add default to create a new config toml file when none found

Cargo.lock

@@ -850,7 +850,7 @@ dependencies = [
 
 [[package]]
 name = "mastodon-image-uploader-bot"
-version = "0.3.0"
+version = "0.3.1"
 dependencies = [
  "async-std",
  "log",

compose.yaml

@@ -0,0 +1,39 @@
+version: "3"
+
+services:
+  mongodb:
+    image: mongo:bionic
+    container_name: mongodb
+    ports:
+      - "27017:27017"
+    environment:
+      MONGO_INITDB_ROOT_USERNAME: root
+      MONGO_INITDB_ROOT_PASSWORD: password
+      MONGO_INITDB_DATABASE: bot
+    volumes:
+      - mongodb_data:/data/db
+
+  bot-api:
+    image: git.fai.st/fedi-image-bot/bot-api:v1.0.0
+    container_name: bot-api
+    ports:
+      - "8080:8080"
+    depends_on:
+      - mongodb
+    environment:
+      MONGODB_URI: "mongodb://mongodb:27017/bot"
+      MONGODB_USER: "root"
+      MONGODB_PASS: "password"
+      JWTSECRET: "cooljwtsecret"
+
+  bot:
+    image: rust
+    container_name: bot
+    working_dir: /app
+    depends_on:
+      - bot-api
+    volumes:
+      - ./:/app:rw
+
+volumes:
+  mongodb_data:

src/main.rs

@@ -7,7 +7,7 @@ use std::io::{Cursor, Write};
 use std::process::exit;
 use std::time::Duration;
 
-#[derive(Debug, Serialize)]
+#[derive(Serialize)]
 struct AccountUpdate {
   note: String,
 }
@@ -16,28 +16,28 @@ const CONFIG_FILENAME: &str = "config.toml";
 
 type DynResult<T> = Result<T, Box<dyn std::error::Error>>;
 
-#[derive(Deserialize)]
+#[derive(Deserialize, Serialize, Default)]
 struct Config {
   bot: Bot,
   files: Files,
   errors: Errors,
 }
 
-#[derive(Deserialize)]
+#[derive(Deserialize, Serialize, Default)]
 struct Bot {
   name: String,
   instance: String,
   bio: String,
 }
 
-#[derive(Deserialize)]
+#[derive(Deserialize, Serialize, Default)]
 struct Files {
   posted: String,
   urls: String,
   tempfile: String,
 }
 
-#[derive(Deserialize)]
+#[derive(Deserialize, Serialize, Default)]
 struct Errors {
   maintainers: String,
   out_of_images: String,
@@ -129,11 +129,26 @@ fn get_config() -> Config {
     Ok(config) => config,
     Err(err) => {
       log::error!("Config file parsing unsuccesful: {}", err);
+			generate_config().unwrap();
+			log::info!("Please check the working directory to find a new config file");
       exit(1);
     }
   }
 }
 
+fn generate_config() -> DynResult<()> {
+	let config = Config::default();
+	let config = toml::to_string(&config)?;
+	std::fs::write(CONFIG_FILENAME, &config)?;
+	Ok(())
+}
+
+/// Parses the given filename to a config struct
+fn parse_config(filename: &str) -> DynResult<Config> {
+  let toml_file = std::fs::read_to_string(filename)?; //.expect("No config file, consider getting the original one and modifing it");
+  Ok(toml::from_str(&toml_file)?) //("Malformed config file, check the original one for reference")
+}
+
 async fn get_account(config: &Config) -> Mastodon {
   if let Ok(data) = masto_toml::from_file("mastodon-data.toml") {
     Mastodon::from(data)
@@ -148,11 +163,6 @@ async fn get_account(config: &Config) -> Mastodon {
   }
 }
 
-/// Parses the given filename to a config struct
-fn parse_config(filename: &str) -> DynResult<Config> {
-  let toml_file = std::fs::read_to_string(filename)?; //.expect("No config file, consider getting the original one and modifing it");
-  Ok(toml::from_str(&toml_file)?) //("Malformed config file, check the original one for reference")
-}
 
 fn get_next_url(config: &Config) -> DynResult<Option<String>> {
   let binding = std::fs::read_to_string(&config.files.posted)?; //.expect("Posted file not found");