MockServer

class SimpleMockServer {
	private File dir
	private List responses = []
	private FilePointer pointer

	void loadFiles() {
	    responses = new JsonReader(dir).read()
	    pointer = new FilePointer(responses.size())
	}

	void run() {
		//
	}

	def getResponse() {
		responses[pointer.next()]
	}
}

class Launcher {
	static void main(String[] args) {
        def dir = '/Users/bikisuke/sandbox/gradle/simple-mock-server/data'
//        def dir = args[0]
		def dataDir = new File(dir)
		def server = new SimpleMockServer(dir:dataDir)
		server.loadFiles()
		server.run()
	}
}

class FilePointer {
	int maxFileSize
	int current = -1

	FilePointer(maxFileSize) {
		this.maxFileSize = maxFileSize
	}

	int next() {
		if(maxFileSize == 0) new RuntimeException()
		current == maxFileSize-1? reset() : ++current
	}

	int reset() {
		current = 0
		current
	}
}

import groovy.json.JsonSlurper

class JsonReader {
    def slurper = new JsonSlurper()
    def dataDir

    List read() {
    	def responses = []
    	dataDir.eachFile { file ->
            responses << slurper.parseText(file.text)
        }
        responses
    }
}