from flask import flash, redirect, render_template, request, url_for
from flask_security import auth_required, current_user, roles_accepted, roles_required

from . import app, db
from .model_dependent_funs import lastSemester, setUserActiveSemester
from .models import Semester


@app.context_processor
def util_processor():
    active_semester = current_user.active_semester
    if active_semester != lastSemester():
        flash(f"You are in the old semester {current_user.active_semester.repr()}!", "warning")

    return dict(active_semester=active_semester, current_user=current_user)


@app.route("/")
def index():
    if current_user.has_role("admin"):
        return redirect(url_for("index") + "admin")
    elif current_user.has_role("assistant"):
        return redirect(url_for("index") + "assistant")
    else:
        return redirect(url_for("security.login"))


@app.route("/set_semester")
@auth_required()
def set_semester():
    try:
        semesterId = int(request.args.get("semester_id"))
    except Exception as ex:
        flash(str(ex), "error")
    else:
        semester = db.session.get(Semester, semesterId)
        setUserActiveSemester(semester)

    red = request.referrer or url_for("index")
    return redirect(red)


@app.route("/admin/docs")
@roles_required("admin")
def admin_docs():
    return render_template("docs/admin.html")


@app.route("/assistant/docs")
@roles_accepted("admin", "assistant")
def assistant_docs():
    return render_template("docs/assistant.html")