var helper = require('./helper');
var log = require('./logger').create('reporter');
var MultiReporter = require('./reporters/Multi');
var baseReporterDecoratorFactory = require('./reporters/Base').decoratorFactory;

var createErrorFormatter = function(basePath, urlRoot) {
  var URL_REGEXP = new RegExp('http:\\/\\/[^\\/]*' + urlRoot.replace(/\//g, '\\/') +
                              '(base|absolute)([^\\?\\s]*)(\\?[0-9]*)?', 'g');

  return function(msg, indentation) {
    // remove domain and timestamp from source files
    // and resolve base path / absolute path urls into absolute path
    msg = (msg || '').replace(URL_REGEXP, function(full, prefix, path) {
      if (prefix === 'base') {
        return basePath + path;
      } else if (prefix === 'absolute') {
        return path;
      }
    });

    // indent every line
    if (indentation) {
      msg = indentation + msg.replace(/\n/g, '\n' + indentation);
    }

    return msg + '\n';
  };
};

createErrorFormatter.$inject = ['config.basePath', 'config.urlRoot'];


var createReporters = function(names, config, emitter, injector) {
  var errorFormatter = createErrorFormatter(config.basePath, config.urlRoot);
  var reporters = [];

  // TODO(vojta): instantiate all reporters through DI
  names.forEach(function(name) {
    if (['dots', 'progress'].indexOf(name) !== -1) {
      var Cls = require('./reporters/' + helper.ucFirst(name) + (config.colors ? 'Color' : ''));
      return reporters.push(new Cls(errorFormatter, config.reportSlowerThan));
    }

    var locals = {
      baseReporterDecorator: ['factory', baseReporterDecoratorFactory],
      formatError: ['factory', createErrorFormatter]
    };

    try {
      reporters.push(injector.createChild([locals], ['reporter:' + name]).get('reporter:' + name));
    } catch(e) {
      if (e.message.indexOf('No provider for "reporter:' + name + '"') !== -1) {
        log.warn('Can not load "%s", it is not registered!\n  ' +
                 'Perhaps you are missing some plugin?', name);
      } else {
        log.warn('Can not load "%s"!\n  ' + e.stack, name);
      }
    }
  });

  // bind all reporters
  reporters.forEach(function(reporter) {
    emitter.bind(reporter);
  });

  return new MultiReporter(reporters);
};

createReporters.$inject = ['config.reporters', 'config', 'emitter', 'injector'];


// PUBLISH
exports.createReporters = createReporters;