Files
class/scripts/update-photo-topic-from-issue.mjs
2026-05-03 10:31:05 +08:00

124 lines
3.7 KiB
JavaScript

import { readFileSync, writeFileSync } from "node:fs";
import { relative, resolve } from "node:path";
const issueBody = process.env.ISSUE_BODY ?? "";
const topicRoot = resolve(process.env.PHOTO_TOPIC_ROOT ?? "src/data/photo-topics");
const fields = ["topic", "title", "caption", "image", "cover"];
const requiredFields = ["topic", "title", "caption", "image"];
const sectionAliases = new Map(fields.map((field) => [field.toLowerCase(), field]));
function normalizeValue(value) {
const trimmed = value.trim();
return trimmed === "_No response_" ? "" : trimmed;
}
function parseIssueForm(body) {
const result = {};
const sectionPattern = /^###\s+(.+?)\s*$/gm;
const matches = [...body.matchAll(sectionPattern)];
for (let index = 0; index < matches.length; index += 1) {
const rawLabel = matches[index][1].trim().toLowerCase();
const field = sectionAliases.get(rawLabel);
if (!field) continue;
const start = matches[index].index + matches[index][0].length;
const end = index + 1 < matches.length ? matches[index + 1].index : body.length;
result[field] = normalizeValue(body.slice(start, end));
}
return result;
}
function assertValidInput(input) {
for (const field of requiredFields) {
if (!input[field]) {
throw new Error(`Issue form is missing required field: ${field}`);
}
}
if (!/^[a-z0-9]+(?:-[a-z0-9]+)*$/.test(input.topic)) {
throw new Error("topic must use lowercase letters, numbers, and single hyphens only.");
}
}
function topicPathFromSlug(slug) {
return resolve(topicRoot, `${slug}.ts`);
}
function readTopicModule(filePath) {
const source = readFileSync(filePath, "utf8");
const declarationPattern = /export const\s+(\w+)\s*:\s*PhotoTopic\s*=\s*({[\s\S]*?});\s*$/;
const match = source.match(declarationPattern);
if (!match) {
throw new Error(`Could not find PhotoTopic export in ${relative(process.cwd(), filePath)}`);
}
const [, exportName, objectSource] = match;
const topic = Function(`return (${objectSource});`)();
return { exportName, topic };
}
function buildPhoto(input, existing = {}) {
return {
title: input.title || existing.title || "",
caption: input.caption || existing.caption || "",
image: input.image || existing.image || ""
};
}
function quote(value) {
return JSON.stringify(value);
}
function formatPhoto(photo) {
return ` {
title: ${quote(photo.title)},
caption: ${quote(photo.caption)},
image: ${quote(photo.image)}
}`;
}
function formatTopicModule(exportName, topic) {
return `import type { PhotoTopic } from "../photo-types";
export const ${exportName}: PhotoTopic = {
slug: ${quote(topic.slug)},
title: ${quote(topic.title)},
text: ${quote(topic.text)},
cover: ${quote(topic.cover ?? "")},
photos: [
${topic.photos.map(formatPhoto).join(",\n")}
]
};
`;
}
const input = parseIssueForm(issueBody);
assertValidInput(input);
const topicPath = topicPathFromSlug(input.topic);
const { exportName, topic } = readTopicModule(topicPath);
if (topic.slug !== input.topic) {
throw new Error(`Topic slug mismatch: issue asked for ${input.topic}, file contains ${topic.slug}`);
}
if (input.cover) {
topic.cover = input.cover;
}
const existingIndex = topic.photos.findIndex((photo) => photo.title === input.title);
if (existingIndex >= 0) {
topic.photos[existingIndex] = buildPhoto(input, topic.photos[existingIndex]);
console.log(`Updated existing photo "${input.title}" in topic: ${input.topic}`);
} else {
topic.photos.push(buildPhoto(input));
console.log(`Added new photo "${input.title}" to topic: ${input.topic}`);
}
writeFileSync(topicPath, formatTopicModule(exportName, topic), "utf8");
console.log(`Wrote ${relative(process.cwd(), topicPath)}`);