photochamber-webserver/router/api.js

const mime = require("mime-types");
const fs = require('fs');
const Path = require('path');
const Security = require('../src/security.js');
const MediaService = require('../model/mediaService.js');

module.exports = { register: app => {
    app.router.get("/api/access/list", (req, res) => {
        app.routerUtils.onApiRequest(req, res);
        app.routerUtils.jsonResponse(res, req.accessList);
    });
    app.router.post("/api/access/link", async (req, res) => { // /api/access/link, post: { linkId: string }
        app.routerUtils.onApiRequest(req, res);
        if (!req.post?.linkId?.length)
            return app.routerUtils.httpResponse(res, 400, "Missing argument");
        let access = Security.addLinkToSession(req, req.post.linkId);
        app.routerUtils.jsonResponse(res, access);
    });
    app.router.del("/api/access/:id", (req, res) => {
        app.routerUtils.onApiRequest(req, res);
        Security.removeFromSession(req, req.params.id);
        let access = Security.getAccessList(req.cookies);
        app.routerUtils.jsonResponse(res, access);
    });
    app.router.get("/api/media/list", async (req, res) => {
        app.routerUtils.onApiRequest(req, res);
        let first = undefined,
            last = undefined;
        if (req.body?.chronology !== undefined) {
            let range = await MediaService.getMediaRange(app);
            first = range[0];
            last = range[1];
        }
        let fromDate = parseInt(req.body?.from);
        let count = parseInt(req.body?.count);
        app.routerUtils.jsonResponse(res, {
            data: await MediaService.fetchMediasWithAccess(
                app,
                isNaN(fromDate) ? 0 : fromDate,
                isNaN(count) ? 25 : Math.min(75, count),
                req.accessList),
            first: first,
            last: last
        });
    });
    app.router.get("/api/media/:md5sum", async (req, res) => {
        app.routerUtils.onApiRequest(req, res);
        let data = await MediaService.fetchOne(app, req.params.md5sum, req.accessList);
        if (!data)
            return app.routerUtils.onPageNotFound(res);
        app.routerUtils.jsonResponse(res, data);
    });
    app.router.get("/api/media/thumbnail/:md5sum.jpg", async (req, res) => {
        app.routerUtils.onApiRequest(req, res);
        let data = await MediaService.fetchOne(app, req.params.md5sum, req.accessList);
        if (!data)
            return app.routerUtils.onPageNotFound(res);
        try {
            let thumbnail = await (await app.libraryManager.findMedia(data.path))?.createThumbnail(req.body?.w || 0, req.body?.h || 0, req.body?.q || 6);
            if (!thumbnail)
                return app.routerUtils.onPageNotFound(res);
            res.setHeader("Content-Type", "image/jpeg");
            res.setHeader("Content-Length", fs.statSync(thumbnail.name)?.size || undefined);
            res.setHeader("Cache-Control", "private, max-age=2630000"); // 1 month cache
            let rd = fs.createReadStream(thumbnail.name);
            rd.once('end', () => thumbnail.removeCallback());
            rd.pipe(res);
        }
        catch (err) {
            console.error(err);
            app.routerUtils.onPageNotFound(res);
        }
    });
    app.router.get("/api/media/original/:md5sum", async (req, res) => {
        app.routerUtils.onApiRequest(req, res);
        let data = await MediaService.fetchOne(app, req.params.md5sum, req.accessList);
        if (!data)
            return app.routerUtils.onPageNotFound(res);
        const fileName = Path.basename(data.path);
        res.setHeader("Content-Type", mime.lookup(data.path));
        res.setHeader("Content-Length", fs.statSync(data.path)?.size || undefined);
        res.setHeader("Content-Disposition", `attachment; filename="${fileName}"`);
        res.setHeader("Cache-Control", "private, max-age=2630000"); // 1 month cache
        fs.createReadStream(data.path).pipe(res);
    });
}};