import fetch from "node-fetch";
import fetchEbayUserToken from "../utils/fetchEbayUserToken.js";

export const createAndListItem = async (req, res) => {
  const {
    sku,
    marketplaceId,
    format,
    availableQuantity,
    categoryId,
    condition,
    listingDescription,
    pricingSummary,
    merchantLocationKey,
    quantityLimitPerBuyer,
    product, // Extract the entire product object
    packageWeightAndSize, // Adjusted to packageWeightAndSize from the refined payload
    imageUrls,
  } = req.body;

  const token = await fetchEbayUserToken(req, res); // Get the eBay user token


  let dynamicAspects = {};
  for (const [key, value] of Object.entries(product.aspects)) {
    dynamicAspects[key] = Array.isArray(value) ? value : [value];
  }
  
  try {
    // Create the inventory item
    const inventoryItemPayload = {
      sku,
      condition,
      product: {
        title: product.title.substring(0, 80), // Utilizing product title
        brand: product.brand, // Using brand from the product object
        description: product.description, // Using product description
        imageUrls: product.imageUrls, // Using all imageUrls from product
        aspects: dynamicAspects
      },
      availability: {
        shipToLocationAvailability: {
          quantity: availableQuantity,
        },
      },
      // Package weight and dimensions, adjusted to the new structure
      packageWeightAndSize: {
        weight: {
          value: parseFloat(packageWeightAndSize.weight.value),
          unit: packageWeightAndSize.weight.unit,
        },
        dimensions: {
          length: parseFloat(packageWeightAndSize.dimensions.length),
          width: parseFloat(packageWeightAndSize.dimensions.width),
          height: parseFloat(packageWeightAndSize.dimensions.height),
          unit: packageWeightAndSize.dimensions.unit,
        },
      },
    };

    const createItemResponse = await fetch(
      `https://api.ebay.com/sell/inventory/v1/inventory_item/${sku}`,
      {
        method: "PUT",
        headers: {
          "Content-Type": "application/json",
          "Content-Language": "en-US",
          "Authorization": `Bearer ${token}`,
          "Accept": "application/json",
        },
        body: JSON.stringify(inventoryItemPayload),
      }
    );

    // Optionally, you can parse the response body if eBay's API returns useful information in it
    const itemResponseData = await createItemResponse;
    console.log(itemResponseData);

    // 2. Create the offer for the inventory item
    const offerPayload = {
      sku,
      marketplaceId,
      format,
      listing: {
        categoryId,
        listingDescription,
        merchantLocationKey,
      },
      pricingSummary,
      quantityLimitPerBuyer,
    };

    const offerResponse = await fetch(
      `https://api.ebay.com/sell/inventory/v1/offer`,
      {
        method: "POST",
        headers: {
          "Content-Type": "application/json",
          "Content-Language": "en-US",
          Authorization: `Bearer ${token}`,
        },
        body: JSON.stringify(offerPayload),
      }
    );

    if (!offerResponse.ok) {
      // Handle error in creating the offer
      const errorBody = await offerResponse.text();
      throw new Error(
        `Failed to create offer: ${offerResponse.status} - ${errorBody}`
      );
    }

    const offerData = await offerResponse.json();
    const offerId = offerData.offerId;

    // 3. Publish the offer to convert it into a live listing
    await fetch(
      `https://api.ebay.com/sell/inventory/v1/offer/${offerId}/publish/`,
      {
        method: "POST",
        headers: {
          Authorization: `Bearer ${token}`,
          "Content-Type": "application/json",
        },
      }
    );

    res.json({ success: true, message: "Item listed successfully" });
  } catch (error) {
    console.error("Error in createAndListItem endpoint:", error);
    res.status(500).json({
      success: false,
      message: "Failed to create and list item on eBay",
      error: error.message,
    });
  }
};

export const deleteItemBySku = async (req, res) => {
  const { sku } = req.params; // Assuming SKU is provided as a URL parameter

  try {
    const token = await fetchEbayUserToken(req, res); // Get the eBay user token

    // Perform the deletion of the inventory item
    const deleteResponse = await fetch(`https://api.ebay.com/sell/inventory/v1/inventory_item/${sku}`, {
      method: "DELETE",
      headers: {
        "Authorization": `Bearer ${token}`,
        "Content-Type": "application/json",
        "Accept": "application/json",
      },
    });

    if (!deleteResponse.ok) {
      // Handle unsuccessful deletion
      const errorBody = await deleteResponse.text();
      throw new Error(`Failed to delete inventory item: ${deleteResponse.status} - ${errorBody}`);
    }

    // Successfully deleted the item
    res.json({ success: true, message: `Item with SKU: ${sku} deleted successfully.` });
  } catch (error) {
    console.error("Error in deleteItemBySku endpoint:", error);
    res.status(500).json({
      success: false,
      message: `Failed to delete item with SKU: ${sku} from eBay`,
      error: error.message,
    });
  }
};

export const getAllInventory = async (req, res) => {
  const limit = req.query.limit || '100'; // Set default limit
  const offset = req.query.offset || '0'; // Set default offset

  try {
    const token = await fetchEbayUserToken(req, res); // Assuming fetchEbayUserToken doesn't need req, res passed and handles token internally

    const response = await fetch(`https://api.ebay.com/sell/inventory/v1/inventory_item?limit=${limit}&offset=${offset}`, {
      method: 'GET',
      headers: {
        "Content-Type": "application/json",
        "Authorization": `Bearer ${token}`,
        "Accept-Language": "en-US",
      },
    });

    if (!response.ok) {
      // If the response is not okay, throw an error with status and statusText
      throw new Error(`Failed to retrieve inventory items: ${response.status} ${response.statusText}`);
    }

    const inventoryItems = await response.json(); // Parsing the JSON body of the response
    res.json(inventoryItems); // Sending the inventory items back to the client
  } catch (error) {
    console.error('Error fetching inventory:', error);
    res.status(500).json({
      error: 'Internal Server Error',
      message: error.message,
    });
  }
};