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silverbullet/common/util.ts
2023-08-20 19:54:31 +02:00

75 lines
1.9 KiB
TypeScript

import { SETTINGS_TEMPLATE } from "./settings_template.ts";
import { YAML } from "./deps.ts";
import { SpacePrimitives } from "./spaces/space_primitives.ts";
export function safeRun(fn: () => Promise<void>) {
fn().catch((e) => {
console.error(e);
});
}
export function isMacLike() {
return /(Mac|iPhone|iPod|iPad)/i.test(navigator.platform);
}
// TODO: This is naive, may be better to use a proper parser
const yamlSettingsRegex = /```yaml([^`]+)```/;
export function parseYamlSettings(settingsMarkdown: string): {
[key: string]: any;
} {
const match = yamlSettingsRegex.exec(settingsMarkdown);
if (!match) {
return {};
}
const yaml = match[1];
try {
return YAML.parse(yaml) as {
[key: string]: any;
};
} catch (e: any) {
console.error("Error parsing SETTINGS as YAML", e.message);
return {};
}
}
export async function ensureSettingsAndIndex(
space: SpacePrimitives,
): Promise<any> {
let settingsText: string | undefined;
try {
settingsText = new TextDecoder().decode(
(await space.readFile("SETTINGS.md")).data,
);
} catch (e: any) {
if (e.message === "Not found") {
await space.writeFile(
"SETTINGS.md",
new TextEncoder().encode(SETTINGS_TEMPLATE),
true,
);
} else {
console.error("Error reading settings", e.message);
console.error("Falling back to default settings");
}
settingsText = SETTINGS_TEMPLATE;
// Ok, then let's also check the index page
try {
await space.getFileMeta("index.md");
} catch {
await space.writeFile(
"index.md",
new TextEncoder().encode(
`Hello! And welcome to your brand new SilverBullet space!
<!-- #use [[!silverbullet.md/Getting Started]] -->
Loading some onboarding content for you (but doing so does require a working internet connection)...
<!-- /use -->`,
),
);
}
}
return parseYamlSettings(settingsText);
}