String(length=30), nullable=True)

    CashBack = sa.Column(sa.Float(), nullable=False, default=60)

    Balance = sa.Column(sa.Float(), nullable=False, default=0)

    Discount = sa.Column(sa.SmallInteger(), nullable=True)

    MemDiscountLimit = sa.Column(sa.Float(), nullable=False, default=0)

    ChargeLimit = sa.Column(sa.Float(), nullable=False, default=0)
    
    ChargeOk = sa.Column(sa.Boolean(), nullable=False, default=False)

    WriteChecks = sa.Column(sa.Boolean(), nullable=False, default=True)

    StoreCoupons = sa.Column(sa.Boolean(), nullable=False, default=True)

    Type = sa.Column(sa.String(length=10), nullable=False, default='pc')

    memType = sa.Column(sa.SmallInteger(), nullable=True)

    staff = sa.Column(sa.Boolean(), nullable=False, default=False)

    SSI = sa.Column(sa.Boolean(), nullable=False, default=False)

    Purchases = sa.Column(sa.Float(), nullable=False, default=0)

    NumberOfChecks = sa.Column(sa.SmallInteger(), nullable=False, default=0)

    memCoupons = sa.Column(sa.Integer(), nullable=False, default=1)

    blueLine = sa.Column(sa.String(length=50), nullable=True)

    Shown = sa.Column(sa.Boolean(), nullable=False, default=True)

    LastChange = sa.Column(sa.DateTime(), nullable=False)

    member_type = relationship(
        MemberType,
        primaryjoin=MemberType.memtype == memType,
        foreign_keys=[memType],
        doc="""
        Reference to the :class:`MemberType` to which this member belongs.
        """)

    member_info = relationship(
        'MemberInfo',
        primaryjoin='MemberInfo.card_no == Customer.CardNo',
        foreign_keys=[CardNo],
        uselist=False,
        back_populates='customers',
        doc="""
        Reference to the :class:`MemberInfo` instance for this customer.
        """)


class MemberInfo(Base):
    """
    Contact info regarding a member of the organization.
    """
    __tablename__ = 'meminfo'

    card_no = sa.Column(sa.Integer(), primary_key=True, autoincrement=False, nullable=False)

    last_name = sa.Column(sa.String(length=30), nullable=True)

    first_name = sa.Column(sa.String(length=30), nullable=True)

    othlast_name = sa.Column(sa.String(length=30), nullable=True)

    othfirst_name = sa.Column(sa.String(length=30), nullable=True)

    street = sa.Column(sa.String(length=255), nullable=True)

    city = sa.Column(sa.String(length=20), nullable=True)

    state = sa.Column(sa.String(length=2), nullable=True)

    zip = sa.Column(sa.String(length=10), nullable=True)

    phone = sa.Column(sa.String(length=30), nullable=True)

    email_1 = sa.Column(sa.String(length=50), nullable=True)

    email_2 = sa.Column(sa.String(length=50), nullable=True)

    ads_OK = sa.Column(sa.Boolean(), nullable=True, default=True)

    customers = relationship(
        Customer,
        primaryjoin=Customer.CardNo == card_no,
        foreign_keys=[Customer.CardNo],
        back_populates='member_info',
        remote_side=Customer.CardNo,
        doc="""
        List of :class:`Customer` instances which are associated with this member info.
        """)

    @property
    def full_name(self):
        return '{0} {1}'.format(self.first_name or '', self.last_name or '').strip()

    def __unicode__(self):
        return self.full_name