From 1420cf104ec9ceb08505c5a25614774ba8048eb9 Mon Sep 17 00:00:00 2001
From: Andras Schmelczer <andras@schmelczer.dev>
Date: Sun, 8 Dec 2024 10:57:13 +0000
Subject: [PATCH] Add server config

---
 backend/sync_server/src/config.rs | 51 +++++++++++++++++++++++++++++++
 backend/sync_server/src/consts.rs |  6 ++++
 2 files changed, 57 insertions(+)
 create mode 100644 backend/sync_server/src/config.rs
 create mode 100644 backend/sync_server/src/consts.rs

diff --git a/backend/sync_server/src/config.rs b/backend/sync_server/src/config.rs
new file mode 100644
index 0000000..fb5b6f8
--- /dev/null
+++ b/backend/sync_server/src/config.rs
@@ -0,0 +1,51 @@
+use std::path::Path;
+
+use anyhow::{Context, Result};
+use database_config::DatabaseConfig;
+use log::debug;
+use serde::{Deserialize, Serialize};
+use server_config::ServerConfig;
+use tokio::fs;
+use user_config::UserConfig;
+
+pub mod database_config;
+pub mod server_config;
+pub mod user_config;
+
+use crate::{
+    consts::{DEFAULT_HOST, DEFAULT_MAX_CONNECTIONS, DEFAULT_PORT, DEFAULT_SQLITE_URL},
+    errors::SyncServerError,
+};
+
+#[derive(Debug, Deserialize, Serialize, Clone)]
+pub struct Config {
+    pub database: DatabaseConfig,
+    pub server: ServerConfig,
+    pub users: UserConfig,
+}
+
+impl Config {
+    pub async fn read(path: &Path) -> Result<Self> {
+        Self::load_from_file(path)
+            .await
+            .with_context(|| format!("Cannot load configuration from disk from ({path:?})"))
+    }
+
+    pub async fn load_from_file(path: &Path) -> Result<Self> {
+        let contents = fs::read_to_string(path)
+            .await
+            .context("Failed to read configuration file")?;
+
+        let config = serde_yaml::from_str(&contents).context("Failed to parse configuration")?;
+
+        Ok(config)
+    }
+
+    pub async fn write(&self, path: &Path) -> Result<()> {
+        let contents = serde_yaml::to_string(&self).context("Failed to serialize configuration")?;
+
+        fs::write(path, contents)
+            .await
+            .context("Failed to write configuration to disk")
+    }
+}
diff --git a/backend/sync_server/src/consts.rs b/backend/sync_server/src/consts.rs
new file mode 100644
index 0000000..a4f4361
--- /dev/null
+++ b/backend/sync_server/src/consts.rs
@@ -0,0 +1,6 @@
+pub const CONFIG_PATH: &str = "config.yaml";
+pub const DEFAULT_SQLITE_URL: &str = "db.sqlite3";
+pub const DEFAULT_HOST: &str = "127.0.0.1";
+pub const DEFAULT_PORT: u16 = 3000;
+pub const DEFAULT_MAX_CONNECTIONS: u32 = 12;
+pub const DEFAULT_MAX_BODY_SIZE_MB: usize = 4096;