feat: initial server config & Dockerfile

pacman-server/src/config.rs

@@ -0,0 +1,67 @@
+use figment::{providers::Env, value::UncasedStr, Figment};
+use serde::{Deserialize, Deserializer};
+
+#[derive(Debug, Deserialize)]
+pub struct Config {
+    // Database URL
+    pub database_url: String,
+    // Discord Credentials
+    #[serde(deserialize_with = "deserialize_string_from_any")]
+    pub discord_client_id: String,
+    pub discord_client_secret: String,
+    // GitHub Credentials
+    #[serde(deserialize_with = "deserialize_string_from_any")]
+    pub github_client_id: String,
+    pub github_client_secret: String,
+    // S3 Credentials
+    pub s3_access_key: String,
+    pub s3_secret_access_key: String,
+    pub s3_endpoint: String,
+    pub s3_region: String,
+    // Server Details
+    #[serde(default = "default_port")]
+    pub port: u16,
+    #[serde(default = "default_host")]
+    pub host: std::net::IpAddr,
+    #[serde(default = "default_shutdown_timeout")]
+    pub shutdown_timeout_seconds: u32,
+}
+
+fn default_host() -> std::net::IpAddr {
+    "0.0.0.0".parse().unwrap()
+}
+
+fn default_port() -> u16 {
+    3000
+}
+
+fn default_shutdown_timeout() -> u32 {
+    5
+}
+
+fn deserialize_string_from_any<'de, D>(deserializer: D) -> Result<String, D::Error>
+where
+    D: Deserializer<'de>,
+{
+    use serde_json::Value;
+
+    let value = Value::deserialize(deserializer)?;
+    match value {
+        Value::String(s) => Ok(s),
+        Value::Number(n) => Ok(n.to_string()),
+        _ => Err(serde::de::Error::custom("Expected string or number")),
+    }
+}
+
+pub fn load_config() -> Config {
+    Figment::new()
+        .merge(Env::raw().map(|key| {
+            if key == UncasedStr::new("RAILWAY_DEPLOYMENT_DRAINING_SECONDS") {
+                "SHUTDOWN_TIMEOUT".into()
+            } else {
+                key.into()
+            }
+        }))
+        .extract()
+        .expect("Failed to load config")
+}