69 lines
2.0 KiB
TypeScript
69 lines
2.0 KiB
TypeScript
type FunctionReturn = {
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fileBase64?: string;
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fileBase64Full?: string;
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fileName?: string;
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fileSize?: number;
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fileType?: string;
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};
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type Param = {
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inputFile: File;
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allowedRegex?: RegExp;
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};
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/**
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* Input File to base64
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* ==============================================================================
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*
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* @description This function takes in a *SINGLE* input file from a HTML file input element.
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* HTML file input elements usually return an array of input objects, so be sure to select the target
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* file from the array.
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*/
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export default async function inputFileToBase64({
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inputFile,
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allowedRegex,
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}: Param): Promise<FunctionReturn> {
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const allowedTypesRegex = allowedRegex ? allowedRegex : /image\/*|\/pdf/;
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if (!inputFile?.type?.match(allowedTypesRegex)) {
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window.alert(
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`We currently don't support ${inputFile.type} file types. Support is coming soon. For now we support only images and PDFs.`
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);
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return {
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fileName: inputFile.name,
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};
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}
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try {
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let fileName = inputFile.name.replace(/\..*/, "");
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const fileData: string | undefined = await new Promise(
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(resolve, reject) => {
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var reader = new FileReader();
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reader.readAsDataURL(inputFile);
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reader.onload = function () {
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resolve(reader.result?.toString());
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};
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reader.onerror = function (/** @type {*} */ error: any) {
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console.log("Error: ", error.message);
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};
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}
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);
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return {
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fileBase64: fileData?.replace(/.*?base64,/, ""),
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fileBase64Full: fileData,
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fileName: fileName,
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fileSize: inputFile.size,
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fileType: inputFile.type,
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};
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} catch (error: any) {
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console.log("File Processing Error! =>", error.message);
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return {
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fileName: inputFile.name,
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};
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}
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}
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