/*
 * This loader is responsible for extracting the metadata image info for rendering in html
 */ import { existsSync, promises as fs } from "fs";
import path from "path";
import loaderUtils from "next/dist/compiled/loader-utils3";
import { getImageSize } from "../../../server/image-optimizer";
import { imageExtMimeTypeMap } from "../../../lib/mime-type";
import { WEBPACK_RESOURCE_QUERIES } from "../../../lib/constants";
import { normalizePathSep } from "../../../shared/lib/page-path/normalize-path-sep";
import { getLoaderModuleNamedExports } from "./utils";
// [NOTE] For turbopack
// refer loader_tree's write_static|dynamic_metadata for corresponding features
async function nextMetadataImageLoader(content) {
    const options = this.getOptions();
    const { type, segment, pageExtensions, basePath } = options;
    const { resourcePath, rootContext: context } = this;
    const { name: fileNameBase, ext } = path.parse(resourcePath);
    const useNumericSizes = type === "twitter" || type === "openGraph";
    let extension = ext.slice(1);
    if (extension === "jpg") {
        extension = "jpeg";
    }
    const opts = {
        context,
        content
    };
    // No hash query for favicon.ico
    const contentHash = type === "favicon" ? "" : loaderUtils.interpolateName(this, "[contenthash]", opts);
    const interpolatedName = loaderUtils.interpolateName(this, "[name].[ext]", opts);
    const isDynamicResource = pageExtensions.includes(extension);
    const pageSegment = isDynamicResource ? fileNameBase : interpolatedName;
    const hashQuery = contentHash ? "?" + contentHash : "";
    const pathnamePrefix = normalizePathSep(path.join(basePath, segment));
    if (isDynamicResource) {
        const exportedFieldsExcludingDefault = (await getLoaderModuleNamedExports(resourcePath, this)).filter((name)=>name !== "default");
        // re-export and spread as `exportedImageData` to avoid non-exported error
        return `\
    import {
      ${exportedFieldsExcludingDefault.map((field)=>`${field} as _${field}`).join(",")}
    } from ${JSON.stringify(// This is an arbitrary resource query to ensure it's a new request, instead
        // of sharing the same module with next-metadata-route-loader.
        // Since here we only need export fields such as `size`, `alt` and
        // `generateImageMetadata`, avoid sharing the same module can make this entry
        // smaller.
        resourcePath + "?" + WEBPACK_RESOURCE_QUERIES.metadataImageMeta)}
    import { fillMetadataSegment } from 'next/dist/lib/metadata/get-metadata-route'

    const imageModule = {
      ${exportedFieldsExcludingDefault.map((field)=>`${field}: _${field}`).join(",")}
    }

    export default async function (props) {
      const { __metadata_id__: _, ...params } = props.params
      const imageUrl = fillMetadataSegment(${JSON.stringify(pathnamePrefix)}, params, ${JSON.stringify(pageSegment)})

      const { generateImageMetadata } = imageModule

      function getImageMetadata(imageMetadata, idParam) {
        const data = {
          alt: imageMetadata.alt,
          type: imageMetadata.contentType || 'image/png',
          url: imageUrl + (idParam ? ('/' + idParam) : '') + ${JSON.stringify(hashQuery)},
        }
        const { size } = imageMetadata
        if (size) {
          ${type === "twitter" || type === "openGraph" ? "data.width = size.width; data.height = size.height;" : 'data.sizes = size.width + "x" + size.height;'}
        }
        return data
      }

      if (generateImageMetadata) {
        const imageMetadataArray = await generateImageMetadata({ params })
        return imageMetadataArray.map((imageMetadata, index) => {
          const idParam = (imageMetadata.id || index) + ''
          return getImageMetadata(imageMetadata, idParam)
        })
      } else {
        return [getImageMetadata(imageModule, '')]
      }
    }`;
    }
    const imageSize = await getImageSize(content, extension).catch((err)=>err);
    if (imageSize instanceof Error) {
        const err = imageSize;
        err.name = "InvalidImageFormatError";
        throw err;
    }
    const imageData = {
        ...extension in imageExtMimeTypeMap && {
            type: imageExtMimeTypeMap[extension]
        },
        ...useNumericSizes && imageSize.width != null && imageSize.height != null ? imageSize : {
            sizes: // For SVGs, skip sizes and use "any" to let it scale automatically based on viewport,
            // For the images doesn't provide the size properly, use "any" as well.
            // If the size is presented, use the actual size for the image.
            extension !== "svg" && imageSize.width != null && imageSize.height != null ? `${imageSize.width}x${imageSize.height}` : "any"
        }
    };
    if (type === "openGraph" || type === "twitter") {
        const altPath = path.join(path.dirname(resourcePath), fileNameBase + ".alt.txt");
        if (existsSync(altPath)) {
            imageData.alt = await fs.readFile(altPath, "utf8");
        }
    }
    return `\
  import { fillMetadataSegment } from 'next/dist/lib/metadata/get-metadata-route'

  export default (props) => {
    const imageData = ${JSON.stringify(imageData)}
    const imageUrl = fillMetadataSegment(${JSON.stringify(pathnamePrefix)}, props.params, ${JSON.stringify(pageSegment)})

    return [{
      ...imageData,
      url: imageUrl + ${JSON.stringify(type === "favicon" ? "" : hashQuery)},
    }]
  }`;
}
export const raw = true;
export default nextMetadataImageLoader;

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