#!/usr/bin/env node

import {findItemEDBID} from '../lib/api/lodestone.js';
import {getMediawikiClient} from '../lib/config.js';
import {diff} from '../lib/util/diff.js';

/**
 * Matches an empty `id-edb` infobox parameter which can just have a value
 * inserted after it.
 */
const existingEmptyEDBIDParameter = /^( *\| *id-edb *=) *$/m;

/**
 * Matches an `id-gt` infobox parameter above which we can insert an `id-edb`
 * parameter. Whitespace in capture groups so the inserted parameter can use the
 * exact same formatting.
 */
const existingGTIDParameter = /^( *)\|( *)id-gt( *)=( *).*$/m;

/**
 * Matches a `release` infobox parameter below which we can insert an `id-edb`
 * parameter. Whitespace in capture groups so the inserted parameter can use the
 * exact same formatting.
 */
const existingReleaseParameter = /^( *)\|( *)release( *)=( *).*$/m;

/**
 * Inserts the `id-edb` item infobox parameter into the given page contents.
 * @param {string} pageContent
 * @param {string} edbID
 * @returns {string}
 */
function insertInfoboxEDBID (pageContent, edbID) {
	if (pageContent.includes(`id-edb = ${edbID}`)) {
		console.log('what????', pageContent);
		throw new Error('Page seems to already contain its own EDB ID??');
	}
	if (pageContent.match(existingEmptyEDBIDParameter)) {
		console.log('Page has existing empty `id-edb` parameter');
		return pageContent.replace(existingEmptyEDBIDParameter, `$1 ${edbID}`);
	}
	if (pageContent.match(existingGTIDParameter)) {
		console.log('Page has `id-gt` parameter, inserting `id-edb` above that');
		return pageContent.replace(existingGTIDParameter, `$1|$2id-edb$3=$4${edbID}\n$&`);
	}
	if (pageContent.match(existingReleaseParameter)) {
		console.log('Page has no ID parameters, inserting `id-edb` below `release`');
		return pageContent.replace(existingReleaseParameter, `$&\n$1|$2id-edb$3=$4${edbID}`)
	}

	console.group('Bad page content:');
	console.log(pageContent);
	console.groupEnd();
	throw new Error('Dunno how to insert the parameter into this page');
}

const mw = await getMediawikiClient();

// Get pages in the "Missing EDB ID" category from the main article namespace
const itemPagesWithoutEDBIDs = await mw.listCategoryPages('Category:Missing EDB ID', [0], +process.env.LIMIT || 500);
console.log('Processing', itemPagesWithoutEDBIDs.length, 'item pages from [[Category:Missing EDB ID]]\n');

for (const {title} of itemPagesWithoutEDBIDs) {
	// this runs serially with an artificial delay between requests to decrease
	// the chance of sqenix sending ninjas to my house
	await new Promise(resolve => setTimeout(resolve, 1000));

	console.log('Page:', title);
	// look up on EDB
	const edbID = await findItemEDBID(title);
	if (!edbID) {
		console.log('No EDB ID found for this item, skipping');
		continue;
	}
	console.log('EDB ID:', edbID, `(https://na.finalfantasyxiv.com/lodestone/playguide/db/item/${encodeURIComponent(edbID)})`);

	// rewrite wiki page to include id-edb infobox parameter
	let updatedText;
	try {
		const originalText = await mw.readPage(title);
		updatedText = insertInfoboxEDBID(originalText, edbID);
		diff(originalText, updatedText);
	} catch (error) {
		console.log(error);
		console.log('not doing anything with this item');
		continue;
	}

	// write the new stuff back to the wiki
	try {
		await mw.editPage(title, updatedText, "Add EDB item ID", true);
	} catch (error) {
		console.error(error);
		console.error('writes should not fail, this seems bad, dying now');
		process.exit(1);
	}
	console.log('Written.');
	console.log();
}

console.log('done!');