feat(web, server): Ability to use config file instead of admin UI (#3836)

* implement method to read config file

* getConfig returns config file if present

* return isConfigFile for http requests

* disable elements if config file is used, show message if config file is set, copy existing config to clipboard

* fix allowing partial configuration files

* add new env variable to docs

* fix tests

* minor refactoring, address review

* adapt config type in frontend

* remove unnecessary imports

* move config file reading to system-config repo

* add documentation

* fix code formatting in system settings page

* add validator for config file

* fix formatting in docs

* update generated files

* throw error when trying to update config. e.g. via cli or api

* switch to feature flags for isConfigFile

* refactoring

* refactor: config file

* chore: open api

* feat: always show copy/export buttons

* fix: default flags

* refactor: copy to clipboard

---------

Co-authored-by: Jason Rasmussen <jrasm91@gmail.com>

docs/docs/install/config-file.md

@@ -0,0 +1,91 @@
+# Config File
+
+A config file can be provided as an alternative to the UI configuration.
+
+### Step 1 - Create a new config file
+
+In JSON format, create a new config file (e.g. `immich.config`) and put it in a location that can be accessed by Immich.
+The default configuration looks like this:
+
+```json
+{
+  "ffmpeg": {
+    "crf": 23,
+    "threads": 0,
+    "preset": "ultrafast",
+    "targetVideoCodec": "h264",
+    "targetAudioCodec": "aac",
+    "targetResolution": "720",
+    "maxBitrate": "0",
+    "twoPass": false,
+    "transcode": "required",
+    "tonemap": "hable",
+    "accel": "disabled"
+  },
+  "job": {
+    "backgroundTask": {
+      "concurrency": 5
+    },
+    "clipEncoding": {
+      "concurrency": 2
+    },
+    "metadataExtraction": {
+      "concurrency": 5
+    },
+    "objectTagging": {
+      "concurrency": 2
+    },
+    "recognizeFaces": {
+      "concurrency": 2
+    },
+    "search": {
+      "concurrency": 5
+    },
+    "sidecar": {
+      "concurrency": 5
+    },
+    "storageTemplateMigration": {
+      "concurrency": 5
+    },
+    "thumbnailGeneration": {
+      "concurrency": 5
+    },
+    "videoConversion": {
+      "concurrency": 1
+    }
+  },
+  "oauth": {
+    "enabled": false,
+    "issuerUrl": "",
+    "clientId": "",
+    "clientSecret": "",
+    "mobileOverrideEnabled": false,
+    "mobileRedirectUri": "",
+    "scope": "openid email profile",
+    "storageLabelClaim": "preferred_username",
+    "buttonText": "Login with OAuth",
+    "autoRegister": true,
+    "autoLaunch": false
+  },
+  "passwordLogin": {
+    "enabled": true
+  },
+  "storageTemplate": {
+    "template": "{{y}}/{{y}}-{{MM}}-{{dd}}/{{filename}}"
+  },
+  "thumbnail": {
+    "webpSize": 250,
+    "jpegSize": 1440
+  }
+}
+```
+
+:::tip
+In Administration > Settings is a button to copy the current configuration to your clipboard.
+So you can just grab it from there, paste it into a file and you're pretty much good to go.
+:::
+
+### Step 2 - Specify the file location
+
+In your `.env` file, set the variable `IMMICH_CONFIG_FILE` to the path of your config.
+For more information, refer to the [Environment Variables](https://docs.immich.app/docs/install/environment-variables) section.

docs/docs/install/environment-variables.md

@@ -1,3 +1,7 @@
+---
+sidebar_position: 90
+---
+
 # Environment Variables
 
 ## Docker Compose
@@ -22,6 +26,7 @@ These environment variables are used by the `docker-compose.yml` file and do **N
 | `LOG_LEVEL`                 | Log Level (verbose, debug, log, warn, error) |    `log`     | server, microservices                        |
 | `IMMICH_MEDIA_LOCATION`     | Media Location                               |  `./upload`  | server, microservices                        |
 | `PUBLIC_LOGIN_PAGE_MESSAGE` | Public Login Page Message                    |              | web                                          |
+| `IMMICH_CONFIG_FILE`        | Path to config file                          |              | server                                       |
 
 :::tip
 

docs/docs/install/post-install.mdx

@@ -1,5 +1,5 @@
 ---
-sidebar_position: 100
+sidebar_position: 80
 ---
 
 import RegisterAdminUser from '../partials/_register-admin.md';