import { reactive, watch } from 'vue';

import vista from './vista.mjs';
import cookie from './cookie.mjs';
import { lab_parse, lab_reparse_results, measurement_parse } from './reportparser.mjs';

export const state = reactive(cookie.get('state') ? JSON.parse(cookie.get('state')) : {});
if((!state.secret) && (cookie.get('secret'))) state.resources = cookie.get('secret');
if((!state.cid) && (cookie.get('cid'))) state.resources = cookie.get('cid');
if((!state.host) && (cookie.get('host'))) state.resources = cookie.get('host');
if((!state.resources) && (cookie.get('vista.resources'))) state.resources = cookie.get('vista.resources');
if((!state.practitioner) && (cookie.get('vista.practitioner'))) state.practitioner = JSON.parse(cookie.get('vista.practitioner'));
watch(state, value => cookie.set('state', JSON.stringify(value), 45), { immediate: true, deep: true });

function RPCError(type, ...args) {
	this.name = type;
	this.message = args;
}
RPCError.prototype = Object.create(Error.prototype);

export function logged(fn, name) {
	return async function(...args) {
		var res = await fn(...args);
		console.log(name, ...args, res);
		return res;
	}
}

export function unwrapped(fn) {
	return async function(...args) {
		var res = await fn(...args);
		if(res.error) throw new RPCError(res.error.type, ...res.error.args);
		else return res.result;
	}
}

export function memoized(fn) {
	var cache = {};
	return async function(...args) {
		var key = JSON.stringify(args);
		return cache.hasOwnProperty(key) ? cache[key] : (cache[key] = await fn(...args));
	}
}

export function caretseparated(fn, columns=null) {
	return async function(...args) {
		if(columns) return (await fn(...args)).map(function(row) {
			row = row.split('^');
			for(var i = columns.length - 1; i >= 0; --i) if(columns[i]) row[columns[i]] = row[i];
			return row;
		});
		else return (await fn(...args)).map(function(row) { return row.split('^'); });
	}
}

export function caretseparated1(fn, columns=null) {
	return async function(...args) {
		var res = (await fn(...args)).split('^');
		if(columns) for(var i = columns.length - 1; i >= 0; --i) if(columns[i]) res[columns[i]] = res[i];
		return res;
	}
}

export function labreportparsed(fn) {
	return async function(...args) {
		return lab_parse(await fn(...args));
	}
}

export function tabulated(fn, mapping) {
	return async function(...args) {
		var res = (await fn(...args)).map(function(row) { return row.slice(); }), nrow = res.length;
		for(var i = 0; i < nrow; ++i) {
			var row = res[i], ncol = row.length;
			for(var j = 0; j < ncol; ++j) if(mapping.hasOwnProperty(j)) row[mapping[j]] = row[j];
			res.push()
		}
		return res;
	}
}

export function Client(cid, secret) {
	var heartbeat = null;

	this.secret = secret;
	this.cid = cid;

	this.close = function() {
		if(heartbeat) window.clearInterval(heartbeat);
		return vista.close(cid);
	};
	this.call = (method, ...params) => vista.call(cid, method, ...params);
	this.callctx = (context, method, ...params) => vista.callctx(cid, context, method, ...params);
	this.heartbeat = async function(interval=null) {
		if(!interval) interval = 0.45*1000*(await this.XWB_GET_BROKER_INFO())[0];
		if(heartbeat) window.clearInterval(heartbeat);
		this.XWB_IM_HERE();
		return heartbeat = window.setInterval(this.XWB_IM_HERE, interval);
	}
	this.serverinfo = () => vista.serverinfo(cid);
	this.userinfo = () => vista.userinfo(cid);
	this.authenticate = (avcode=null) => vista.authenticate(cid, avcode);

	this.XWB_IM_HERE = unwrapped(logged(() => vista.call(cid, 'XWB_IM_HERE'), 'XWB_IM_HERE'));

	this.XUS_INTRO_MSG = memoized(unwrapped(logged(() => vista.callctx(cid, ['XUCOMMAND'], 'XUS_INTRO_MSG'), 'XUS_INTRO_MSG')));
	this.XWB_GET_BROKER_INFO = memoized(unwrapped(logged(() => vista.callctx(cid, ['XUCOMMAND'], 'XWB_GET_BROKER_INFO'), 'XWB_GET_BROKER_INFO')));
	this.XUS_GET_USER_INFO = memoized(unwrapped(logged(() => vista.call(cid, 'XUS_GET_USER_INFO'), 'XUS_GET_USER_INFO')));

	this.SDEC_RESOURCE = memoized(unwrapped(logged(() => vista.callctx(cid, ['SDECRPC'], 'SDEC_RESOURCE'), 'SDEC_RESOURCE')));
	this.SDEC_CLINLET = memoized(unwrapped(logged((...args) => vista.callctx(cid, ['SDECRPC'], 'SDEC_CLINLET', ...args), 'SDEC_CLINLET')));

	this.ORWPT_FULLSSN = memoized(caretseparated(unwrapped(logged((...args) => vista.callctx(cid, ['OR CPRS GUI CHART'], 'ORWPT_FULLSSN', ...args), 'ORWPT_FULLSSN')), ['dfn', 'name', 'date', 'pid']));
	this.ORWPT_LAST5 = memoized(caretseparated(unwrapped(logged((...args) => vista.callctx(cid, ['OR CPRS GUI CHART'], 'ORWPT_LAST5', ...args), 'ORWPT_LAST5')), ['dfn', 'name', 'date', 'pid']));
	this.ORWPT_ID_INFO = memoized(caretseparated1(unwrapped(logged((...args) => vista.callctx(cid, ['OR CPRS GUI CHART'], 'ORWPT_ID_INFO', ...args), 'ORWPT_ID_INFO')), ['pid', 'dob', 'sex', 'vet', 'sc_percentage', 'ward', 'room_bed', 'name']));
	this.ORWPT16_LOOKUP = memoized(caretseparated(unwrapped(logged((...args) => vista.callctx(cid, ['OR CPRS GUI CHART'], 'ORWPT16_LOOKUP', ...args), 'ORWPT16_LOOKUP')), ['dfn', 'name', 'pid']));
	this.ORWPT16_ID_INFO = memoized(caretseparated1(unwrapped(logged((...args) => vista.callctx(cid, ['OR CPRS GUI CHART'], 'ORWPT16_ID_INFO', ...args), 'ORWPT16_ID_INFO')), ['pid', 'dob', 'age', 'sex', 'sc_percentage', 'type', 'ward', 'room_bed', 'name']));

	this.ORQQVI_VITALS = memoized(caretseparated(unwrapped(logged((...args) => vista.callctx(cid, ['OR CPRS GUI CHART'], 'ORQQVI_VITALS', ...args), 'ORQQVI_VITALS')), ['measurement_ien', 'type', 'value', 'datetime', 'value_american', 'value_metric']));
	this.ORQQVI_VITALS_FOR_DATE_RANGE = memoized(caretseparated(unwrapped(logged((...args) => vista.callctx(cid, ['OR CPRS GUI CHART'], 'ORQQVI_VITALS_FOR_DATE_RANGE', ...args), 'ORQQVI_VITALS_FOR_DATE_RANGE')), ['measurement_ien', 'type', 'value', 'datetime']));

	this.GMV_EXTRACT_REC = memoized(async (dfn, oredt, orsdt) => measurement_parse(await unwrapped(logged((...args0) => vista.callctx(cid, ['OR CPRS GUI CHART'], 'GMV_EXTRACT_REC', args0.join('^')), 'GMV_EXTRACT_REC'))(dfn, oredt, '', orsdt)));

	this.ORWLRR_INTERIM = memoized(labreportparsed(unwrapped(logged((...args) => vista.callctx(cid, ['OR CPRS GUI CHART'], 'ORWLRR_INTERIM', ...args), 'ORWLRR_INTERIM'))));
	this.ORWLRR_INTERIM_RESULTS = memoized(async (...args) => lab_reparse_results(await this.ORWLRR_INTERIM(...args)));

	return this;
}
Client._registry = {};

Client.fromID = function(cid, secret) {
	if(Client._registry[cid]) return Client._registry[cid];
	return Client._registry[cid] = new Client(cid, secret);
};

Client.fromScratch = async function(secret, host='vista.northport.med.va.gov', port=19209) {
	var data = await vista.connect(secret, host, port);
	if(data.result) return Client.fromID(data.result, secret);
};

Client.fromCookie = async function(secret, defaulthost='vista.northport.med.va.gov:19209') {
	if(!secret) secret = state.secret;
	if(secret) {
		var host = state.host;
		host = (host || defaulthost).split(':');
		if(secret != state.secret) {
			console.log('Using new secret', secret);
			var client = await Client.fromScratch(secret, host[0], host[1]);
			if(client) {
				state.host = host.join(':');
				state.secret = secret;
				state.cid = client.cid;
				console.log('Established connection', client.cid);
				return client;
			} else {
				delete state.secret;
				delete state.cid;
				console.log('Failed to connect');
				return null;
			}
		} else if(!state.cid) {
			console.log('Using saved secret', secret);
			var client = await Client.fromScratch(secret, host[0], host[1]);
			if(client) {
				state.host = host.join(':');
				state.secret = secret;
				state.cid = client.cid;
				console.log('Established connection', client.cid);
				return client;
			} else {
				delete state.secret;
				delete state.cid;
				console.log('Failed connection');
				return null;
			}
		} else {
			console.log('Using saved secret and connection', secret);
			var cid = state.cid;
			var client = Client.fromID(cid, secret);
			if((await vista.call(cid, 'XWB_IM_HERE')).result == '1') {
				var server = await client.serverinfo();
				if((host[0] == server.result.host) && (host[1] == server.result.port)) {
					state.host = host.join(':');
					return client;
				} else console.log('Rejecting previous connection to different server', server);
			}
			delete state.cid;
			return await Client.fromCookie(secret, host.join(':'));
		}
	}
};

export default window.vistax = {
	state, RPCError, Client, connect: Client.fromCookie
};