use crate::db::Db;
use rhailib_macros::{
    register_authorized_create_by_id_fn, register_authorized_delete_by_id_fn,
    register_authorized_get_by_id_fn,
};
use rhai::plugin::*;
use rhai::{Array, Dynamic, Engine, EvalAltResult, Module};
use std::mem;
use std::sync::Arc;

use crate::models::calendar::{AttendanceStatus, Attendee, Calendar, Event};
type RhaiCalendar = Calendar;
type RhaiEvent = Event;
type RhaiAttendee = Attendee;
use crate::db::hero::OurDB;
use crate::db::Collection;

#[export_module]
mod rhai_calendar_module {
    use super::{AttendanceStatus, RhaiAttendee, RhaiCalendar, RhaiEvent};

    // --- Attendee Builder ---
    #[rhai_fn(name = "new_attendee", return_raw)]
    pub fn new_attendee(contact_id: i64) -> Result<RhaiAttendee, Box<EvalAltResult>> {
        Ok(Attendee::new(contact_id as u32))
    }

    #[rhai_fn(name = "status", return_raw)]
    pub fn set_attendee_status(
        attendee: &mut RhaiAttendee,
        status_str: String,
    ) -> Result<RhaiAttendee, Box<EvalAltResult>> {
        let status = match status_str.to_lowercase().as_str() {
            "accepted" => AttendanceStatus::Accepted,
            "declined" => AttendanceStatus::Declined,
            "tentative" => AttendanceStatus::Tentative,
            "noresponse" => AttendanceStatus::NoResponse,
            _ => {
                return Err(EvalAltResult::ErrorSystem(
                    "Invalid Status".to_string(),
                    "Must be one of: Accepted, Declined, Tentative, NoResponse".into(),
                )
                .into())
            }
        };
        let owned = std::mem::take(attendee);
        *attendee = owned.status(status);
        Ok(attendee.clone())
    }

    // --- Event Builder ---
    #[rhai_fn(name = "new_event", return_raw)]
    pub fn new_event() -> Result<RhaiEvent, Box<EvalAltResult>> {
        Ok(Event::new())
    }

    #[rhai_fn(name = "title", return_raw)]
    pub fn set_event_title(
        event: &mut RhaiEvent,
        title: String,
    ) -> Result<RhaiEvent, Box<EvalAltResult>> {
        let owned = std::mem::take(event);
        *event = owned.title(title);
        Ok(event.clone())
    }

    #[rhai_fn(name = "description", return_raw)]
    pub fn set_event_description(
        event: &mut RhaiEvent,
        description: String,
    ) -> Result<RhaiEvent, Box<EvalAltResult>> {
        let owned = std::mem::take(event);
        *event = owned.description(description);
        Ok(event.clone())
    }

    #[rhai_fn(name = "location", return_raw)]
    pub fn set_event_location(
        event: &mut RhaiEvent,
        location: String,
    ) -> Result<RhaiEvent, Box<EvalAltResult>> {
        let owned = std::mem::take(event);
        *event = owned.location(location);
        Ok(event.clone())
    }

    #[rhai_fn(name = "add_attendee", return_raw)]
    pub fn add_event_attendee(
        event: &mut RhaiEvent,
        attendee: RhaiAttendee,
    ) -> Result<RhaiEvent, Box<EvalAltResult>> {
        let owned = std::mem::take(event);
        *event = owned.add_attendee(attendee);
        Ok(event.clone())
    }

    #[rhai_fn(name = "reschedule", return_raw)]
    pub fn reschedule_event(
        event: &mut RhaiEvent,
        start_time: i64,
        end_time: i64,
    ) -> Result<RhaiEvent, Box<EvalAltResult>> {
        let owned = std::mem::take(event);
        *event = owned.reschedule(start_time, end_time);
        Ok(event.clone())
    }

    // --- Calendar Builder ---
    #[rhai_fn(name = "new_calendar", return_raw)]
    pub fn new_calendar(name: String) -> Result<RhaiCalendar, Box<EvalAltResult>> {
        Ok(Calendar::new().name(name))
    }

    #[rhai_fn(name = "calendar_name", return_raw)]
    pub fn set_calendar_name(
        calendar: &mut RhaiCalendar,
        name: String,
    ) -> Result<RhaiCalendar, Box<EvalAltResult>> {
        let owned = std::mem::take(calendar);
        *calendar = owned.name(name);
        Ok(calendar.clone())
    }

    #[rhai_fn(name = "calendar_description", return_raw)]
    pub fn set_calendar_description(
        calendar: &mut RhaiCalendar,
        description: String,
    ) -> Result<RhaiCalendar, Box<EvalAltResult>> {
        let owned = std::mem::take(calendar);
        *calendar = owned.description(description);
        Ok(calendar.clone())
    }

    #[rhai_fn(name = "add_event", return_raw)]
    pub fn add_calendar_event(
        calendar: &mut RhaiCalendar,
        event_id: i64,
    ) -> Result<RhaiCalendar, Box<EvalAltResult>> {
        let owned = std::mem::take(calendar);
        *calendar = owned.add_event(event_id as u32);
        Ok(calendar.clone())
    }

    // --- Getters ---
    // Calendar
    #[rhai_fn(name = "get_calendar_id")]
    pub fn get_calendar_id(c: &mut RhaiCalendar) -> i64 {
        c.base.id as i64
    }
    #[rhai_fn(name = "get_calendar_name")]
    pub fn get_calendar_name(c: &mut RhaiCalendar) -> String {
        c.name.clone()
    }
    #[rhai_fn(name = "get_calendar_description")]
    pub fn get_calendar_description(c: &mut RhaiCalendar) -> Option<String> {
        c.description.clone()
    }
    #[rhai_fn(name = "get_calendar_events")]
    pub fn get_calendar_events(c: &mut RhaiCalendar) -> Array {
        c.events.iter().map(|id| Dynamic::from(*id as i64)).collect()
    }

    // Event
    #[rhai_fn(name = "get_event_id")]
    pub fn get_event_id(e: &mut RhaiEvent) -> i64 {
        e.base.id as i64
    }
    #[rhai_fn(name = "get_event_title")]
    pub fn get_event_title(e: &mut RhaiEvent) -> String {
        e.title.clone()
    }
    #[rhai_fn(name = "get_event_description")]
    pub fn get_event_description(e: &mut RhaiEvent) -> Option<String> {
        e.description.clone()
    }
    #[rhai_fn(name = "get_event_start_time")]
    pub fn get_event_start_time(e: &mut RhaiEvent) -> i64 {
        e.start_time
    }
    #[rhai_fn(name = "get_event_end_time")]
    pub fn get_event_end_time(e: &mut RhaiEvent) -> i64 {
        e.end_time
    }
    #[rhai_fn(name = "get_event_attendees")]
    pub fn get_event_attendees(e: &mut RhaiEvent) -> Array {
        e.attendees.iter().map(|a| Dynamic::from(a.clone())).collect()
    }
    #[rhai_fn(name = "get_event_location")]
    pub fn get_event_location(e: &mut RhaiEvent) -> Option<String> {
        e.location.clone()
    }

    // Attendee
    #[rhai_fn(name = "get_attendee_contact_id")]
    pub fn get_attendee_contact_id(a: &mut RhaiAttendee) -> i64 {
        a.contact_id as i64
    }
    #[rhai_fn(name = "get_attendee_status")]
    pub fn get_attendee_status(a: &mut RhaiAttendee) -> String {
        format!("{:?}", a.status)
    }
}

pub fn register_calendar_rhai_module(engine: &mut Engine) {
    let mut module = exported_module!(rhai_calendar_module);

    register_authorized_create_by_id_fn!(
        module: &mut module,
        rhai_fn_name: "save_calendar",
        resource_type_str: "Calendar",
        rhai_return_rust_type: heromodels::models::calendar::Calendar
    );
    register_authorized_get_by_id_fn!(
        module: &mut module,
        rhai_fn_name: "get_calendar",
        resource_type_str: "Calendar",
        rhai_return_rust_type: heromodels::models::calendar::Calendar
    );
    register_authorized_delete_by_id_fn!(
        module: &mut module,
        rhai_fn_name: "delete_calendar",
        resource_type_str: "Calendar",
        rhai_return_rust_type: heromodels::models::calendar::Calendar
    );

    register_authorized_create_by_id_fn!(
        module: &mut module,
        rhai_fn_name: "save_event",
        resource_type_str: "Event",
        rhai_return_rust_type: heromodels::models::calendar::Event
    );
    register_authorized_get_by_id_fn!(
        module: &mut module,
        rhai_fn_name: "get_event",
        resource_type_str: "Event",
        rhai_return_rust_type: heromodels::models::calendar::Event
    );
    register_authorized_delete_by_id_fn!(
        module: &mut module,
        rhai_fn_name: "delete_event",
        resource_type_str: "Event",
        rhai_return_rust_type: heromodels::models::calendar::Event
    );

    engine.register_global_module(module.into());
}