importScripts('opentally.js');

var wasm = wasm_bindgen;

async function initWasm() {
	await wasm_bindgen('opentally_bg.wasm');
	postMessage({'type': 'init', 'version': wasm.version()});
}
initWasm();

onmessage = function(evt) {
	if (evt.data.type === 'countElection') {
		// Init election
		let election = wasm.election_from_blt_Rational(evt.data.electionData);
		
		// Init results table
		postMessage({'type': 'initResultsTable', 'content': wasm.init_results_table_Rational(election)});
		
		// Init STV options
		let opts = wasm.STVOptions.new.apply(null, evt.data.optsStr);
		
		// Describe count
		postMessage({'type': 'describeCount', 'content': wasm.describe_count_Rational(evt.data.filePath, election, opts)});
		
		// Step election
		let state = wasm.CountStateRational.new(election);
		wasm.count_init_Rational(state, opts);
		
		postMessage({'type': 'updateResultsTable', 'result': wasm.update_results_table_Rational(1, state, opts)});
		postMessage({'type': 'updateStageComments', 'comment': wasm.update_stage_comments_Rational(state)});
		
		for (let stageNum = 2;; stageNum++) {
			let isDone = wasm.count_one_stage_Rational(state, opts);
			if (isDone) {
				break;
			}
			
			postMessage({'type': 'updateResultsTable', 'result': wasm.update_results_table_Rational(stageNum, state, opts)});
			postMessage({'type': 'updateStageComments', 'comment': wasm.update_stage_comments_Rational(state)});
		}
		
		postMessage({'type': 'updateResultsTable', 'result': wasm.finalise_results_table_Rational(state)});
		postMessage({'type': 'finalResultSummary', 'summary': wasm.final_result_summary_Rational(state)});
	}
}