var assert = require('assert');
var sinon = require('sinon');
var loopback = require('../index');
var Role = loopback.Role;
var RoleMapping = loopback.RoleMapping;
var User = loopback.User;
var Application = loopback.Application;
var ACL = loopback.ACL;

function checkResult(err, result) {
  // console.log(err, result);
  assert(!err);
}

describe('role model', function() {
  var ds;

  beforeEach(function() {
    ds = loopback.createDataSource({connector: 'memory'});
    // Re-attach the models so that they can have isolated store to avoid
    // pollutions from other tests
    User.attachTo(ds);
    Role.attachTo(ds);
    RoleMapping.attachTo(ds);
  });

  it('should define role/role relations', function() {
    Role.create({name: 'user'}, function(err, userRole) {
      Role.create({name: 'admin'}, function(err, adminRole) {
        userRole.principals.create({principalType: RoleMapping.ROLE, principalId: adminRole.id}, function(err, mapping) {
          Role.find(function(err, roles) {
            assert.equal(roles.length, 2);
          });
          RoleMapping.find(function(err, mappings) {
            assert.equal(mappings.length, 1);
            assert.equal(mappings[0].principalType, RoleMapping.ROLE);
            assert.equal(mappings[0].principalId, adminRole.id);
          });
          userRole.principals(function(err, principals) {
            assert.equal(principals.length, 1);
          });
          userRole.roles(function(err, roles) {
            assert.equal(roles.length, 1);
          });
        });
      });
    });

  });

  it('should define role/user relations', function() {

    User.create({name: 'Raymond', email: 'x@y.com', password: 'foobar'}, function(err, user) {
      // console.log('User: ', user.id);
      Role.create({name: 'userRole'}, function(err, role) {
        role.principals.create({principalType: RoleMapping.USER, principalId: user.id}, function(err, p) {
          Role.find(function(err, roles) {
            assert(!err);
            assert.equal(roles.length, 1);
            assert.equal(roles[0].name, 'userRole');
          });
          role.principals(function(err, principals) {
            assert(!err);
            // console.log(principals);
            assert.equal(principals.length, 1);
            assert.equal(principals[0].principalType, RoleMapping.USER);
            assert.equal(principals[0].principalId, user.id);
          });
          role.users(function(err, users) {
            assert(!err);
            assert.equal(users.length, 1);
            assert.equal(users[0].id, user.id);
          });
        });
      });
    });

  });

  it('should automatically generate role id', function() {

    User.create({name: 'Raymond', email: 'x@y.com', password: 'foobar'}, function(err, user) {
      // console.log('User: ', user.id);
      Role.create({name: 'userRole'}, function(err, role) {
        assert(role.id);
        role.principals.create({principalType: RoleMapping.USER, principalId: user.id}, function(err, p) {
          assert(p.id);
          assert.equal(p.roleId, role.id);
          Role.find(function(err, roles) {
            assert(!err);
            assert.equal(roles.length, 1);
            assert.equal(roles[0].name, 'userRole');
          });
          role.principals(function(err, principals) {
            assert(!err);
            // console.log(principals);
            assert.equal(principals.length, 1);
            assert.equal(principals[0].principalType, RoleMapping.USER);
            assert.equal(principals[0].principalId, user.id);
          });
          role.users(function(err, users) {
            assert(!err);
            assert.equal(users.length, 1);
            assert.equal(users[0].id, user.id);
          });
        });
      });
    });

  });

  it('should support getRoles() and isInRole()', function() {
    User.create({name: 'Raymond', email: 'x@y.com', password: 'foobar'}, function(err, user) {
      // console.log('User: ', user.id);
      Role.create({name: 'userRole'}, function(err, role) {
        role.principals.create({principalType: RoleMapping.USER, principalId: user.id}, function(err, p) {
          // Role.find(console.log);
          // role.principals(console.log);
          Role.isInRole('userRole', {principalType: RoleMapping.USER, principalId: user.id}, function(err, exists) {
            assert(!err && exists === true);
          });

          Role.isInRole('userRole', {principalType: RoleMapping.APP, principalId: user.id}, function(err, exists) {
            assert(!err && exists === false);
          });

          Role.isInRole('userRole', {principalType: RoleMapping.USER, principalId: 100}, function(err, exists) {
            assert(!err && exists === false);
          });

          Role.getRoles({principalType: RoleMapping.USER, principalId: user.id}, function(err, roles) {
            assert.equal(roles.length, 3); // everyone, authenticated, userRole
            assert(roles.indexOf(role.id) >= 0);
            assert(roles.indexOf(Role.EVERYONE) >= 0);
            assert(roles.indexOf(Role.AUTHENTICATED) >= 0);
          });
          Role.getRoles({principalType: RoleMapping.APP, principalId: user.id}, function(err, roles) {
            assert.equal(roles.length, 2);
            assert(roles.indexOf(Role.EVERYONE) >= 0);
            assert(roles.indexOf(Role.AUTHENTICATED) >= 0);
          });
          Role.getRoles({principalType: RoleMapping.USER, principalId: 100}, function(err, roles) {
            assert.equal(roles.length, 2);
            assert(roles.indexOf(Role.EVERYONE) >= 0);
            assert(roles.indexOf(Role.AUTHENTICATED) >= 0);
          });
          Role.getRoles({principalType: RoleMapping.USER, principalId: null}, function(err, roles) {
            assert.equal(roles.length, 2);
            assert(roles.indexOf(Role.EVERYONE) >= 0);
            assert(roles.indexOf(Role.UNAUTHENTICATED) >= 0);
          });
        });
      });
    });

  });

  it('should support owner role resolver', function() {

    var Album = ds.createModel('Album', {
      name: String,
      userId: Number
    }, {
      relations: {
        user: {
          type: 'belongsTo',
          model: 'User',
          foreignKey: 'userId'
        }
      }
    });

    User.create({name: 'Raymond', email: 'x@y.com', password: 'foobar'}, function(err, user) {
      Role.isInRole(Role.AUTHENTICATED, {principalType: ACL.USER, principalId: user.id}, function(err, yes) {
        assert(!err && yes);
      });
      Role.isInRole(Role.AUTHENTICATED, {principalType: ACL.USER, principalId: null}, function(err, yes) {
        assert(!err && !yes);
      });

      Role.isInRole(Role.UNAUTHENTICATED, {principalType: ACL.USER, principalId: user.id}, function(err, yes) {
        assert(!err && !yes);
      });
      Role.isInRole(Role.UNAUTHENTICATED, {principalType: ACL.USER, principalId: null}, function(err, yes) {
        assert(!err && yes);
      });

      Role.isInRole(Role.EVERYONE, {principalType: ACL.USER, principalId: user.id}, function(err, yes) {
        assert(!err && yes);
      });

      Role.isInRole(Role.EVERYONE, {principalType: ACL.USER, principalId: null}, function(err, yes) {
        assert(!err && yes);
      });

      // console.log('User: ', user.id);
      Album.create({name: 'Album 1', userId: user.id}, function(err, album1) {
        Role.isInRole(Role.OWNER, {principalType: ACL.USER, principalId: user.id, model: Album, id: album1.id}, function(err, yes) {
          assert(!err && yes);
        });
        Album.create({name: 'Album 2'}, function(err, album2) {
          Role.isInRole(Role.OWNER, {principalType: ACL.USER, principalId: user.id, model: Album, id: album2.id}, function(err, yes) {
            assert(!err && !yes);
          });
        });
      });
    });

  });

  describe('listByPrincipalType', function() {
    var sandbox;

    beforeEach(function() {
      sandbox = sinon.sandbox.create();
    });

    afterEach(function() {
      sandbox.restore();
    });

    it('should fetch all models assigned to the role', function(done) {
      var principalTypesToModels = {};
      var runs = 0;
      var mappings;

      principalTypesToModels[RoleMapping.USER] = User;
      principalTypesToModels[RoleMapping.APPLICATION] = Application;
      principalTypesToModels[RoleMapping.ROLE] = Role;

      mappings = Object.keys(principalTypesToModels);

      mappings.forEach(function(principalType) {
        var Model = principalTypesToModels[principalType];
        Model.create({name:'test', email:'x@y.com', password: 'foobar'}, function(err, model) {
          Role.create({name:'testRole'}, function(err, role) {
            role.principals.create({principalType: principalType, principalId: model.id}, function(err, p) {
              var pluralName = Model.pluralModelName.toLowerCase();
              role[pluralName](function(err, models) {
                assert(!err);
                assert.equal(models.length, 1);
                if (++runs === mappings.length) {
                  done();
                }
              });
            });
          });
        });
      });
    });

    it('should apply query', function(done) {
      User.create({name: 'Raymond', email: 'x@y.com', password: 'foobar'}, function(err, user) {
        Role.create({name: 'userRole'}, function(err, role) {
          role.principals.create({principalType: RoleMapping.USER, principalId: user.id}, function(err, p) {
            var query = {fields:['id', 'name']};
            sandbox.spy(User, 'find');
            role.users(query, function(err, users) {
              assert(!err);
              assert.equal(users.length, 1);
              assert.equal(users[0].id, user.id);
              assert(User.find.calledWith(query));
              done();
            });
          });
        });
      });
    });
  });

});