"use strict";

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

export default async function(c) {
	let { ansi: a, log: l, settings } = 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;
			
			// 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(`${a.fgreen}${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":
			l.log(`${a.fgreen}${a.hicol}Training AIs${a.reset}`);
			let ai_trainer = c.cradle.AITrainer;
			await ai_trainer.train_all();
			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;
	}

}