doc/app_nextcloud.md

# Add storage space

Solution I) allows you to add a link to a local or remote folder.  
Solution II) allows to move the main storage space of nextcloud.

## I) Add an external storage space

Parameter =>[Administration] External storage.

At the bottom of the list you can add a folder (It is possible to define a subfolder using the `folder/subfolder` convention.)  
Select a storage type and specify the requested connection information.  
You can restrict this folder to one or more nextcloud users with the column `Available for`.  
With the gear you can allow or prohibit previewing and file sharing.  
Finally click on the check mark to validate the folder.

## II) Migrate Nextcloud data to a larger partition

**Note**: The following assumes that you have a hard disk mounted on `/media/storage`. Refer to[this article](/external_storage_en) to prepare your system.

**Note**: Replace `nextcloud` with the name of its instance, if you have several Nextcloud apps installed.

First turn off the web server with the command:
```bash
systemctl stop nginx  
```

#### Choice of location

#### Case A: Blank storage, exclusive to Nextcloud

For the moment only root can write to it in `/media/storage`, which means that nginx and nextcloud will not be able to use it.

```bash
chown -R nextcloud:nextcloud /media/storage
chmod 775 -R /media/storage
```

#### Case B: Shared storage, data already present, Nextcloud data in a subfolder

If you want to use this disk for other applications, you can create a subfolder belonging to Nextcloud.

```bash
mkdir -p /media/storage/nextcloud_data
chown -R nextcloud /media/storage/nextcloud_data
chmod 775 -R /media/storage/nextcloud_data
```

#### Migrate data

Migrate your data to the new disk. To do this *(be patient, it can take a long time)*:

```bash
Case A: cp -ir /home/yunohost.app/nextcloud /media/storage
Case B: cp -ir /home/yunohost.app/nextcloud /media/storage/nextcloud_data
```

The `i` option allows you to ask yourself what to do if there is a file conflict, especially if you overwrite an old Owncloud or Nextcloud data folder.

To check that everything went well, compare what these two commands display (the content must be identical):

```bash
ls -la /home/yunohost.app/nextcloud

Case A: ls -al /media/storage
Case B: ls -al /media/storage/nextcloud_data/nextcloud
```

#### Configure Nextcloud

To inform Nextcloud of its new directory, modify the `/var/www/nextcloud/config/config.php` file with the command:

```bash
nano /var/www/nextcloud/config/config.php
```

Look for the line:

```bash
'datadirectory' => '/home/yunohost.app/nextcloud/data',
```

That you modify:

```bash
CASE A:'datadirectory' =>'/media/storage',
CASE B:'datadirectory' =>'/media/storage/nextcloud_data/nextcloud/data',
```

Back up with `ctrl+x` then `y` or `o` (depending on your server locale).

Restart the web server:

```bash
systemctl start nginx
```

Add the.ocdata file
```bash
CASE A: nano /media/storage/.ocdata
CASE B: nano /media/storage/nextcloud_data/nextcloud/data/.ocdata
```
Add a space to the file to be able to save it

Back up with `ctrl+x` then `y` or `o` (depending on your server locale).

Run a scan of the new directory by Nextcloud:

```bash
cd /var/www/nextcloud
sudo -u nextcloud php occ files:scan --all
```

It's over now. Now test if everything is fine, try connecting to your Nextcloud instance, upload a file, check its proper synchronization.

# The KeeWeb application

The KeeWeb application is a password manager integrated into Nextcloud. For example, it allows you to read a KeePass file (*.kdbx*) stored on your Nextcloud instance. 
But sometimes Nextcloud does not let the application support these files, which makes it impossible to read them from KeeWeb. To remedy this, 
[a solution](https://github.com/jhass/nextcloud-keeweb/issues/34) exists.

Go to the Nextcloud configuration directory:

```bash
cd /var/www/nextcloud/config/
```

If it does not exist, create the *mimetypemapping.json* file whose owner is the user *nextcloud* :

```bash
sudo su nextcloud -c "nano mimetypemapping.json"
```

Then add in this file the following text:

```bash
{
    "kdbx": ["x-application/kdbx"]
}
```

Save the file (**CTRL** + **o**) and exit nano (**CTRL** + **c**).

Now the problem is fixed.

# Nextcloud and Cloudflare

If you use Cloudflare for your DNS, *which may be useful if you have a dynamic IP*, you will most likely have authentication problems with the Nextcloud application. On the Internet many people propose to create a rule that disables all options related to security and Cloudflare speed for the url pointing to your Nextcloud instance. Although it works, it is not the optimal solution. I propose, certainly to create a rule for the url pointing to your Nextcloud instance but to disable only 2 options. So here's how:

## Cloudflare Page Rules

In the Cloudflare control panel select your domain and find Page Rules
the url in your address bar will look like this: https://dash.cloudflare.com/*/domain.tld/page-rules

#### Add a rule

The rule to be added must apply to the url of your Nextcloud instance either:

- `https://nextcloud.domain.tld/**` if you use a subdomain
- `https://domain.tld/nextcloud/*`` if you have deployed Nextcloud in a directory

The options to disable (Off) are:

- Rocket Loader
- Email Obfuscation

Save and clean your caches (Cloudflare, browser,...) and that's it.