<?php

	use Kahlan\Plugin\Stub;
	use Kahlan\Plugin\Monkey;

	use api\core\Request;
	use error\core\Error;
	use error\core\Err;

	describe('api/core/Request', function(){

		beforeEach(function(){
			$_SERVER = [
				'REQUEST_METHOD' => 'POST'
			];
		});

		describe('[check] config file', function(){

			it('pass when config file exists', function(){

				expect( file_exists(Request::config_path()) )->toBeTruthy();

			});

			it('pass when we can read the config file', function(){

				expect( @file_get_contents(Request::config_path()) )->not->toBe(false);

			});

			it('pass when the config file is valid json', function(){

				$read = @file_get_contents(Request::config_path());
				expect($read)->not->toBe(false);
				expect( json_decode($read, true) )->not->toBeNull();
				expect( json_decode($read, true) )->toBeA('array');

			});

		});

		describe('__construct(@path, @params)', function(){

			context('with argument combinations', function(){

				it('fail if @path is missing', function(){

					$req = new Request();

					expect($req->error->get())->toBe(Err::MissingPath);

				});

				it('fail if @path is not a string', function(){

					expect('is_string')->toBeCalled();
					$req = new Request(1);

					expect($req->error->get())->toBe(Err::WrongPathModule);

				});

				it('pass if @params is an array', function(){

					unset($_SERVER);
					expect('is_array')->toBeCalled();

					$req = new Request('someString', ['a', 'b']);

					expect($req->error->get())->toBe(Err::UnknownHttpMethod);

				});

				it('pass if @params is not an array (default: [])', function(){

					unset($_SERVER);

					expect('is_array')->toBeCalled();

					$types = [true, false, null, 1, 2.3, -1.2, 0, 'blabla'];

					foreach($types as $type){

						$req = new Request('someString', true);
						expect($req->error->get())->toBe(Err::UnknownHttpMethod);

					}

				});

			});


			context('with config errors', function(){

				it('fail if the config file exists', function(){

					// Request::config_path -> 'aa'
					allow(Request::class)->toReceive('::config_path')->andReturn('invalid_fname');
					expect(Request::config_path())->toBe('invalid_fname');

					// file_exists -> false
					allow('file_exists')->toBeCalled()->andReturn(false);
					expect('file_exists')->toBeCalled();

					$req = new Request('a/b');

					expect($req->error->get())->toBe(Err::UnreachableResource);

				});

				it('fail if the config file cannot be read', function(){

					// file_get_contents -> false
					allow('file_get_contents')->toBeCalled()->andReturn(false);
					expect('file_get_contents')->toBeCalled();

					$req = new Request('a/b');

					expect($req->error->get())->toBe(Err::UnreachableResource);

				});

				it('fail if the json format is not valid', function(){

					// file_exists -> true
					allow('file_exists')->toBeCalled()->andReturn(true);
					expect('file_exists')->toBeCalled();

					// file_get_contents -> false
					allow('file_get_contents')->toBeCalled()->andReturn('{incorrect_json');
					expect('file_get_contents')->toBeCalled();

					// json_decode -> called
					expect('json_decode')->toBeCalled();

					$req = new Request('a/b');

					expect($req->error->get())->toBe(Err::ParsingFailed);

				});

			});

			context('with checks errors', function(){

				it('fail with checkPath() fails', function(){

					allow(Request::class)->toReceive('checkPath')->andRun(function(){
						$this->error->set(Err::UnknownError);
						return false;
					});

					$req = new Request('a/b');

					expect($req->error->get())->toBe(Err::UnknownError);

				});

				it('fail with checkPermission() fails', function(){

					// bypass checkPath();
					allow(Request::class)->toReceive('checkPath')->andReturn(true);

					allow(Request::class)->toReceive('checkPermission')->andRun(function(){
						$this->error->set(Err::UnknownError);
						return false;
					});

					$req = new Request('a/b');

					expect($req->error->get())->toBe(Err::UnknownError);

				});

				it('fail with checkParams() fails', function(){

					// bypass checkPath(); + checkPermission();
					allow(Request::class)->toReceive('checkPath')->andReturn(true);
					allow(Request::class)->toReceive('checkPermission')->andReturn(true);

					allow(Request::class)->toReceive('checkParams')->andRun(function(){
						$this->error->set(Err::UnknownError);
						return false;
					});

					$req = new Request('a/b');

					expect($req->error->get())->toBe(Err::UnknownError);

				});

				it('pass with all checks ok', function(){

					// bypass all checks
					allow(Request::class)->toReceive('checkPath')->andReturn(true);
					allow(Request::class)->toReceive('checkPermission')->andReturn(true);
					allow(Request::class)->toReceive('checkParams')->andReturn(true);

					// bypass buildOptions();
					allow(Request::class)->toReceive('buildOptions')->andReturn(true);

					$req = new Request('a/b');

					expect($req->error->get())->toBe(Err::Success);

				});

			});

		});


		describe('checkPath(@path)', function(){

			it('fail when wrong path format: \'module/method\'', function(){

				$values = ['a-b', 'a /b', 'a/b '];

				foreach($values as $value){

					$req = new Request($value);
					expect($req->error->get())->toBe(Err::WrongPathModule);

				}

			});

			it('pass when valid path format: letter/number/-/_', function(){

				$values = ['a_b-c/d-e_f', 'abc/def', '_a_/_b_'];

				foreach($values as $value){

					$req = new Request($value);
					expect($req->error->get())->not->toBe(Err::WrongPathModule);

				}

			});

			it('fail when unknown module', function(){

				allow('json_decode')->toBeCalled()->andReturn([
					'mo-du_leA' => [],
					'moduleB' => []
				]);

				$values = ['modulea/method', 'MODULEA/method', 'moduleC/method'];

				foreach($values as $value){

					$req = new Request($value);
					expect($req->error->get())->toBe(Err::UnknownModule);

				}

			});

			it('fail when unknown method', function(){

				allow('json_decode')->toBeCalled()->andReturn([
					'mo-du_leA' => [ 'POST::me-th_odA' => [] ],
					'moduleB' => []
				]);

				$values = ['mo-du_leA/me-thodA', 'mo-du_leA/meth_odA', 'mo-du_leA/me-th_oda'];

				foreach($values as $value){

					$req = new Request($value);
					expect($req->error->get())->toBe(Err::UnknownMethod);

				}

			});

		});

	});