import Model from 'travis/models/model';
import Job from 'travis/models/job';
import Ember from 'ember';
import config from 'travis/config/environment';

var Request = Ember.Object.extend({
  HEADERS: {
    accept: 'application/json; chunked=true; version=2, text/plain; version=2'
  },

  run() {
    return this.get('ajax').ajax("/jobs/" + this.id + "/log?cors_hax=true", 'GET', {
      dataType: 'text',
      headers: this.HEADERS,
      success: (body, status, xhr) => {
        return Ember.run(this, function() {
          return this.handle(body, status, xhr);
        });
      }
    });
  },

  handle(body, status, xhr) {
    if (config.pro) {
      this.log.set('token', xhr.getResponseHeader('X-Log-Access-Token'));
    }
    if (xhr.status === 204) {
      return $.ajax({
        url: this.redirectTo(xhr),
        type: 'GET',
        success: this.handlers.text
      });
    } else if (this.isJson(xhr, body)) {
      return this.handlers.json(body);
    } else {
      return this.handlers.text(body);
    }
  },

  redirectTo(xhr) {
    // Firefox can't see the Location header on the xhr response due to the wrong
    // status code 204. Should be some redirect code but that doesn't work with CORS.
    return xhr.getResponseHeader('Location');
  },

  isJson(xhr, body) {
    // Firefox can't see the Content-Type header on the xhr response due to the wrong
    // status code 204. Should be some redirect code but that doesn't work with CORS.
    var type = xhr.getResponseHeader('Content-Type') || '';
    return type.indexOf('json') > -1;
  }
});

var LogModel = Ember.Object.extend({
  version: 0,
  isLoaded: false,
  length: 0,
  hasContent: Ember.computed.gt('parts.length', 0),

  fetchMissingParts(partNumbers, after) {
    var data;
    if (this.get('notStarted')) {
      return;
    }
    data = {};
    if (partNumbers) {
      data['part_numbers'] = partNumbers;
    }
    if (after) {
      data['after'] = after;
    }
    return this.get('ajax').ajax("/jobs/" + (this.get('job.id')) + "/log", 'GET', {
      dataType: 'json',
      headers: {
        accept: 'application/json; chunked=true; version=2'
      },
      data: data,
      success: (function(_this) {
        return function(body, status, xhr) {
          return Ember.run(_this, function() {
            var i, len, part, parts, results;
            if (parts = body.log.parts) {
              results = [];
              for (i = 0, len = parts.length; i < len; i++) {
                part = parts[i];
                results.push(this.append(part));
              }
              return results;
            }
          });
        };
      })(this)
    });
  },

  parts: function() {
    return Ember.ArrayProxy.create({
      content: []
    });
  }.property(),

  clearParts() {
    var parts;
    parts = this.get('parts');
    return parts.set('content', []);
  },

  fetch() {
    var handlers, id;
    if (Log.DEBUG) {
      console.log('log model: fetching log');
    }
    this.clearParts();
    handlers = {
      json: (function(_this) {
        return function(json) {
          if (json['log']['removed_at']) {
            _this.set('removed', true);
          }
          return _this.loadParts(json['log']['parts']);
        };
      })(this),
      text: (function(_this) {
        return function(text) {
          return _this.loadText(text);
        };
      })(this)
    };
    if (id = this.get('job.id')) {
      return Request.create({
        id: id,
        handlers: handlers,
        log: this,
        ajax: this.get('ajax')
      }).run();
    }
  },

  clear() {
    this.clearParts();
    return this.runOnClear();
  },

  runOnClear() {
    var callback;
    if (callback = this.get('onClearCallback')) {
      return callback();
    }
  },

  onClear(callback) {
    return this.set('onClearCallback', callback);
  },

  append(part) {
    if (this.get('parts').isDestroying || this.get('parts').isDestroyed) {
      return;
    }
    return this.get('parts').pushObject(part);
  },

  loadParts(parts) {
    var i, len, part;
    console.log('log model: load parts');
    for (i = 0, len = parts.length; i < len; i++) {
      part = parts[i];
      this.append(part);
    }
    return this.set('isLoaded', true);
  },

  loadText(text) {
    console.log('log model: load text');
    this.append({
      number: 1,
      content: text,
      final: true
    });
    return this.set('isLoaded', true);
  }
});

export default LogModel;