package taskcontroller_test

import (
	"bytes"
	"errors"
	"mime/multipart"
	"net/http"
	"net/http/httptest"
	"testing"

	"github.com/go-chi/chi/v5"

	"code.alt-gnome.ru/aides-infra/aides-repo-api/internal/controllers/taskcontroller"
	"code.alt-gnome.ru/aides-infra/aides-repo-api/internal/services/taskservice"
)

func TestUpload(t *testing.T) {
	tests := []struct {
		name           string
		taskID         string
		files          []byte
		mockService    *TaskServiceMock
		expectedStatus int
	}{
		{
			name:   "Valid upload",
			taskID: "1",
			files:  []byte("test file content"), // можно заменить на реальный файл, если нужно
			mockService: &TaskServiceMock{
				UploadFunc: func(input *taskservice.TaskUploadInput) error {
					return nil
				},
			},
			expectedStatus: http.StatusOK,
		},
		{
			name:           "Invalid taskID",
			taskID:         "",
			files:          []byte("test file content"),
			mockService:    &TaskServiceMock{},
			expectedStatus: http.StatusBadRequest,
		},
		/*
			TODO:

			{
				name:   "File too large",
				taskID: "1",
				files:  []byte("test file content"),
				mockService: &TaskServiceMock{
					UploadFunc: func(input *taskservice.TaskUploadInput) error {
						return nil
					},
				},
				expectedStatus: http.StatusBadRequest,
			},
		*/
		{
			name:   "Error during file upload",
			taskID: "1",
			files:  []byte("test file content"),
			mockService: &TaskServiceMock{
				UploadFunc: func(input *taskservice.TaskUploadInput) error {
					return errors.New("internal upload error")
				},
			},
			expectedStatus: http.StatusInternalServerError,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			controller := taskcontroller.New(tt.mockService)

			r := chi.NewRouter()
			r.Post("/tasks/{taskID}/upload", controller.Upload)

			body := &bytes.Buffer{}
			writer := multipart.NewWriter(body)
			part, err := writer.CreateFormFile("files", "file.txt")
			if err != nil {
				t.Fatalf("Failed to create form file: %v", err)
			}
			part.Write(tt.files)
			writer.Close()

			ts := httptest.NewServer(r)
			defer ts.Close()

			req, err := http.NewRequest(http.MethodPost, ts.URL+"/tasks/"+tt.taskID+"/upload", body)
			if err != nil {
				t.Fatalf("Failed to create request: %v", err)
			}
			req.Header.Set("Content-Type", writer.FormDataContentType())

			resp, err := ts.Client().Do(req)
			if err != nil {
				t.Fatalf("Failed to execute request: %v", err)
			}
			defer resp.Body.Close()

			if status := resp.StatusCode; status != tt.expectedStatus {
				t.Errorf("handler returned wrong status code: got %v want %v", status, tt.expectedStatus)
			}
		})
	}
}