coopgo/node_modules/gotrue-js/README.md

# gotrue-js library

[![Build Status](https://travis-ci.org/netlify/gotrue-js.svg?branch=master)](https://travis-ci.org/netlify/gotrue-js)

This is a JavaScript client library for the [GoTrue](https://github.com/netlify/gotrue) API.

It lets you create and authenticate users and is a building block for constructing
the UI for signups, password recovery, login and logout.

Play around the methods via the [demo site](https://gotruejs-playground.netlify.com/).

## Installation

```bash
yarn add gotrue-js
```

## Usage

```js
import GoTrue from 'gotrue-js';

// Instantiate the GoTrue auth client with an optional configuration

auth = new GoTrue({
  APIUrl: 'https://<your domain name>/.netlify/identity',
  audience: '',
  setCookie: false,
});
```

### GoTrue configuration

APIUrl: The absolute path of the GoTrue endpoint. To find the `APIUrl`, go to `Identity` page of your Netlify site dashboard.

audience(optional): `audience` is one of the pre-defined [JWT payload](https://tools.ietf.org/html/rfc7519#section-4.1.3) claims. It's an optional attribute which is set to be empty by default. If you were hosting your own identity service and wanted to support [multitenancy](https://en.wikipedia.org/wiki/Multitenancy), you would need `audience` to separate the users.

setCookie(optional): set to be `false` by default. If you wish to implement the `remember me` functionality, set the value to be `true`.

### Error handling

If an error occurs during the request, the promise may be rejected with an Error, `HTTPError`, `TextHTTPError`, or `JSONHTTPError`. See [micro-api-client-lib error types](https://github.com/netlify/micro-api-client-lib#class-httperror-extends-error).

## Authentication examples

### Create a new user

Create a new user with the specified email and password

```js
auth.signup(email, password);
```

Example usage:

```js
auth
  .signup(email, password)
  .then((response) => console.log('Confirmation email sent', response))
  .catch((error) => console.log("It's an error", error));
```

Example response object:

```json
{
  "id": "example-id",
  "aud": "",
  "role": "",
  "email": "example@example.com",
  "confirmation_sent_at": "2018-04-27T22:36:59.636416916Z",
  "app_metadata": { "provider": "email" },
  "user_metadata": null,
  "created_at": "2018-04-27T22:36:59.632133283Z",
  "updated_at": "2018-04-27T22:37:00.061039863Z"
}
```

Also, make sure the `Registration preferences` under `Identity settings` in your Netlify dashboard are set to `Open`.

![registration preferences](src/images/identity-settings-registration.png)

If the registration preferences is set to be `Invite only`, you'll get an error message like this:
`{code: 403, msg: 'Signups not allowed for this instance'}`

### Confirm a new user signup

This function confirms a user sign up via a unique confirmation token

```js
auth.confirm(token, remember);
```

When a new user signed up, a confirmation email will be sent to the user if `Autoconfirm` isn't turned on under the [identity settings](https://www.netlify.com/docs/identity/#adding-users).

In the email, there's a link that says "Confirm your email address".
When a user clicks on the link, it'll be redirected to the site with a [fragment identifier](https://en.wikipedia.org/wiki/Fragment_identifier) `#confirmation_token=Iyo9xHvsGVbW-9A9v4sDmQ` in the URL.

For all good reasons, the `confirmation_token` is hidden from the browser via a redirect.

If you wish to manually confirm a user using the `auth.confirm(token, remember)` method,
you can copy the link location of the email and use the `curl -I` script to get the `confirmation_token` from your terminal. E.g.,

```bash
$ curl -I https://mandrillapp.com/track/click/30002868/example.netlify.com?p=example-token
  HTTP/1.1 302 Moved Temporarily
  Server: nginx/1.12.2
  Date: Tue, 15 May 2018 21:19:13 GMT
  Content-Type: text/html; charset=utf-8
  Set-Cookie: PHPSESSID=77c421bf85fa412e5f994f28a6b30956; expires=Wed, 16-May-2018 07:19:13 GMT; path=/; secure; HttpOnly
  Expires: Thu, 19 Nov 1981 08:52:00 GMT
  Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
  Pragma: no-cache
  Set-Cookie: PHPSESSID=77c421bf85fa412e5f994f28a6b30956; expires=Wed, 16-May-2018 07:19:13 GMT; path=/; secure; httponly
  Location: https://example.netlify.com/#confirmation_token=Iyo9xHvsGVbW-9A9v4sDmQ
```

Example usage:

```js
auth
  .confirm(token, true)
  .then((response) => {
    console.log('Confirmation email sent', JSON.stringify({ response }));
  })
  .catch((error) => {
    console.log(error);
  });
```

_This method requires usage of browser window object `localStorage`. Test the usage in your front end code._

Example response object:

```json
{
  "response": {
    "api": {
      "apiURL": "https://example.netlify.com/.netlify/identity",
      "_sameOrigin": true,
      "defaultHeaders": {}
    },
    "url": "https://example.netlify.com/.netlify/identity",
    "token": {
      "access_token": "example-jwt-token",
      "token_type": "bearer",
      "expires_in": 3600,
      "refresh_token": "example-refresh_token",
      "expires_at": 1526110512000
    },
    "id": "example-id",
    "aud": "",
    "role": "",
    "email": "example@netlify.com",
    "confirmed_at": "2018-05-12T06:35:13Z",
    "confirmation_sent_at": "2018-05-12T06:34:35Z",
    "app_metadata": {
      "provider": "email"
    },
    "user_metadata": {},
    "created_at": "2018-05-12T06:34:35Z",
    "updated_at": "2018-05-12T06:34:35Z"
  }
}
```

### Login a user

Handles user login via the specified email and password

`auth.login(email, password, remember)`

Example usage:

```js
auth
  .login(email.value, password.value, true)
  .then((response) => {
    showMessage(`Success! Response: ${JSON.stringify({ response })}`, form);
  })
  .catch((error) => showMessage(`Failed :( ${JSON.stringify(error)}`, form));
```

Example response object:

```json
{
  "response": {
    "api": {
      "apiURL": "https://example.netlify.com/.netlify/identity",
      "_sameOrigin": true,
      "defaultHeaders": {}
    },
    "url": "https://example.netlify.com/.netlify/identity",
    "token": {
      "access_token": "example-jwt-token",
      "token_type": "bearer",
      "expires_in": 3600,
      "refresh_token": "example-refresh_token",
      "expires_at": 1526062471000
    },
    "id": "example-id",
    "aud": "",
    "role": "",
    "email": "example@netlify.com",
    "confirmed_at": "2018-05-04T23:57:17Z",
    "app_metadata": {
      "provider": "email"
    },
    "user_metadata": {},
    "created_at": "2018-05-04T23:57:17Z",
    "updated_at": "2018-05-04T23:57:17Z"
  }
}
```

### Request password recover email

This function sends a request to GoTrue API and triggers a password recovery email to the specified email address.
Similar to `confirmation_token`, the `recovery_token` is baked in the link of the email. You can also copy the link location from the email and run `curl -I` in the command line to grab the token.

`auth.requestPasswordRecovery(email)`

Example usage:

```js
auth
  .requestPasswordRecovery(email)
  .then((response) => console.log('Recovery email sent', { response }))
  .catch((error) => console.log('Error sending recovery mail: %o', error));
```

Example response object:
`{}`

### Recover a user account

This function recovers a user account via a recovery token

`auth.recover(recoveryToken, remember)`

Example usage:

```js
auth
  .recover(token, true)
  .then((response) => console.log('Logged in as %s', JSON.stringify({ response })))
  .catch((error) => console.log('Failed to verify recover token: %o', error));
```

Example response object:

```json
{
  "response": {
    "api": {
      "apiURL": "https://example.netlify.com/.netlify/identity",
      "_sameOrigin": true,
      "defaultHeaders": {}
    },
    "url": "https://example.netlify.com/.netlify/identity",
    "token": {
      "access_token": "example-jwt-token",
      "token_type": "bearer",
      "expires_in": 3600,
      "refresh_token": "example-refresh_token",
      "expires_at": 1526107729000
    },
    "id": "example-id",
    "aud": "",
    "role": "",
    "email": "example@netlify.com",
    "confirmed_at": "2018-05-12T05:48:49Z",
    "invited_at": "2018-05-04T23:40:00Z",
    "recovery_sent_at": "2018-05-12T05:48:13Z",
    "app_metadata": {
      "provider": "email"
    },
    "user_metadata": {},
    "created_at": "2018-05-04T23:40:00Z",
    "updated_at": "2018-05-04T23:40:00Z"
  }
}
```

### Get current user

This function returns the current user object when a user is logged in

`auth.currentUser()`

Example usage:

```js
const user = auth.currentUser();
```

Example response object:

```json
{
  "api": {
    "apiURL": "https://example.netlify.com/.netlify/identity",
    "_sameOrigin": true,
    "defaultHeaders": {}
  },
  "url": "https://example.netlify.com/.netlify/identity",
  "token": {
    "access_token": "example-jwt-token",
    "token_type": "bearer",
    "expires_in": 3600,
    "refresh_token": "example-refresh_token",
    "expires_at": 1525214326000
  },
  "id": "example-id",
  "aud": "",
  "role": "",
  "email": "example@example.com",
  "confirmed_at": "2018-05-01T19:21:00Z",
  "app_metadata": {
    "provider": "email"
  },
  "user_metadata": {},
  "created_at": "2018-05-01T19:21:00Z",
  "updated_at": "2018-05-01T19:21:00Z"
}
```

### Update a user

This function updates a user object with specified attributes

`user.update(attributes)`

Users can update their `user_metadata` field. To do this, pass an object to the `attributes.data` key with the fields you want to update. Updates to a users `app_metadata` must be performed from a secure environment, such as a [Lambda function](https://www.netlify.com/docs/functions/). For examples on updating user and app metadata, see [netlify/identity-update-user-data](https://github.com/netlify/identity-update-user-data).

Example usage:

```js
const user = auth.currentUser();

user
  .update({ email: 'example@example.com', password: 'password' })
  .then((user) => console.log('Updated user %s', user))
  .catch((error) => {
    console.log('Failed to update user: %o', error);
    throw error;
  });
```

Example response object:

```json
{
  "api": {
    "apiURL": "https://example.netlify.com/.netlify/identity",
    "_sameOrigin": true,
    "defaultHeaders": {}
  },
  "url": "https://example.netlify.com/.netlify/identity",
  "token": {
    "access_token": "example-jwt-token",
    "token_type": "bearer",
    "expires_in": 3600,
    "refresh_token": "example-refresh_token",
    "expires_at": 1525215471000
  },
  "id": "example-id",
  "aud": "",
  "role": "",
  "email": "example@example.com",
  "confirmed_at": "2018-05-01T19:21:00Z",
  "app_metadata": {
    "provider": "email"
  },
  "user_metadata": {},
  "created_at": "2018-05-01T19:21:00Z",
  "updated_at": "2018-05-01T22:04:07.923944421Z",
  "new_email": "new-example@example.com",
  "email_change_sent_at": "2018-05-01T22:04:07.49197052Z"
}
```

### Get a JWT token

This function retrieves a JWT token from a currently logged in user

`user.jwt(forceRefresh)`

Example usage:

```js
const user = auth.currentUser();
const jwt = user.jwt();
jwt
  .then((response) => console.log('This is a JWT token', response))
  .catch((error) => {
    console.log('Error fetching JWT token', error);
    throw error;
  });
```

Example response object:

```bash
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJleHAiOjE1MjUyMTk4MTYsInN1YiI6ImE5NG.98YDkB6B9JbBlDlqqef2nme2tkAnsi30QVys9aevdCw debugger eval code:1:43
```

### Logout a user

This function removes the current session of the user and log out the user

`user.logout()`

Example usage:

```js
const user = auth.currentUser();
user
  .logout()
  .then(response => console.log("User logged out");)
  .catch(error => {
    console.log("Failed to logout user: %o", error);
    throw error;
  });
```

## Admin methods

The following admin methods are currently not available to be used directly. You can access `context.clientContext.identity` and get a short lived admin token through a Lambda function and achieve the same goals, e.g., update user role, create or delete user etc. See [Functions and Identity](https://docs.netlify.com/functions/functions-and-identity/) for more info.

> For users of [Netlify CLI](https://github.com/netlify/cli) - functions using admin methods will _not_ work locally - they need to be deployed to your site in order to work as intended.

Let's create a simple login form in HTML and JavaScript to interact with a lambda function and test out the admin methods.

1. Create an HTML form for user login

```html
<h2>Log in</h2>
<form name="login">
  <div class="message"></div>
  <p>
    <label>Email<br /><input type="email" name="email" required /></label>
  </p>
  <p>
    <label>Password<br /><input type="password" name="password" required /></label>
  </p>
  <button type="submit">Log in</button>
</form>
```

2. Invoke lambda function. (In this example our function is names as `hello.js`)

```js
document.querySelector("form[name='login']").addEventListener("submit", e => {
  e.preventDefault();
  const form = e.target;
  const { email, password } = form.elements;
  auth
    .login(email.value, password.value, true)
    .then(response => {
      const myAuthHeader = "Bearer " + response.token.access_token; //creates the bearer token
      fetch("/.netlify/functions/hello", {
        headers: { Authorization: myAuthHeader },
        credentials: "include"
      })
        .then(response => {
          console.log({ response });
        })
        .catch(error => {...});
    })
    .catch(error => {...});
});
```

### Get a user

This function retrieves a user object with the specified user id

```js
getUser(user) {
    return this.user.\_request(`/admin/users/${user.id}`);
}
```

Example usage:

```js
import fetch from 'node-fetch';

exports.handler = async (event, context) => {
  const { identity, user } = context.clientContext;
  const userID = user.sub;
  const userUrl = `${identity.url}/admin/users/{${userID}}`;
  const adminAuthHeader = `Bearer ${  identity.token}`;

  try {
    return fetch(userUrl, {
      method: 'GET',
      headers: { Authorization: adminAuthHeader },
    })
      .then((response) => response.json())
      .then((data) => {
        console.log('data', JSON.stringify(data));
        return { statusCode: 204 };
      })
      .catch((error) => {
        console.log('Failed to get user! 500! Internal.');
        return {
          statusCode: 500,
          body: `Internal Server Error: ${  error}`,
        };
      });
  } catch (error) {
    console.log('GOT HERE! 500! outer');
    return { statusCode: 500, body: `Internal Server Error: ${  error}` };
  }
};
```

Example response object:

```json
{
  "id": "example-id",
  "aud": "",
  "role": "",
  "email": "example@netlify.com",
  "confirmed_at": "2018-05-09T06:28:46Z",
  "app_metadata": {
    "provider": "email"
  },
  "user_metadata": {},
  "created_at": "2018-05-09T06:28:46Z",
  "updated_at": "2018-05-09T06:28:46Z"
}
```

### Update a user

This function updates the an existing user with the specified attributes

```js
updateUser(user, attributes = {}) {
   return this.user._request(`/admin/users/${user.id}`, {
     method: "PUT",
     body: JSON.stringify(attributes)
   });
}
```

Example usage:

```js
import fetch from "node-fetch";

exports.handler = async (event, context) => {
  const { identity, user } = context.clientContext;
  const userID = user.sub;
  const userUrl = `${identity.url}/admin/users/${userID}`;
  const adminAuthHeader = "Bearer " + identity.token;

  try {
    return fetch(userUrl, {
      method: "PUT",
      headers: { Authorization: adminAuthHeader },
      body: JSON.stringify({ app_metadata: { roles: ["superstar"] } })
    })
      .then(response => {
        return response.json();
      })
      .then(data => {
        console.log("Updated a user! 204!");
        console.log(JSON.stringify({ data }));
        return { statusCode: 204 };
      })
      .catch(e => return {...});
  } catch (e) { return e; }
};
```

Example response object:

```json
{
  "data": {
    "id": "example-id",
    "aud": "",
    "role": "",
    "email": "example@netlify.com",
    "confirmed_at": "2018-05-09T06:52:58Z",
    "app_metadata": {
      "provider": "email",
      "roles": [
        "superstar"
      ]
    },
    "user_metadata": {},
    "created_at": "2018-05-09T06:52:58Z",
    "updated_at": "2018-05-11T00:26:27.668465915Z"
  }
}
```

### Invite a user

To invite a user using the admin token, do a `POST` request to `/invite` endpoint. It's not possible to set `user_metadata` or `app_metadata` until a user has been created.

Example usage:

```js
import fetch from 'node-fetch';

exports.handler = async (event, context) => {
  const { identity } = context.clientContext;
  const inviteUrl = `${identity.url}/invite`;
  const adminAuthHeader = "Bearer " + identity.token;

    try {
      return fetch(inviteUrl, {
        method: "POST",
        headers: { Authorization: adminAuthHeader },
        body: JSON.stringify({ email: "example@example.com" })
      })
      .then(response => {
        return response.json();
      })
      .then(data => {
        console.log("Invited a user! 204!");
        console.log(JSON.stringify({ data }));
        return { statusCode: 204 };
      })
      .catch(e => return {...});
  } catch (e) { return e; };
};
```

Example response:

```json
{
  "id": "example-id",
  "aud": "",
  "role": "",
  "email": "example@example.com",
  "invited_at": "2018-05-25T20:28:04.436230023Z",
  "app_metadata": {
    "provider": "email"
  },
  "user_metadata": null,
  "created_at": "2018-05-25T20:28:03.684905861Z",
  "updated_at": "2018-05-25T20:28:04.862592451Z"
}
```

### Create a new user

This function creates a new user object with the specified new email and password and other optional attributes. User will not be confirmed unless `confirm` parameter is set to true.

```js
createUser(email, password, attributes = {}) {
    attributes.email = email;
    attributes.password = password;
    return this.user.\_request("/admin/users", {
    method: "POST",
    body: JSON.stringify(attributes)
    });
  }
```

Example usage:

```js
import fetch from "node-fetch";

exports.handler = async (event, context) => {
  const { identity, user } = context.clientContext;
  const userID = user.sub;
  const usersUrl = `${identity.url}/admin/users`;
  const adminAuthHeader = "Bearer " + identity.token;

  try {
    return fetch(usersUrl, {
      method: "POST",
      headers: { Authorization: adminAuthHeader },
      body: JSON.stringify({ email: "new-email@netlify.com", password: "newpw", confirm: true })
    })
      .then(response => {
        return response.json();
      })
      .then(data => {
        console.log("Created a user! 204!");
        console.log(JSON.stringify({ data }));
        return { statusCode: 204 };
      })
      .catch(e => {...};
      });
  } catch (e) {
    return e;
  }
};
```

Example response object:

```json
{
  "data": {
    "id": "new-id",
    "aud": "",
    "role": "",
    "email": "new-email@netlify.com",
    "app_metadata": {
      "provider": "email"
    },
    "user_metadata": null,
    "created_at": "2018-05-11T00:37:34.475713996Z",
    "updated_at": "2018-05-11T00:37:34.481743781Z"
  }
}
```

### Delete a user

This function deletes an existing user object

```js
deleteUser(user) {
  return this.user.\_request(`/admin/users/${user.id}`, {
  method: "DELETE"
  });
}
```

Example usage:

```js
import fetch from 'node-fetch';

exports.handler = async (event, context) => {
  const { identity, user } = context.clientContext;
  const userID = user.sub;
  const userUrl = `${identity.url}/admin/users/{${userID}}`;
  const adminAuthHeader = `Bearer ${identity.token}`;

  try {
    return fetch(userUrl, {
      method: 'DELETE',
      headers: { Authorization: adminAuthHeader },
    })
      .then((response) => {
        console.log('Deleted a user!');
        return response.json();
      })
      .then((data) => {
        console.log({ data });
        return { statusCode: 204 };
      })
      .catch((error) => ({
          statusCode: 500,
          body: `Internal Server Error: ${error}`,
        }));
  } catch (error) {
    return error;
  }
};
```

Example response object:

```json
{ "data": {} }
```

### Get a list of users

This function retrieves an array of user objects. The `audience` param is optional. It's for when you are hosting your own identity service and want to support [multitenancy](https://en.wikipedia.org/wiki/Multitenancy).

```js
listUsers(aud) {
    return this.user._request("/admin/users", {
      method: "GET",
      audience: aud
    });
}
```

Example usage:

```js
import fetch from 'node-fetch';

exports.handler = async (event, context) => {
  const { identity, user } = context.clientContext;
  const usersUrl = `${identity.url}/admin/users`;
  const adminAuthHeader = `Bearer ${identity.token}`;

  try {
    return fetch(usersUrl, {
      method: 'GET',
      headers: { Authorization: adminAuthHeader },
    })
      .then((response) => response.json())
      .then((data) => {
        console.log('data', JSON.stringify(data));
        return { statusCode: 204 };
      })
      .catch((error) => ({
          statusCode: 500,
          body: `Internal Server Error: ${error}`,
        }));
  } catch (error) {
    return error;
  }
};
```

Example response object:

```json
{
  "aud": "",
  "users": [
    {
      "id": "example-id-01",
      "aud": "",
      "role": "",
      "email": "example-email-01@netlify.com",
      "app_metadata": {
        "provider": "email"
      },
      "user_metadata": {},
      "created_at": "2018-05-09T18:14:51Z",
      "updated_at": "2018-05-09T18:14:51Z"
    },
    {
      "id": "example-id-02",
      "aud": "",
      "role": "",
      "email": "example-email-02@netlify.com",
      "confirmed_at": "2018-05-09T06:52:58Z",
      "app_metadata": {
        "provider": "email"
      },
      "user_metadata": {},
      "created_at": "2018-05-09T06:52:58Z",
      "updated_at": "2018-05-09T06:52:58Z"
    },
    {
      "id": "example-id-03",
      "aud": "",
      "role": "",
      "email": "example-email-03@netlify.com",
      "confirmed_at": "2018-05-09T06:28:46Z",
      "app_metadata": {
        "provider": "email",
        "roles": [
          "admin"
        ]
      },
      "user_metadata": {},
      "created_at": "2018-05-09T06:28:46Z",
      "updated_at": "2018-05-09T06:28:46Z"
    }
  ]
}
```

## Oauth providers supported by Netlify

Currently we support Google, GitHub, GitLab, and BitBucket as directly supported in the Netlify app UI (other oauth providers require serverless functions to be set up correctly, but these don't.)

[`acceptInviteExternalUrl`](https://github.com/netlify/gotrue-js/blob/6dda47191dac9194658c5899272fc962d96f8cd6/index.d.ts#L21) and [`loginExternalUrl`](https://github.com/netlify/gotrue-js/blob/6dda47191dac9194658c5899272fc962d96f8cd6/index.d.ts#L26) are useful for that. You can see example usage in [`netlify-identity-widget`](https://github.com/netlify/netlify-identity-widget/blob/ece08ed2a3653adcad87cf3998277362e362da60/src/state/store.js#L99-L119)

## See also

- [gotrue](https://github.com/netlify/gotrue)
- [netlify-identity-widget](https://github.com/netlify/netlify-identity-widget/)
- [micro-api-client-library](https://github.com/netlify/micro-api-client-lib)
- [Netlify identity docs](https://www.netlify.com/docs/identity/)