package main

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

	"git.andreafazzi.eu/andrea/probo/lib/models"
	"github.com/lmittmann/tint"
	"github.com/remogatto/prettytest"
)

var examPayload = `
{
    "ID": "fe0a7ee0-f31a-413d-f123-ab5068bcaaaa",
    "Name": "Test session",
    "Exams": {
	"111222": {
	    "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"
		}
	    },
	    "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
		}
	    ]
	}
    },
    "333444": {
	"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"
	    }
	},
	"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) {
	slog.SetDefault(slog.New(
		tint.NewHandler(os.Stderr, &tint.Options{
			Level:      slog.LevelError,
			TimeFormat: time.Kitchen,
		}),
	))

	prettytest.Run(
		t,
		new(serverTestSuite),
	)
}

func (t *serverTestSuite) TestCreate() {

	DefaultDataDir = "testdata"

	s, err := NewDefaultServer()
	t.Nil(err)

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

		handler := http.HandlerFunc(s.createExamSessionHandler)

		handler.ServeHTTP(response, request)

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

		if !t.Failed() {
			var session *models.Session

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

			path := filepath.Join(GetDefaultSessionDir(), "session_fe0a7ee0-f31a-413d-f123-ab5068bcaaaa.json")

			_, err = os.Stat(path)
			t.Nil(err)

			defer os.Remove(path)

			t.Equal("fe0a7ee0-f31a-413d-f123-ab5068bcaaaa", session.ID)

		}
	}
}

func (t *serverTestSuite) TestRead() {

	DefaultDataDir = "testdata"

	s, err := NewDefaultServer()
	t.Nil(err)

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

		handler := http.HandlerFunc(s.createExamSessionHandler)

		handler.ServeHTTP(response, request)

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

		if !t.Failed() {
			var session *models.Session

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

			path := filepath.Join(GetDefaultSessionDir(), "session_fe0a7ee0-f31a-413d-f123-ab5068bcaaaa.json")
			_, err = os.Stat(path)
			t.Nil(err)

			if !t.Failed() {
				defer os.RemoveAll(path)

				request, _ := http.NewRequest(http.MethodGet, fmt.Sprintf("/%s/%s", session.ID, "111222"), nil)
				response := httptest.NewRecorder()

				handler := http.HandlerFunc(s.getExamHandler)

				handler.ServeHTTP(response, request)

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

			}
		}
	}
}