from marshmallow import Schema, fields, validate


class TermOfDefenceSchema(Schema):
    start_date = fields.DateTime(required=True)
    end_date = fields.DateTime(required=True)
    project_supervisors = fields.List(
        fields.Integer(required=True), validate=validate.Length(3, 3)
    )
    chairman_of_committee = fields.Integer(required=True)


class ProjectSupervisorForTermOfDefenceSchema(Schema):
    id = fields.Str()
    first_name = fields.Str()
    last_name = fields.Str()


class TermOfDefenceItemSchema(Schema):
    id = fields.Integer()
    start_date = fields.DateTime()
    end_date = fields.DateTime()
    members_of_committee = fields.List(
        fields.Nested(ProjectSupervisorForTermOfDefenceSchema)
    )
    chairman_of_committee = fields.Integer()


class TermOfDefenceListSchema(Schema):
    term_of_defences = fields.List(fields.Nested(TermOfDefenceItemSchema))


class StudentDataItemAssignedGroupSchema(Schema):
    index = fields.Integer()
    first_name = fields.Str()
    last_name = fields.Str()


class GroupDataItemAssignedGroupSchema(Schema):
    name = fields.Str()
    students = fields.List(fields.Nested(StudentDataItemAssignedGroupSchema))


class AssignedGroupToTermOfDefenceDataItemSchema(TermOfDefenceItemSchema):
    group = fields.Nested(GroupDataItemAssignedGroupSchema)


class AssignedGroupToTermOfDefenceListSchema(Schema):
    term_of_defences = fields.List(
        fields.Nested(AssignedGroupToTermOfDefenceDataItemSchema)
    )


class ProjectSupervisorForTemporaryAvailabilitySchema(Schema):
    id = fields.Str()
    first_name = fields.Str()
    last_name = fields.Str()


class TemporaryAvailabilityItemSchema(Schema):
    start_date = fields.DateTime()
    end_date = fields.DateTime()
    project_supervisor = fields.Nested(ProjectSupervisorForTemporaryAvailabilitySchema)


class TemporaryAvailabilityListSchema(Schema):
    temporary_availabilities = fields.List(
        fields.Nested(TemporaryAvailabilityItemSchema)
    )