package handlers

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

	"github.com/gofiber/fiber/v2"
)

func TestUploadBook(t *testing.T) {
	// This test requires database and Firebase to be initialized
	// Skip if not available
	t.Skip("Skipping UploadBook test - requires database and Firebase")

	app := fiber.New()
	app.Post("/api/books", UploadBook)

	// Create multipart form with test data
	body := &bytes.Buffer{}
	writer := multipart.NewWriter(body)

	// Add form fields
	if err := writer.WriteField("book_name", "Test Book"); err != nil {
		t.Fatalf("Failed to write field: %v", err)
	}
	if err := writer.WriteField("cost", "10.50"); err != nil {
		t.Fatalf("Failed to write field: %v", err)
	}
	if err := writer.WriteField("price", "15.99"); err != nil {
		t.Fatalf("Failed to write field: %v", err)
	}
	if err := writer.WriteField("quantity", "100"); err != nil {
		t.Fatalf("Failed to write field: %v", err)
	}
	if err := writer.WriteField("publisher_author", "Test Publisher"); err != nil {
		t.Fatalf("Failed to write field: %v", err)
	}
	if err := writer.WriteField("category", "Fiction"); err != nil {
		t.Fatalf("Failed to write field: %v", err)
	}

	// Add image file
	part, err := writer.CreateFormFile("image", "test.png")
	if err != nil {
		t.Fatalf("Failed to create form file: %v", err)
	}
	if _, err := part.Write([]byte("fake image data")); err != nil {
		t.Fatalf("Failed to write image data: %v", err)
	}

	if err := writer.Close(); err != nil {
		t.Fatalf("Failed to close writer: %v", err)
	}

	req := httptest.NewRequest("POST", "/api/books", body)
	req.Header.Set("Content-Type", writer.FormDataContentType())

	resp, err := app.Test(req)
	if err != nil {
		t.Fatalf("Test request failed: %v", err)
	}

	if resp.StatusCode != fiber.StatusCreated {
		t.Errorf("Expected status %d, got %d", fiber.StatusCreated, resp.StatusCode)
	}
}

func TestUploadBook_ValidationErrors(t *testing.T) {
	app := fiber.New()
	app.Post("/api/books", UploadBook)

	// Test missing required field
	body := &bytes.Buffer{}
	writer := multipart.NewWriter(body)
	if err := writer.WriteField("book_name", ""); err != nil { // Empty book name
		t.Fatalf("Failed to write field: %v", err)
	}
	if err := writer.Close(); err != nil {
		t.Fatalf("Failed to close writer: %v", err)
	}

	req := httptest.NewRequest("POST", "/api/books", body)
	req.Header.Set("Content-Type", writer.FormDataContentType())

	resp, err := app.Test(req)
	if err != nil {
		t.Fatalf("Test request failed: %v", err)
	}

	if resp.StatusCode != fiber.StatusBadRequest {
		t.Errorf("Expected status %d, got %d", fiber.StatusBadRequest, resp.StatusCode)
	}
}