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silverbullet/server/disk_storage.ts

92 lines
2.5 KiB
TypeScript

import { readdir, readFile, stat, unlink, writeFile } from "fs/promises";
import * as path from "path";
import { PageMeta } from "./types";
export class DiskStorage {
rootPath: string;
constructor(rootPath: string) {
this.rootPath = rootPath;
}
async listPages(): Promise<PageMeta[]> {
let fileNames: PageMeta[] = [];
const walkPath = async (dir: string) => {
let files = await readdir(dir);
for (let file of files) {
const fullPath = path.join(dir, file);
let s = await stat(fullPath);
if (s.isDirectory()) {
await walkPath(fullPath);
} else {
if (path.extname(file) === ".md") {
fileNames.push({
name: fullPath.substring(
this.rootPath.length + 1,
fullPath.length - 3
),
lastModified: s.mtime.getTime(),
});
}
}
}
};
await walkPath(this.rootPath);
return fileNames;
}
async readPage(pageName: string): Promise<{ text: string; meta: PageMeta }> {
const localPath = path.join(this.rootPath, pageName + ".md");
try {
const s = await stat(localPath);
return {
text: await readFile(localPath, "utf8"),
meta: {
name: pageName,
lastModified: s.mtime.getTime(),
},
};
} catch (e) {
// console.error("Error while writing page", pageName, e);
throw Error(`Could not read page ${pageName}`);
}
}
async writePage(pageName: string, text: string): Promise<PageMeta> {
let localPath = path.join(this.rootPath, pageName + ".md");
try {
await writeFile(localPath, text);
// console.log(`Wrote to ${localPath}`);
const s = await stat(localPath);
return {
name: pageName,
lastModified: s.mtime.getTime(),
};
} catch (e) {
console.error("Error while writing page", pageName, e);
throw Error(`Could not write ${pageName}`);
}
}
async getPageMeta(pageName: string): Promise<PageMeta> {
let localPath = path.join(this.rootPath, pageName + ".md");
try {
const s = await stat(localPath);
return {
name: pageName,
lastModified: s.mtime.getTime(),
};
} catch (e) {
console.error("Error while getting page meta", pageName, e);
throw Error(`Could not get meta for ${pageName}`);
}
}
async deletePage(pageName: string) {
let localPath = path.join(this.rootPath, pageName + ".md");
await unlink(localPath);
}
}