Reworked webserver to eliminate redundant code
This commit is contained in:
Carlo Morgenstern
parent
73b396c05e
commit
3ebbb867b2
1 changed files with 103 additions and 113 deletions
216
index.js
216
index.js
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@ -6,146 +6,136 @@ const fsStore = require('cache-manager-fs-binary');
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const { CardCreator } = require('./create-card');
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const port = process.env.PORT || 5000;
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const xivApiKey = typeof process.env.XIV_API_KEY === 'string' && process.env.XIV_API_KEY !== '' ? process.env.XIV_API_KEY : undefined;
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const supportedLanguages = ['en', 'ja', 'de', 'fr'];
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const app = express();
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const creator = new CardCreator();
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// Initialize caching on disk
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const diskCache = cacheManager.caching({
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store: fsStore,
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options: {
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reviveBuffers: true,
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binaryAsStream: false,
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ttl: 60 * 60 * 4 /* seconds */,
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maxsize: 1000 * 1000 * 1000 /* max size in bytes on disk */,
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path: 'diskcache',
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preventfill: true
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}
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store: fsStore,
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options: {
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reviveBuffers: true,
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binaryAsStream: false,
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ttl: 14400, // s = 4h
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maxsize: 1000000000, // bytes = 1 GB
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path: 'diskcache',
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preventfill: true,
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}
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});
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async function getCharIdByName(world, name, retries = 1) {
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if (retries === -1) return undefined;
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async function getCharacterIdByName(world, name, retries = 1) {
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if (retries === -1) return undefined;
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const response = await fetch(`https://xivapi.com/character/search?name=${name}&server=${world}`);
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const data = await response.json();
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const searchUrl = new URL('https://xivapi.com/character/search');
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searchUrl.searchParams.set('name', name)
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searchUrl.searchParams.set('server', world)
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if (xivApiKey != null) searchUrl.searchParams.set('private_key', xivApiKey)
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if (data.Results[0] === undefined)
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return getCharIdByName(world, name, --retries);
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const response = await fetch(searchUrl.toString());
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const data = await response.json();
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return data.Results[0].ID;
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if (data.Results[0] === undefined) return getCharacterIdByName(world, name, --retries);
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return data.Results[0].ID;
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}
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app.get('/prepare/id/:charaId', async (req, res) => {
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var cacheKey = `img:${req.params.charaId}`;
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var ttl = 60 * 60 * 4; // 4 hours
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async function cacheCreateCard(characterId, customImage, language) {
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const cacheKey = `img:${characterId}:${customImage}:${language}`;
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diskCache.wrap(cacheKey,
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// called if the cache misses in order to generate the value to cache
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function (cb) {
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creator.ensureInit().then(() => creator.createCard(req.params.charaId), (reason) => cb('Init failed: ' + reason, null)).then(image => cb(null, {
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binary: {
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image: image,
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}
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})).catch((reason) => cb('createCard failed: ' + reason, null));
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},
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// Options, see node-cache-manager for more examples
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{ ttl: ttl },
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function (err, result) {
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if (err !== null) {
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console.error(err);
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res.status(500).send({status: "error", reason: err});
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return;
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}
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return diskCache.wrap(cacheKey, async () => {
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await creator.ensureInit().catch(error => { throw new Error(`Init failed with: ${error}`) });
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const image = await creator.createCard(characterId, customImage, language).catch(error => { throw new Error(`Create card failed with: ${error}`) });
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res.status(200).send({status: "ok", url: `/characters/id/${req.params.charaId}.png`});
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}
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);
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})
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return {
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binary: {
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image,
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},
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};
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});
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}
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app.get('/prepare/name/:world/:charName', async (req, res) => {
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var id = await getCharIdByName(req.params.world, req.params.charName);
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function getOriginalQueryString(req) {
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const url = new URL(req.originalUrl, 'http://example.org');
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return url.search;
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}
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if (id === undefined) {
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res.status(404).send({status: "error", reason: "Character not found."});
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return;
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}
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app.get('/prepare/id/:characterId', (req, res, next) => {
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const language = typeof req.query.lang === 'string' && supportedLanguages.includes(req.query.lang) ? req.query.lang : supportedLanguages[0];
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res.redirect(`/prepare/id/${id}`);
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})
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cacheCreateCard(req.params.characterId, null, language)
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.then(() => {
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res.status(200).json({
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status: 'ok',
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url: `/characters/id/${req.params.characterId}.png`,
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});
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})
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.catch(next);
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});
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app.get('/characters/id/:charaId.png', async (req, res) => {
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var cacheKey = `img:${req.params.charaId}`;
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var ttl = 60 * 60 * 4; // 4 hours
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app.get('/prepare/name/:world/:characterName', (req, res, next) => {
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getCharacterIdByName(req.params.world, req.params.characterName)
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.then(characterId => {
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if (characterId == null) {
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res.status(404).send({ status: 'error', reason: 'Character not found.' });
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} else {
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res.redirect(`/prepare/id/${characterId}${getOriginalQueryString(req)}`);
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}
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})
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.catch(next);
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});
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diskCache.wrap(cacheKey,
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// called if the cache misses in order to generate the value to cache
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function (cb) {
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creator.ensureInit().then(() => creator.createCard(req.params.charaId), (reason) => cb('Init failed: ' + reason, null)).then(image => cb(null, {
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binary: {
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image: image,
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}
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})).catch((reason) => cb('createCard failed: ' + reason, null));
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},
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// Options, see node-cache-manager for more examples
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{ ttl: ttl },
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function (err, result) {
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if (err !== null) {
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console.error(err);
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res.status(500).send({status: "error", reason: err});
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return;
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}
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app.get('/characters/id/:characterId.png', (req, res, next) => {
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const language = typeof req.query.lang === 'string' && supportedLanguages.includes(req.query.lang) ? req.query.lang : supportedLanguages[0];
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var image = result.binary.image;
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cacheCreateCard(req.params.characterId, null, language)
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.then(result => {
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const image = result.binary.image;
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res.writeHead(200, {
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'Content-Type': 'image/png',
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'Content-Length': image.length,
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'Cache-Control': 'public, max-age=14400'
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});
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res.writeHead(200, {
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'Cache-Control': 'public, max-age=14400',
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'Content-Length': Buffer.byteLength(image),
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'Content-Type': 'image/png',
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});
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res.end(image, 'binary');
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res.end(image, 'binary');
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})
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.catch(next);
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});
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var usedStreams = ['image'];
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// you have to do the work to close the unused files
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// to prevent file descriptors leak
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for (var key in result.binary) {
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if (!result.binary.hasOwnProperty(key)) continue;
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if (usedStreams.indexOf(key) < 0
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&& result.binary[key] instanceof Stream.Readable) {
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if (typeof result.binary[key].close === 'function') {
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result.binary[key].close(); // close the stream (fs has it)
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} else {
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result.binary[key].resume(); // resume to the end and close
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}
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}
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}
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}
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);
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})
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app.get('/characters/id/:characterId', (req, res) => {
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res.redirect(`/characters/id/${req.params.characterId}.png${getOriginalQueryString(req)}`);
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});
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app.get('/characters/id/:charaId', async (req, res) => {
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res.redirect(`/characters/id/${req.params.charaId}.png`);
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})
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app.get('/characters/name/:world/:characterName.png', (req, res, next) => {
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getCharacterIdByName(req.params.world, req.params.characterName)
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.then(characterId => {
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if (characterId == null) {
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res.status(404).send({ status: 'error', reason: 'Character not found.' });
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} else {
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res.redirect(`/characters/id/${characterId}${getOriginalQueryString(req)}`);
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}
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})
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.catch(next);
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});
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app.get('/characters/name/:world/:charName.png', async (req, res) => {
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var id = await getCharIdByName(req.params.world, req.params.charName);
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if (id === undefined) {
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res.status(404).send({status: "error", reason: "Character not found."});
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return;
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}
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res.redirect(`/characters/id/${id}.png`);
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})
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app.get('/characters/name/:world/:charName', async (req, res) => {
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res.redirect(`/characters/name/${req.params.world}/${req.params.charName}.png`);
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})
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app.get('/characters/name/:world/:characterName', (req, res) => {
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res.redirect(`/characters/name/${req.params.world}/${req.params.characterName}.png${getOriginalQueryString(req)}`);
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});
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app.get('/', async (req, res) => {
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res.redirect('https://github.com/ArcaneDisgea/XIV-Character-Cards');
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})
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res.redirect('https://github.com/xivapi/XIV-Character-Cards');
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});
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app.use((error, req, res, next) => {
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console.error(error);
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res.status(500).json({
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status: 'error',
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reason: error instanceof Error ? error.stack : String(error),
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});
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});
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app.listen(port, () => {
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console.log(`Listening at http://localhost:${port}`)
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})
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console.log(`Listening at http://localhost:${port}`);
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});
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