# Yo!

Micro Web Crawler in PHP & Manticore

Yo! is the super thin client-server crawler based on [Manticore](https://github.com/manticoresoftware) full-text search.\
Compatible with different networks, includes flexible settings, history snaps, CLI tools and UI for [Gemini Protocol](https://geminiprotocol.net).

To use `HTTP` version, please checkout [main branch](https://github.com/YGGverse/Yo)!

## Features

* MIME-based crawler with flexible filter settings by regular expressions, selectors, external links etc
* Page snap history with local and remote mirrors support (including FTP protocol)
* CLI tools for index administration and crontab tasks
* Gemini Protocol UI (coming soon)

## Components

* [Manticore Server](https://github.com/manticoresoftware/manticoresearch)
* [PHP library for Manticore](https://github.com/manticoresoftware/manticoresearch-php)
* [FTP client for snap mirrors](https://github.com/YGGverse/ftp-php)

### Install

#### Environment

##### Debian

* `wget https://repo.manticoresearch.com/manticore-repo.noarch.deb`
* `dpkg -i manticore-repo.noarch.deb`
* `apt update`
* `apt install git composer manticore manticore-extra php-fpm php-mbstring`

Yo search engine uses Manticore as the primary database. If your server sensitive to power down,
change default [binlog flush strategy](https://manual.manticoresearch.com/Logging/Binary_logging#Binary-flushing-strategies) to `binlog_flush = 1`

#### Deployment

* `git clone https://github.com/YGGverse/Yo.git`
* `cd Yo`
* `git checkout gemini`
* `composer update`

#### Development

* `git clone https://github.com/YGGverse/Yo.git`
* `cd Yo`
* `git checkout gemini`
* `git checkout -b pr-branch`
* `git commit -m 'new fix'`
* `git push`

#### Update

* `cd Yo`
* `git pull`
* `composer update`

#### Init

* `cp example/config.json config.json`
* `php src/cli/index/init.php`

#### Usage

* `php src/cli/document/add.php URL`
* `php src/cli/document/crawl.php`
* `php src/cli/document/search.php '*'`

#### Gemini UI

Coming soon..

## Documentation

### CLI

#### Index

##### Init

Create initial index

```
php src/cli/index/init.php [reset]
```
* `reset` - optional, reset existing index

##### Alter

Change existing index

```
php src/cli/index/alter.php {operation} {column} {type}
```
* `operation` - operation name, supported values: `add`|`drop`
* `column` - target column name
* `type` - target column type, supported values: `text`|`integer`

#### Document

##### Add

```
php src/cli/document/add.php URL
```
* `URL` - add new URL to the crawl queue

##### Crawl

```
php src/cli/document/crawl.php
```

##### Clean

Make index optimization, apply new configuration rules

```
php src/cli/document/clean.php [limit]
```

* `limit` - integer, documents quantity per queue

##### Search

```
php src/cli/document/search.php '@title "*"' [limit]
```
* `query` - required
* `limit` - optional search results limit

### Backup

#### Logical

SQL text dumps could be useful for public index distribution, but requires more computing resources.

[Read more](https://manual.manticoresearch.com/Securing_and_compacting_a_table/Backup_and_restore#Backup-and-restore-with-mysqldump)

#### Physical

Better for infrastructure administration and includes original data binaries.

[Read more](https://manual.manticoresearch.com/Securing_and_compacting_a_table/Backup_and_restore#Using-manticore-backup-command-line-tool)

## Instances

Coming soon..