### docs (LiteStore Documents)

A document is the main resource type managed by LiteStore. Any LiteStore document can be represented as a JSON object exposing the following properties:

* id: The unique identifier of the document.
* data: The document contents (base64-encoded if binary).
* created: The document creation date expressed as combined date and time in UTC ([ISO 8601](http://en.wikipedia.org/wiki/ISO_8601) compliant).
* modified: The document modification date (if applicable) expressed as combined date and time in UTC ([ISO 8601](http://en.wikipedia.org/wiki/ISO_8601) compliant).
* tags: A list of tags associated to the document.

> %note%
> JSON Documents
>
> Documents with content type "application/json" are special: their **data** property is _not_ set to a string like for all other textual and binary documents, but a real, non-escaped JSON object. This little quirk makes JSON documents _different_ from other documents, but also makes things so much easier when you just want to use LiteStore as a simple JSON document store.

#### Example Document

```
{
    "id": "test_document",
    "data": "This is a test document",
    "created": "2015-02-07T10:36:09Z",
    "modified": null,
    "tags": ["$type:text", "$subtype:plain", "$format:text", "another_tag"]
}
```

#### OPTIONS docs

Returns the allowed HTTP verbs for the this resource.

##### Example

```
$ curl -i -X OPTIONS 'http://127.0.0.1:9500/docs'
HTTP/1.1 200 OK
Content-Length: 0
Access-Control-Allow-Methods: HEAD,GET,OPTIONS,POST
Allow: HEAD,GET,OPTIONS,POST
Access-Control-Allow-Headers: Content-Type
Access-Control-Allow-Origin: *
Server: LiteStore/1.0.3
```

#### OPTIONS docs/:id

Returns the allowed HTTP verbs for this resource.

##### Example

```
curl -i -X OPTIONS 'http://127.0.0.1:9500/docs/test' 
HTTP/1.1 200 OK   
Content-Length: 0  
Allow: HEAD,GET,PUT,PATCH,DELETE,OPTIONS
```

#### POST docs

Creates a new document with a randomly-generated ID.

##### Example

```
$ curl -i -X POST -d 'A document with a randomly-generated ID.' 'http://127.0.0.1:9500/docs' --header "Content-Type:text/plain"
HTTP/1.1 201 Created
Content-Length: 197
Content-Type: application/json
Access-Control-Allow-Headers: Content-Type
Access-Control-Allow-Origin: *
Server: LiteStore/1.0.3

{"id": "555f93e82190e77500000000", "data": "A document with a randomly-generated ID.", "created": "2015-05-22T08:39:04Z", "modified": null, "tags": ["$type:text", "$subtype:plain", "$format:text"]}
```

#### HEAD docs

Retrieves all headers related to the docs resource and no content (this is probably not that useful, but at least it should make REST purists happy).

```
$ curl -i -X HEAD 'http://127.0.0.1:9500/docs'
HTTP/1.1 200 OK
Content-Length: 0
Content-Type: application/json
Access-Control-Allow-Headers: Content-Type
Access-Control-Allow-Origin: *
Server: LiteStore/1.0.3
```

#### HEAD docs/:id

Retrieves all headers related to the a document and no content. Useful to check whether a document exists or not.

```
$ curl -i -X HEAD 'http://127.0.0.1:9500/docs/test'
HTTP/1.1 200 OK
Content-Length: 0
Content-Type: application/json
Access-Control-Allow-Headers: Content-Type
Access-Control-Allow-Origin: *
Server: LiteStore/1.0.3
```

#### GET docs

Retrieves a list of documents in JSON format.

##### Query String Options

The following query string options are supported:

* **search** – Search for the specified string. Example: `http://127.0.0.1:9500/docs/?search=Something`.
* **tags** – Retrieve only documents with matching tag(s). Example: `http://127.0.0.1:9500/docs/?tags=tag1,tag2`
* **limit** – Retrieve only the first _n_ results. Example: `http://127.0.0.1:9500/docs/?limit=5`
* **offset** – Skip the first _n_ results. Example: `http://127.0.0.1:9500/docs/?offset=5`
* **sort** – Sort by **created**, **modified**, or **id**. Example: `http://127.0.0.1:9500/docs/?sort=id`
* **contents** – If set to **false**, do not retrieve document data. Example: `http://127.0.0.1:9500/docs/?contents=false`

> %tip%
> Tip
> 
> If **search** is specified, each result will contain a **highlight** property with a highlighted search snippet, and a **rank** property identified the rank of the result within the search. Results will also be automatically ordered by descending rank.

##### Example

```
$ curl -i 'http://localhost:9500/docs?search=Use%20Cases&limit=10
&offset=0&tags=$subtype:x-markdown'
HTTP/1.1 200 OK
Content-Length: 1960
Content-Type: application/json
Access-Control-Allow-Headers: Content-Type
Access-Control-Allow-Origin: *
Server: LiteStore/1.0.3

{
  "search": "Use Cases",
  "tags": [
    "$subtype:x-markdown"
  ],
  "limit": 10,
  "total": 3,
  "execution_time": 0.01843700000000001,
  "results": [
    {
      "id": "admin/md/use-cases.md",
      "created": "2015-09-19T01:37:59Z",
      "modified": null,
      "highlight": "### <strong>Use</strong> <strong>Cases</strong>\u000A\u000AWhile LiteStore may not be the best choice for large data-intensive applications, it definitely shines when <strong>used</strong> for rapid prototyping and as a backend for small/lightweight<strong>&hellip;</strong>",
      "rank": "99.5820018475243",
      "tags": [
        "$type:text",
        "$subtype:x-markdown",
        "$format:text",
        "$dir:admin"
      ]
    },
    {
      "id": "admin/md/architecture.md",
      "created": "2015-09-19T01:37:59Z",
      "modified": null,
      "highlight": "<strong>&hellip;</strong>public unique document identifier, <strong>used</strong> to access the document via the HTTP API.\u000A* **data** &ndash; The contents of the document (or their base64-encoded representation in <strong>case</strong> of binary documents<strong>&hellip;</strong>",
      "rank": "39.492608737092",
      "tags": [
        "$type:text",
        "$subtype:x-markdown",
        "$format:text",
        "$dir:admin"
      ]
    },
    {
      "id": "admin/md/overview.md",
      "created": "2015-09-19T01:37:59Z",
      "modified": null,
      "highlight": "<strong>&hellip;</strong>contained, LiteStore comes with many <strong>useful</strong> features that are essential for many <strong>use</strong> <strong>cases</strong>.\u000A\u000A#### [](class:fa-file-text-o) Multi-format Documents\u000A\u000ALiteStore can be <strong>used</strong> to store documents in<strong>&hellip;</strong>",
      "rank": "39.4926086158248",
      "tags": [
        "$type:text",
        "$subtype:x-markdown",
        "$format:text",
        "$dir:admin"
      ]
    }
  ]
}
```

#### GET docs/:id

Retrieves the specified document. By default the response is returned in the document's content type; however, it is possible to retrieve the raw document (including metadata) in JSON format by setting the **raw** query string option to true.

##### Example: original content type

```
$ curl -i 'http://127.0.0.1:9500/docs/test'
HTTP/1.1 200 OK
Content-Length: 24
Content-Type: text/plain
Access-Control-Allow-Headers: Content-Type
Access-Control-Allow-Origin: *
Server: LiteStore/1.0.3

This is a test document.
```

##### Example: raw format

```
$ curl -i 'http://127.0.0.1:9500/docs/test?raw=true'
HTTP/1.1 200 OK
Content-Length: 191
Content-Type: application/json
Access-Control-Allow-Headers: Content-Type
Access-Control-Allow-Origin: *
Server: LiteStore/1.0.3

{"id": "test", "data": "This is a test document.", "created": "2015-09-19T08:07:43Z", "modified": null, "tags": ["$type:text", "$subtype:plain", "$format:text"]}
```

#### PUT docs/:id

Updates an existing document or creates a new document with the specified ID.

```
$ curl -i -X PUT -d 'This is a test document.' 'http://127.0.0.1:9500/docs/test' --header "Content-Type:text/plain"
HTTP/1.1 201 Created
Content-Length: 161
Content-Type: application/json
Access-Control-Allow-Headers: Content-Type
Access-Control-Allow-Origin: *
Server: LiteStore/1.0.3

{"id": "test", "data": "This is a test document.", "created": "2015-05-22T08:40:00Z", "modified": null, "tags": ["$type:text", "$subtype:plain", "$format:text"]}
```

#### PATCH docs/:id

Adds, removes, replaces or tests the specified document for tags. Operations must be specified using the [JSONPatch](http://jsonpatch.com/) format.

Always retrieve document tags first before applying a patch, to know the order tags have been added to the document.

> %warning%
> Limitations
>
> * Only **add**, **remove**, **replace** and **test** operations are supported.
> * It is currently only possible to change tags, not other parts of a document.

```
$ curl -i -X PATCH 'http://localhost:9500/docs/test.json' --header "Content-Type:application/json" -d '[{"op":"add", "path":"/tags/3", "value":"test1"},{"op":"add", "path":"/tags/4", "value":"test2"},{"op":"add", "path":"/tags/5", "value":"test3"}]'
HTTP/1.1 200 OK
Content-Length: 187
Content-Type: application/json
Access-Control-Allow-Headers: Content-Type
Access-Control-Allow-Origin: *
Server: LiteStore/1.0.3

{"id": "test.json", "data": {"test": true}, "created": "2015-09-20T09:06:25Z", "modified": null, "tags": ["$type:application", "$subtype:json", "$format:text", "test1", "test2", "test3"]}
```

#### DELETE docs/:id

Deletes the specified document.

##### Example

```
$ curl -i -X DELETE 'http://127.0.0.1:9500/docs/test'
HTTP/1.1 204 No Content
Content-Length: 0
Access-Control-Allow-Headers: Content-Type
Access-Control-Allow-Origin: *
Server: LiteStore/1.0.3
```