package main

import (
	"encoding/json"
	"fmt"
	"net/http"
	"net/http/httptest"
	"os"
	"path/filepath"
	"strings"
	"testing"

	"github.com/remogatto/prettytest"
)

var examPayload = `
[
  {
    "id": "fe0a7ee0-f31a-413d-ba81-ab5068bc4c73",
    "created_at": "0001-01-01T00:00:00Z",
    "updated_at": "0001-01-01T00:00:00Z",
    "Participant": {
      "ID": "1234",
      "Firstname": "John",
      "Lastname": "Smith",
      "Token": 111222,
      "Attributes": {
        "class": "1 D LIN"
      }
    },
    "Name": "Test session",
    "Quizzes": [
      {
        "id": "0610939b-a1a3-4d0e-bbc4-2aae0e8ee4b9",
        "created_at": "2023-11-27T17:51:53.910642221+01:00",
        "updated_at": "0001-01-01T00:00:00Z",
        "hash": "",
        "question": {
          "id": "98c0eec9-677f-464e-9e3e-864a859f29a3",
          "created_at": "0001-01-01T00:00:00Z",
          "updated_at": "0001-01-01T00:00:00Z",
          "text": "Question text with #tag1."
        },
        "answers": [
          {
            "id": "1ab5ff1f-74c8-4efc-abdc-d03a3640f3bc",
            "text": "Answer 1"
          },
          {
            "id": "74547724-b905-476f-8cfc-6ee633f92ef3",
            "text": "Answer 2"
          },
          {
            "id": "96c1a8ee-c50c-4ebc-89e4-9f3ca356adbd",
            "text": "Answer 3"
          },
          {
            "id": "16c4b95e-64ce-4666-8cbe-b66fa59eb23b",
            "text": "Answer 4"
          }
        ],
        "tags": [
          {
            "CreatedAt": "0001-01-01T00:00:00Z",
            "UpdatedAt": "0001-01-01T00:00:00Z",
            "DeletedAt": null,
            "name": "#tag1"
          }
        ],
        "correct": {
          "id": "1ab5ff1f-74c8-4efc-abdc-d03a3640f3bc",
          "text": "Answer 1"
        },
        "CorrectPos": 0,
        "type": 0
      },
      {
        "id": "915818c4-b0ce-4efc-8def-7fc8d5fa7454",
        "created_at": "2023-11-27T17:51:53.91077796+01:00",
        "updated_at": "0001-01-01T00:00:00Z",
        "hash": "",
        "question": {
          "id": "70793f0d-2855-4140-814e-40167464424b",
          "created_at": "0001-01-01T00:00:00Z",
          "updated_at": "0001-01-01T00:00:00Z",
          "text": "Another question text with #tag1."
        },
        "answers": [
          {
            "id": "1ab5ff1f-74c8-4efc-abdc-d03a3640f3bc",
            "text": "Answer 1"
          },
          {
            "id": "74547724-b905-476f-8cfc-6ee633f92ef3",
            "text": "Answer 2"
          },
          {
            "id": "96c1a8ee-c50c-4ebc-89e4-9f3ca356adbd",
            "text": "Answer 3"
          },
          {
            "id": "16c4b95e-64ce-4666-8cbe-b66fa59eb23b",
            "text": "Answer 4"
          }
        ],
        "tags": [
          {
            "CreatedAt": "0001-01-01T00:00:00Z",
            "UpdatedAt": "0001-01-01T00:00:00Z",
            "DeletedAt": null,
            "name": "#tag1"
          }
        ],
        "correct": {
          "id": "1ab5ff1f-74c8-4efc-abdc-d03a3640f3bc",
          "text": "Answer 1"
        },
        "CorrectPos": 0,
        "type": 0
      }
    ]
  },
  {
    "id": "12345678-abcd-efgh-ijkl-9876543210ef",
    "created_at": "2023-12-01T12:00:00Z",
    "updated_at": "2023-12-01T12:00:00Z",
    "Participant": {
      "ID": "5678",
      "Firstname": "Jane",
      "Lastname": "Doe",
      "Token": 333444,
      "Attributes": {
        "class": "2 A SCI"
      }
    },
    "Name": "Test session",
    "Quizzes": [
      {
        "id": "22222222-abcd-efgh-ijkl-9876543210ef",
        "created_at": "2023-12-01T12:00:00Z",
        "updated_at": "2023-12-01T12:00:00Z",
        "hash": "",
        "question": {
          "id": "33333333-abcd-efgh-ijkl-9876543210ef",
          "created_at": "2023-12-01T12:00:00Z",
          "updated_at": "2023-12-01T12:00:00Z",
          "text": "Sample question text."
        },
        "answers": [
          {
            "id": "44444444-abcd-efgh-ijkl-9876543210ef",
            "text": "Option 1"
          },
          {
            "id": "55555555-abcd-efgh-ijkl-9876543210ef",
            "text": "Option 2"
          },
          {
            "id": "66666666-abcd-efgh-ijkl-9876543210ef",
            "text": "Option 3"
          },
          {
            "id": "77777777-abcd-efgh-ijkl-9876543210ef",
            "text": "Option 4"
          }
        ],
        "tags": [
          {
            "CreatedAt": "2023-12-01T12:00:00Z",
            "UpdatedAt": "2023-12-01T12:00:00Z",
            "DeletedAt": null,
            "name": "#tag2"
          }
        ],
        "correct": {
          "id": "44444444-abcd-efgh-ijkl-9876543210ef",
          "text": "Option 1"
        },
        "CorrectPos": 0,
        "type": 0
      }
    ]
  }
]
`

type serverTestSuite struct {
	prettytest.Suite
}

func TestRunner(t *testing.T) {
	prettytest.Run(
		t,
		new(serverTestSuite),
	)
}

func (t *serverTestSuite) TestCreate() {

	Dir = "testdata"

	request, _ := http.NewRequest(http.MethodPost, "/create", strings.NewReader(examPayload))
	response := httptest.NewRecorder()

	handler := http.HandlerFunc(createExamSessionHandler)

	handler.ServeHTTP(response, request)

	t.Equal(http.StatusOK, response.Code)

	if !t.Failed() {
		result := map[string]string{}

		err := json.Unmarshal(response.Body.Bytes(), &result)
		t.Nil(err)

		path := filepath.Join(Dir, result["id"])
		_, err = os.Stat(path)
		defer os.RemoveAll(path)

		files, err := os.ReadDir(path)
		t.Nil(err)

		t.Equal(2, len(files))

		t.Nil(err)
	}
}

func (t *serverTestSuite) TestRead() {

	Dir = "testdata"

	request, _ := http.NewRequest(http.MethodPost, "/create", strings.NewReader(examPayload))
	response := httptest.NewRecorder()

	handler := http.HandlerFunc(createExamSessionHandler)

	handler.ServeHTTP(response, request)

	t.Equal(http.StatusOK, response.Code)

	if !t.Failed() {
		result := map[string]string{}

		err := json.Unmarshal(response.Body.Bytes(), &result)
		t.Nil(err)

		path := filepath.Join(Dir, result["id"])
		_, err = os.Stat(path)
		defer os.RemoveAll(path)

		request, _ := http.NewRequest(http.MethodGet, fmt.Sprintf("/%s/%s", result["id"], "111222"), nil)
		response := httptest.NewRecorder()

		handler := http.HandlerFunc(getExamHandler)

		handler.ServeHTTP(response, request)

		t.Equal(http.StatusOK, response.Code)

	}
}