/*jshint boss: true, rhino: true, unused: true, undef: true, quotmark: double */
/*global JSHINT, readFully */

(function (args) {
  "use strict";

  var filenames = [];
  var flags     = {};
  var opts      = {};
  var globals   = {};
  var retval    = 0;
  var readf     = (typeof readFully === "function" ? readFully : readFile);

  var optstr; // arg1=val1,arg2=val2,...
  var predef; // global1=true,global2,global3,...

  args.forEach(function (arg) {
    if (arg.indexOf("--") === 0) {
      // Configuration Flags might be boolean or will be split into name and value
      if (arg.indexOf("=") > -1) {
        var o = arg.split("=");
        flags[o[0].slice(2)] = o[1];
      } else {
        flags[arg.slice(2)] = true;
      }

      return;
    } else if (arg.indexOf("=") > -1) {
      // usual rhino configuration, like "boss=true,browser=true"
      if (!optstr) {
        // First time it's the options.
        optstr = arg;
      } else {
        predef = arg;
      }

      return;
    }

    if (optstr) {
      predef = arg;
      return;
    }

    filenames.push(arg);
  });

  if (filenames.length === 0) {
    print("Usage: jshint.js file.js");
    quit(1);
  }

  // If a config flag has been provided, try and load that
  if ("config" in flags) {
    var cfgFileContent;
    try {
      cfgFileContent = readf(flags.config);
    } catch (e) {
      print("Could not read config file " + flags.config);
      quit(1);
    }

    opts = JSON.parse(cfgFileContent);
  }

  if (optstr) {
    optstr.split(",").forEach(function (arg) {
      var o = arg.split("=");
      if (o[0] === "indent") {
        opts[o[0]] = parseInt(o[1], 10);
      } else {
        opts[o[0]] = (function (ov) {
          switch (ov) {
          case "true":
            return true;
          case "false":
            return false;
          default:
            return ov;
          }
        }(o[1]));
      }
    });
  }

  globals = opts.globals || {};
  delete(opts.globals);

  if (predef) {
    predef.split(",").forEach(function (arg) {
      var global = arg.split("=");
      globals[global[0]] = global[1] === "true" ? true : false;
    });
  }

  filenames.forEach(function (name) {
    var input = readf(name);

    if (!input) {
      print("jshint: Couldn't open file " + name);
      quit(1);
    }

    if (!JSHINT(input, opts, globals)) {
      for (var i = 0, err; err = JSHINT.errors[i]; i += 1) {
        print(err.reason + " (" + name + ":" + err.line + ":" + err.character + ")");
        print("> " + (err.evidence || "").replace(/^\s*(\S*(\s+\S+)*)\s*$/, "$1"));
        print("");
      }
      retval = 2;
    }
  });

  quit(retval);
}(arguments));
