doc update

README.md

@@ -1,6 +1,8 @@
 # breeze
 breeze is a simple, performant file upload server.
 
+The primary instance is https://picture.wtf.
+
 ## Features
 Compared to the old Express.js backend, breeze has
 - Streamed uploading
@@ -18,7 +20,7 @@ Either way, you need to start off by cloning the Git repository.
 git clone https://git.min.rip/min/breeze.git
 ```
 
-To run it in Docker, I recommend using Docker Compose. An example `docker-compose.yaml` configuration is below.
+To run it in Docker, I recommend using Docker Compose. An example `docker-compose.yaml` configuration is below. You can start it using `docker compose up -d`.
 ```
 version: '3.6'
 
@@ -29,20 +31,15 @@ services:
 
     volumes:
       - /srv/uploads:/data
+      - ./breeze.toml:/etc/breeze.toml
 
     ports:
       - 8000:8000
-
-    environment:
-      - BRZ_BASE_URL=http://127.0.0.1:8000
-      - BRZ_SAVE_PATH=/data
-      - BRZ_UPLOAD_KEY=hiiiiiiii
-      - BRZ_CACHE_UPL_MAX_LENGTH=134217728 # allow files up to ~134 MiB to be cached
-      - BRZ_CACHE_UPL_LIFETIME=1800 # let uploads stay in cache for 30 minutes
-      - BRZ_CACHE_SCAN_FREQ=60 # scan the cache for expired files if more than 60 seconds have passed since the last scan
-      - BRZ_CACHE_MEM_CAPACITY=4294967296 # allow 4 GiB of data to be in the cache at once
 ```
-For this configuration, it is expected that there is a clone of the Git repository in the `./breeze` folder. You can start it using `docker compose up -d`.
+For this configuration, it is expected that:
+* there is a clone of the Git repository in the `./breeze` folder.
+* there is a `breeze.toml` config file in current directory
+* there is a directory at `/srv/uploads` for storing uploads
 
 It can also be installed directly if you have the Rust toolchain installed:
 ```bash
@@ -51,15 +48,59 @@ cargo install --path .
 
 ## Usage
 ### Hosting
-Configuration is read through environment variables, because I wanted to run this using Docker Compose.
-```
-BRZ_BASE_URL - base url for upload urls (ex: http://127.0.0.1:8000 for http://127.0.0.1:8000/p/abcdef.png, http://picture.wtf for http://picture.wtf/p/abcdef.png)
-BRZ_SAVE_PATH - this should be a path where uploads are saved to disk (ex: /srv/uploads, C:\brzuploads)
-BRZ_UPLOAD_KEY (optional) - if not empty, the key you specify will be required to upload new files.
-BRZ_CACHE_UPL_MAX_LENGTH - this is the max length an upload can be in bytes before it won't be cached (ex: 80000000 for 80MB)
-BRZ_CACHE_UPL_LIFETIME - this indicates how long an upload will stay in cache (ex: 1800 for 30 minutes, 60 for 1 minute)
-BRZ_CACHE_SCAN_FREQ - this is the frequency of full cache scans, which scan for and remove expired uploads (ex: 60 for 1 minute)
-BRZ_CACHE_MEM_CAPACITY - this is the amount of memory the cache will hold before dropping entries
+Configuration is read through a toml file.
+
+By default it'll try to read `./breeze.toml`, but you can specify a different path using the `-c`/`--config` command line switch.
+
+Here is an example config file:
+```toml
+[engine]
+# The base URL that the HTTP server will be accessible on.
+# This is used for formatting upload URLs.
+# Setting it to "https://picture.wtf" would result in
+#  upload urls of "https://picture.wtf/p/abcdef.png", etc.
+base_url = "http://127.0.0.1:8000"
+
+# The location that uploads will be saved to.
+# It should be a path to a directory on disk that you can write to.
+save_path = "/data"
+
+# OPTIONAL - If set, the static key specified will be required to upload new files.
+# If it is not set, no key will be required.
+upload_key = "hiiiiiiii"
+
+# OPTIONAL - specifies what to show when the site is visited on http
+# It is sent with text/plain content type.
+# There are two variables you can use:
+#  %uplcount% - total number of uploads present on the server
+#  %version%  - current breeze version (e.g. 0.1.5)
+motd = "my image host, currently hosting %uplcount% files"
+
+[engine.cache]
+# The file size (in bytes) that a file must be under
+# to get cached.
+max_length = 134_217_728
+
+# How long a cached upload will remain cached. (in seconds)
+upload_lifetime = 1800
+
+# How often the cache will be checked for expired uploads.
+# It is not a continuous scan, and only is triggered upon a cache operation.
+scan_freq = 60
+
+# How much memory (in bytes) the cache is allowed to consume.
+mem_capacity = 4_294_967_295
+
+[http]
+# The address that the HTTP server will listen on. (ip:port)
+# Use 0.0.0.0 as the IP to listen publicly, 127.0.0.1 only lets your
+# computer access it
+listen_on = "127.0.0.1:8000"
+
+[logger]
+# OPTIONAL - the current log level.
+# Default level is warn.
+level = "warn"
 ```
 
 ### Uploading