"use strict";

import show_help from '../help.mjs';
import { decode_payload } from '../ttn-app-server/DecodePayload.mjs';
import path from 'path';

import {
	unnormalise_lat,
	unnormalise_lng,
} from '../../common/Normalisers.mjs'

// HACK
import awilix from 'awilix';

export default async function(c) {
	let { ansi: a, log: l, settings, DatasetFetcher } = c.cradle;
	
	// 2: CLI Argument Parsing
	let args = process.argv.slice(2); // Slice out the node binary name and the filename
	let extras = [];
	
	for(let i = 0; i < args.length; i++) {
		if(!args[i].startsWith("-")) {
			extras.push(args[i]);
			continue;
		}
		
		switch(args[i]) {
			case "--help":
			case "-h":
				show_help(c.cradle);
				process.exit();
				break;
			
			case "--version":
			case "-v":
				console.log(program.version);
				break;
				
			case "--ai-unified":
				settings.ai.mode = "unified";
				break;
			case "--ai-split":
				settings.ai.mode = "split";
				break;
			
			// Add more arguments here
		}
	}

	// 3: Environment Variable Parsing

	// process.env.XYZ

	// 4: Run
	if(extras.length < 1) {
		console.error(`${a.fred}${a.hicol}Error: No subcommand specified.${a.reset}`);
		show_help(c.cradle);
		process.exit();
	}

	l.log_e(`${a.fgreen}${a.hicol}*** LoRaWAN Signal Mapper ***${a.reset}`);

	switch(extras[0]) {
		case "ttn-app-server":
			l.log(`${a.fgreen}${a.hicol}Starting The Things Network application server${a.reset}`);
			
			let app_server = c.resolve("TTNAppServer");
			await app_server.run();
			break;
		
		case "decode-test":
			l.log(`${a.fgreen}${a.hicol}Decoding message${a.reset}`);
			if(process.argv.length < 4) {
				l.error("Error: No message specified. Specify the message to decode in single quotes directly after 'decode-test'.");
				process.exit(1);
			}
			l.log("Input: ", process.argv[3]);
			l.log("Output: ", decode_payload(process.argv[3]));
			break;
		
		case "process-data":
			l.log(`${a.fgreen}${a.hicol}Processing microSD card data${a.reset}`);
			if(process.argv.length < 4) {
				l.error("Error: No filename specified. Do so by specifying a filename after the 'process-data' subcommand.");
				process.exit(1);
			}
			
			let filepath = process.argv[3];
			
			let data_processor = c.cradle.DataProcessor;
			await data_processor.process(filepath);
			l.log("Processing complete!");
			
			break;
		
		case "train-ai":
			// Do ninja dynamic import
			// This avoid loading TensorFlow when it's not needed, as it causes 
			// a crash if the AVX2 CPU instruction set isn't available for some 
			// reason. Hrm.
			let AITrainer = (await import(path.join(c.cradle.root_dir, "train-ai/AITrainer.mjs"))).default;
			
			c.register({
				AITrainer: awilix.asClass(AITrainer)
			});
			
			l.log(`${a.fgreen}${a.hicol}Training AIs${a.reset}`);
			let ai_trainer = c.cradle.AITrainer;
			switch(settings.ai.mode) {
				case "split":
					await ai_trainer.train_all();
					break;
				case "unified":
					await ai_trainer.train_unified();
					break;
			}
			break;
		
		case "geojson-debug":
			let result = [];
			for(let next_item of DatasetFetcher.fetch_all(null, true)) {
				result.push({
					type: "Feature",
					geometry: {
						type: "Point",
						coordinates: [
							unnormalise_lng(next_item.input.longitude),
							unnormalise_lat(next_item.input.latitude)
						]
					},
					properties: {
						"marker-symbol": "circle",
						"marker-color": next_item.output[0] <= 0 ? "#dd0707" : "#04a104",
						gateway: next_item.ext.gateway,
						rssi: next_item.ext.rssi_raw
					}
				})
			}
			console.log(JSON.stringify({
				type: "FeatureCollection",
				features: result
			}, null, "\t"));
			break;
		
		default:
			l.error(`Error: Subcommand '${extras[0]}' not recognised.`);
			l.error(`Perhaps you mistyped it, or it hasn't been implemented yet?`);
			l.error(`Try invoking this program with --help to see a list of supported subcommands.`);
			process.exit(1);
			break;
	}

}