from flask import flash
from flask_admin import expose
from flask_admin.contrib.sqla.fields import QuerySelectField, QuerySelectMultipleField
from flask_security import admin_change_password, current_user
from sqlalchemy import and_
from wtforms import BooleanField, Form, RadioField, SelectField, StringField
from wtforms.fields import DateField
from wtforms.validators import NumberRange

from advlabdb import assistantSpace, db
from advlabdb.customClasses import SecureAssistantBaseView, SecureAssistantModelView
from advlabdb.exceptions import DataBaseException, ModelViewException
from advlabdb.models import (
    Appointment,
    Assistant,
    Experiment,
    ExperimentMark,
    Group,
    GroupExperiment,
    Part,
    PartStudent,
    Program,
    Role,
    Semester,
    SemesterExperiment,
    Student,
    User,
)
from advlabdb.utils import (
    flashRandomPassword,
    initActiveSemesterMenuLinks,
    randomPassword,
    userActiveSemester,
)


class AssistantAppointmentView(SecureAssistantModelView):
    can_edit = True

    column_list = [
        "date",
        "special",
        "group_experiment.semester_experiment.experiment",
        "group_experiment.group",
        "group_experiment.group.part_students",
    ]
    column_labels = {
        "group_experiment.semester_experiment.experiment": "Experiment",
        "group_experiment.group": "Group",
        "group_experiment.group.part_students": "Students",
    }

    column_editable_list = [
        "date",
    ]
    form_columns = column_editable_list

    def queryFilter(self):
        return and_(
            Appointment.group_experiment.has(
                GroupExperiment.semester_experiment.has(SemesterExperiment.semester == userActiveSemester())
            ),
            Appointment.assistant == current_user.assistant,
        )


class AssistantExperimentMarkView(SecureAssistantModelView):
    can_edit = True

    column_list = [
        "oral_mark",
        "protocol_mark",
        "final_experiment_mark",
        "group_experiment.semester_experiment.experiment",
        "part_student.student.first_name",
        "part_student.student.last_name",
        "part_student.group",
        "part_student.student.uni_email",
        "part_student.student.contact_email",
        "part_student.part",
        "assistant",
        "admin",
    ]
    column_labels = {
        "group_experiment.semester_experiment.experiment": "Experiment",
        "part_student.student.first_name": "First Name",
        "part_student.student.last_name": "Last Name",
        "part_student.group": "Group",
        "part_student.student.uni_email": "Uni Email",
        "part_student.student.contact_email": "Contact Email",
        "part_student.part": "Part",
    }
    column_descriptions = {
        "oral_mark": "Between 0 and 15",
        "protocol_mark": "Between 0 and 15",
        "final_experiment_mark": "Calculated automatically with oral and protocol marks and weightings",
        "part_student.student.contact_email": "The preferred contact email address if entered by the student",
        "assistant": "The last assistant who edited the mark",
        "admin": "The last admin who edited the mark",
    }

    column_editable_list = [
        "oral_mark",
        "protocol_mark",
    ]
    form_columns = column_editable_list

    form_args = {
        "oral_mark": {"validators": [NumberRange(0, 15)]},
        "protocol_mark": {"validators": [NumberRange(0, 15)]},
    }

    column_default_sort = [("oral_mark", False), ("protocol_mark", False)]

    def queryFilter(self):
        return ExperimentMark.group_experiment.has(
            GroupExperiment.semester_experiment.has(
                and_(
                    SemesterExperiment.semester == userActiveSemester(),
                    SemesterExperiment.assistants.any(Assistant.user == current_user),
                )
            )
        )

    def update_model(self, form, model):
        if (form.oral_mark and form.oral_mark.data != model.oral_mark) or (
            form.protocol_mark and form.protocol_mark.data != model.protocol_mark
        ):
            model.assistant = current_user.assistant

            ret = super().update_model(form, model)

            model.part_student.checkThenSetFinalPartMark()

            return ret
        else:
            # Nothing changed
            return True


class AssistantUserView(SecureAssistantModelView):
    class EditForm(Form):
        phone_number = StringField("Phone Number")
        mobile_phone_number = StringField("Mobile Phone Number")

        building = StringField("Building")
        room = StringField("Room")

        generate_new_password = BooleanField("Generate new random password", default=False)

    form = EditForm

    can_edit = True
    column_display_actions = True

    column_sortable_list = []

    column_list = [
        "email",
        "phone_number",
        "mobile_phone_number",
        "building",
        "room",
        "assistant.semester_experiments",
    ]
    column_labels = {
        "assistant.semester_experiments": "Semester Experiments",
    }

    def queryFilter(self):
        return User.id == current_user.id

    def on_model_change(self, form, model, is_created):
        if form.generate_new_password.data:
            password = randomPassword()
            flashRandomPassword(password)

            admin_change_password(model, password, notify=False)  # Password is automatically hashed with this function


class AssistantDocsView(SecureAssistantBaseView):
    @expose()
    def index(self):
        return self.render("docs/assistant.html")


assistantSpace.add_view(
    AssistantAppointmentView(Appointment, db.session, endpoint="assistant_appointment", url="appointment")
)
assistantSpace.add_view(
    AssistantExperimentMarkView(ExperimentMark, db.session, endpoint="assistant_experimentmark", url="experimentmark")
)
assistantSpace.add_view(AssistantUserView(User, db.session, endpoint="assistant_user", url="user"))
assistantSpace.add_view(AssistantDocsView(name="Docs", endpoint="assistant_docs", url="docs"))

initActiveSemesterMenuLinks(assistantSpace)