Amazonで本の情報をRoam Researchにコピーするブックマークレットを作った

javascript:void((function(){var s = document.createElement("script");s.type = "text/javascript";s.src = "https://roam-kit.netlify.app/amazon2roam.js";document.getElementsByTagName("head")[0].appendChild(s);})());

<link rel="canonical" href="https://www.amazon.co.jp/title/dp/ISBN">

const copyToClipboard = (text: string) => {
 const dummy = document.createElement("textarea");
 document.body.appendChild(dummy);
 dummy.value = text;
 dummy.select();
 document.execCommand("copy");
 document.body.removeChild(dummy);
};

const putIndent = (s: string, n: number = 2) => {
 return `${" ".repeat(n)}${s}`;
};

const roamfy = (d: Date) => {
 const ord = (n: number) =>
   n +
   (n > 0
     ? ["th", "st", "nd", "rd"][(n > 3 && n < 21) || n % 10 > 3 ? 0 : n % 10]
     : "");
 const year = d.getFullYear();
 const month = d.toLocaleString("en-us", { month: "long" });
 const date = ord(d.getDate());
 return `${month} ${date}, ${year}`;
};

(async () => {
 const toDate = (YYYYMMDD: string) => {
   const year = Number(YYYYMMDD.substr(0, 4));
   const month = Number(YYYYMMDD.substr(4, 2));
   const day = Number(YYYYMMDD.substr(6, 2));
   return new Date(year, month, day);
 };

 const canonicalUrl =
   document.querySelector<HTMLLinkElement>('link[rel="canonical"]')?.href ??
   "";
 const asin = canonicalUrl.split("/").pop();
 const response = await fetch("https://api.openbd.jp/v1/get?isbn=" + asin);
 const [data] = await response.json();
 if (!data) {
   alert("版元ドットコムにデータがありませんでした。");
   return;
 }
 const {
   onix: {
     CollateralDetail: { TextContent: bookInfoList },
     DescriptiveDetail: {
       TitleDetail: {
         TitleElement: {
           TitleText: { content: title = "" } = { content: "" },
           Subtitle: { content: subtitle = "" } = { content: "" },
         },
       },
       Contributor: contributors = [],
     },
     PublishingDetail: {
       Publisher: { PublisherName: publisher = "" } = { PublisherName: "" },
       PublishingDate: [{ Date: publishingDate = "" } = { Date: "" }],
     },
   },
 } = data;

 const isToc = (m: { TextType: string }) => m.TextType === "04";
 const toc = bookInfoList.find(isToc)?.Text.split("\n") ?? [];
 const bookDescriptions =
   bookInfoList
     ?.filter((m: any) => !isToc(m))
     ?.map((m: { Text: string }) => m.Text) ?? [];

 const authorsInfo = contributors.map(
   (m: { PersonName: { content: string }; BiographicalNote: string }) => ({
     name: m.PersonName.content ?? "",
     bio: m.BiographicalNote?.replace("\n", " ") ?? "",
   })
 );

 const res = [
   `[[Book/${title} ${subtitle}]]`,
   putIndent(`Source:: ${canonicalUrl}`, 2),
   putIndent(`ISBN:: ${asin}`, 2),
   putIndent(`Authors::`, 2),
   ...authorsInfo.map((m: { name: string; bio: string }) =>
     [putIndent(`[[${m.name}]]`, 4), putIndent(m.bio, 6)].join("\n")
   ),
   putIndent(`Publisher:: ${publisher}`, 2),
   putIndent(`Published:: [[${roamfy(toDate(publishingDate))}]]`, 2),
   putIndent(`Accessed:: [[${roamfy(new Date())}]]`, 2),
   putIndent(`Tags:: #Book  `, 2),
   putIndent(`Notes:: `, 2),
   putIndent(`Related:: `, 2),
   putIndent(`Toc::`, 2),
   ...toc.map((m: string) => putIndent(m, 4)),
   putIndent("Descriptions::", 2),
   ...bookDescriptions.map((m: string) => [putIndent(m, 4)]),
 ].join("\n");

 copyToClipboard(res);
})();