refactor: remove loco-rs

apps/recorder/src/app/config/mod.rs

@@ -0,0 +1,78 @@
+use std::{fs, path::Path, str};
+
+use figment::{
+    Figment, Provider,
+    providers::{Format, Json, Toml, Yaml},
+};
+use itertools::Itertools;
+use serde::{Deserialize, Serialize};
+
+use super::env::Enviornment;
+use crate::{
+    auth::AuthConfig, errors::RResult, extract::mikan::AppMikanConfig,
+    graphql::config::GraphQLConfig, storage::StorageConfig,
+};
+
+const DEFAULT_CONFIG_MIXIN: &str = include_str!("./default_mixin.toml");
+const CONFIG_ALLOWED_EXTENSIONS: &[&str] = &[".toml", ".json", ".yaml", ".yml"];
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub struct AppConfig {
+    pub auth: AuthConfig,
+    pub dal: StorageConfig,
+    pub mikan: AppMikanConfig,
+    pub graphql: GraphQLConfig,
+}
+
+impl AppConfig {
+    pub fn config_prefix() -> String {
+        format!("{}.config", env!("CARGO_PKG_NAME"))
+    }
+
+    pub fn dotenv_prefix() -> String {
+        String::from(".env")
+    }
+
+    pub fn allowed_extension() -> Vec<String> {
+        CONFIG_ALLOWED_EXTENSIONS
+            .iter()
+            .map(|s| s.to_string())
+            .collect_vec()
+    }
+
+    pub fn priority_suffix(enviornment: &Enviornment) -> Vec<String> {
+        vec![
+            format!(".{}.local", enviornment.full_name()),
+            format!(".{}.local", enviornment.short_name()),
+            String::from(".local"),
+            enviornment.full_name().to_string(),
+            enviornment.short_name().to_string(),
+            String::from(""),
+        ]
+    }
+
+    pub fn default_provider() -> impl Provider {
+        Toml::string(DEFAULT_CONFIG_MIXIN)
+    }
+
+    pub fn merge_provider_from_file(
+        fig: Figment,
+        filepath: impl AsRef<Path>,
+        ext: &str,
+    ) -> RResult<Figment> {
+        let content = fs::read_to_string(filepath)?;
+
+        let rendered = tera::Tera::one_off(
+            &content,
+            &tera::Context::from_value(serde_json::json!({}))?,
+            false,
+        )?;
+
+        Ok(match ext {
+            ".toml" => fig.merge(Toml::string(&rendered)),
+            ".json" => fig.merge(Json::string(&rendered)),
+            ".yaml" | ".yml" => fig.merge(Yaml::string(&rendered)),
+            _ => unreachable!("unsupported config extension"),
+        })
+    }
+}