package file

import (
	"encoding/json"
	"fmt"
	"io"
	"os"

	"git.andreafazzi.eu/andrea/probo/pkg/models"
	"git.andreafazzi.eu/andrea/probo/pkg/store"
	"github.com/remogatto/prettytest"
)

type examTestSuite struct {
	prettytest.Suite
}

func (t *examTestSuite) TestCreate() {
	participantStore, err := NewParticipantFileStore(
		&FileStoreConfig[*models.Participant, *store.ParticipantStore]{
			FilePathConfig: FilePathConfig{"testdata/exams/participants", "participant", ".json"},
			IndexDirFunc:   DefaultIndexDirFunc[*models.Participant, *store.ParticipantStore],
			CreateEntityFunc: func() *models.Participant {
				return &models.Participant{
					Attributes: make(map[string]string),
				}
			},
		},
	)

	t.Nil(err)

	quizStore, err := NewQuizFileStore(
		&FileStoreConfig[*models.Quiz, *store.QuizStore]{
			FilePathConfig: FilePathConfig{"testdata/exams/quizzes", "quiz", ".md"},
			IndexDirFunc:   DefaultQuizIndexDirFunc,
		},
	)

	t.Nil(err)

	if !t.Failed() {
		t.Equal(3, len(participantStore.ReadAll()))

		examStore, err := NewDefaultExamFileStore()
		t.Nil(err)

		if !t.Failed() {
			g := new(models.Group)
			c := new(models.Collection)

			participants := participantStore.Storer.FilterInGroup(g, map[string]string{"class": "1 D LIN"})
			quizzes := quizStore.Storer.FilterInCollection(c, map[string]string{"tags": "#tag1"})

			for _, p := range participants {
				e := new(models.Exam)
				e.Participant = p
				e.Quizzes = quizzes

				_, err = examStore.Create(e)
				t.Nil(err)

				defer os.Remove(examStore.GetPath(e))

				examFromDisk, err := readExamFromJSON(e.GetID())
				t.Nil(err)

				if !t.Failed() {
					t.Not(t.Nil(examFromDisk.Participant))
					if !t.Failed() {
						t.Equal("Smith", examFromDisk.Participant.Lastname)
						t.Equal(2, len(examFromDisk.Quizzes))
					}
				}
			}
		}
	}
}

func readExamFromJSON(examID string) (*models.Exam, error) {
	// Build the path to the JSON file
	jsonPath := fmt.Sprintf("testdata/exams/exam_%s.json", examID)

	// Open the JSON file
	file, err := os.Open(jsonPath)
	if err != nil {
		return nil, fmt.Errorf("failed to open JSON file: %w", err)
	}
	defer file.Close()

	// Read the JSON data from the file
	jsonData, err := io.ReadAll(file)
	if err != nil {
		return nil, fmt.Errorf("failed to read JSON data: %w", err)
	}

	// Unmarshal the JSON data into an Exam object
	var exam models.Exam
	if err := json.Unmarshal(jsonData, &exam); err != nil {
		return nil, fmt.Errorf("failed to parse JSON data: %w", err)
	}

	return &exam, nil
}