use ruma::{
	api::client::{
		config::{get_global_account_data, get_room_account_data, set_global_account_data, set_room_account_data},
		error::ErrorKind,
	},
	events::{AnyGlobalAccountDataEventContent, AnyRoomAccountDataEventContent},
	serde::Raw,
	OwnedUserId, RoomId,
};
use serde::Deserialize;
use serde_json::{json, value::RawValue as RawJsonValue};

use crate::{services, Error, Result, Ruma};

/// # `PUT /_matrix/client/r0/user/{userId}/account_data/{type}`
///
/// Sets some account data for the sender user.
pub(crate) async fn set_global_account_data_route(
	body: Ruma<set_global_account_data::v3::Request>,
) -> Result<set_global_account_data::v3::Response> {
	set_account_data(None, &body.sender_user, &body.event_type.to_string(), body.data.json())?;

	Ok(set_global_account_data::v3::Response {})
}

/// # `PUT /_matrix/client/r0/user/{userId}/rooms/{roomId}/account_data/{type}`
///
/// Sets some room account data for the sender user.
pub(crate) async fn set_room_account_data_route(
	body: Ruma<set_room_account_data::v3::Request>,
) -> Result<set_room_account_data::v3::Response> {
	set_account_data(
		Some(&body.room_id),
		&body.sender_user,
		&body.event_type.to_string(),
		body.data.json(),
	)?;

	Ok(set_room_account_data::v3::Response {})
}

/// # `GET /_matrix/client/r0/user/{userId}/account_data/{type}`
///
/// Gets some account data for the sender user.
pub(crate) async fn get_global_account_data_route(
	body: Ruma<get_global_account_data::v3::Request>,
) -> Result<get_global_account_data::v3::Response> {
	let sender_user = body.sender_user.as_ref().expect("user is authenticated");

	let event: Box<RawJsonValue> = services()
		.account_data
		.get(None, sender_user, body.event_type.to_string().into())?
		.ok_or_else(|| Error::BadRequest(ErrorKind::NotFound, "Data not found."))?;

	let account_data = serde_json::from_str::<ExtractGlobalEventContent>(event.get())
		.map_err(|_| Error::bad_database("Invalid account data event in db."))?
		.content;

	Ok(get_global_account_data::v3::Response {
		account_data,
	})
}

/// # `GET /_matrix/client/r0/user/{userId}/rooms/{roomId}/account_data/{type}`
///
/// Gets some room account data for the sender user.
pub(crate) async fn get_room_account_data_route(
	body: Ruma<get_room_account_data::v3::Request>,
) -> Result<get_room_account_data::v3::Response> {
	let sender_user = body.sender_user.as_ref().expect("user is authenticated");

	let event: Box<RawJsonValue> = services()
		.account_data
		.get(Some(&body.room_id), sender_user, body.event_type.clone())?
		.ok_or_else(|| Error::BadRequest(ErrorKind::NotFound, "Data not found."))?;

	let account_data = serde_json::from_str::<ExtractRoomEventContent>(event.get())
		.map_err(|_| Error::bad_database("Invalid account data event in db."))?
		.content;

	Ok(get_room_account_data::v3::Response {
		account_data,
	})
}

fn set_account_data(
	room_id: Option<&RoomId>, sender_user: &Option<OwnedUserId>, event_type: &str, data: &RawJsonValue,
) -> Result<()> {
	let sender_user = sender_user.as_ref().expect("user is authenticated");

	let data: serde_json::Value =
		serde_json::from_str(data.get()).map_err(|_| Error::BadRequest(ErrorKind::BadJson, "Data is invalid."))?;

	services().account_data.update(
		room_id,
		sender_user,
		event_type.into(),
		&json!({
			"type": event_type,
			"content": data,
		}),
	)?;

	Ok(())
}

#[derive(Deserialize)]
struct ExtractRoomEventContent {
	content: Raw<AnyRoomAccountDataEventContent>,
}

#[derive(Deserialize)]
struct ExtractGlobalEventContent {
	content: Raw<AnyGlobalAccountDataEventContent>,
}