docs: update structure and create links between pages (#1611)

* docs: rework files structure

* rewrite documentation entrypoint

* update category files and use yml

* add manuals entry page

* update admin-manual titles and page order

* create releases sections

* move ssl configuration to reverse proxy

* docs: update website vars and links

* update release note codeblock syntax key

* resurect troubleshooting guide

* Update freeipa custom auth documentation

* add notice about the state of the documentation

* update the backup documentation

* tmp: allow to deploy the website for preview

* Don't use require.resolve for plugins

* Update the main page link dest

* update development environment title

* rewrite the install/upgrade/migrate as guides

* update website docs sections links

* Fix urls

* move release note to documentation

* move home links to vars files

* tmp: update deploy url

* add react to tsconfig to handle jsx linting

* fix: replace absolute url to relative path to files

* tmp: allow CI Website dpeloy on working branch

* Update release note title

* use default syntax highlighting theme

* update the troubleshooting guide

* Wording

* use CodeBlock components

* Better prose

* remove api_client config section

* fix prose errors

* update import prefix for vars file

* reroder docs manuals links

* use sentence capitalization for page titles

* Wording

* missing word

* Update note about syslog log file

* wording
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---
title: Developer manual
---
Welcome to the **LibreTime developer manual**, you should find guides to integrate LibreTime and tools to improve and contribute to LibreTime.
## Integrate LibreTime
- :construction: Work in progress
## Improve and contribute to LibreTime
- :construction: Work in progress

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label: Developer manual
position: 40

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---
title: Development environment
---
## Vagrant
To use Vagrant, you need to install a virtualization engine: [VirtualBox](https://www.virtualbox.org) or Libvirt. The [vagrant-vbguest] package on Github can help maintain guest extensions on host systems using VirtualBox.
:::tip
If you try run a libvirt provided box after using a VirtualBox one, you will receive an
error:
```
Error while activating network:
Call to virNetworkCreate failed: internal error: Network is already in use by interface vboxnet0.
```
This is fixed by stopping virtualbox and re-creating the vagrant box:
```bash
sudo systemctl stop virtualbox
vagrant destroy ubuntu-bionic
vagrant up ubuntu-bionic --provider=libvirt
```
:::
### Installing Libvirt
On Debian and Ubuntu:
1. Install Vagrant
```bash
sudo apt install vagrant vagrant-libvirt libvirt-daemon-system vagrant-mutate libvirt-dev
sudo usermod -aG libvirt $USER
```
2. Reboot your computer, and then run
```bash
vagrant box add bento/ubuntu-18.04 --provider=virtualbox
vagrant mutate bento/ubuntu-18.04 libvirt
vagrant up ubuntu-bionic --provider=libvirt
```
On other distributions, you will need to install [libvirt](https://libvirt.org/) and `vagrant-mutate` and then run
```bash
vagrant plugin install vagrant-libvirt
sudo usermod -a -G libvirt $USER
# Reboot
vagrant plugin install vagrant-mutate
vagrant box fetch bento/ubuntu-18.04
vagrant mutate bento/ubuntu-18.04 libvirt
vagrant up ubuntu-bionic --provider=libvirt
```
### Starting LibreTime Vagrant
To get started you clone the repo and run `vagrant up`. The command accepts a parameter to
change the default provider if you have multiple installed. This can be done by appending
`--provider=virtualbox` or `--provider=libvirt` as applicable.
```bash
git clone https://github.com/libretime/libretime.git
cd libretime
vagrant up ubuntu-bionic
```
If everything works out, you will find LibreTime on [port 8080](http://localhost:8080)
and Icecast on [port 8000](http://localhost:8000).
Once you reach the web setup GUI you can click through it using the default values. To
connect to the vagrant machine you can run `vagrant ssh ubuntu-bionic` in the libretime
directory.
### Alternative OS installations
With the above instructions LibreTime is installed on Ubuntu Bionic. The Vagrant setup
offers the option to choose a different operation system according to you needs.
| OS | Command | Comment |
| ------------ | ---------------------------- | ----------------------------------------------------------- |
| Debian 10 | `vagrant up debian-buster` | Install on Debian Buster. |
| Debian 11 | `vagrant up debian-bullseye` | Install on Debian Bullseye. |
| Ubuntu 18.04 | `vagrant up ubuntu-bionic` | Install on Ubuntu Bionic Beaver. |
| Ubuntu 20.04 | `vagrant up ubuntu-focal` | Install on Ubuntu Focal Fossa. |
| CentOS | `vagrant up centos` | CentOS 8 with native systemd support and activated SELinux. |
### Troubleshooting
If anything fails during the initial provisioning step you can try running `vagrant provision`
to re-run the installer.
If you only want to re-run parts of the installer, use `--provision-with $step`. The
supported steps are `prepare` and `install`.
## Multipass
[Multipass](https://multipass.run) is a tool for easily setting up Ubuntu VMs on Windows, Mac, and Linux.
Similar to Docker, Multipass works through a CLI. To use, clone this repo and then create a new Multipass VM.
```
git clone https://github.com/libretime/libretime.git
cd libretime
multipass launch bionic -n ltTEST --cloud-init cloud-init.yaml
multipass shell ltTEST
```
Multipass isn't currently able to do an automated install from the cloud-init script.
After you enter the shell for the first time, you will still need to [run the LibreTime installer](../admin-manual/setup/install.md).
The IP address of your new VM can be found by running `multipass list`. Copy and paste it into your web browser to access the LibreTime interface and complete the setup wizard.
You can stop the VM with `multipass stop ltTEST` and restart with `multipass start ltTEST`.
If you want to delete the image and start again, run `multipass delete ltTEST && multipass purge`.
### Cloud-init options in cloud-init.yaml
You may wish to change the below fields as per your location.
```yaml
timezone: America/New York # change as needed
ntp:
pools: ["north-america.pool.ntp.org"]
servers: ["0.north-america.pool.ntp.org", "0.pool.ntp.org"]
```

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---
title: LibreTime API usage
---
:::info
We're in the process of rewriting LibreTime's API. This page contains the instructions for the current version, written in PHP.
:::
The LibreTime API enables many types of information about the broadcast schedule and configuration to be retrieved from the LibreTime server. Other than the live-info and week-info data fetched by website widgets (see the chapter _Exporting the schedule_), all API requests must be authenticated using the secret API key stored in the file `/etc/airtime/api_client.cfg` on the LibreTime server. This key is autogenerated during LibreTime installation and should be unique for each server.
If you intend to use the LibreTime API across a public network, for security reasons it is highly recommended that all API requests are sent over encrypted https: and that the web server is configured to accept requests to the api/ directory from specific host names or IP addresses only.
The format of API requests is:
```
https://libretime.example.com/api/api-action/format/json/api_key/XXXXXX
```
where api-action is the type of request and XXXXXX is the secret API key. Available actions include:
- on-air-light - return true if the station is on air
- status - get the status of LibreTime components and resource usage
- version - returns the version of LibreTime installed
- get-files-without-silan-value - list files for which silence detection has not yet been performed
- get-stream-setting - gets the settings of LibreTime output streams
- get-stream-parameters - gets the parameters of LibreTime output streams
For example, using the action _get-stream-setting_ returns the following output for the first configured stream:
```json
{"keyname":"s1_type","value":"ogg","type":"string"},
{"keyname":"s1_host","value":"streaming.example.com","type":"string"},
{"keyname":"s1_port","value":"8000","type":"integer"},
{"keyname":"s1_mount","value":"airtime_128","type":"string"},
{"keyname":"s1_url","value":"http:\/\/airtime.sourcefabric.org","type":"string"},
{"keyname":"s1_description","value":"Airtime Radio! Stream #1","type":"string"},
{"keyname":"s1_genre","value":"Screamo","type":"string"},
```
which is enough information to construct a player widget dynamically. (s1_url is the station's homepage, not the stream URL). The same information is provided with an s2\_ prefix for the second stream, and s3\_ prefix for the third stream.
Some API requests require the directory ID number to be specified as _dir_id_ including:
- list-all-files - list files in the specified directory
- get-files-without-replay-gain - list files in the specified directory for which ReplayGain has not been calculated yet
For example, using a request such as:
```
http://libretime.example.com/api/list-all-files/format/json/api_key/XXXXXX/dir_id/1/
```
returns the full path to each media file in the LibreTime storage directory:
```json
{
"files": [
"imported/1/Mark Ronson feat. Saigon/Here Comes the Fuzz/7-Diduntdidunt-unknown.flac",
"imported/1/Jimi Tenor & Tony Allen/Inspiration Information/3-Selfish Gene-128kbps.mp3"
]
}
```

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---
title: Widgets
---
Bring your LibreTime broadcast to your website with embeddable widgets! LibreTime comes with two widgets: a streaming player and a schedule. Both widgets use iframes to display and can be placed wherever embeddable code can on a website.
## Getting started
Before using the widgets, make sure LibreTime's Public API is enabled in **Settings** > **General**.
![](./widgets-widgets_settings.png)
:::tip Note
LibreTime widgets cannot function through VPNs or SSH tunneling. The instance must be accessible from the internet for the widgets to work.
:::
## Streaming player widget
The streaming player widget inserts your LibreTime stream into your website. One example is from [WRCS Community Radio](https://wcrsfm.org/) in Columbus, Ohio, USA.
<iframe frameborder="0" width="400" height="235" src="http://broadcast.wcrsfm.org/embed/player?stream=auto&title=Now Playing"></iframe>
![](./widgets-widgets_player.png)
From **Widgets** > **Player**, enter a title for your streaming widget and select what stream you'd like to use. All selectible streams must first be configured in **Settings** > **Streams** (see [Settings](../user-manual/settings.md)). **Auto detect** should be fine for most.
## Show schedule widget
![](./widgets-widgets_schedule.png)
The show schedule widget displays the upcoming shows for the next seven days. There are no customizable settings for this widget.