from wtforms import SubmitField, StringField, HiddenField, SelectField, validators
from flask import request, render_template, redirect
from flask_wtf import FlaskForm
from flask_login import login_required, current_user
from main import db, app, ma
from sqlalchemy import func, Sequence
from sqlalchemy.exc import SQLAlchemyError
from status import st, Status

################################################################################
# Class describing Owned in the database, and via sqlalchemy, connected to the DB as well
################################################################################
class Owned(db.Model):
    id = db.Column(db.Integer, db.Sequence('owned_id_seq'), primary_key=True )
    name = db.Column(db.String(50), unique=True, nullable=False)

    def __repr__(self):
        return f"<id: {self.id}, name: {self.name}>"

################################################################################
# Helper class that inherits a .dump() method to turn class Owned into json / useful in jinja2
################################################################################
class OwnedSchema(ma.SQLAlchemyAutoSchema):
    class Meta: model = Owned

################################################################################
# Helper class that defines a form for owned, used to make html <form>, with field validation (via wtforms)
################################################################################
class OwnedForm(FlaskForm):
    id = HiddenField()
    name = StringField('Name:', [validators.DataRequired()])
    submit = SubmitField('Save' )
    delete = SubmitField('Delete' )

################################################################################
# Routes for owned data
#
# /owneds -> GET only -> prints out list of all owneds
################################################################################
@app.route("/owneds", methods=["GET"])
@login_required
def owneds():
    objects = Owned.query.order_by('id').all()
    return render_template("show_id_name.html", objects=objects, page_title='Show All Ownership types', url_base='owned', alert=st.GetAlert(), message=st.GetMessage() )

################################################################################
# /owned -> GET/POST -> creates a new owned type and when created, takes you back to /owneds
################################################################################
@app.route("/owned", methods=["GET", "POST"])
@login_required
def new_owned():
    form = OwnedForm(request.form)
    page_title='Create new Ownership Type'
    if 'name' not in request.form:
        return render_template("edit_id_name.html", form=form, page_title=page_title )
    else:
        owned = Owned( name=request.form["name"] )
        try:
            db.session.add(owned)
            db.session.commit()
            st.SetMessage( f"Created new Owned Type (id={owned.id})" )
            return redirect( '/owneds' )
        except SQLAlchemyError as e:
            st.SetAlert( "danger" )
            st.SetMessage( f"<b>Failed to add Ownership type:</b>&nbsp;{e.orig}" )
            return render_template("edit_id_name.html", form=form, page_title=page_title, alert=st.GetAlert(), message=st.GetMessage() )

################################################################################
# /owned/<id> -> GET/POST(save or delete) -> shows/edits/delets a single owned
################################################################################
@app.route("/owned/<id>", methods=["GET", "POST"])
@login_required
def owned(id):
    ### DDP: should this be request.form or request.values?
    form = OwnedForm(request.form)
    if request.method == 'POST' and form.validate():
        try:
            owned = Owned.query.get(id)
            if 'delete' in request.form:
                st.SetMessage( f"Successfully deleted (id={owned.id}, name={owned.name})" )
                owned = Owned.query.filter(Owned.id==id).delete()
            if 'submit' in request.form:
                owned.name = request.form['name']
                st.SetMessage( f"Successfully Updated Owned (id={id})" )
            db.session.commit()
            return redirect( '/owneds' )
        except SQLAlchemyError as e:
            st.SetAlert( "danger" )
            st.SetMessage( f"<b>Failed to modify Ownership Type:</b>&nbsp;{e.orig}" )
            return render_template("edit_id_name.html", form=form, page_title='Edit Ownership Type', alert=st.GetAlert(), message=st.GetMessage() )
    else:
        obj = Owned.query.get(id)
        form = OwnedForm(request.values, obj=obj)
    return render_template("edit_id_name.html", form=form, page_title='Edit Owned Type' )

################################################################################
# Gets the Owned matching id from DB, helper func in jinja2 code to show books
################################################################################
def GetOwnedById(id):
    return Owned.query.get(id).name