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Update LinkThumbnailWidgetParams.ts

This commit is contained in:
kim365my 2024-04-09 17:55:36 +09:00
parent 8702a38922
commit aabb4302b0
1 changed files with 25 additions and 22 deletions
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43
src/LinkThumbnailWidgetParams.ts
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@ -24,29 +24,32 @@ function getLocalOgData(url: string) {
async function saveLocalOgData(url:string, ogData: ogData) { async function saveLocalOgData(url:string, ogData: ogData) {
const imgUrl = ogData.ogImage; const imgUrl = ogData.ogImage;
const lastDot = imgUrl.lastIndexOf("."); if (imgUrl !== "") {
const imgType = imgUrl.substring(lastDot, imgUrl.length).toLowerCase(); const lastDot = imgUrl.lastIndexOf(".");
let imgType = imgUrl.substring(lastDot + 1, imgUrl.length).toLowerCase();
const file = await requestUrl({url:imgUrl, contentType: `image/${imgType}`}); const file = await requestUrl({url:imgUrl, contentType: `image/${imgType}`});
const fileArrayBuffer = file.arrayBuffer; const fileArrayBuffer = file.arrayBuffer;
// 방법 1) blob 변환 // 방법 1) blob 변환
// const fileBlob = new Blob([fileArrayBuffer], { type: `image/${imgType}`}); // const fileBlob = new Blob([fileArrayBuffer], { type: `image/${imgType}`});
// // 파일 리더 생성 // // 파일 리더 생성
// const reader = new FileReader(); // const reader = new FileReader();
// reader.readAsDataURL(fileBlob); // reader.readAsDataURL(fileBlob);
// let base64String = ""; // let base64String = "";
// reader.onloadend = () => { // reader.onloadend = () => {
// const base64 = reader.result; // const base64 = reader.result;
// if (typeof base64 === "string") base64String = base64; // if (typeof base64 === "string") base64String = base64;
// }; // };
// 방법 2) ArrayBuffer 자체를 base64로 변환 // 방법 2) ArrayBuffer 자체를 base64로 변환
const uint8 = new Uint8Array(fileArrayBuffer); const uint8 = new Uint8Array(fileArrayBuffer);
const base64String = btoa(uint8.reduce((data, byte)=> { const base64String = btoa(uint8.reduce((data, byte)=> {
return data + String.fromCharCode(byte); return data + String.fromCharCode(byte);
}, '')); }, ''));
ogData.ogImage = `data:image/${imgType};charset=utf-8;base64,` + base64String; if (imgType.includes("svg")) imgType += "+xml";
ogData.ogImage = `data:image/${imgType};charset=utf-8;base64,` + base64String;
}
// 저장하기 전에 img 데이터를 url-> blob -> base64로 변환 후 저장 // 저장하기 전에 img 데이터를 url-> blob -> base64로 변환 후 저장
localStorage.setItem(OGDATACHACHE + url, JSON.stringify(ogData)); localStorage.setItem(OGDATACHACHE + url, JSON.stringify(ogData));