"""Authenticated reminder API routes."""

from datetime import datetime
import flask
import uuid

from api.security import jsonObject, requireUser
from modules.reminders import service


def registerRoutes(app):
    @app.route("/api/reminders", methods=["GET"])
    @requireUser()
    def api_listReminders():
        includeFinished = flask.request.args.get("include_finished", "false").lower()
        includeFinished = includeFinished in {"1", "true", "yes"}
        reminders = service.listReminders(
            flask.g.user_uuid,
            includeFinished=includeFinished,
            limit=flask.request.args.get("limit", 50),
        )
        return flask.jsonify(
            {"reminders": [_serializeReminder(item) for item in reminders]}
        ), 200

    @app.route("/api/reminders", methods=["POST"])
    @requireUser()
    def api_createReminder():
        data = jsonObject()
        if data is None:
            return flask.jsonify({"error": "JSON object required"}), 400
        try:
            reminder = service.createReminder(
                flask.g.user_uuid,
                data.get("message"),
                data.get("run_at"),
                data.get("timezone") or _userTimezone(),
                recurrence=data.get("recurrence"),
            )
        except ValueError as error:
            return flask.jsonify({"error": str(error)}), 400
        return flask.jsonify(_serializeReminder(reminder)), 201

    @app.route("/api/reminders/<reminderID>", methods=["DELETE"])
    @requireUser()
    def api_cancelReminder(reminderID):
        try:
            reminder = service.cancelReminder(flask.g.user_uuid, reminderID)
        except (TypeError, ValueError):
            reminder = None
        if not reminder:
            return flask.jsonify({"error": "active reminder not found"}), 404
        return flask.jsonify(_serializeReminder(reminder)), 200


def _userTimezone():
    from core import users

    return users.getUserTimezone(flask.g.user_uuid) or "UTC"


def _serializeReminder(reminder):
    serialized = {}
    for key, value in reminder.items():
        if isinstance(value, datetime):
            serialized[key] = value.isoformat()
        elif isinstance(value, uuid.UUID):
            serialized[key] = str(value)
        else:
            serialized[key] = value
    return serialized