Corrections dans l'obtention des couvertures.

content/latex/bibliographie/dan.bib

@@ -11,4 +11,5 @@ @book { [DAN]
   buy = "https://url.skyost.eu/agreg-dan",
   url = "https://www.deboecksuperieur.com/ouvrage/9782807332195-mathematiques-pour-l-agregation-analyse-et-probabilites",
   comment = "Véritable pendant de la version algèbre et géométrie, ce livre est très utile pour réviser la partie analyse du programme de prépa ainsi que pour remplir les leçons de même niveau."
+  altcover = "https://m.media-amazon.com/images/I/71---uqzNiL._SL1500_.jpg"
 }

modules/books-cover-fetcher.ts

@@ -173,14 +173,14 @@ abstract class DownloadSource {
   async downloadImage(book: Book, url: string, destinationFile: string): Promise<boolean> {
     try {
       const blob = await ofetch(url, { responseType: 'blob' })
-      let description = book.title
-      if (book.subtitle) {
-        description += ` ${book.subtitle}`
-      }
-      if (book.edition) {
-        description += `, Éd. ${book.edition}`
-      }
       if (blob.type.startsWith('image/') && blob.size > 0) {
+        let description = book.title
+        if (book.subtitle) {
+          description += ` ${book.subtitle}`
+        }
+        if (book.edition) {
+          description += `, Éd. ${book.edition}`
+        }
         const buffer = Buffer.from(await blob.arrayBuffer())
         await sharp(buffer)
           .resize(null, 250)
@@ -273,7 +273,7 @@ class OpenGraphImageDownloadSource extends DownloadSource {
 
   override async getBookCoverUrl(book: Book): Promise<string | null> {
     try {
-      const root: HTMLElement = await ofetch(book.website, { parseResponse: parse })
+      const root: HTMLElement = await ofetch(book.website, { parseResponse: parse, timeout: 10000 })
       const image = root.querySelector('meta[property="og:image"]')?.getAttribute('content')
       return image ?? null
     }
@@ -298,4 +298,20 @@ class PreviousBuildDownloadSource extends DownloadSource {
   override getBookCoverUrl(book: Book): Promise<string | null> {
     return Promise.resolve(`${this.siteUrl}${this.booksImagesUrl}${book.isbn10}.jpg`)
   }
+
+  override async downloadImage(book: Book, url: string, destinationFile: string): Promise<boolean> {
+    try {
+      const blob = await ofetch(url, { responseType: 'blob' })
+      if (blob.type === 'image/jpeg' && blob.size > 0) {
+        const buffer = Buffer.from(await blob.arrayBuffer())
+        fs.writeFileSync(destinationFile, buffer)
+        return true
+      }
+      return false
+    }
+    catch (ex) {
+      logger.warn(ex)
+    }
+    return false
+  }
 }