# GitBook Plugin Analytics


## Table Of Contents

* Links
* Get Started
* Advanced Configs
* Example 1, Different Analytics In Different Contexts
* Example 2, Split The Context Into Parts
* Example 3, Simplify The Config, Extracting Bases
* Example 4, Simplify The Config, Predefining Vendors
* Before We Start

## Links

* Homepage
* Change Log

## Get Started

Firstly, edit book.json which should be located at the root dir of a gitbook. If it does not exist, create it!

``javascript
// book.json
{
// ...

"plugins": [
// ...,
"analytics"
],

"pluginsConfig": {
// ...,
"analytics": {
"google": "TOKEN-1",
"baidu": "TOKEN-2"
}
}
}
`

Secondly, run the next commands to active the plugin:

`bash


Change dir to the gitbook's root dir.

Install the plugins.

gitbook install

Build the the book,

gitbook build

OR, serve it.

gitbook serve
`

## Advanced Configs

As the previous section described, it's so easy to active Google Analytics or Baidu Tongji by adding responding tokens in pluginsConfig.

However, sometimes the _book folder generated by gitbook may be copied and released to locations other than gitbook.com. So, THE PLUGIN allows to be enabled in some situations and disabled in others. And, it also allows you to use different analytics for different situations.

### Example 1, Different Analytics In Different Contexts

A context is defined by a base URL:

`javascript
{
"pluginsConfig": {
// ...,
"analytics": {
/ Here "context" is a fixed property name, NOT name of vendor. /
"context": [
// ...,
{
"vendor": "google",
"token": "TOKEN-1",
"base": "http://home.example.com/mybook/"
},
{
"vendor": "google",
"token": "TOKEN-2",
"base": "http://mybook.example.com:8080/"
}
]
}
}
}
`

The base property may be in one of next forms:

* full base url, e.g.
http://home.example.com/mybook/

* base url without protocol, e.g.
//home.example.com/mybook/

* only protocol, which should be one of the following:
* http
* https

* only hostname, e.g.
home.example.com

* only port, e.g.
8080

* only host (hostname and port), e.g.
mybook.example.com:8080

* only base path (must begin with a slash "/"), e.g.
/mybook/


The base property may also be an array, e.g.

`javascript
{
"pluginsConfig": {
// ...,
"analytics": {
/ Here "context" is a fixed property name, NOT name of vendor. /
"context": [
// ...,
{
"vendor": "google",
"token": "TOKEN-1",
"base": [
"http://home.example.com/mybook/",
"http://www.example.com/mybook/"
]
},
{
"vendor": "google",
"token": "TOKEN-2",
"base": "http://mybook.example.com:8080/"
}
]
}
}
}
`

### Example 2, Split The Context Into Parts

`javascript
{
"pluginsConfig": {
// ...,
"analytics": {
/ Here "context" is a fixed property name, NOT name of vendor. /
"context": [
// ...,
{
"vendor": "google",
"token": "TOKEN-1",
"hostname": "home.example.com",
"path": "/mybook/"
},
{
"vendor": "google",
"token": "TOKEN-2",
"hostname": "mybook.example.com",
"port": "8080"
}
]
}
}
}
`

Actually, we may define the context with next details:

protocol*
hostname*
host*
port*
path*

The bundled analytics will only be enabled when all details specified matching. Each context property may be a string or an array, e.g.

`javascript
{
"pluginsConfig": {
// ...,
"analytics": {
/ Here "context" is a fixed property name, NOT name of vendor. /
"context": [
// ...,
{
"vendor": "google",
"token": "TOKEN-1",
"hostname": [ "home.example.com", "www.example.com" ],
"path": "/mybook/"
},
{
"vendor": "google",
"token": "TOKEN-2",
"hostname": "mybook.example.com",
"port": [ "8080", "8088" ]
}
]
}
}
}
`

### Example 3, Simplify The Config, Extracting Bases

The base values may be extracted to be the keyname of analytics object, as long as it DOES NOT EQUAL TO:

* vendor codes, including
baidu*
google*
* or other preserved keywords, including
context*
contexts*
vendor*
vendors*

`javascript
{
"pluginsConfig": {
// ...,
"analytics": {
// ...,
"//home.example.com/mybook/": {
"vendor": "google",
"token": "TOKEN-1"
},
"mybook.example.com:8080": {
"vendor": "google",
"token": "TOKEN-2"
}
}
}
}
`

In these cases, vendor and token can also be expressed with an array. e.g.

`javascript
{
"pluginsConfig": {
// ...,
"analytics": {
// ...,
"//home.example.com/mybook": [ "google", "TOKEN-1" ],
"mybook.example.com": [ "google", "TOKEN-2" ] / vendor first, and token follows /
}
}
}
`

### Example 4, Simplify The Config, Predefining Vendors

`javascript
{
"pluginsConfig": {
// ...,
"analytics": {
// ...,
/ "vendors" and "vendor" are preserved keywords. /
"vendors": {
/ This keyname is user defined. /
/ The value is an object made up of "vendor" and "token". /
"MY_ANALITICS_NAME_1": { "vendor": "google", "token": "TOKEN-1" },

/* The value may also be an array
vendor code first and token follows. */
"MY_ANALITICS_NAME_2": [ "google", "TOKEN-2" ],

/ The value may also be a group of analytics. /
"MY_ANALITICS_NAME_3": [
[ "google", "TOKEN-3" ],
[ "baidu", "TOKEN-4" ]
]
},
/ Apply analytics to specified base. /
"//home.example.com/mybook/": "MY_ANALITICS_NAME_1",
"mybook.example.com:8080": "MY_ANALITICS_NAME_2",
"mybook.example.com": "MY_ANALITICS_NAME_3"
}
}
}
`

## Before We Start

ATTENTION: Gitbook project config file book.json is JSON format, in which no comment is allowed. So, the C-style comments in example configs should be deleted in real config file.

THE PLUGIN is compitable with gitbook >= 3.x.x. If the gitbook engine you installed is an older one, THE PLUGIN does not work, and the next message will be printed in console when you build or serve your book:

`bash


...

info: load plugin gitbook-plugin-analytics ....ERROR

...

Error: Error loading plugins: gitbook-plugin-analytics. Run 'gitbook install' to install plugins from NPM.
`

Stop trying to run gitbook install again and again, it's vain.

__DO NOT know what is the current version of gitbook?__ Run the next command to see:

`bash


List installed versions of gitbook engine.

gitbook verions

One or more versions will be listed row by row.

The one prefixed with * is the currrent version.

Force install specific version of gitbook engine if necessary.

gitbook versions:install 3.2.2
``