viewer: migrate to vue 3, general refactoring and cleanup

Non-exhaustive list of fixes and improvements done at the same time:

- html default background to grey (avoids white flash during init)
- unified links behavior
- added more theme variables
- removed the flex-expand transition (it wasn't working) and replaced it
  with a slide
- fixed LdLoading not centered on the content
- title on removable tags
- fixed an issue with encoded URI from vue-router
- unified Item resource URLs
- removed the iframe for PlainTextViewer (it wasn't working properly)
  and replaced it with a pre
- fixed clear and search buttons tabindex
- fixed the information panel bumping up during the fade animation of
  tag's dropdown
- fixed some focus outlines not appearing correctly
- moved CSS variables to the :root context
- Code cleaning

GitHub: closes #217
GitHub: closes #300
GitHub: closes #297
GitHub: closes #105
GitHub: closes #267
GitHub: closes #275
GitHub: closes #228
GitHub: closes #215
GitHub: closes #112

1 files changed, 53 insertions, 0 deletions

diff --git a/viewer/src/plugins/devServer.js b/viewer/src/plugins/devServer.js
new file mode 100644
index 0000000..2cccbbb
--- /dev/null
+++ b/viewer/src/plugins/devServer.js
@@ -0,0 +1,53 @@
+/* ldgallery - A static generator which turns a collection of tagged
+--             pictures into a searchable web gallery.
+--
+-- Copyright (C) 2019-2022  Guillaume FOUET
+--
+-- This program is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU Affero General Public License as
+-- published by the Free Software Foundation, either version 3 of the
+-- License, or (at your option) any later version.
+--
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-- GNU Affero General Public License for more details.
+--
+-- You should have received a copy of the GNU Affero General Public License
+-- along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+/*
+-- Create a file .env.development.local in the project to customize your DevServer
+-- VUE_APP_DEVSERVER_CONFIG_PATH=<http_url> will use the dev_proxyconfig
+-- VUE_APP_DEVSERVER_CONFIG_PATH=<fs_path> will use the dev_fsconfig
+*/
+
+const devReady = Boolean(process.env.VUE_APP_DEVSERVER_CONFIG_PATH);
+const devIsProxy = devReady && Boolean(process.env.VUE_APP_DEVSERVER_CONFIG_PATH?.match(/^https?:\/\//i));
+const devLocalpath = `^/${process.env.VUE_APP_DATA_URL}`;
+const devProxyconfig = {
+  [devLocalpath]: {
+    target: process.env.VUE_APP_DEVSERVER_CONFIG_PATH,
+    pathRewrite: { [devLocalpath]: '' },
+  },
+};
+
+function devFsConfig(middlewares, devServer) {
+  devServer.app.get(`${devLocalpath}*`, (req, res) => {
+    const fs = require('fs');
+    const url = req.url.slice(process.env.VUE_APP_DATA_URL?.length);
+    const paramIdx = url.indexOf('?');
+    const filepath = paramIdx < 0 ? url : url.substring(0, paramIdx);
+    const fullpath = `${process.env.VUE_APP_DEVSERVER_CONFIG_PATH}${decodeURIComponent(filepath)}`;
+    const file = fs.readFileSync(fullpath);
+    res.end(file);
+  });
+  return middlewares;
+}
+
+module.exports = {
+  port: process.env.VUE_APP_DEVSERVER_PORT,
+  proxy: devReady && devIsProxy ? devProxyconfig : undefined,
+  setupMiddlewares: devReady && !devIsProxy ? devFsConfig : undefined,
+};