#!/usr/bin/env node

var XLSX = require('../xlsx');
var utils = XLSX.utils;
var filename = process.argv[2];
if(!filename || filename == "-h" || filename === "--help") {
	console.log("usage:",process.argv[1],"<workbook> [sheet]");
	console.log("  when sheet = :list, print a list of sheets in the workbook");
	process.exit(0);
}
var fs = require('fs');
if(!fs.existsSync(filename)) {
	console.error("error:",filename,"does not exist!");
	process.exit(1);
}
var xlsx = XLSX.readFile(filename);
var sheetname = process.argv[3] || xlsx.SheetNames[0];
if(sheetname === ":list") {
	xlsx.SheetNames.forEach(function(x) { console.log(x); });
	process.exit(0);
}
if(xlsx.SheetNames.indexOf(sheetname)===-1) {
	console.error("Sheet", sheetname, "not found in", filename, ".  I see:");
	xlsx.SheetNames.forEach(function(x) { console.error(" - " + x); });
	process.exit(1);
}

function stringify(val) {
	switch(val.t){
		case 'n': return val.v;
		case 's': case 'str': return JSON.stringify(val.v);
		default: throw 'unrecognized type ' + val.t;
	}
}
var sheet = xlsx.Sheets[sheetname];
if(sheet["!ref"]) {
	var r = utils.decode_range(sheet["!ref"]);
	for(var R = r.s.r; R <= r.e.r; ++R) { 
		var row = [];
		for(var C = r.s.c; C <= r.e.c; ++C) {
			var val = sheet[utils.encode_cell({c:C,r:R})];
			row.push(val ? stringify(val) : "");
		}
		console.log(row.join(","));
	}
}