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files.js
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files.js
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import fs from "fs";
export function writeToFile(collectionId, ids) {
const defaultPrice = 1;
const out = ids
.sort((a,b) => a - b)
.map((id) => `${id},${defaultPrice}`)
.join("\n");
const filename = `collection_${collectionId}.csv`;
fs.writeFileSync(
filename,
`token id,price
${out}`
);
console.log(`saved to file: ${filename}`);
}
export function loadFromFile(collectionId) {
const filename = `collection_${collectionId}.csv`;
if (!fs.existsSync(filename)) {
throw new Error(`File ${filename} not found`);
}
return fs
.readFileSync(filename)
.toString()
.trim()
.split("\n")
.slice(1)
.map((line) => {
const data = line.split(",");
const tokenId = +data[0];
if (!tokenId) {
throw new Error("Invalid tokenId in csv file");
}
const price = +data[1];
if (!price) {
throw new Error("Invalid price in csv file");
}
return {
tokenId,
price,
};
});
}