Callapi

Easy API calls

Installation

Add this line to your application's Gemfile:

gem 'callapi'

And then execute:

$ bundle

Or install it yourself as:

$ gem install callapi

## Usage

Basics

1 Configuration: Set your API host

require 'callapi'

Callapi::Config.configure do |config|
  config.api_host = 'http://your.api.org/v2'
end

##### 2 Routes: set your calls ```ruby Callapi::Routes.draw do get 'notes' # This creates #get_notes_call method get 'notes/:id' # This creates #get_notes_by_id_call method post 'notes' # This creates #post_notes_call method end ```
##### 3 Use your calls: #data and #body methods ```ruby get_notes_call.data.each do |note| puts note['title'] end

Raw response:

get_notes_call.body #=> '[{"id":1,"title":"Jogging in park"},{"id":2,"title":"Pick-up posters from post-office"}]'

Request with params:

post_notes_call(id: 1, title: "Swimming").data

Request with params and headers:

post_notes_call(id: 1, title: "Swimming").add_headers('X-SECRET-TOKEN' => '783hdkfds349').data

<br>
### Routes

##### HTTP methods
```ruby
Callapi::Routes.draw do
  get 'results'     #=> #get_results_call
  post 'results'    #=> #post_results_call
  put 'results'     #=> #put_results_call
  patch 'results'   #=> #patch_results_call
  delete 'results'  #=> #delete_results_call
end

##### Params ```ruby Callapi::Routes.draw do get 'users/:id' #=> #get_users_by_id_call(id: 109) | :id is required put 'users/:id' #=> #put_users_by_id_call(id: 109, name: 'Kacper', age: 467) put 'users/:id/posts/:post_id' #=> #put_users_by_id_posts_by_post_id_call(id: 109, post_id: 209) end ```
##### Namespaces ```ruby Callapi::Routes.draw do get 'users' #=> #get_users_call

namespace 'users' do get ':id' #=> #get_users_by_id_call(id: 109) delete ':id' #=> #delete_users_by_id_call(id: 109) end

namespace 'users/:id/posts' do get ':post_id' #=> #get_users_by_id_posts_by_post_id_call(id: 109, post_id: 209) end end

<br>
##### Options
```ruby
Callapi::Routes.draw do
  get 'users', parser: Callapi::Call::Parser::Json
end

## Parsers

Available parsers

Callapi provides following parsers:

• Callapi::Call::Parser::Json
• Callapi::Call::Parser::Json::AsObject
• Callapi::Call::Parser::Plain

Default is Callapi::Call::Parser::Json.

__`Callapi::Call::Parser::Json`__ converts JSON to `Hash`. If the API response for `/notes/12` is

{ "id": 2, "title": "Pick-up posters from post-office" }

then with #data method we can convert this response to Hash:

get_notes_by_id_call(id: 12).data['id']  #=> 2

__`Callapi::Call::Parser::Json::AsObject`__ converts JSON to an object called `DeepStruct` (very similar to [`OpenStruct`](http://www.ruby-doc.org/stdlib-2.0/libdoc/ostruct/rdoc/OpenStruct.html)): ```ruby get_notes_by_id_call(id: 12).data.title #=> "Pick-up posters from post-office" ```
__`Callapi::Call::Parser::Plain`__ does not parse at all: ```ruby get_notes_by_id_call(id: 12).data #=> '{ "id": 2, "title": "Pick-up posters from post-office" }' ```
##### Setting parsers Default parser for all calls can be set in configuration: ```ruby Callapi::Config.configure do |config| config.default_response_parser = Callapi::Call::Parser::Json::AsObject end ```

Default parser for specific calls can be set in routes:

Callapi::Routes.draw do
  get 'users', parser: Callapi::Call::Parser::Json::AsObject
  get 'version', parser: Callapi::Call::Parser::Plain
end

Parser can be also set for each call instance separately:

get_notes_call.with_response_parser(Callapi::Call::Parser::Json::AsObject).data    #=> [#<DeepStruct id=1, title="Jogging in park">]
get_notes_call.with_response_parser(Callapi::Call::Parser::Plain).data             #=> "[{\n  \"id\": 1, \"title\": \"Jogging in park\"\n}]"

call = get_notes_call
call.with_response_parser(Callapi::Call::Parser::Json::AsObject).data  #=> [#<DeepStruct id=1, title="Jogging in park">]
call.reload # DO NOT FORGET TO CLEAR CACHE!
call.with_response_parser(Callapi::Call::Parser::Plain).data           #=> "[{\n  \"id\": 1, \"title\": \"Jogging in park\"\n}]"

## Configuration

Config options

• api_host
• default_response_parser
• log_level

Callapi::Config.configure do |config|
  config.api_host = 'http://your.api.org/v2'

  # see Parsers section
  config.default_response_parser = Callapi::Call::Parser::Json::AsObject
  
  # :none is only possible option. turns off logs.
  config.log_level = :none
end

## TO DO

• Support HTTPS

## Contributing

1. Fork it ( https://github.com/[my-github-username]/callapi/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request